configure.in

   1 AC_INIT(README)
   2 AC_CANONICAL_SYSTEM
   3
   4 # Gross hack to enable 'make dist' on automake 1.9+tar 1.14.
   5 # The extra brackets are to foil regex-based scans.
   6 m4_ifdef([_A][M_PROG_TAR],[_A][M_SET_OPTION([tar-ustar])])
   7
   8 AM_CONFIG_HEADER(config.h)
   9 AM_INIT_AUTOMAKE(mono,2.5)
  10 AM_MAINTAINER_MODE
  11
  12 API_VER=1.0
  13 AC_SUBST(API_VER)
  14
  15 AC_PROG_LN_S
  16
  17 # In case of cygwin, override LN_S, irrespective of what it determines.
  18 # The build uses cygwin, but the actual runtime doesn't.
  19 case $host_os in
  20 *cygwin* ) LN_S='cp -p';;
  21 esac
  22
  23
  24 dnl
  25 dnl libgc checks
  26 dnl
  27
  28 gc_headers=no
  29 gc=included
  30 use_included_gc=no
  31 libgc_configure_args=
  32
  33 if test -d $srcdir/libgc ; then
  34   gc_default=included
  35 else
  36   gc_default=boehm
  37 fi
  38
  39 # These variables are the CPPFLAGS/CFLAGS passed to libgc's configure
  40 # libgc should inherit the original CFLAGS/CPPFLAGS passed to configure, i.e. -O0
  41 CPPFLAGS_FOR_LIBGC=$CPPFLAGS
  42 CFLAGS_FOR_LIBGC=$CFLAGS
  43
  44 #
  45 # These are the flags that need to be stored in the mono.pc file for
  46 # compiling code that will embed Mono
  47 #
  48 libmono_cflags=""
  49 libmono_ldflags=""
  50 AC_SUBST(libmono_cflags)
  51 AC_SUBST(libmono_ldflags)
  52
  53 # Variable to have relocatable .pc files (lib, or lib64)
  54 reloc_libdir=`basename ${libdir}`
  55 AC_SUBST(reloc_libdir)
  56
  57 dnl if linker handles the version script
  58 no_version_script=no
  59
  60 # Set to yes if Unix sockets cannot be created in an anonymous namespace
  61 need_link_unlink=no
  62
  63 # Thread configuration inspired by sleepycat's db
  64 AC_MSG_CHECKING([host platform characteristics])
  65 libgc_threads=no
  66 has_dtrace=no
  67 parallel_mark=yes
  68 case "$host" in
  69         *-*-mingw*|*-*-cygwin*)
  70                 platform_win32=yes
  71                 AC_DEFINE(PLATFORM_WIN32,1,[Platform is Win32])
  72                 AC_DEFINE(DISABLE_PORTABILITY,1,[Disable the io-portability layer])
  73                 AC_DEFINE(PLATFORM_NO_SYMLINKS,1,[This platform does not support symlinks])
  74                 if test "x$cross_compiling" = "xno"; then
  75                         CC="gcc -mno-cygwin -g"
  76                         # So libgc configure gets -mno-cygwin
  77                         export CC
  78                 fi
  79                 HOST_CC="gcc"
  80                 # Windows 2000 is required that includes Internet Explorer 5.01
  81                 CPPFLAGS="$CPPFLAGS -DWINVER=0x0500 -D_WIN32_WINNT=0x0500 -D_WIN32_IE=0x0501 -D_UNICODE -DUNICODE -DWIN32_THREADS -DFD_SETSIZE=1024"
  82                 libmono_cflags="-mno-cygwin -mms-bitfields -mwindows"
  83                 libmono_ldflags="-mno-cygwin -mms-bitfields -mwindows"
  84                 libdl=
  85                 libgc_threads=win32
  86                 gc_default=included
  87                 with_sigaltstack=no
  88                 LN_S=cp
  89                 # This forces libgc to use the DllMain based thread registration code on win32
  90                 libgc_configure_args="$libgc_configure_args --enable-win32-dllmain=yes"
  91                 ;;
  92         *-*-*netbsd*)
  93                 platform_win32=no
  94                 CPPFLAGS="$CPPFLAGS -D_REENTRANT -DGC_NETBSD_THREADS -D_GNU_SOURCE"
  95                 libmono_cflags="-D_REENTRANT"
  96                 LDFLAGS="$LDFLAGS -pthread"
  97                 CPPFLAGS="$CPPFLAGS -DPLATFORM_BSD"
  98                 libmono_ldflags="-pthread"
  99                 need_link_unlink=yes
 100                 libdl="-ldl"
 101                 libgc_threads=pthreads
 102                 with_sigaltstack=no
 103                 use_sigposix=yes
 104                 ;;
 105         *-*-*freebsd*)
 106                 platform_win32=no
 107                 if test "x$PTHREAD_CFLAGS" = "x"; then
 108                         CPPFLAGS="$CPPFLAGS -DGC_FREEBSD_THREADS"
 109                         libmono_cflags=
 110                 else
 111                         CPPFLAGS="$CPPFLAGS $PTHREAD_CFLAGS -DGC_FREEBSD_THREADS"
 112                         libmono_cflags="$PTHREAD_CFLAGS"
 113                 fi
 114                 if test "x$PTHREAD_LIBS" = "x"; then
 115                         LDFLAGS="$LDFLAGS -pthread"
 116                         libmono_ldflags="-pthread"
 117                 else
 118                         LDFLAGS="$LDFLAGS $PTHREAD_LIBS"
 119                         libmono_ldflags="$PTHREAD_LIBS"
 120                 fi
 121                 CPPFLAGS="$CPPFLAGS -DPLATFORM_BSD"
 122                 need_link_unlink=yes
 123                 AC_DEFINE(PTHREAD_POINTER_ID, 1, [pthread is a pointer])
 124                 libdl=
 125                 libgc_threads=pthreads
 126                 # This doesn't seem to work as of 7.0 on amd64
 127                 with_sigaltstack=no
 128 # TLS is only partially implemented on -CURRENT (compiler support
 129 # but NOT library support)
 130 #
 131                 with_tls=pthread
 132                 use_sigposix=yes
 133                 ;;
 134         *-*-*openbsd*)
 135                 platform_win32=no
 136                 CPPFLAGS="$CPPFLAGS -D_THREAD_SAFE -DGC_FREEBSD_THREADS -DPLATFORM_BSD"
 137                 libmono_cflags="-D_THREAD_SAFE"
 138                 LDFLAGS="$LDFLAGS -pthread"
 139                 libmono_ldflags="-pthread"
 140                 need_link_unlink=yes
 141                 AC_DEFINE(PTHREAD_POINTER_ID)
 142                 libdl=
 143                 libgc_threads=pthreads
 144                 use_sigposix=yes
 145                 ;;
 146         *-*-linux*)
 147                 platform_win32=no
 148                 CPPFLAGS="$CPPFLAGS -DGC_LINUX_THREADS -D_GNU_SOURCE -D_REENTRANT -DUSE_MMAP -DUSE_MUNMAP"
 149                 libmono_cflags="-D_REENTRANT"
 150                 libmono_ldflags="-lpthread"
 151                 libdl="-ldl"
 152                 libgc_threads=pthreads
 153                 AOT_SUPPORTED="yes"
 154                 use_sigposix=yes
 155                 ;;
 156         *-*-hpux*)
 157                 platform_win32=no
 158                 CPPFLAGS="$CPPFLAGS -DGC_HPUX_THREADS -D_HPUX_SOURCE -D_XOPEN_SOURCE_EXTENDED -D_REENTRANT"
 159                 # +ESdbgasm only valid on bundled cc on RISC
 160                 # silently ignored for ia64
 161                 if test $GCC != "yes"; then
 162                         CFLAGS="$CFLAGS +ESdbgasm"
 163                         # Arrange for run-time dereferencing of null
 164                         # pointers to produce a SIGSEGV signal.
 165                         LDFLAGS="$LDFLAGS -z"
 166                 fi
 167                 CFLAGS="$CFLAGS +ESdbgasm"
 168                 LDFLAGS="$LDFLAGS -z"
 169                 libmono_cflags="-D_REENTRANT"
 170                 libmono_ldflags="-lpthread"
 171                 libgc_threads=pthreads
 172                 need_link_unlink=yes
 173                 use_sigposix=yes
 174                 ;;
 175         *-*-solaris*)
 176                 platform_win32=no
 177                 CPPFLAGS="$CPPFLAGS -DGC_SOLARIS_THREADS -DGC_SOLARIS_PTHREADS -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS -DUSE_MMAP -DUSE_MUNMAP -DPLATFORM_SOLARIS"
 178                 need_link_unlink=yes
 179                 libmono_cflags="-D_REENTRANT"
 180                 libgc_threads=pthreads
 181                 # This doesn't seem to work on solaris/x86, but the configure test runs
 182                 with_tls=pthread
 183                 has_dtrace=yes
 184                 use_sigposix=yes
 185                 ;;
 186         *-*-darwin*)
 187                 parallel_mark="Disabled_Currently_Hangs_On_MacOSX"
 188                 platform_win32=no
 189                 platform_darwin=yes
 190                 CPPFLAGS="$CPPFLAGS -no-cpp-precomp -D_THREAD_SAFE -DGC_MACOSX_THREADS -DPLATFORM_MACOSX -DUSE_MMAP -DUSE_MUNMAP"
 191                 CPPFLAGS="$CPPFLAGS -DGetCurrentProcess=MonoGetCurrentProcess -DGetCurrentThread=MonoGetCurrentThread -DCreateEvent=MonoCreateEvent"
 192                 libmono_cflags="-D_THREAD_SAFE"
 193                 LDFLAGS="$LDFLAGS -pthread"
 194                 libmono_ldflags="-pthread"
 195                 need_link_unlink=yes
 196                 AC_DEFINE(PTHREAD_POINTER_ID)
 197                 AC_DEFINE(USE_MACH_SEMA, 1, [...])
 198                 no_version_script=yes
 199                 libdl=
 200                 libgc_threads=pthreads
 201                 has_dtrace=yes
 202                 if test "x$cross_compiling" = "xyes"; then
 203                         has_broken_apple_cpp=yes
 204                 fi
 205                 ;;
 206         *)
 207                 AC_MSG_WARN([*** Please add $host to configure.in checks!])
 208                 platform_win32=no
 209                 libdl="-ldl"
 210                 ;;
 211 esac
 212 AC_MSG_RESULT(ok)
 213
 214 if test x$need_link_unlink = xyes; then
 215    AC_DEFINE(NEED_LINK_UNLINK, 1, [Define if Unix sockets cannot be created in an anonymous namespace])
 216 fi
 217
 218 AM_CONDITIONAL(PLATFORM_WIN32, test x$platform_win32 = xyes)
 219 AM_CONDITIONAL(PLATFORM_LINUX, echo x$target_os | grep -q linux)
 220 AM_CONDITIONAL(PLATFORM_DARWIN, test x$platform_darwin = xyes)
 221 AM_CONDITIONAL(PLATFORM_SIGPOSIX, test x$use_sigposix = xyes)
 222
 223 AC_CHECK_TOOL(CC, gcc, gcc)
 224 AC_PROG_CC
 225 # Disabled for now to fix the windows build
 226 #AC_PROG_CXX
 227 AM_PROG_AS
 228 AM_PROG_CC_STDC
 229 AC_PROG_INSTALL
 230 AC_PROG_AWK
 231 dnl We should use AM_PROG_AS, but it's not available on automake/aclocal 1.4
 232 : ${CCAS='$(CC)'}
 233 # Set ASFLAGS if not already set.
 234 : ${CCASFLAGS='$(CFLAGS)'}
 235 AC_SUBST(CCAS)
 236 AC_SUBST(CCASFLAGS)
 237
 238 AC_CHECK_PROG(BISON, bison,yes,no)
 239 if test "x$BISON" = "xno";
 240 then
 241         AC_MSG_ERROR([You need to install bison])
 242 fi
 243
 244 dnl may require a specific autoconf version
 245 dnl AC_PROG_CC_FOR_BUILD
 246 dnl CC_FOR_BUILD not automatically detected
 247 CC_FOR_BUILD=$CC
 248 CFLAGS_FOR_BUILD=$CFLAGS
 249 BUILD_EXEEXT=
 250 if test "x$cross_compiling" = "xyes"; then
 251         CC_FOR_BUILD=cc
 252         CFLAGS_FOR_BUILD=
 253         BUILD_EXEEXT=""
 254 fi
 255 AC_SUBST(CC_FOR_BUILD)
 256 AC_SUBST(CFLAGS_FOR_BUILD)
 257 AC_SUBST(HOST_CC)
 258 AC_SUBST(BUILD_EXEEXT)
 259
 260 AM_CONDITIONAL(CROSS_COMPILING, [test x$cross_compiling = xyes])
 261 AM_CONDITIONAL(USE_BATCH_FILES, [test x$platform_win32 = xyes -a x$cross_compiling = xyes])
 262
 263 # Set STDC_HEADERS
 264 AC_HEADER_STDC
 265 AC_LIBTOOL_WIN32_DLL
 266 # This causes monodis to not link correctly
 267 #AC_DISABLE_FAST_INSTALL
 268 AM_PROG_LIBTOOL
 269 # Use dolt (http://dolt.freedesktop.org/) instead of libtool for building.
 270 DOLT
 271
 272 export_ldflags=`(./libtool --config; echo eval echo \\$export_dynamic_flag_spec) | sh`
 273 AC_SUBST(export_ldflags)
 274
 275 # Test whenever ld supports -version-script
 276 AC_PROG_LD
 277 AC_PROG_LD_GNU
 278 if test "x$lt_cv_prog_gnu_ld" = "xno"; then
 279    no_version_script=yes
 280 fi
 281
 282 AM_CONDITIONAL(NO_VERSION_SCRIPT, test x$no_version_script = xyes)
 283
 284 AC_CHECK_HEADERS(sys/filio.h sys/sockio.h netdb.h utime.h sys/utime.h semaphore.h sys/un.h linux/rtc.h sys/syscall.h sys/mkdev.h)
 285 AC_CHECK_HEADERS(sys/user.h sys/socket.h sys/ipc.h sys/sem.h sys/utsname.h alloca.h ucontext.h pwd.h)
 286
 287 AC_CHECK_HEADER(zlib.h, [have_zlib=yes], [have_zlib=no])
 288 if test x$have_zlib = xyes; then
 289    AC_TRY_COMPILE([#include <zlib.h>], [
 290    void main () {
 291    #if defined(ZLIB_VERNUM) && (ZLIB_VERNUM >= 0x1230)
 292    }
 293    #else
 294    #error No good zlib found
 295    #endif
 296    ],[
 297         AC_MSG_RESULT(Using system zlib)
 298         zlib_msg="system zlib"
 299    ],[
 300         AC_MSG_RESULT(Using embedded zlib)
 301         have_zlib=no
 302         zlib_msg="bundled zlib"
 303    ])
 304 fi
 305
 306 AM_CONDITIONAL(HAVE_ZLIB, test x$have_zlib = xyes)
 307 AC_DEFINE(HAVE_ZLIB,1,[Have system zlib])
 308
 309 # for mono/metadata/debug-symfile.c
 310 AC_CHECK_HEADERS(elf.h)
 311
 312 # for support
 313 AC_CHECK_HEADERS(poll.h)
 314 AC_CHECK_HEADERS(sys/poll.h)
 315 AC_CHECK_HEADERS(sys/wait.h)
 316 AC_CHECK_HEADERS(grp.h)
 317 AC_CHECK_HEADERS(syslog.h)
 318
 319 # for mono/dis
 320 AC_CHECK_HEADERS(wchar.h)
 321 AC_CHECK_HEADERS(ieeefp.h)
 322 AC_MSG_CHECKING(for isinf)
 323 AC_TRY_LINK([#include <math.h>], [
 324         int f = isinf (1);
 325 ], [
 326         AC_MSG_RESULT(yes)
 327         AC_DEFINE(HAVE_ISINF, 1, [isinf available])
 328 ], [
 329         # We'll have to use signals
 330         AC_MSG_RESULT(no)
 331 ])
 332
 333
 334 # not 64 bit clean in cross-compile
 335 AC_CHECK_SIZEOF(void *, 4)
 336
 337 WARN=''
 338 if test x"$GCC" = xyes; then
 339         WARN='-Wall -Wunused -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes  -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wno-cast-qual -Wwrite-strings'
 340                 # The runtime code does not respect ANSI C strict aliasing rules
 341                 CFLAGS="$CFLAGS -fno-strict-aliasing"
 342
 343                 ORIG_CFLAGS=$CFLAGS
 344                 CFLAGS="$CFLAGS -Wdeclaration-after-statement"
 345                 AC_MSG_CHECKING(for -Wdeclaration-after-statement option to gcc)
 346                 AC_TRY_COMPILE([], [
 347                                                    void main () { }
 348                 ], [
 349                    AC_MSG_RESULT(yes)
 350                 ], [
 351                    AC_MSG_RESULT(no)
 352                    CFLAGS=$ORIG_CFLAGS
 353                 ])
 354 else
 355         # The Sun Forte compiler complains about inline functions that access static variables
 356         # so disable all inlining.
