# Copyright (c) 1999-2001 by Red Hat, Inc. All rights reserved.
-#
+#
# THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
# OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
-#
+#
# Permission is hereby granted to use or copy this program
# for any purpose, provided the above notices are retained on all copies.
# Permission to modify the code and to distribute modified code is granted,
# Initialization
# ==============
-AC_INIT(gc,7.2alpha3,Hans.Boehm@hp.com)
+AC_INIT(gc,7.2alpha4,Hans.Boehm@hp.com)
## version must conform to [0-9]+[.][0-9]+(alpha[0-9]+)?
AC_CONFIG_SRCDIR(gcj_mlc.c)
-AC_CANONICAL_TARGET
+AC_CONFIG_MACRO_DIR([m4])
+AC_CANONICAL_TARGET
AC_PREREQ(2.53)
-AC_REVISION($Revision: 1.44 $)
+AC_REVISION($Revision: 1.58 $)
GC_SET_VERSION
-AM_INIT_AUTOMAKE([foreign dist-bzip2 subdir-objects nostdinc])
+AM_INIT_AUTOMAKE([foreign dist-bzip2 nostdinc])
+AM_CONFIG_HEADER([include/private/config.h])
AM_MAINTAINER_MODE
AC_SUBST(PACKAGE)
AC_ARG_ENABLE(cplusplus,
[AC_HELP_STRING([--enable-cplusplus], [install C++ support])])
-INCLUDES=-I${srcdir}/include
+dnl Features which may be selected in the following thread-detection switch.
+AH_TEMPLATE([PARALLEL_MARK], [Define to enable parallel marking.])
+AH_TEMPLATE([THREAD_LOCAL_ALLOC],
+ [Define to enable thread-local allocation optimisation.])
+AH_TEMPLATE([USE_COMPILER_TLS],
+ [Define to