 357         case "$host" in
 358         *-*-solaris*)
 359                 CFLAGS="$CFLAGS -Dinline="
 360                 ;;
 361         esac
 362 fi
 363 CFLAGS="$CFLAGS -g $WARN"
 364 CFLAGS_FOR_LIBGC="$CFLAGS_FOR_LIBGC -g"
 365
 366 # Where's the 'mcs' source tree?
 367 if test -d $srcdir/mcs; then
 368   mcsdir=mcs
 369 else
 370   mcsdir=../mcs
 371 fi
 372
 373 #
 374 # A sanity check to catch cases where the package was unpacked
 375 # with an ancient tar program (Solaris)
 376 #
 377 AC_ARG_ENABLE(solaris-tar-check,
 378 [  --disable-solaris-tar-check    disable solaris tar check],
 379    do_solaris_tar_check=no, do_solaris_tar_check=yes)
 380
 381 if test x"$do_solaris_tar_check" = xyes; then
 382         AC_MSG_CHECKING(integrity of package)
 383         if test -f $srcdir/$mcsdir/class/System.Runtime.Serialization.Formatters.Soap/System.Runtime.Serialization.Formatters.Soap/SoapTypeMapper.cs
 384         then
 385                 AC_MSG_RESULT(ok)
 386         else
 387                 errorm="Your mono distribution is incomplete;  if unpacking from a tar file, make sure you use GNU tar;  see http://www.mono-project.com/IncompletePackage for more details"
 388                 AC_MSG_ERROR([$errorm])
 389         fi
 390 fi
 391
 392 mcs_topdir='$(top_srcdir)/'$mcsdir
 393 mcs_topdir_from_srcdir='$(top_builddir)/'$mcsdir
 394
 395 ## Maybe should also disable if mcsdir is invalid.  Let's punt the issue for now.
 396 AM_CONDITIONAL(BUILD_MCS, [test x$cross_compiling = xno && test x$enable_mcs_build != xno])
 397
 398 AC_SUBST([mcs_topdir])
 399 AC_SUBST([mcs_topdir_from_srcdir])
 400
 401 # Where's the 'olive' source tree?
 402 if test -d $srcdir/olive; then
 403   olivedir=olive
 404 else
 405   olivedir=../olive
 406 fi
 407
 408 if test -d $srcdir/$olivedir; then
 409 olive_topdir='$(top_srcdir)/'$olivedir
 410 fi
 411
 412 # gettext: prepare the translation directories.
 413 # we do not configure the full gettext, as we consume it dynamically from C#
 414 AM_PO_SUBDIRS
 415
 416 if test "x$USE_NLS" = "xyes"; then
 417    AC_CHECK_PROG(HAVE_MSGFMT, msgfmt,yes,no)
 418
 419    if test "x$HAVE_MSGFMT" = "xno"; then
 420           AC_MSG_ERROR([msgfmt not found. You need to install the 'gettext' package, or pass --enable-nls=no to configure.])
 421    fi
 422 fi
 423
 424 AC_ARG_WITH([libgdiplus],
 425         [  --with-libgdiplus=installed|sibling|<path>   Override the libgdiplus used for System.Drawing tests (defaults to installed)],
 426         [], [with_libgdiplus=installed])
 427
 428 case $with_libgdiplus in
 429 no|installed) libgdiplus_loc= ;;
 430 yes|sibling) libgdiplus_loc=`cd ../libgdiplus && pwd`/src/libgdiplus.la ;;
 431 /*) libgdiplus_loc=$with_libgdiplus ;;
 432 *) libgdiplus_loc=`pwd`/$with_libgdiplus ;;
 433 esac
 434 AC_SUBST([libgdiplus_loc])
 435
 436 AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
 437 if test "x$PKG_CONFIG" = "xno"; then
 438         AC_MSG_ERROR([You need to install pkg-config])
 439 fi
 440
 441 pkg_config_path=
 442 AC_ARG_WITH(crosspkgdir, [  --with-crosspkgdir=/path/to/pkg-config/dir      Change pkg-config dir to custom dir],
 443         if test x$with_crosspkgdir = "x"; then
 444                 if test -s $PKG_CONFIG_PATH; then
 445                         pkg_config_path=$PKG_CONFIG_PATH
 446                 fi
 447         else
 448                 pkg_config_path=$with_crosspkgdir
 449                 PKG_CONFIG_PATH=$pkg_config_path
 450                 export PKG_CONFIG_PATH
 451         fi
 452 )
 453
 454 AC_ARG_WITH([glib],
 455         [  --with-glib=embedded|system    Choose glib API: system or embedded (default to system)],
 456         [], [with_glib=system])
 457
 458 eglib_dir=
 459
 460 case $with_glib in
 461 embedded)
 462   GLIB_CFLAGS='-I$(top_srcdir)/eglib/src -I$(top_builddir)/eglib/src'
 463   GLIB_LIBS='-L$(top_builddir)/eglib/src -leglib -lm'
 464   BUILD_GLIB_CFLAGS="$GLIB_CFLAGS"
 465   BUILD_GLIB_LIBS="$GLIB_LIBS"
 466   GMODULE_CFLAGS="$GLIB_CFLAGS"
 467   GMODULE_LIBS="$GLIB_LIBS"
 468   eglib_dir=eglib
 469   AC_CONFIG_SUBDIRS(eglib)
 470   ;;
 471 system)
 472   if test "x$cross_compiling" = "xyes"; then
 473     pkg_config_path="$PKG_CONFIG_PATH"
 474     unset PKG_CONFIG_PATH
 475   fi
 476   BUILD_GLIB_CFLAGS=`$PKG_CONFIG --cflags glib-2.0 gthread-2.0`
 477   BUILD_GLIB_LIBS=`$PKG_CONFIG --libs glib-2.0 gthread-2.0`
 478   if test "x$cross_compiling" = "xyes"; then
 479     PKG_CONFIG_PATH=$pkg_config_path
 480     export PKG_CONFIG_PATH
 481   fi
 482
 483   ## Versions of dependencies
 484   GLIB_REQUIRED_VERSION=2.4.0
 485
 486   dnl
 487   dnl No, you will not replace this check with a pkg.m4 check
 488   dnl
 489   if $PKG_CONFIG --atleast-version=$GLIB_REQUIRED_VERSION glib-2.0; then
 490       GLIB_CFLAGS=`$PKG_CONFIG --cflags glib-2.0 gthread-2.0`
 491       GLIB_LIBS=`$PKG_CONFIG --libs glib-2.0 gthread-2.0`
 492       GMODULE_CFLAGS=`$PKG_CONFIG --cflags gmodule-2.0`
 493       GMODULE_LIBS=`$PKG_CONFIG --libs gmodule-2.0`
 494   else
 495         AC_MSG_ERROR([You need at least glib-2.0 $GLIB_REQUIRED_VERSION])
 496   fi
 497   ;;
 498 *)
 499   AC_MSG_ERROR([Invalid argument to --with-glib.])
 500 esac
 501 AM_CONDITIONAL(EGLIB_BUILD, test x$with_glib = xembedded)
 502
 503 AC_SUBST(GLIB_CFLAGS)
 504 AC_SUBST(GLIB_LIBS)
 505 AC_SUBST(GMODULE_CFLAGS)
 506 AC_SUBST(GMODULE_LIBS)
 507 AC_SUBST(BUILD_GLIB_CFLAGS)
 508 AC_SUBST(BUILD_GLIB_LIBS)
 509 AC_SUBST(eglib_dir)
 510
 511 if test x$cross_compiling$platform_win32 = xnoyes; then
 512    AC_MSG_CHECKING(for cygwin glib2-dev package)
 513    if [ cygcheck --f /usr/lib/libglib-2.0.dll.a | grep -q glib2-devel ]; then
 514       AC_MSG_RESULT(found)
 515           AC_MSG_ERROR([Mono cannot be built with the cygwin glib2-devel package installed, because that package doesn't work with -mno-cygwin. Please uninstall it then re-run configure.])
 516    else
 517       AC_MSG_RESULT(not found, ok)
 518    fi
 519
 520    AC_MSG_CHECKING(for broken gwin32.h)
 521    glib_include=`$PKG_CONFIG --cflags-only-I glib-2.0 | sed -e 's/ -I.*//g' | sed -e 's/-I//g'`
 522    if test -f $glib_include/glib/gwin32.h; then
 523           if [ grep ftruncate $glib_include/glib/gwin32.h | grep -q define ]; then
 524                  AC_MSG_RESULT(failed)
 525                  hashmark='#'
 526                  AC_MSG_ERROR([Your version of gwin32.h is broken and will cause compilation errors when building mono. Please fix it by deleting the line: '$hashmark   define ftruncate...' from '$glib_include/glib/gwin32.h' then re-run configure.])
 527           fi
 528    fi
 529    AC_MSG_RESULT(ok)
 530 fi
 531
 532 AC_ARG_WITH(gc, [  --with-gc=boehm,included,none  Defaults to included],[gc=$with_gc],[gc=$gc_default])
 533
 534 # Enable support for fast thread-local storage
 535 # Some systems have broken support, so we allow to disable it.
 536 AC_ARG_WITH(tls, [  --with-tls=__thread,pthread    select Thread Local Storage implementation (defaults to __thread)],[],[with_tls=__thread])
 537
 538 # Enable support for using sigaltstack for SIGSEGV and stack overflow handling
 539 # This does not work on some platforms (bug #55253)
 540 AC_ARG_WITH(sigaltstack, [  --with-sigaltstack=yes,no      enable/disable support for sigaltstack (defaults to yes)],[],[with_sigaltstack=yes])
 541
 542 AC_ARG_WITH(static_mono, [  --with-static_mono=yes,no      link mono statically to libmono (faster) (defaults to yes)],[],[with_static_mono=yes])
 543
 544 if test "x$enable_static" = "xno"; then
 545    with_static_mono=no
 546 fi
 547
 548 if test "x$platform_win32" = "xyes"; then
 549    # Boehm GC requires the runtime to be in its own dll
 550    with_static_mono=no
 551 fi
 552
 553 AM_CONDITIONAL(STATIC_MONO, test x$with_static_mono != xno)
 554 AC_ARG_ENABLE(mcs-build, [  --disable-mcs-build disable the build of the mcs directory], try_mcs_build=$enableval, enable_mcs_build=yes)
 555
 556 AC_ARG_WITH(xen_opt,   [  --with-xen_opt=yes,no          Enable Xen-specific behaviour (defaults to yes)],[],[with_xen_opt=yes])
 557 if test "x$with_xen_opt" = "xyes"; then
 558         AC_DEFINE(MONO_XEN_OPT, 1, [Xen-specific behaviour])
 559         ORIG_CFLAGS=$CFLAGS
 560         CFLAGS="$CFLAGS -mno-tls-direct-seg-refs"
 561         AC_MSG_CHECKING(for -mno-tls-direct-seg-refs option to gcc)
 562         AC_TRY_COMPILE([], [
 563                                            void main () { }
 564         ], [
 565            AC_MSG_RESULT(yes)
 566            # Pass it to libgc as well
 567            CFLAGS_FOR_LIBGC="$CFLAGS_FOR_LIBGC -mno-tls-direct-seg-refs"
 568         ], [
 569            AC_MSG_RESULT(no)
 570            CFLAGS=$ORIG_CFLAGS
 571         ])
 572 fi
 573
 574 AC_ARG_ENABLE(quiet-build, [  --enable-quiet-build  Enable quiet runtime build (on by default)], enable_quiet_build=$enableval, enable_quiet_build=yes)
 575
 576 DISABLED_FEATURES=none
 577
 578 AC_ARG_ENABLE(minimal, [  --enable-minimal=LIST      drop support for LIST subsystems.
 579      LIST is a comma-separated list from: aot, profiler, decimal, pinvoke, debug,
 580      reflection_emit, reflection_emit_save, large_code, logging, com, ssa, generics, attach, jit, simd.],
 581 [
 582         for feature in `echo "$enable_minimal" | sed -e "s/,/ /g"`; do
 583                 eval "mono_feature_disable_$feature='yes'"
 584         done
 585         DISABLED_FEATURES=$enable_minimal
 586         disabled="Disabled:    $enable_minimal"
 587 ],[])
 588
 589 AC_DEFINE_UNQUOTED(DISABLED_FEATURES, "$DISABLED_FEATURES", [String of disabled features])
 590
 591 if test "x$mono_feature_disable_aot" = "xyes"; then
 592         AC_DEFINE(DISABLE_AOT, 1, [Disable AOT support])
 593         AC_MSG_NOTICE([Disabled support for AOT])
 594 fi
 595
 596 if test "x$mono_feature_disable_profiler" = "xyes"; then
 597         AC_DEFINE(DISABLE_PROFILER, 1, [Disable default profiler support])
 598         AC_MSG_NOTICE([Disabled support for the profiler])
 599 fi
 600 AM_CONDITIONAL(DISABLE_PROFILER, test x$mono_feature_disable_profiler = xyes)
 601
 602 if test "x$mono_feature_disable_decimal" = "xyes"; then
 603         AC_DEFINE(DISABLE_DECIMAL, 1, [Disable System.Decimal support])
 604         AC_MSG_NOTICE([Disabled support for decimal])
 605 fi
 606
 607 if test "x$mono_feature_disable_pinvoke" = "xyes"; then
 608         AC_DEFINE(DISABLE_PINVOKE, 1, [Disable P/Invoke support])
 609         AC_MSG_NOTICE([Disabled support for P/Invoke])
 610 fi
 611
 612 if test "x$mono_feature_disable_debug" = "xyes"; then
 613         AC_DEFINE(DISABLE_DEBUG, 1, [Disable runtime debugging support])
 614         AC_MSG_NOTICE([Disabled support for runtime debugging])
 615 fi
 616
 617 if test "x$mono_feature_disable_reflection_emit" = "xyes"; then
 618         AC_DEFINE(DISABLE_REFLECTION_EMIT, 1, [Disable reflection emit support])
 619         mono_feature_disable_reflection_emit_save=yes
 620         AC_MSG_NOTICE([Disabled support for Reflection.Emit])
 621 fi
 622
 623 if test "x$mono_feature_disable_reflection_emit_save" = "xyes"; then
 624         AC_DEFINE(DISABLE_REFLECTION_EMIT_SAVE, 1, [Disable assembly saving support in reflection emit])
 625         AC_MSG_NOTICE([Disabled support for Reflection.Emit.Save])
 626 fi
 627
 628 if test "x$mono_feature_disable_large_code" = "xyes"; then
 629         AC_DEFINE(DISABLE_LARGE_CODE, 1, [Disable support for huge assemblies])
 630         AC_MSG_NOTICE([Disabled support for large assemblies])
 631 fi
 632
 633 if test "x$mono_feature_disable_logging" = "xyes"; then
 634         AC_DEFINE(DISABLE_LOGGING, 1, [Disable support debug logging])
 635         AC_MSG_NOTICE([Disabled support for logging])
 636 fi
 637
 638 if test "x$mono_feature_disable_com" = "xyes"; then
 639         AC_DEFINE(DISABLE_COM, 1, [Disable COM support])
 640         AC_MSG_NOTICE([Disabled COM support])
 641 fi
 642
 643 if test "x$mono_feature_disable_ssa" = "xyes"; then
 644         AC_DEFINE(DISABLE_SSA, 1, [Disable advanced SSA JIT optimizations])
 645         AC_MSG_NOTICE([Disabled SSA JIT optimizations])
 646 fi
 647
 648 if test "x$mono_feature_disable_generics" = "xyes"; then
 649         AC_DEFINE(DISABLE_GENERICS, 1, [Disable generics support])
 650         AC_MSG_NOTICE([Disabled Generics Support])
 651 fi
 652
 653 if test "x$mono_feature_disable_shadowcopy" = "xyes"; then
 654         AC_DEFINE(DISABLE_SHADOW_COPY, 1, [Disable Shadow Copy for AppDomains])
 655         AC_MSG_NOTICE([Disabled Shadow copy for AppDomains])
 656 fi
 657
 658 if test "x$mono_feature_disable_portability" = "xyes"; then
 659         AC_DEFINE(DISABLE_PORTABILITY, 1, [Disables the IO portability layer])
 660         AC_MSG_NOTICE([Disabled IO Portability layer])
 661 fi
 662
 663 if test "x$mono_feature_disable_attach" = "xyes"; then
 664         AC_DEFINE(DISABLE_ATTACH, 1, [Disable agent attach support])
 665         AC_MSG_NOTICE([Disabled agent attach])
 666 fi
 667
 668 if test "x$mono_feature_disable_full_messages" = "xyes"; then
 669         AC_DEFINE(DISABLE_FULL_MESSAGES, 1, [Disables building in the full table of WAPI messages])
 670         AC_MSG_NOTICE([Disabled full messages for Win32 errors, only core message strings shipped])
 671 fi
 672
 673 if test "x$mono_feature_disable_verifier" = "xyes"; then
 674         AC_DEFINE(DISABLE_FULL_MESSAGES, 1, [Disables the verifier])
 675         AC_MSG_NOTICE([Disabled the metadata and IL verifiers])
 676 fi
 677
 678
 679 if test "x$mono_feature_disable_jit" = "xyes"; then
 680         AC_DEFINE(DISABLE_JIT, 1, [Disable the JIT, only full-aot mode will be supported by the runtime.])
 681         AC_MSG_NOTICE([Disabled the JIT engine, only full AOT will be supported])
 682 fi
 683
 684 AM_CONDITIONAL(DISABLE_JIT, test x$mono_feature_disable_jit = xyes)
 685
 686 if test "x$mono_feature_disable_simd" = "xyes"; then
 687         AC_DEFINE(DISABLE_SIMD, 1, [Disable SIMD intrinsics related optimizations.])
 688         AC_MSG_NOTICE([Disabled SIMD support])
 689 fi
 690
 691 AC_MSG_CHECKING(for visibility __attribute__)
 692 AC_TRY_COMPILE([], [
 693    void __attribute__ ((visibility ("hidden"))) doit (void) {}
 694    void main () { doit (); }
 695 ], [
 696    have_visibility_hidden=yes
 697    AC_MSG_RESULT(yes)
 698 ], [
 699    have_visibility_hidden=no
 700    AC_MSG_RESULT(no)
 701 ])
 702
 703 AC_ARG_ENABLE(parallel-mark, [  --enable-parallel-mark     Enables GC Parallel Marking], enable_parallel_mark=$enableval, enable_parallel_mark=$parallel_mark)
 704 if test x$enable_parallel_mark = xyes; then
 705         libgc_configure_args="$libgc_configure_args --enable-parallel-mark"
 706 fi
 707
 708 LIBGC_CFLAGS=
 709 LIBGC_LIBS=
 710 LIBGC_STATIC_LIBS=
 711 libgc_dir=
 712 case "x$gc" in
 713         xboehm|xbohem|xyes)
 714                 AC_CHECK_HEADERS(gc.h gc/gc.h, gc_headers=yes)
 715                 AC_CHECK_LIB(gc, GC_malloc, found_boehm="yes",,$libdl)
 716
 717                 if test "x$found_boehm" != "xyes"; then
 718                         AC_MSG_ERROR("GC requested but libgc not found! Install libgc or run configure with --with-gc=none.")
 719                 fi
 720                 if test "x$gc_headers" != "xyes"; then
 721                         AC_MSG_ERROR("GC requested but header files not found! You may need to install them by hand.")
 722                 fi
 723
 724                 AC_DEFINE(HAVE_BOEHM_GC, 1, [Have Boehm GC])
 725                 AC_SUBST(HAVE_BOEHM_GC)
 726                 LIBGC_LIBS="-lgc $libdl"
 727                 LIBGC_STATIC_LIBS="$LIBGC_LIBS"
 728
 729                 # AC_CHECK_FUNCS does not work for some reason...
 730                 AC_CHECK_LIB(gc, GC_gcj_malloc, found_gcj_malloc="yes",,$libdl)
 731                 if test "x$found_gcj_malloc" = "xyes"; then
 732                         AC_DEFINE(HAVE_GC_GCJ_MALLOC, 1, [Have GC_gcj_malloc])
 733                         AC_DEFINE_UNQUOTED(USED_GC_NAME, "System Boehm (with typed GC)", [GC description])
 734                 else
 735                         AC_DEFINE_UNQUOTED(USED_GC_NAME, "System Boehm (no typed GC)", [GC description])
 736                 fi
 737                 AC_CHECK_LIB(gc, GC_enable, found_gc_enable="yes",,$libdl)
 738                 if test "x$found_gc_enable" = "xyes"; then
 739                         AC_DEFINE(HAVE_GC_ENABLE, 1, [Have 'GC_enable'])
 740                 fi
 741                 ;;
 742
 743         xincluded)
 744                 found_boehm=yes
 745                 gc_headers=yes
 746                 use_included_gc=yes
 747                 libgc_dir=libgc
 748
 749                 LIBGC_CFLAGS='-I$(top_srcdir)/libgc/include'
 750                 LIBGC_LIBS='$(top_builddir)/libgc/libmonogc.la'
 751                 LIBGC_STATIC_LIBS='$(top_builddir)/libgc/libmonogc-static.la'
 752
 753                 AC_DEFINE(HAVE_BOEHM_GC, 1, [Have Boehm GC])
 754                 AC_SUBST(HAVE_BOEHM_GC)
 755
 756                 AC_DEFINE(HAVE_GC_H, 1, [Have gc.h])
 757                 AC_DEFINE(USE_INCLUDED_LIBGC, 1, [Use included libgc])
 758
 759                 # The included libgc contains GCJ support
 760                 AC_DEFINE(HAVE_GC_GCJ_MALLOC, 1, [Have GC_gcj_malloc])
 761                 AC_DEFINE(HAVE_GC_ENABLE, 1, [Have GC_enable])
 762                 if test x$enable_parallel_mark = xyes; then
 763                         AC_DEFINE_UNQUOTED(USED_GC_NAME, "Included Boehm (with typed GC and Parallel Mark)", [GC description])
 764                 else
 765                         AC_DEFINE_UNQUOTED(USED_GC_NAME, "Included Boehm (with typed GC)", [GC description])
 766                 fi
 767                 ;;
 768
 769         xsgen)
 770                 found_boehm=no
 771                 gc_headers=no
 772                 use_included_gc=no
 773                 AC_DEFINE(HAVE_SGEN_GC,1,[Using the simple generational GC.])
 774                 AC_DEFINE(HAVE_MOVING_COLLECTOR,1,[The GC can move objects.])
 775                 AC_DEFINE(HAVE_WRITE_BARRIERS,1,[The GC needs write barriers.])
 776                 AC_DEFINE_UNQUOTED(USED_GC_NAME, "Simple generational", [GC description])
 777                 ;;
 778
 779         xnone)
 780                 AC_MSG_WARN("Compiling mono without GC.")
 781                 AC_DEFINE_UNQUOTED(USED_GC_NAME, "none", [GC description])
 782                 AC_DEFINE(HAVE_NULL_GC,1,[No GC support.])
 783                 ;;
 784         *)
 785                 AC_MSG_ERROR([Invalid argument to --with-gc.])
 786                 ;;
 787 esac
 788
 789 AC_ARG_WITH(large-heap, [  --with-large-heap=yes,no       Enable support for GC heaps larger than 3GB (defaults to no)], [large_heap=$withval], [large_heap=no])
 790 if test "x$large_heap" = "xyes"; then
 791    echo "FOO"
 792    CPPFLAGS="$CPPFLAGS -DLARGE_CONFIG"
 793 fi
 794
 795 AM_CONDITIONAL(INCLUDED_LIBGC, test x$use_included_gc = xyes)
 796 AC_SUBST(LIBGC_CFLAGS)
 797 AC_SUBST(LIBGC_LIBS)
 798 AC_SUBST(LIBGC_STATIC_LIBS)
 799 AC_SUBST(libgc_dir)
 800
 801 dnl
 802 dnl End of libgc checks
 803 dnl
 804
 805 if test x$platform_win32 = xno; then
 806
 807         dnl hires monotonic clock support
 808         AC_SEARCH_LIBS(clock_gettime, rt)
 809
 810         dnl dynamic loader support
 811         AC_CHECK_FUNC(dlopen, DL_LIB="",
 812                 AC_CHECK_LIB(dl, dlopen, DL_LIB="-ldl", dl_support=no)
 813         )
 814         if test x$dl_support = xno; then
 815                 AC_MSG_WARN([No dynamic loading support available])
 816         else
 817                 LIBS="$LIBS $DL_LIB"
 818                 AC_DEFINE(HAVE_DL_LOADER,1,[dlopen-based dynamic loader available])
 819                 dnl from glib's configure.in
 820                 AC_CACHE_CHECK([for preceeding underscore in symbols],
 821                         mono_cv_uscore,[
 822                         AC_TRY_RUN([#include <dlfcn.h>
 823                         int mono_underscore_test (void) { return 42; }
 824                         int main() {
 825                           void *f1 = (void*)0, *f2 = (void*)0, *handle;
 826                           handle = dlopen ((void*)0, 0);
 827                           if (handle) {
 828                             f1 = dlsym (handle, "mono_underscore_test");
 829                             f2 = dlsym (handle, "_mono_underscore_test");
 830                           } return (!f2 || f1);
 831                         }],
 832                                 [mono_cv_uscore=yes],
 833                                 [mono_cv_uscore=no],
 834                         [])
 835                 ])
 836                 if test "x$mono_cv_uscore" = "xyes"; then
 837                         MONO_DL_NEED_USCORE=1
 838                 else
 839                         MONO_DL_NEED_USCORE=0
 840                 fi
 841                 AC_SUBST(MONO_DL_NEED_USCORE)
 842                 AC_CHECK_FUNC(dlerror)
 843         fi
 844
 845         dnl ******************************************************************
 846         dnl *** Checks for the IKVM JNI interface library                  ***
 847         dnl ******************************************************************
 848         AC_ARG_WITH(ikvm-native, [  --with-ikvm-native=yes,no      build the IKVM JNI interface library (defaults to yes)],[with_ikvm_native=$withval],[with_ikvm_native=yes])
 849
 850         ikvm_native_dir=
 851         if test x$with_ikvm_native = xyes; then
 852                 ikvm_native_dir=ikvm-native
 853                 jdk_headers_found="IKVM Native"
 854         fi
 855
 856         AC_SUBST(ikvm_native_dir)
 857
 858         AC_CHECK_HEADERS(execinfo.h)
 859
 860         AC_CHECK_FUNCS(getgrgid_r)
 861         AC_CHECK_FUNCS(getgrnam_r)
 862         AC_CHECK_FUNCS(getpwnam_r)
 863         AC_CHECK_FUNCS(getpwuid_r)
 864         AC_CHECK_FUNCS(getresuid)
 865         AC_CHECK_FUNCS(setresuid)
 866         AC_CHECK_FUNCS(kqueue)
 867         AC_CHECK_FUNCS(backtrace_symbols)
 868         AC_CHECK_FUNCS(mkstemp)
 869         AC_CHECK_FUNCS(mmap)
 870         AC_CHECK_FUNCS(madvise)
 871         AC_CHECK_FUNCS(getrusage)
 872         AC_CHECK_FUNCS(getpriority)
 873         AC_CHECK_FUNCS(setpriority)
 874
 875         AC_CHECK_FUNCS(sched_setaffinity)
 876
 877         dnl ******************************************************************
 878         dnl *** Check for large file support                               ***
 879         dnl *** (If we were using autoconf 2.50 we'd use AC_SYS_LARGEFILE) ***
 880         dnl ******************************************************************
 881
 882         # Check that off_t can represent 2**63 - 1 correctly, working around
 883         # potential compiler bugs.  Defines LARGE_FILE_SUPPORT, adds $1 to
 884         # CPPFLAGS and sets $large_offt to yes if the test succeeds
 885         large_offt=no
 886         AC_DEFUN([LARGE_FILES], [
 887                 large_CPPFLAGS=$CPPFLAGS
 888                 CPPFLAGS="$CPPFLAGS $1"
 889                 AC_TRY_RUN([
 890                         #include <sys/types.h>
 891
 892                         #define BIG_OFF_T (((off_t)1<<62)-1+((off_t)1<<62))
 893
 894                         int main(void) {
 895                                 int big_off_t=((BIG_OFF_T%2147483629==721) &&
 896                                                (BIG_OFF_T%2147483647==1));
 897                                 if(big_off_t) {
 898                                         exit(0);
 899                                 } else {
 900                                         exit(1);
 901                                 }
 902                         }
 903                 ], [
 904                         AC_MSG_RESULT(ok)
 905                         AC_DEFINE(HAVE_LARGE_FILE_SUPPORT, 1, [Have large file support])
 906                         large_CPPFLAGS="$large_CPPFLAGS $1"
 907                         large_offt=yes
 908                 ], [
 909                         AC_MSG_RESULT(no)
 910                 ], "")
 911                 CPPFLAGS=$large_CPPFLAGS
 912         ])
 913
 914         AC_MSG_CHECKING(if off_t is 64 bits wide)
 915         LARGE_FILES("")
 916         if test $large_offt = no; then
 917                 AC_MSG_CHECKING(if _FILE_OFFSET_BITS=64 gives 64 bit off_t)
 918                 LARGE_FILES("-D_FILE_OFFSET_BITS=64")
 919         fi
 920         if test $large_offt = no; then
 921                 AC_MSG_WARN([No 64 bit file size support available])
 922         fi
 923
 924         dnl *****************************
 925         dnl *** Checks for libsocket  ***
 926         dnl *****************************
 927         AC_CHECK_LIB(socket, socket, LIBS="$LIBS -lsocket")
 928
 929         dnl *******************************
 930         dnl *** Checks for MSG_NOSIGNAL ***
 931         dnl *******************************
 932         AC_MSG_CHECKING(for MSG_NOSIGNAL)
 933         AC_TRY_COMPILE([#include <sys/socket.h>], [
 934                 int f = MSG_NOSIGNAL;
 935         ], [
 936                 # Yes, we have it...
 937                 AC_MSG_RESULT(yes)
 938                 AC_DEFINE(HAVE_MSG_NOSIGNAL, 1, [Have MSG_NOSIGNAL])
 939         ], [
 940                 # We'll have to use signals
 941                 AC_MSG_RESULT(no)
 942         ])
 943
 944         dnl *****************************
 945         dnl *** Checks for SOL_IP     ***
 946         dnl *****************************
 947         AC_MSG_CHECKING(for SOL_IP)
 948         AC_TRY_COMPILE([#include <netdb.h>], [
 949                 int level = SOL_IP;
 950         ], [
 951                 # Yes, we have it...
 952                 AC_MSG_RESULT(yes)
 953                 AC_DEFINE(HAVE_SOL_IP, 1, [Have SOL_IP])
 954         ], [
 955                 # We'll have to use getprotobyname
 956                 AC_MSG_RESULT(no)
 957         ])
 958
 959         dnl *****************************
 960         dnl *** Checks for SOL_IPV6     ***
 961         dnl *****************************
 962         AC_MSG_CHECKING(for SOL_IPV6)
 963         AC_TRY_COMPILE([#include <netdb.h>], [
 964                 int level = SOL_IPV6;
 965         ], [
 966                 # Yes, we have it...
 967                 AC_MSG_RESULT(yes)
 968                 AC_DEFINE(HAVE_SOL_IPV6, 1, [Have SOL_IPV6])
 969         ], [
 970                 # We'll have to use getprotobyname
 971                 AC_MSG_RESULT(no)
 972         ])
 973
 974         dnl *****************************
 975         dnl *** Checks for SOL_TCP    ***
 976         dnl *****************************
 977         AC_MSG_CHECKING(for SOL_TCP)
 978         AC_TRY_COMPILE([#include <netdb.h>], [
 979                 int level = SOL_TCP;
 980         ], [
 981                 # Yes, we have it...
 982                 AC_MSG_RESULT(yes)
 983                 AC_DEFINE(HAVE_SOL_TCP, 1, [Have SOL_TCP])
 984         ], [
 985                 # We'll have to use getprotobyname
 986                 AC_MSG_RESULT(no)
 987         ])
 988
 989         dnl *****************************
 990         dnl *** Checks for IP_PKTINFO ***
 991         dnl *****************************
 992         AC_MSG_CHECKING(for IP_PKTINFO)
 993         AC_TRY_COMPILE([#include <netdb.h>], [
 994                 int level = IP_PKTINFO;
 995         ], [
 996                 # Yes, we have it...
 997                 AC_MSG_RESULT(yes)
 998                 AC_DEFINE(HAVE_IP_PKTINFO, 1, [Have IP_PKTINFO])
 999         ], [
1000                 AC_MSG_RESULT(no)
1001         ])
1002
1003         dnl *****************************
1004         dnl *** Checks for IPV6_PKTINFO ***
1005         dnl *****************************
1006         AC_MSG_CHECKING(for IPV6_PKTINFO)
1007         AC_TRY_COMPILE([#include <netdb.h>], [
1008                 int level = IPV6_PKTINFO;
1009         ], [
1010                 # Yes, we have it...
1011                 AC_MSG_RESULT(yes)
1012                 AC_DEFINE(HAVE_IPV6_PKTINFO, 1, [Have IPV6_PKTINFO])
1013         ], [
1014                 AC_MSG_RESULT(no)
1015         ])
1016
1017         dnl **********************************
1018         dnl *** Checks for IP_DONTFRAGMENT ***
1019         dnl **********************************
1020         AC_MSG_CHECKING(for IP_DONTFRAGMENT)
1021         AC_TRY_COMPILE([#include <netdb.h>], [
1022                 int level = IP_DONTFRAGMENT;
1023         ], [
1024                 # Yes, we have it...
1025                 AC_MSG_RESULT(yes)
1026                 AC_DEFINE(HAVE_IP_DONTFRAGMENT, 1, [Have IP_DONTFRAGMENT])
1027         ], [
1028                 AC_MSG_RESULT(no)
1029         ])
1030
1031         dnl **********************************
1032         dnl *** Checks for IP_MTU_DISCOVER ***
1033         dnl **********************************
1034         AC_MSG_CHECKING(for IP_MTU_DISCOVER)
1035         AC_TRY_COMPILE([#include <netdb.h>], [
1036                 int level = IP_MTU_DISCOVER;
1037         ], [
1038                 # Yes, we have it...
1039                 AC_MSG_RESULT(yes)
1040                 AC_DEFINE(HAVE_IP_MTU_DISCOVER, 1, [Have IP_MTU_DISCOVER])
1041         ], [
1042                 AC_MSG_RESULT(no)
1043         ])
1044
1045         dnl *********************************
1046         dnl *** Check for struct ip_mreqn ***
1047         dnl *********************************
1048         AC_MSG_CHECKING(for struct ip_mreqn)
1049         AC_TRY_COMPILE([#include <netinet/in.h>], [
1050                 struct ip_mreqn mreq;
1051                 mreq.imr_address.s_addr = 0;
1052         ], [
1053                 # Yes, we have it...
1054                 AC_MSG_RESULT(yes)
1055                 AC_DEFINE(HAVE_STRUCT_IP_MREQN, 1, [Have struct ip_mreqn])
1056         ], [
1057                 # We'll just have to try and use struct ip_mreq
1058                 AC_MSG_RESULT(no)
1059                 AC_MSG_CHECKING(for struct ip_mreq)
1060                 AC_TRY_COMPILE([#include <netinet/in.h>], [
1061                         struct ip_mreq mreq;
1062                         mreq.imr_interface.s_addr = 0;
1063                 ], [
1064                         # Yes, we have it...
1065                         AC_MSG_RESULT(yes)
1066                         AC_DEFINE(HAVE_STRUCT_IP_MREQ, 1, [Have struct ip_mreq])
1067                 ], [
1068                         # No multicast support
1069                         AC_MSG_RESULT(no)
1070                 ])
1071         ])
1072
1073         dnl **********************************
1074         dnl *** Check for gethostbyname2_r ***
1075         dnl **********************************
1076         AC_MSG_CHECKING(for gethostbyname2_r)
1077                 AC_TRY_LINK([#include <netdb.h>], [
1078                 gethostbyname2_r(NULL,0,NULL,NULL,0,NULL,NULL);
1079         ], [
1080                 # Yes, we have it...
1081                 AC_MSG_RESULT(yes)
1082                 AC_DEFINE(HAVE_GETHOSTBYNAME2_R, 1, [Have gethostbyname2_r])
1083         ], [
1084                 AC_MSG_RESULT(no)
1085         ])
1086
1087         dnl *****************************
1088         dnl *** Checks for libnsl     ***
1089         dnl *****************************
1090         AC_CHECK_FUNC(gethostbyaddr, , AC_CHECK_LIB(nsl, gethostbyaddr, LIBS="$LIBS -lnsl"))
1091
1092         AC_CHECK_FUNCS(inet_pton inet_aton)
1093
1094         dnl ***********************************************
1095         dnl *** Checks for size of sockaddr_un.sun_path ***
1096         dnl ***********************************************
1097         # AC_CHECK_SIZEOF can't cope with struct members :-(
1098         AC_MSG_CHECKING(size of sockaddr_un.sun_path)
1099         AC_CACHE_VAL(mono_cv_sizeof_sunpath,
1100                 [AC_TRY_RUN([
1101                         #include <sys/types.h>
1102                         #include <stdio.h>
1103                         #include <sys/un.h>
1104
1105                         int main(void) {
1106                                 struct sockaddr_un sock_un;
1107                                 FILE *f=fopen("conftestval", "w");
1108                                 if(!f) exit(1);
1109                                 fprintf(f, "%d\n", sizeof(sock_un.sun_path));
1110                                 exit(0);
1111                         }
1112                 ], mono_cv_sizeof_sunpath=`cat conftestval`,
1113                    mono_cv_sizeof_sunpath=0,
1114                    mono_cv_sizeof_sunpath=0)])dnl
1115         AC_MSG_RESULT($mono_cv_sizeof_sunpath)
1116         AC_DEFINE_UNQUOTED(MONO_SIZEOF_SUNPATH, $mono_cv_sizeof_sunpath, [Sizeof sock_un.sun_path])
1117
1118         dnl *************************************
1119         dnl *** Checks for zero length arrays ***
1120         dnl *************************************
1121         AC_MSG_CHECKING(whether $CC supports zero length arrays)
1122         AC_TRY_COMPILE([
1123                 struct s {
1124                         int  length;
1125                         char data [0];
1126                 };
1127         ], [], [
1128                 AC_MSG_RESULT(yes)
1129                 AC_DEFINE_UNQUOTED(MONO_ZERO_ARRAY_LENGTH, 0, [Length of zero length arrays])
1130         ], [
1131                 AC_MSG_RESULT(no)
1132                 AC_DEFINE_UNQUOTED(MONO_ZERO_ARRAY_LENGTH, 1, [Length of zero length arrays])
1133         ])
1134
1135         dnl *****************************
1136         dnl *** Checks for libxnet    ***
1137         dnl *****************************
1138         case "${host}" in
1139                 *solaris* )
1140                         AC_MSG_CHECKING(for Solaris XPG4 support)
1141                         if test -f /usr/lib/libxnet.so; then
1142                                 CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE=500"
1143                                 CPPFLAGS="$CPPFLAGS -D__EXTENSIONS__"
1144                                 CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE_EXTENDED=1"
1145                                 LIBS="$LIBS -lxnet"
1146                                 AC_MSG_RESULT(yes)
1147                         else
1148                                 AC_MSG_RESULT(no)
1149                         fi
1150
1151                         if test "$GCC" = "yes"; then
1152                                 CFLAGS="$CFLAGS -Wno-char-subscripts"
1153                         fi
1154                 ;;
1155         esac
1156
1157         dnl *****************************
1158         dnl *** Checks for libpthread ***
1159         dnl *****************************
1160 # on FreeBSD -STABLE, the pthreads functions all reside in libc_r
1161 # and libpthread does not exist
1162 #
1163         case "${host}" in
1164                 *-*-*freebsd*)
1165                         AC_CHECK_LIB(pthread, main, LIBS="$LIBS -pthread")
1166                 ;;
1167                 *)
1168                         AC_CHECK_LIB(pthread, main, LIBS="$LIBS -lpthread")
1169                 ;;
1170         esac
1171         AC_CHECK_HEADERS(pthread.h)
1172         AC_CHECK_FUNCS(pthread_mutex_timedlock)
1173         AC_CHECK_FUNCS(pthread_getattr_np pthread_attr_get_np)
1174         AC_MSG_CHECKING(for PTHREAD_MUTEX_RECURSIVE)
1175         AC_TRY_COMPILE([ #include <pthread.h>], [
1176                 pthread_mutexattr_t attr;
1177                 pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
1178         ], [
1179                 AC_MSG_RESULT(ok)
1180         ], [
1181                 AC_MSG_RESULT(no)
1182                 AC_MSG_WARN(Using mono_mutex_t for recursive mutexes)
1183                 AC_DEFINE(USE_MONO_MUTEX, 1, [Use mono_mutex_t])
1184         ])
1185         AC_CHECK_FUNCS(pthread_attr_setstacksize)
1186         AC_CHECK_FUNCS(pthread_attr_getstack)
1187         AC_CHECK_FUNCS(pthread_get_stacksize_np pthread_get_stackaddr_np)
1188
1189         dnl ***********************************
1190         dnl *** Checks for working __thread ***
1191         dnl ***********************************
1192         AC_MSG_CHECKING(for working __thread)
1193         if test "x$with_tls" != "x__thread"; then
1194                 AC_MSG_RESULT(disabled)
1195         else
1196                 AC_TRY_RUN([
1197                         #include <pthread.h>
1198                         __thread int i;
1199                         static int res1, res2;
1200
1201                         void thread_main (void *arg)
1202                         {
1203                                 i = arg;
1204                                 sleep (1);
1205                                 if (arg == 1)
1206                                         res1 = (i == arg);
1207                                 else
1208                                         res2 = (i == arg);
1209                         }
1210
1211                         int main () {
1212                                 pthread_t t1, t2;
1213
1214                                 i = 5;
1215
1216                                 pthread_create (&t1, NULL, thread_main, 1);
1217                                 pthread_create (&t2, NULL, thread_main, 2);
1218
1219                                 pthread_join (t1, NULL);
1220                                 pthread_join (t2, NULL);
1221
1222                                 return !(res1 + res2 == 2);
1223                         }
1224                 ], [
1225                                 AC_MSG_RESULT(yes)
1226                 ], [
1227                                 AC_MSG_RESULT(no)
1228                                 with_tls=pthread
1229                 ])
1230         fi
1231
1232         dnl **************************************
1233         dnl *** Checks for working sigaltstack ***
1234         dnl **************************************
1235         AC_MSG_CHECKING(for working sigaltstack)
1236         if test "x$with_sigaltstack" != "xyes"; then
1237                 AC_MSG_RESULT(disabled)
1238         else
1239                 AC_TRY_RUN([
1240                         #include <stdio.h>
1241                         #include <stdlib.h>
1242                         #include <unistd.h>
1243                         #include <signal.h>
1244                         #include <pthread.h>
1245                         #include <sys/wait.h>
1246                         #if defined(__FreeBSD__) || defined(__NetBSD__)
1247                         #define SA_STACK SA_ONSTACK
1248                         #endif
1249                         static void
1250                         sigsegv_signal_handler (int _dummy, siginfo_t *info, void *context)
1251                         {
1252                                 exit (0);
1253                         }
1254
1255                         static void *
1256                         loop (void *ignored)
1257                         {
1258                                 char *ptr = NULL;
1259
1260                                 *ptr = 0;
1261                                 return NULL;
1262                         }
1263
1264                         static void
1265                         child ()
1266                         {
1267                                 struct sigaction sa;
1268                                 struct sigaltstack sas;
1269                                 pthread_t id;
1270                                 pthread_attr_t attr;
1271
1272                                 sa.sa_sigaction = sigsegv_signal_handler;
1273                                 sigemptyset (&sa.sa_mask);
1274                                 sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
1275                                 if (sigaction (SIGSEGV, &sa, NULL) == -1) {
1276                                         perror ("sigaction");
1277                                         return;
1278                                 }
1279
1280                                 sas.ss_sp = malloc (SIGSTKSZ);
1281                                 sas.ss_size = SIGSTKSZ;
1282                                 sas.ss_flags = 0;
1283                                 if (sigaltstack (&sas, NULL) == -1) {
1284                                         perror ("sigaltstack");
1285                                         return;
1286                                 }
1287
1288                                 pthread_attr_init (&attr);
1289                                 if (pthread_create(&id, &attr, loop, &attr) != 0) {
1290                                         printf ("pthread_create\n");
1291                                         return;
1292                                 }
1293
1294                                 sleep (100);
1295                         }
1296
1297                         int
1298                         main ()
1299                         {
1300                                 pid_t son;
1301                                 int status;
1302                                 int i;
1303
1304                                 son = fork ();
1305                                 if (son == -1) {
1306                                         return 1;
1307                                 }
1308
1309                                 if (son == 0) {
1310                                         child ();
1311                                         return 0;
1312                                 }
1313
1314                                 for (i = 0; i < 3; ++i) {
1315                                         sleep (1);
1316                                         waitpid (son, &status, WNOHANG);
1317                                         if (WIFEXITED (status) && WEXITSTATUS (status) == 0)
1318                                                 return 0;
1319                                 }
1320
1321                                 kill (son, SIGKILL);
1322                                 return 1;
1323                         }
1324
1325                 ], [
1326                                 AC_MSG_RESULT(yes)
1327                                 AC_DEFINE(HAVE_WORKING_SIGALTSTACK, 1, [Have a working sigaltstack])
1328                 ], [
1329                                 with_sigaltstack=no
1330                                 AC_MSG_RESULT(no)
1331                 ])
1332         fi
1333
1334         dnl ********************************
1335         dnl *** Checks for semaphore lib ***
1336         dnl ********************************
1337         # 'Real Time' functions on Solaris
1338         # posix4 on Solaris 2.6
1339         # pthread (first!) on Linux
1340         AC_SEARCH_LIBS(sem_init, pthread rt posix4)
1341
1342         AC_SEARCH_LIBS(shm_open, pthread rt posix4)
1343         AC_CHECK_FUNCS(shm_open)
1344
1345         dnl ********************************
1346         dnl *** Checks for timezone stuff **
1347         dnl ********************************
1348         AC_CACHE_CHECK(for tm_gmtoff in struct tm, ac_cv_struct_tm_gmtoff,
1349                 AC_TRY_COMPILE([
1350                         #include <time.h>
1351                         ], [
1352                         struct tm tm;
1353                         tm.tm_gmtoff = 1;
1354                         ], ac_cv_struct_tm_gmtoff=yes, ac_cv_struct_tm_gmtoff=no))
1355         if test $ac_cv_struct_tm_gmtoff = yes; then
1356                 AC_DEFINE(HAVE_TM_GMTOFF, 1, [Have tm_gmtoff])
1357         else
1358                 AC_CACHE_CHECK(for timezone variable, ac_cv_var_timezone,
1359                         AC_TRY_COMPILE([
1360                                 #include <time.h>
1361                         ], [
1362                                 timezone = 1;
1363                         ], ac_cv_var_timezone=yes, ac_cv_var_timezone=no))
1364                 if test $ac_cv_var_timezone = yes; then
1365                         AC_DEFINE(HAVE_TIMEZONE, 1, [Have timezone variable])
1366                 else
1367                         AC_ERROR(unable to find a way to determine timezone)
1368                 fi
1369         fi
1370
1371         dnl *********************************
1372         dnl *** Checks for math functions ***
1373         dnl *********************************
1374         LIBS="$LIBS -lm";
1375         if test "x$has_broken_apple_cpp" != "xyes"; then
1376                 AC_CHECK_FUNCS(finite, , AC_MSG_CHECKING(for finite in math.h)
1377                         AC_TRY_LINK([#include <math.h>],
1378                         [ finite(0.0); ],
1379                         AC_DEFINE(HAVE_FINITE, 1, [Have finite]) AC_MSG_RESULT(yes),
1380                         AC_MSG_RESULT(no)))
1381         fi
1382         AC_CHECK_FUNCS(isfinite, , AC_MSG_CHECKING(for isfinite in math.h)
1383                 AC_TRY_LINK([#include <math.h>],
1384                 [ isfinite(0.0); ],
1385                 AC_DEFINE(HAVE_ISFINITE, 1, [Have isfinite]) AC_MSG_RESULT(yes),
1386                 AC_MSG_RESULT(no)))
1387
1388         dnl ****************************************************************
1389         dnl *** Checks for working poll() (macosx defines it but doesn't ***
1390         dnl *** have it in the library (duh))                            ***
1391         dnl ****************************************************************
1392         AC_CHECK_FUNCS(poll)
1393
1394         dnl *************************
1395         dnl *** Check for signbit ***
1396         dnl *************************
1397         AC_MSG_CHECKING(for signbit)
1398         AC_TRY_LINK([#include <math.h>], [
1399                 int s = signbit(1.0);
1400         ], [
1401                 AC_MSG_RESULT(yes)
1402                 AC_DEFINE(HAVE_SIGNBIT, 1, [Have signbit])
1403         ], [
1404                 AC_MSG_RESULT(no)
1405         ])
1406
1407         dnl **********************************
1408         dnl *** epoll                      ***
1409         dnl **********************************
1410         AC_CHECK_HEADERS(sys/epoll.h)
1411         haveepoll=no
1412         AC_CHECK_FUNCS(epoll_ctl, [haveepoll=yes], )
1413         if test "x$haveepoll" = "xyes" -a "x$ac_cv_header_sys_epoll_h" = "xyes" ; then
1414                 AC_DEFINE(HAVE_EPOLL, 1, [epoll supported])
1415         fi
1416
1417         dnl ******************************
1418         dnl *** Checks for SIOCGIFCONF ***
1419         dnl ******************************
1420         AC_CHECK_HEADERS(sys/ioctl.h)
1421         AC_CHECK_HEADERS(net/if.h)
1422         AC_MSG_CHECKING(for ifreq)
1423         AC_TRY_COMPILE([
1424                 #include <stdio.h>
1425                 #include <sys/ioctl.h>
1426                 #include <net/if.h>
1427                 ], [
1428                 struct ifconf ifc;
1429                 struct ifreq *ifr;
1430                 void *x;
1431                 ifc.ifc_len = 0;
1432                 ifc.ifc_buf = NULL;
1433                 x = (void *) &ifr->ifr_addr;
1434                 ],[
1435                         AC_MSG_RESULT(yes)
1436                         AC_DEFINE(HAVE_SIOCGIFCONF, 1, [Can get interface list])
1437                 ], [
1438                         AC_MSG_RESULT(no)
1439                 ])
1440         dnl **********************************
1441         dnl ***     Checks for sin_len     ***
1442         dnl **********************************
1443         AC_MSG_CHECKING(for sockaddr_in.sin_len)
1444         AC_TRY_COMPILE([
1445                 #include <netinet/in.h>
1446                 ], [
1447                 struct sockaddr_in saddr;
1448                 saddr.sin_len = sizeof (saddr);
1449                 ],[
1450                         AC_MSG_RESULT(yes)
1451                         AC_DEFINE(HAVE_SOCKADDR_IN_SIN_LEN, 1, [sockaddr_in has sin_len])
1452                 ], [
1453                         AC_MSG_RESULT(no)
1454                 ])
1455         dnl **********************************
1456         dnl ***    Checks for sin6_len     ***
1457         dnl **********************************
1458         AC_MSG_CHECKING(for sockaddr_in6.sin6_len)
1459         AC_TRY_COMPILE([
1460                 #include <netinet/in.h>
1461                 ], [
1462                 struct sockaddr_in6 saddr6;
1463                 saddr6.sin6_len = sizeof (saddr6);
1464                 ],[
1465                         AC_MSG_RESULT(yes)
1466                         AC_DEFINE(HAVE_SOCKADDR_IN6_SIN_LEN, 1, [sockaddr_in6 has sin6_len])
1467                 ], [
1468                         AC_MSG_RESULT(no)
1469                 ])
1470         dnl **********************************
1471         dnl *** Checks for MonoPosixHelper ***
1472         dnl **********************************
1473         AC_CHECK_HEADERS(checklist.h)
1474         AC_CHECK_HEADERS(fstab.h)
1475         AC_CHECK_HEADERS(attr/xattr.h)
1476         AC_CHECK_HEADERS(sys/extattr.h)
1477         AC_CHECK_HEADERS(sys/sendfile.h)
1478         AC_CHECK_HEADERS(sys/statvfs.h)
1479         AC_CHECK_HEADERS(sys/statfs.h)
1480         AC_CHECK_HEADERS(sys/vfstab.h)
1481         AC_CHECK_HEADERS(sys/xattr.h)
1482         AC_CHECK_HEADERS(sys/mman.h)
1483         AC_CHECK_HEADERS(sys/param.h)
1484         AC_CHECK_HEADERS(sys/mount.h)
1485         AC_CHECK_FUNCS(getdomainname)
1486         AC_CHECK_FUNCS(setdomainname)
1487         AC_CHECK_FUNCS(fgetgrent)
1488         AC_CHECK_FUNCS(fgetpwent)
1489         AC_CHECK_FUNCS(fgetpwent)
1490         AC_CHECK_FUNCS(getfsstat)
1491         AC_CHECK_FUNCS(lutimes)
1492         AC_CHECK_FUNCS(mremap)
1493         AC_CHECK_FUNCS(remap_file_pages)
1494         AC_CHECK_FUNCS(posix_fadvise)
1495         AC_CHECK_FUNCS(posix_fallocate)
1496         AC_CHECK_FUNCS(posix_madvise)
1497         AC_CHECK_FUNCS(vsnprintf)
1498         AC_CHECK_FUNCS(sendfile)
1499         AC_CHECK_FUNCS(sethostid)
1500         AC_CHECK_FUNCS(statfs)
1501         AC_CHECK_FUNCS(fstatfs)
1502         AC_CHECK_FUNCS(statvfs)
1503         AC_CHECK_FUNCS(fstatvfs)
1504         AC_CHECK_FUNCS(stime)
1505         AC_CHECK_FUNCS(strerror_r)
1506         AC_CHECK_FUNCS(ttyname_r)
1507         AC_CHECK_SIZEOF(size_t)
1508         AC_CHECK_TYPES([blksize_t], [AC_DEFINE(HAVE_BLKSIZE_T)], ,
1509                 [#include <sys/types.h>
1510                  #include <sys/stat.h>
1511                  #include <unistd.h>])
1512         AC_CHECK_TYPES([blkcnt_t], [AC_DEFINE(HAVE_BLKCNT_T)], ,
1513                 [#include <sys/types.h>
1514                  #include <sys/stat.h>
1515                  #include <unistd.h>])
1516         AC_CHECK_TYPES([suseconds_t], [AC_DEFINE(HAVE_SUSECONDS_T)], ,
1517                 [#include <sys/time.h>])
1518         AC_CHECK_TYPES([struct flock], [AC_DEFINE(HAVE_STRUCT_FLOCK)], ,
1519                 [#include <unistd.h>
1520                  #include <fcntl.h>])
1521         AC_CHECK_TYPES([struct pollfd], [AC_DEFINE(HAVE_STRUCT_POLLFD)], ,
1522                 [#include <sys/poll.h>])
1523         AC_CHECK_TYPES([struct stat], [AC_DEFINE(HAVE_STRUCT_STAT)], ,
1524                 [#include <sys/types.h>
1525                  #include <sys/stat.h>
1526                  #include <unistd.h>])
1527         AC_CHECK_TYPES([struct timespec], [AC_DEFINE(HAVE_STRUCT_TIMESPEC)], ,
1528                 [#include <time.h>])
1529         AC_CHECK_TYPES([struct timeval], [AC_DEFINE(HAVE_STRUCT_TIMEVAL)], ,
1530                 [#include <sys/time.h>
1531                  #include <sys/types.h>
1532                  #include <utime.h>])
1533         AC_CHECK_TYPES([struct timezone], [AC_DEFINE(HAVE_STRUCT_TIMEZONE)], ,
1534                 [#include <sys/time.h>])
1535         AC_CHECK_TYPES([struct utimbuf], [AC_DEFINE(HAVE_STRUCT_UTIMBUF)], ,
1536                 [#include <sys/types.h>
1537                  #include <utime.h>])
1538         AC_CHECK_MEMBERS(
1539                 [struct dirent.d_off, struct dirent.d_reclen, struct dirent.d_type],,,
1540                 [#include <sys/types.h>
1541                  #include <dirent.h>])
1542
1543         dnl Favour xattr through glibc, but use libattr if we have to
1544         AC_CHECK_FUNC(lsetxattr, ,
1545                 AC_CHECK_LIB(attr, lsetxattr, XATTR_LIB="-lattr",)
1546         )
1547         AC_SUBST(XATTR_LIB)
1548
1549         dnl kinfo_proc.kp_proc works on darwin but fails on other simil-bsds
1550         AC_CHECK_MEMBERS(
1551                 [struct kinfo_proc.kp_proc],,,
1552                 [#include <sys/types.h>
1553                  #include <sys/sysctl.h>
1554                  #include <sys/proc.h>
1555                  ])
1556
1557         dnl *********************************
1558         dnl *** Checks for Windows compilation ***
1559         dnl *********************************
1560         AC_CHECK_HEADERS(sys/time.h)
1561         AC_CHECK_HEADERS(sys/param.h)
1562         AC_CHECK_HEADERS(dirent.h)
1563
1564         dnl *********************************
1565         dnl *** Check for Console 2.0 I/O ***
1566         dnl *********************************
1567         AC_CHECK_HEADERS([curses.h])
1568         AC_CHECK_HEADERS([term.h], [], [],
1569         [#if HAVE_CURSES_H
1570          #include <curses.h>
1571          #endif
1572         ])
1573         AC_CHECK_HEADERS([termios.h])
1574
1575         dnl * This is provided in io-layer, but on windows it's only available
1576         dnl * on xp+
1577         AC_DEFINE(HAVE_GETPROCESSID, 1, [Define if GetProcessId is available])
1578 else
1579         jdk_headers_found=no
1580         AC_CHECK_LIB(ws2_32, main, LIBS="$LIBS -lws2_32", AC_ERROR(bad mingw install?))
1581         AC_CHECK_LIB(psapi, main, LIBS="$LIBS -lpsapi", AC_ERROR(bad mingw install?))
1582         AC_CHECK_LIB(ole32, main, LIBS="$LIBS -lole32", AC_ERROR(bad mingw install?))
1583         AC_CHECK_LIB(winmm, main, LIBS="$LIBS -lwinmm", AC_ERROR(bad mingw install?))
1584         AC_CHECK_LIB(oleaut32, main, LIBS="$LIBS -loleaut32", AC_ERROR(bad mingw install?))
1585         AC_CHECK_LIB(advapi32, main, LIBS="$LIBS -ladvapi32", AC_ERROR(bad mingw install?))
1586         AC_CHECK_LIB(version, main, LIBS="$LIBS -lversion", AC_ERROR(bad mingw install?))
1587
1588         dnl *********************************
1589         dnl *** Check for struct ip_mreqn ***
1590         dnl *********************************
1591         AC_MSG_CHECKING(for struct ip_mreqn)
1592         AC_TRY_COMPILE([#include <ws2tcpip.h>], [
1593                 struct ip_mreqn mreq;
1594                 mreq.imr_address.s_addr = 0;
1595         ], [
1596                 # Yes, we have it...
1597                 AC_MSG_RESULT(yes)
1598                 AC_DEFINE(HAVE_STRUCT_IP_MREQN)
1599         ], [
1600                 # We'll just have to try and use struct ip_mreq
1601                 AC_MSG_RESULT(no)
1602                 AC_MSG_CHECKING(for struct ip_mreq)
1603                 AC_TRY_COMPILE([#include <ws2tcpip.h>], [
1604                         struct ip_mreq mreq;
1605                         mreq.imr_interface.s_addr = 0;
1606                 ], [
1607                         # Yes, we have it...
1608                         AC_MSG_RESULT(yes)
1609                         AC_DEFINE(HAVE_STRUCT_IP_MREQ)
1610                 ], [
1611                         # No multicast support
1612                         AC_MSG_RESULT(no)
1613                 ])
1614         ])
1615         AC_CHECK_FUNCS(GetProcessId)
1616 fi
1617
1618 dnl socklen_t check
1619 AC_MSG_CHECKING(for socklen_t)
1620 AC_TRY_COMPILE([
1621 #include <sys/types.h>
1622 #include <sys/socket.h>
1623 ],[
1624   socklen_t foo;
1625 ],[
1626 ac_cv_c_socklen_t=yes
1627         AC_DEFINE(HAVE_SOCKLEN_T, 1, [Have socklen_t])
1628         AC_MSG_RESULT(yes)
1629 ],[
1630         AC_MSG_RESULT(no)
1631 ])
1632
1633 AC_MSG_CHECKING(for array element initalizer support)
1634 AC_TRY_COMPILE([#include <sys/socket.h>], [
1635         const int array[] = {[1] = 2,};
1636 ], [
1637         # Yes, we have it...
1638         AC_MSG_RESULT(yes)
1639         AC_DEFINE(HAVE_ARRAY_ELEM_INIT,1,[Supports C99 array initialization])
1640 ], [
1641         # We'll have to use signals
1642         AC_MSG_RESULT(no)
1643 ])
1644
1645 AC_CHECK_FUNCS(trunc, , AC_MSG_CHECKING(for trunc in math.h)
1646         # Simply calling trunc (0.0) is no good since gcc will optimize the call away
1647         AC_TRY_LINK([#include <math.h>],
1648         [ static void *p = &trunc; ],
1649         [
1650                 AC_DEFINE(HAVE_TRUNC)
1651                 AC_MSG_RESULT(yes)
1652                 ac_cv_trunc=yes
1653         ],
1654         AC_MSG_RESULT(no)))
1655
1656 if test "x$ac_cv_truncl" != "xyes"; then
1657    AC_CHECK_LIB(sunmath, aintl, [ AC_DEFINE(HAVE_AINTL, 1, [Has the 'aintl' function]) LIBS="$LIBS -lsunmath"])
1658 fi
1659
1660 AC_CHECK_FUNCS(round)
1661 AC_CHECK_FUNCS(rint)
1662
1663 dnl ****************************
1664 dnl *** Look for /dev/random ***
1665 dnl ****************************
1666
1667 AC_MSG_CHECKING([if usage of random device is requested])
1668 AC_ARG_ENABLE(dev-random,
1669 [  --disable-dev-random    disable the use of the random device (enabled by default)],
1670 try_dev_random=$enableval, try_dev_random=yes)
1671
1672 AC_MSG_RESULT($try_dev_random)
1673
1674 case "{$target}" in
1675     *-openbsd*)
1676     NAME_DEV_RANDOM="/dev/srandom"
1677     ;;
1678
1679 dnl Win32 does not have /dev/random, they have their own method...
1680
1681     *-*-mingw*|*-*-cygwin*)
1682     ac_cv_have_dev_random=no
1683     ;;
1684
1685 dnl Everywhere else, it's /dev/random
1686
1687     *)
1688     NAME_DEV_RANDOM="/dev/random"
1689     ;;
1690 esac
1691
1692 AC_DEFINE_UNQUOTED(NAME_DEV_RANDOM, "$NAME_DEV_RANDOM", [Name of /dev/random])
1693
1694 dnl Now check if the device actually exists
1695
1696 if test "x$try_dev_random" = "xyes"; then
1697     AC_CACHE_CHECK(for random device, ac_cv_have_dev_random,
1698     [if test -r "$NAME_DEV_RANDOM" ; then
1699         ac_cv_have_dev_random=yes; else ac_cv_have_dev_random=no; fi])
1700     if test "x$ac_cv_have_dev_random" = "xyes"; then
1701         AC_DEFINE(HAVE_CRYPT_RNG, 1, [Have /dev/random])
1702     fi
1703 else
1704     AC_MSG_CHECKING(for random device)
1705     ac_cv_have_dev_random=no
1706     AC_MSG_RESULT(has been disabled)
1707 fi
1708
1709 if test "x$platform_win32" = "xyes"; then
1710     AC_DEFINE(HAVE_CRYPT_RNG)
1711 fi
1712
1713 if test "x$ac_cv_have_dev_random" = "xno" \
1714     && test "x$platform_win32" = "xno"; then
1715     AC_MSG_WARN([[
1716 ***
1717 *** A system-provided entropy source was not found on this system.
1718 *** Because of this, the System.Security.Cryptography random number generator
1719 *** will throw a NotImplemented exception.
1720 ***
1721 *** If you are seeing this message, and you know your system DOES have an
1722 *** entropy collection in place, please contact <crichton@gimp.org> and
1723 *** provide information about the system and how to access the random device.
1724 ***
1725 *** Otherwise you can install either egd or prngd and set the environment
1726 *** variable MONO_EGD_SOCKET to point to the daemon's socket to use that.
1727 ***]])
1728 fi
1729
1730 AC_MSG_CHECKING([if inter-process shared handles are requested])
1731 AC_ARG_ENABLE(shared-handles, [  --disable-shared-handles disable inter-process shared handles], try_shared_handles=$enableval, try_shared_handles=yes)
1732 AC_MSG_RESULT($try_shared_handles)
1733 if test "x$try_shared_handles" != "xyes"; then
1734         AC_DEFINE(DISABLE_SHARED_HANDLES, 1, [Disable inter-process shared handles])
1735         AC_SUBST(DISABLE_SHARED_HANDLES)
1736 fi
1737
1738 if test x$gc = xsgen; then
1739    if test x$with_tls != x__thread; then
1740           AC_MSG_ERROR([The SGEN garbage collector depends on a working __thread implementation, and either --with-thread=pthread was passed to configure, or the configure test for __thread failed.])
1741    fi
1742 fi
1743
1744 AC_ARG_ENABLE(nunit-tests, [  --enable-nunit-tests      Run the nunit tests of the class library on 'make check'])
1745 AM_CONDITIONAL(ENABLE_NUNIT_TESTS, [test x$enable_nunit_tests = xyes])
1746
1747 AC_MSG_CHECKING([if big-arrays are to be enabled])
1748 AC_ARG_ENABLE(big-arrays,  [  --enable-big-arrays       Enable the allocation and indexing of arrays greater than Int32.MaxValue], enable_big_arrays=$enableval, enable_big_arrays=no)
1749 if test "x$enable_big_arrays" = "xyes" ; then
1750     if  test "x$ac_cv_sizeof_void_p" = "x8"; then
1751         AC_DEFINE(MONO_BIG_ARRAYS,1,[Enable the allocation and indexing of arrays greater than Int32.MaxValue])
1752     else
1753         AC_MSG_ERROR([The allocation and indexing of arrays greater than Int32.MaxValue is not supported on this platform.])
1754     fi
1755 fi
1756 AC_MSG_RESULT($enable_big_arrays)
1757
1758 dnl **************
1759 dnl *** DTRACE ***
1760 dnl **************
1761
1762 AC_ARG_ENABLE(dtrace,[  --enable-dtrace Enable DTrace probes], enable_dtrace=$enableval, enable_dtrace=$has_dtrace)
1763
1764 if test "x$enable_dtrace" = "xyes"; then
1765    if test "x$has_dtrace" = "xno"; then
1766           AC_MSG_ERROR([DTrace probes are not supported on this platform.])
1767    fi
1768    AC_PATH_PROG(DTRACE, [dtrace], [no], [$PATH:/usr/sbin])
1769    if test "x$DTRACE" = "xno"; then
1770           AC_MSG_RESULT([dtrace utility not found, dtrace support disabled.])
1771           enable_dtrace=no
1772    fi
1773 fi
1774
1775 dtrace_g=no
1776 if test "x$enable_dtrace" = "xyes"; then
1777         AC_DEFINE(ENABLE_DTRACE, 1, [Enable DTrace probes])
1778         DTRACEFLAGS=
1779         if test "x$ac_cv_sizeof_void_p" = "x8"; then
1780                 case "$host" in
1781                         powerpc-*-darwin*)
1782                         DTRACEFLAGS="-arch ppc64"
1783                         ;;
1784                         i*86-*-darwin*)
1785                         DTRACEFLAGS="-arch x86_64"
1786                         ;;
1787                         *)
1788                         DTRACEFLAGS=-64
1789                         ;;
1790                 esac
1791         else
1792                 case "$host" in
1793                         powerpc-*-darwin*)
1794                         DTRACEFLAGS="-arch ppc"
1795                         ;;
1796                         i*86-*-darwin*)
1797                         DTRACEFLAGS="-arch i386"
1798                         ;;
1799                         *)
1800                         DTRACEFLAGS=-32
1801                         ;;
1802                 esac
1803         fi
1804         AC_SUBST(DTRACEFLAGS)
1805         case "$host" in
1806                 *-*-solaris*)
1807                 dtrace_g=yes
1808                 ;;
1809         esac
1810         AC_CHECK_HEADERS([sys/sdt.h])
1811 fi
1812 AM_CONDITIONAL(ENABLE_DTRACE, [test x$enable_dtrace = xyes])
1813 AM_CONDITIONAL(DTRACE_G_REQUIRED, [test x$dtrace_g = xyes])
1814
1815 dnl **************
1816 dnl ***  LLVM  ***
1817 dnl **************
1818
1819 AC_ARG_ENABLE(llvm,[  --enable-llvm     Enable the experimental LLVM back-end], enable_llvm=$enableval, enable_llvm=no)
1820
1821 if test "x$enable_llvm" = "xyes"; then
1822    AC_PATH_PROG(LLVM_CONFIG, llvm-config, no)
1823    if test "x$LLVM_CONFIG" = "xno"; then
1824           AC_MSG_ERROR([llvm-config not found.])
1825    fi
1826
1827    LLVM_CXXFLAGS=`$LLVM_CONFIG --cflags`
1828    LLVM_LDFLAGS=`$LLVM_CONFIG --ldflags`
1829    LLVM_LIBS=`$LLVM_CONFIG --libs core engine`
1830    LLVM_LIBS="$LLVM_LDFLAGS $LLVM_LIBS -lstdc++"
1831
1832    AC_SUBST(LLVM_CXXFLAGS)
1833    AC_SUBST(LLVM_LIBS)
1834    AC_DEFINE(ENABLE_LLVM, 1, [Enable the LLVM back end])
1835 fi
1836
1837 AM_CONDITIONAL(ENABLE_LLVM, [test x$enable_llvm = xyes])
1838
1839 TARGET="unknown"
1840 ACCESS_UNALIGNED="yes"
1841
1842 JIT_SUPPORTED=no
1843 INTERP_SUPPORTED=no
1844 LIBC="libc.so.6"
1845 INTL="libc.so.6"
1846 SQLITE="libsqlite.so.0"
1847 SQLITE3="libsqlite3.so.0"
1848 X11="libX11.so"
1849
1850 sizeof_register="SIZEOF_VOID_P"
1851
1852 jit_wanted=false
1853 interp_wanted=false
1854 case "$host" in
1855 #       mips-sgi-irix5.* | mips-sgi-irix6.*)
1856 #               TARGET=MIPS;
1857 #               ACCESS_UNALIGNED="no"
1858 #               ;;
1859         mips*)
1860                 TARGET=MIPS;
1861                 arch_target=mips;
1862                 ACCESS_UNALIGNED="no"
1863                 JIT_SUPPORTED=yes
1864                 jit_wanted=true
1865
1866                 AC_MSG_CHECKING(for mips n32)
1867                 AC_TRY_COMPILE([], [
1868                 void main () {
1869                 #if _MIPS_SIM != _ABIN32
1870                 #error Not mips n32
1871                 #endif
1872                 }
1873                 ],[
1874                 AC_MSG_RESULT(yes)
1875                 sizeof_register=8
1876                 ],[
1877                 AC_MSG_RESULT(no)
1878                 ])
1879                 ;;
1880         i*86-*-*)
1881                 TARGET=X86;
1882                 arch_target=x86;
1883                 JIT_SUPPORTED=yes
1884                 jit_wanted=true
1885                 case $host_os in
1886                   solaris*)
1887                         LIBC="libc.so"
1888                         INTL="libintl.so"
1889                         if test "x$ac_cv_sizeof_void_p" = "x8"; then
1890                                 TARGET=AMD64
1891                                 arch_target=amd64
1892                         fi
1893
1894                         # On solaris 10 x86, gcc prints a warning saying 'visibility attribute not supported on this configuration; ignored', but linking fails. A test case:
1895                         # int astruct __attribute__ ((visibility ("hidden")));
1896                         # void foo ()
1897                         # {
1898                         #       void *p = &astruct;
1899                         # }
1900                         # gcc -fPIC --shared -o libfoo.so foo.c
1901                         # yields:
1902                         # foo.c:6: warning: visibility attribute not supported in this configuration; ignored
1903                         # ld: fatal: relocation error: R_386_GOTOFF: file /var/tmp//ccxYR96k.o: symbol astruct: relocation must bind locally
1904                         have_visibility_hidden=no
1905
1906                 esac
1907                 ;;
1908         x86_64-*-* | amd64-*-*)
1909                 TARGET=AMD64;
1910                 arch_target=amd64;
1911                 JIT_SUPPORTED=yes
1912                 jit_wanted=true
1913                 ;;
1914         ia64-*-*)
1915                 TARGET=IA64
1916                 arch_target=ia64
1917                 ACCESS_UNALIGNED="no"
1918                 JIT_SUPPORTED=yes
1919                 jit_wanted=true
1920                 LIBC="libc.so.6.1"
1921                 INTL="libc.so.6.1"
1922                 AC_CHECK_LIB(unwind, _U_dyn_register, [], [AC_MSG_ERROR(library libunwind not found)])
1923                 libmono_ldflags="-lunwind"
1924                 ;;
1925         sparc*-*-*)
1926                 if test "x$ac_cv_sizeof_void_p" = "x8"; then
1927                    TARGET=SPARC64
1928                 else
1929                         TARGET=SPARC
1930                 fi
1931                 arch_target=sparc;
1932                 JIT_SUPPORTED=yes
1933                 ACCESS_UNALIGNED="no"
1934                 case $host_os in
1935                   linux*) ;;
1936                   *)
1937                         LIBC="libc.so"
1938                         INTL="libintl.so"
1939                 esac
1940                 jit_wanted=true
1941                 if test x"$GCC" = xyes; then
1942                         # We don't support v8 cpus
1943                         CFLAGS="$CFLAGS -Wno-cast-align -mcpu=v9"
1944                 fi
1945                 if test x"$AR" = xfalse; then
1946                         AC_MSG_ERROR([The required utility 'ar' is not found in your PATH. Usually it can be found in /usr/ccs/bin.])
1947                 fi
1948                 ;;
1949        alpha*-*-linux* | alpha*-*-osf*)
1950                 TARGET=ALPHA;
1951                 ACCESS_UNALIGNED="no"
1952                 JIT_SUPPORTED=yes
1953                 jit_wanted=true
1954                 arch_target=alpha;
1955                 CFLAGS="$CFLAGS -mieee -O0"
1956                 case $host_os in
1957                   linux*)
1958                         LIBC="libc.so.6.1"
1959                         INTL="libc.so.6.1"
1960                 esac
1961                ;;
1962         *-*-mingw*|*-*-cygwin*)
1963                 # When this is enabled, it leads to very strange crashes at runtime (gcc-3.4.4)
1964                 have_visibility_hidden=no
1965                 INTL="intl"
1966                 ;;
1967         hppa2.0w-hp-hpux11.00 | hppa64-hp-hpux11.00)
1968                 TARGET=HPPA;
1969                 arch_target=hppa;
1970                 LIBC="libc.sl"
1971                 ACCESS_UNALIGNED="no"
1972                 INTERP_SUPPORTED=yes
1973                 interp_wanted=true
1974                 ;;
1975         hppa*linux*)
1976                 TARGET=HPPA;
1977                 AC_DEFINE(MONO_ARCH_REGPARMS,1,[Architecture uses registers for Parameters])
1978                 arch_target=hppa;
1979                 ACCESS_UNALIGNED="no"
1980                 JIT_SUPPORTED=yes
1981                 jit_wanted=true
1982                 ;;
1983         macppc-*-openbsd* | powerpc*-*-linux* | powerpc-*-openbsd* | \
1984         powerpc-*-sysv* | powerpc-*-darwin* | powerpc-*-netbsd* )
1985                 if test "x$ac_cv_sizeof_void_p" = "x8"; then
1986                         TARGET=POWERPC64;
1987                         CPPFLAGS="$CPPFLAGS -D__mono_ppc__ -D__mono_ppc64__"
1988                         CFLAGS="$CFLAGS -mminimal-toc"
1989                 else
1990                         TARGET=POWERPC;
1991                         CPPFLAGS="$CPPFLAGS -D__mono_ppc__"
1992                 fi
1993                 AC_DEFINE(MONO_ARCH_REGPARMS,1,[Architecture uses registers for Parameters])
1994                 arch_target=ppc;
1995                 JIT_SUPPORTED=yes
1996                 jit_wanted=true
1997                 ;;
1998         arm*-darwin*)
1999                 TARGET=ARM;
2000                 arch_target=arm;
2001                 ACCESS_UNALIGNED="no"
2002                 JIT_SUPPORTED=yes
2003                 CPPFLAGS="$CPPFLAGS -DARM_FPU_NONE=1"
2004                 jit_wanted=true
2005                 ;;
2006         arm*-linux*)
2007                 TARGET=ARM;
2008                 arch_target=arm;
2009                 ACCESS_UNALIGNED="no"
2010                 JIT_SUPPORTED=yes
2011                 jit_wanted=true
2012                 ;;
2013         s390-*-linux*)
2014                 TARGET=S390;
2015                 AC_DEFINE(MONO_ARCH_REGPARMS,1,[Architecture uses registers for Parameters])
2016                 arch_target=s390;
2017                 ACCESS_UNALIGNED="no"
2018                 JIT_SUPPORTED=yes
2019                 jit_wanted=true
2020                 # Required CFLAGS for s390[x].  USE_STRING_INLINES is automatic with gcc 4.1
2021                 CFLAGS="$CFLAGS -mbackchain -D__USE_STRING_INLINES"
2022                 ;;
2023         s390x-*-linux*)
2024                 TARGET=S390x;
2025                 AC_DEFINE(MONO_ARCH_REGPARMS,1,[Architecture uses registers for Parameters])
2026                 arch_target=s390x;
2027                 ACCESS_UNALIGNED="no"
2028                 JIT_SUPPORTED=yes
2029                 jit_wanted=true
2030                 CFLAGS="$CFLAGS -mbackchain -D__USE_STRING_INLINES"
2031                 ;;
2032 esac
2033
2034 # FIXME: Define the others as well
2035 case "$TARGET" in
2036 X86)
2037         AC_DEFINE(TARGET_X86, 1, [...])
2038         ;;
2039 AMD64)
2040         AC_DEFINE(TARGET_AMD64, 1, [...])
2041         ;;
2042 ARM)
2043         AC_DEFINE(TARGET_ARM, 1, [...])
2044         ;;
2045 esac
2046
2047 if test "x$sizeof_register" = "x4"; then
2048    AC_DEFINE(SIZEOF_REGISTER,4,[size of machine integer registers])
2049 elif test "x$sizeof_register" = "x8"; then
2050    AC_DEFINE(SIZEOF_REGISTER,8,[size of machine integer registers])
2051 else
2052    AC_DEFINE(SIZEOF_REGISTER,SIZEOF_VOID_P,[size of machine integer registers])
2053 fi
2054
2055 if test "x$have_visibility_hidden" = "xyes"; then
2056    AC_DEFINE(HAVE_VISIBILITY_HIDDEN, 1, [Support for the visibility ("hidden") attribute])
2057 fi
2058
2059 AC_ARG_WITH(jit, [  --with-jit=yes,no              If you want to build scripts that default to the JIT (defaults to no)],[
2060         if test x$withval = xyes; then
2061            jit_wanted=true
2062         else
2063            jit_wanted=false
2064         fi
2065 ])
2066
2067 AC_ARG_WITH(interp, [  --with-interp=yes,no           If you want to build scripts that default to the interpreter (defaults to no)],[
2068         if test x$withval = xyes; then
2069            interp_wanted=true
2070         else
2071            interp_wanted=false
2072         fi
2073 ])
2074
2075 USEJIT=false
2076 if test x$JIT_SUPPORTED = xyes; then
2077    if $jit_wanted; then
2078       USEJIT=true
2079       jit_status="Building and using the JIT"
2080    else
2081       if $interp_wanted; then
2082          jit_status="Building the JIT, defaulting to the interpreter"
2083       else
2084          AC_ERROR(No JIT or interpreter support available or selected.)
2085       fi
2086    fi
2087 else
2088    if test x$interp_wanted = xtrue; then
2089       jit_status="interpreter"
2090    else
2091       AC_ERROR(No JIT or interpreter support available or selected.)
2092    fi
2093 fi
2094
2095 AM_CONDITIONAL(USE_JIT, test x$USEJIT = xtrue)
2096
2097 libsuffix=".so"
2098
2099 case "$host" in
2100      *-*-darwin*)
2101         libsuffix=".dylib"
2102         LIBC="libc.dylib"
2103         INTL="libintl.dylib"
2104         SQLITE="libsqlite.0.dylib"
2105         SQLITE3="libsqlite3.0.dylib"
2106         X11="libX11.dylib"
2107         ;;
2108      *-*-*netbsd*)
2109         LIBC="libc.so.12"
2110         INTL="libintl.so.0"
2111         ;;
2112     *-*-*freebsd*)
2113         LIBC="libc.so"
2114         INTL="libintl.so"
2115         ;;
2116     *-*-*openbsd*)
2117         LIBC="libc.so"
2118         INTL="libintl.so"
2119         ;;
2120     *-*-*linux*)
2121         AC_PATH_X
2122         AC_MSG_CHECKING(for the soname of libX11.so)
2123         for i in $x_libraries /usr/lib /usr/lib64; do
2124                 for r in 4 5 6; do
2125                         if test -f $i/libX11.so.$r; then
2126                                 X11=libX11.so.$r
2127                                 AC_MSG_RESULT($X11)
2128                         fi
2129                 done
2130         done
2131
2132         if test "x$X11" = "xlibX11.so"; then
2133                 AC_MSG_WARN([Could not find X development libs. Do you have the -devel package installed? WinForms may not work...]);
2134         fi
2135         ;;
2136 esac
2137
2138
2139 AC_SUBST(libsuffix)
2140
2141 AC_CHECK_HEADERS(valgrind/memcheck.h)
2142
2143 if test "x$TARGET" = "xAMD64" -o "x$TARGET" = "xX86"; then
2144         if test "x$with_tls" = "x__thread"; then
2145                 #
2146                 # On some linux distributions, TLS works in executables, but linking
2147                 # against a shared library containing TLS fails with:
2148                 # undefined reference to `__tls_get_addr'
2149                 #
2150                 rm -f conftest.c conftest.so conftest
2151                 echo "static __thread int foo; void main () { foo = 5; }" > conftest.c
2152                 $CC -fPIC --shared -o conftest.so conftest.c > /dev/null 2>&1
2153                 $CC -o conftest conftest.so > /dev/null 2>&1
2154                 if test ! -f conftest; then
2155                    AC_MSG_WARN([Disabling usage of __thread.]);
2156                    with_tls=pthread
2157                 fi
2158                 rm -f conftest.c conftest.so conftest
2159         fi
2160 fi
2161
2162 mono_debugger_supported=no
2163 if test "x$TARGET" = "xAMD64" -o "x$TARGET" = "xX86" -o "x$TARGET" = "xALPHA"; then
2164         if test x$use_included_gc = xyes; then
2165                 case "$host" in
2166                 *-*-*linux*)
2167                         mono_debugger_supported=yes
2168                         ;;
2169                 esac
2170         fi
2171 fi
2172
2173 AC_MSG_CHECKING(if the Mono Debugger is supported on this platform)
2174 if test "x$mono_debugger_supported" = "xyes"; then
2175         AC_DEFINE(MONO_DEBUGGER_SUPPORTED,1,[The Mono Debugger is supported on this platform])
2176 fi
2177 AC_MSG_RESULT($mono_debugger_supported)
2178 AM_CONDITIONAL(MONO_DEBUGGER_SUPPORTED, test x$mono_debugger_supported = xyes)
2179
2180 if test "x$with_tls" = "x__thread"; then
2181         AC_DEFINE(HAVE_KW_THREAD, 1, [Have __thread keyword])
2182         # Pass the information to libgc
2183         CPPFLAGS="$CPPFLAGS -DUSE_COMPILER_TLS"
2184         AC_MSG_CHECKING(if the tls_model attribute is supported)
2185         AC_TRY_COMPILE([static __thread int foo __attribute__((tls_model("initial-exec")));], [
2186                 ], [
2187                         AC_MSG_RESULT(yes)
2188                         AC_DEFINE(HAVE_TLS_MODEL_ATTR, 1, [tld_model available])
2189                 ], [
2190                         AC_MSG_RESULT(no)
2191         ])
2192 fi
2193
2194 if test ${TARGET} = ARM && test x$cross_compiling = xno && test x$enable_mcs_build != xno; then
2195         dnl ******************************************
2196         dnl *** Check to see what FPU is available ***
2197         dnl ******************************************
2198         AC_MSG_CHECKING(which FPU to use)
2199
2200         AC_TRY_COMPILE([], [
2201                 __asm__ ("ldfd f0, [r0]");
2202                 ], fpu=FPA, fpu=NONE)
2203
2204         AC_MSG_RESULT($fpu)
2205         CPPFLAGS="$CPPFLAGS -DARM_FPU_$fpu=1"
2206         unset fpu
2207 fi
2208
2209 if test ${TARGET} = unknown; then
2210         CPPFLAGS="$CPPFLAGS -DNO_PORT"
2211         AC_MSG_WARN("mono has not been ported to $host: some things may not work.")
2212 fi
2213
2214 if test ${ACCESS_UNALIGNED} = no; then
2215         CPPFLAGS="$CPPFLAGS -DNO_UNALIGNED_ACCESS"
2216 fi
2217
2218 case "x$gc" in
2219         xincluded)
2220                 # Pass CPPFLAGS to libgc configure
2221                 # We should use a separate variable for this to avoid passing useless and
2222                 # potentially problematic defines to libgc (like -D_FILE_OFFSET_BITS=64)
2223                 # This should be executed late so we pick up the final version of CPPFLAGS
2224                 # The problem with this approach, is that during a reconfigure, the main
2225                 # configure scripts gets invoked with these arguments, so we use separate
2226                 # variables understood by libgc's configure to pass CPPFLAGS and CFLAGS.
2227                 LIBGC_CPPFLAGS=$CPPFLAGS
2228                 if test x$TARGET = xSPARC -o x$TARGET = xSPARC64; then
2229                         LIBGC_CPPFLAGS=`echo $LIBGC_CPPFLAGS | sed -e 's/-D_FILE_OFFSET_BITS=64//g'`
2230                 fi
2231                 ac_configure_args="$ac_configure_args --disable-embed-check --with-libgc-threads=$libgc_threads $libgc_configure_args \"CPPFLAGS_FOR_LIBGC=$LIBGC_CPPFLAGS\" \"CFLAGS_FOR_LIBGC=$CFLAGS_FOR_LIBGC\""
2232                 AC_CONFIG_SUBDIRS(libgc)
2233                 ;;
2234 esac
2235
2236 PROFILE2=yes
2237 AC_ARG_WITH(profile2,  [  --with-profile2=yes,no          If you want to install the 2.0 FX (defaults to yes)],[
2238         if test x$with_profile2 = xno; then
2239               PROFILE2=no
2240         fi
2241 ])
2242
2243 MOONLIGHT=yes
2244 AC_ARG_WITH(moonlight,[  --with-moonlight=yes,no        If you want to build the Moonlight 2.1 assemblies (defaults to yes)],[
2245         if test x$with_moonlight = xno; then
2246               MOONLIGHT=no
2247         fi
2248 ])
2249
2250 OPROFILE=no
2251 AC_ARG_WITH(oprofile,[  --with-oprofile=no,<oprofile install dir>   Enable oprofile support (defaults to no)],[
2252         if test x$with_oprofile != xno; then
2253             oprofile_include=$with_oprofile/include
2254             if test ! -f $oprofile_include/opagent.h; then
2255                   AC_MSG_ERROR([oprofile include file not found at $oprofile_include/opagent.h])
2256                 fi
2257             OPROFILE=yes
2258                 OPROFILE_CFLAGS="-I$oprofile_include"
2259             OPROFILE_LIBS="-L$with_oprofile/lib/oprofile -lopagent"
2260             AC_DEFINE(HAVE_OPROFILE,1,[Have oprofile support])
2261         fi
2262 ])
2263
2264 MALLOC_MEMPOOLS=no
2265 AC_ARG_WITH(malloc_mempools,[  --with-malloc-mempools=yes,no  Use malloc for each single mempool allocation (only for runtime debugging, defaults to no)],[
2266         if test x$with_malloc_mempools = xyes; then
2267                 MALLOC_MEMPOOLS=yes
2268                 AC_DEFINE(USE_MALLOC_FOR_MEMPOOLS,1,[Use malloc for each single mempool allocation])
2269         fi
2270 ])
2271
2272
2273 DISABLE_MCS_DOCS=no
2274 AC_ARG_WITH(mcs_docs,[  --with-mcs-docs=yes,no         If you want to build the documentation under mcs (defaults to yes)],[
2275         if test x$with_mcs_docs != xyes; then
2276                 DISABLE_MCS_DOCS=yes
2277         fi
2278 ])
2279
2280 AM_CONDITIONAL(HAVE_OPROFILE, test x$OPROFILE = xyes)
2281 AC_SUBST(OPROFILE_CFLAGS)
2282 AC_SUBST(OPROFILE_LIBS)
2283
2284 libmono_ldflags="$libmono_ldflags $LIBS"
2285
2286 AM_CONDITIONAL(INSTALL_2_0, test x$PROFILE2 = xyes)
2287 AM_CONDITIONAL(INSTALL_2_1, test x$MOONLIGHT = xyes)
2288
2289 AM_CONDITIONAL(MIPS_GCC, test ${TARGET}${ac_cv_prog_gcc} = MIPSyes)
2290 AM_CONDITIONAL(MIPS_SGI, test ${TARGET}${ac_cv_prog_gcc} = MIPSno)
2291 AM_CONDITIONAL(SPARC, test x$TARGET = xSPARC)
2292 AM_CONDITIONAL(SPARC64, test x$TARGET = xSPARC64)
2293 AM_CONDITIONAL(X86, test x$TARGET = xX86)
2294 AM_CONDITIONAL(AMD64, test x$TARGET = xAMD64)
2295 AM_CONDITIONAL(ALPHA, test x$TARGET = xALPHA)
2296 AM_CONDITIONAL(IA64, test x$TARGET = xIA64)
2297 AM_CONDITIONAL(M68K, test x$TARGET = xM68K)
2298 AM_CONDITIONAL(MIPS, test x$TARGET = xMIPS)
2299 AM_CONDITIONAL(POWERPC, test x$TARGET = xPOWERPC)
2300 AM_CONDITIONAL(POWERPC64, test x$TARGET = xPOWERPC64)
2301 AM_CONDITIONAL(ARM, test x$TARGET = xARM)
2302 AM_CONDITIONAL(S390, test x$TARGET = xS390)
2303 AM_CONDITIONAL(S390x, test x$TARGET = xS390x)
2304 AM_CONDITIONAL(HPPA, test x$TARGET = xHPPA)
2305
2306 AM_CONDITIONAL(JIT_SUPPORTED, test x$JIT_SUPPORTED = xyes)
2307 AM_CONDITIONAL(INTERP_SUPPORTED, test x$interp_wanted = xtrue)
2308 AM_CONDITIONAL(INCLUDED_LIBGC, test x$gc = xincluded)
2309
2310 AC_SUBST(LIBC)
2311 AC_SUBST(INTL)
2312 AC_SUBST(SQLITE)
2313 AC_SUBST(SQLITE3)
2314 AC_SUBST(X11)
2315 AC_DEFINE_UNQUOTED(ARCHITECTURE,"$arch_target",[The architecture this is running on])
2316 AC_SUBST(arch_target)
2317 AC_SUBST(CFLAGS)
2318 AC_SUBST(CPPFLAGS)
2319 AC_SUBST(LDFLAGS)
2320
2321 mono_build_root=`pwd`
2322 AC_SUBST(mono_build_root)
2323
2324 if test x$USEJIT = xtrue; then
2325   mono_runtime=mono/mini/mono
2326 else
2327   mono_runtime=mono/interpreter/mint
2328 fi
2329 AC_SUBST(mono_runtime)
2330
2331 mono_cfg_root=$mono_build_root/runtime
2332 if test x$platform_win32 = xyes; then
2333   if test "x$cross_compiling" = "xno"; then
2334     mono_cfg_dir=`cygpath -w -a $mono_cfg_root`\\etc
2335   else
2336     mono_cfg_dir=`echo $mono_cfg_root | tr '/' '\\\'`\\etc
2337   fi
2338 else
2339   mono_cfg_dir=$mono_cfg_root/etc
2340 fi
2341 AC_SUBST(mono_cfg_dir)
2342
2343 AC_CONFIG_FILES([po/mcs/Makefile.in])
2344
2345 AC_CONFIG_FILES([runtime/mono-wrapper],[chmod +x runtime/mono-wrapper])
2346 AC_CONFIG_FILES([runtime/monodis-wrapper],[chmod +x runtime/monodis-wrapper])
2347
2348 AC_CONFIG_COMMANDS([runtime/etc/mono/1.0/machine.config],
2349 [   depth=../../../..
2350     case $srcdir in
2351     [[\\/$]]* | ?:[[\\/]]* ) reldir=$srcdir ;;
2352     .) reldir=$depth ;;
2353     *) reldir=$depth/$srcdir ;;
2354     esac
2355     $ac_aux_dir/install-sh -d runtime/etc/mono/1.0
2356     cd runtime/etc/mono/1.0
2357     rm -f machine.config
2358     $LN_S $reldir/data/net_1_1/machine.config machine.config
2359     cd $depth
2360 ],[LN_S='$LN_S'])
2361
2362 AC_CONFIG_COMMANDS([runtime/etc/mono/2.0/machine.config],
2363 [   depth=../../../..
2364     case $srcdir in
2365     [[\\/$]]* | ?:[[\\/]]* ) reldir=$srcdir ;;
2366     .) reldir=$depth ;;
2367     *) reldir=$depth/$srcdir ;;
2368     esac
2369     $ac_aux_dir/install-sh -d runtime/etc/mono/2.0
2370     cd runtime/etc/mono/2.0
2371     rm -f machine.config
2372     $LN_S $reldir/data/net_2_0/machine.config machine.config
2373     cd $depth
2374 ],[LN_S='$LN_S'])
2375
2376 AC_CONFIG_COMMANDS([runtime/etc/mono/2.0/web.config],
2377 [   depth=../../../..
2378     case $srcdir in
2379     [[\\/$]]* | ?:[[\\/]]* ) reldir=$srcdir ;;
2380     .) reldir=$depth ;;
2381     *) reldir=$depth/$srcdir ;;
2382     esac
2383     $ac_aux_dir/install-sh -d runtime/etc/mono/2.0
2384     cd runtime/etc/mono/2.0
2385     rm -f web.config
2386     $LN_S $reldir/data/net_2_0/web.config web.config
2387     cd $depth
2388 ],[LN_S='$LN_S'])
2389
2390 AC_CONFIG_COMMANDS([runtime/etc/mono/browscap.ini],
2391 [   depth=../../..
2392     case $srcdir in
2393     [[\\/$]]* | ?:[[\\/]]* ) reldir=$srcdir ;;
2394     .) reldir=$depth ;;
2395     *) reldir=$depth/$srcdir ;;
2396     esac
2397     $ac_aux_dir/install-sh -d runtime/etc/mono/
2398     cd runtime/etc/mono/
2399     rm -f browscap.ini
2400     $LN_S $reldir/data/browscap.ini browscap.ini
2401     cd $depth
2402 ],[LN_S='$LN_S'])
2403
2404 AC_CONFIG_COMMANDS([runtime/etc/mono/2.0/Browsers/Compat.browser],
2405 [   depth=../../../../..
2406     case $srcdir in
2407     [[\\/$]]* | ?:[[\\/]]* ) reldir=$srcdir ;;
2408     .) reldir=$depth ;;
2409     *) reldir=$depth/$srcdir ;;
2410     esac
2411     $ac_aux_dir/install-sh -d runtime/etc/mono/2.0/Browsers/
2412     cd runtime/etc/mono/2.0/Browsers
2413     rm -f Compat.browser
2414     $LN_S $reldir/data/net_2_0/Browsers/Compat.browser Compat.browser
2415     cd $depth
2416 ],[LN_S='$LN_S'])
2417
2418 if test x$enable_quiet_build = xyes; then
2419    AC_CONFIG_COMMANDS([quiet], [for i in `find mono libgc support -name Makefile.in | sed -e 's/Makefile.in/Makefile/g'`; do if test -f $i; then $srcdir/scripts/patch-quiet.sh $i; fi; done], [shell=$SHELL])
2420    AC_CONFIG_COMMANDS([quiet-libtool], [sed -e 's/$echo "copying selected/$show "copying selected/g' < libtool > libtool.tmp && mv libtool.tmp libtool && chmod a+x libtool; sed -e 's/$ECHO "copying selected/# "copying selected/g' < libtool > libtool.tmp && mv libtool.tmp libtool && chmod a+x libtool])
2421 fi
2422
2423 AC_OUTPUT([
2424 Makefile
2425 mono-uninstalled.pc
2426 scripts/mono-find-provides
2427 scripts/mono-find-requires
2428 mono/Makefile
2429 mono/utils/Makefile
2430 mono/metadata/Makefile
2431 mono/dis/Makefile
2432 mono/cil/Makefile
2433 mono/arch/Makefile
2434 mono/arch/x86/Makefile
2435 mono/arch/amd64/Makefile
2436 mono/arch/hppa/Makefile
2437 mono/arch/ppc/Makefile
2438 mono/arch/sparc/Makefile
2439 mono/arch/s390/Makefile
2440 mono/arch/s390x/Makefile
2441 mono/arch/arm/Makefile
2442 mono/arch/alpha/Makefile
2443 mono/arch/ia64/Makefile
2444 mono/arch/mips/Makefile
2445 mono/interpreter/Makefile
2446 mono/tests/Makefile
2447 mono/tests/tests-config
2448 mono/tests/assemblyresolve/Makefile
2449 mono/tests/cas/Makefile
2450 mono/tests/cas/assembly/Makefile
2451 mono/tests/cas/demand/Makefile
2452 mono/tests/cas/inheritance/Makefile
2453 mono/tests/cas/linkdemand/Makefile
2454 mono/tests/cas/threads/Makefile
2455 mono/benchmark/Makefile
2456 mono/monograph/Makefile
2457 mono/io-layer/Makefile
2458 mono/mini/Makefile
2459 mono/profiler/Makefile
2460 ikvm-native/Makefile
2461 scripts/Makefile
2462 man/Makefile
2463 web/Makefile
2464 docs/Makefile
2465 data/Makefile
2466 data/net_1_1/Makefile
2467 data/net_2_0/Makefile
2468 data/net_2_0/Browsers/Makefile
2469 data/mint.pc
2470 data/mono.pc
2471 data/mono-cairo.pc
2472 data/mono-nunit.pc
2473 data/mono-options.pc
2474 data/mono-lineeditor.pc
2475 data/monodoc.pc
2476 data/mono.web.pc
2477 data/dotnet.pc
2478 data/dotnet35.pc
2479 data/wcf.pc
2480 data/cecil.pc
2481 data/system.web.extensions_1.0.pc
2482 data/system.web.extensions.design_1.0.pc
2483 data/system.web.mvc.pc
2484 samples/Makefile
2485 support/Makefile
2486 data/config
2487 tools/Makefile
2488 tools/locale-builder/Makefile
2489 runtime/Makefile
2490 msvc/Makefile
2491 po/Makefile
2492 ])
2493
2494 if test x$platform_win32 = xyes; then
2495    # Get rid of 'cyg' prefixes in library names
2496    sed -e "s/\/cyg\//\/\//" libtool > libtool.new; mv libtool.new libtool; chmod 755 libtool
2497    # libtool seems to inherit -mno-cygwin from our CFLAGS, and uses it to compile its executable
2498    # wrapper scripts which use exec(). gcc has no problem compiling+linking this, but the resulting
2499    # executable doesn't work...
2500    sed -e "s,-mno-cygwin,,g" libtool > libtool.new; mv libtool.new libtool; chmod 755 libtool
2501 fi
2502
2503 dnl
2504 dnl Consistency settings
2505 dnl
2506 if test x$cross_compiling = xyes -o x$enable_mcs_build = xno; then
2507    DISABLE_MCS_DOCS=yes
2508 fi
2509
2510 (
2511   case $prefix in
2512   NONE) prefix=$ac_default_prefix ;;
2513   esac
2514   case $exec_prefix in
2515   NONE) exec_prefix='${prefix}' ;;
2516   esac
2517
2518   test -w $srcdir/$mcsdir/build || chmod +w $srcdir/$mcsdir/build
2519
2520   #
2521   # If we are cross compiling, we don't build in the mcs/ tree.  Let us not clobber
2522   # any existing config.make.  This allows people to share the same source tree
2523   # with different build directories, one native and one cross
2524   #
2525   if test x$cross_compiling = xno && test x$enable_mcs_build != xno; then
2526     echo "prefix=$prefix" > $srcdir/$mcsdir/build/config.make
2527     echo "exec_prefix=$exec_prefix" >> $srcdir/$mcsdir/build/config.make
2528     echo "sysconfdir=$sysconfdir" >> $srcdir/$mcsdir/build/config.make
2529     echo 'mono_libdir=${exec_prefix}/lib' >> $srcdir/$mcsdir/build/config.make
2530     echo 'MCS_FLAGS = $(PLATFORM_DEBUG_FLAGS)' >> $srcdir/$mcsdir/build/config.make
2531     echo 'IL_FLAGS = /debug' >> $srcdir/$mcsdir/build/config.make
2532     echo "RUNTIME = $mono_build_root/runtime/mono-wrapper" >> $srcdir/$mcsdir/build/config.make
2533     echo "ILDISASM = $mono_build_root/runtime/monodis-wrapper" >> $srcdir/$mcsdir/build/config.make
2534     case $INSTALL in
2535     [[\\/$]]* | ?:[[\\/]]* ) mcs_INSTALL=$INSTALL ;;
2536     *) mcs_INSTALL=$mono_build_root/$INSTALL ;;
2537     esac
2538
2539     echo "INSTALL = $mcs_INSTALL" >> $srcdir/$mcsdir/build/config.make
2540
2541     export VERSION
2542     [myver=$($AWK 'BEGIN {
2543       split (ENVIRON["VERSION"] ".0.0.0", vsplit, ".")
2544       if(length(vsplit [1]) > 4) {
2545         split (substr(ENVIRON["VERSION"], 0, 4) "." substr(ENVIRON["VERSION"], 5) ".0.0", vsplit, ".")
2546       }
2547       print vsplit [1] "." vsplit [2] "." vsplit [3] "." vsplit [4]
2548     }')]
2549
2550     echo "MONO_VERSION = $myver" >> $srcdir/$mcsdir/build/config.make
2551   fi
2552
2553   if test x$platform_darwin = xyes; then
2554         echo "PLATFORM = darwin" >> $srcdir/$mcsdir/build/config.make
2555   fi
2556
2557   if test x$TARGET = xAMD64 -a x$platform_win32 = xno -a "x$AOT_SUPPORTED" = "xyes"; then
2558          echo "ENABLE_AOT = 1" >> $srcdir/$mcsdir/build/config.make
2559   fi
2560
2561   # if we have an olive folder, override the default settings
2562   if test -d $olivedir; then
2563
2564     test -w $srcdir/$olivedir/build || chmod +w $srcdir/$olivedir/build
2565
2566     if test x$cross_compiling = xno && test x$enable_olive_build != xno; then
2567       echo "prefix=$prefix" > $srcdir/$olivedir/build/config.make
2568       echo "exec_prefix=$exec_prefix" >> $srcdir/$olivedir/build/config.make
2569       echo 'mono_libdir=${exec_prefix}/lib' >> $srcdir/$olivedir/build/config.make
2570       echo 'MCS_FLAGS = $(PLATFORM_DEBUG_FLAGS)' >> $srcdir/$olivedir/build/config.make
2571       echo "RUNTIME = $mono_build_root/runtime/mono-wrapper" >> $srcdir/$olivedir/build/config.make
2572       echo "MONO_VERSION = $myver" >> $srcdir/$olivedir/build/config.make
2573           if test x$with_moonlight = xyes; then
2574         echo "WITH_MOONLIGHT = yes" >> $srcdir/$olivedir/build/config.make
2575       fi
2576     fi
2577   fi
2578
2579   if test x$DISABLE_MCS_DOCS = xyes; then
2580         echo "DISABLE_MCS_DOCS = yes" >> $srcdir/$mcsdir/build/config.make
2581   fi
2582 )
2583
2584 libgdiplus_msg=${libgdiplus_loc:-assumed to be installed}
2585
2586 echo "
2587         mcs source:    $mcs_topdir
2588         olive source:  $olive_topdir
2589
2590         GC:            $gc
2591         TLS:           $with_tls
2592         SIGALTSTACK:   $with_sigaltstack
2593         Engine:        $jit_status
2594         2.0 Profile:   $PROFILE2
2595         2.1 Alpha:     $MOONLIGHT
2596         JNI support:   $jdk_headers_found
2597         libgdiplus:    $libgdiplus_msg
2598         zlib:          $zlib_msg
2599         oprofile:      $OPROFILE
2600         BigArrays:     $enable_big_arrays
2601         DTrace:        $enable_dtrace
2602         Parallel Mark: $enable_parallel_mark
2603         LLVM Back End: $enable_llvm
2604         $disabled
2605
2606 "
2607 if test x$with_static_mono = xno -a "x$platform_win32" != "xyes"; then
2608    AC_MSG_WARN(Turning off static Mono is a risk, you might run into unexpected bugs)
2609 fi
2610
2611 if test x$gc = xsgen; then
2612         echo IMPORTANT:
2613         echo IMPORTANT: You have selected an experimental, work-in-progress
2614         echo IMPORTANT: GC engine.  This GC engine is currently not supported
2615         echo IMPORTANT: and is not yet ready for use.
2616         echo IMPORTANT:
2617         echo IMPORTANT: There are known problems with it, use at your own risk.
2618 fi
2619
2620 if test x$enable_llvm = xyes; then
2621    echo IMPORTANT:
2622    echo IMPORTANT: The LLVM Back End is experimental and does not work yet.
2623    echo IMPORTANT:
2624 fi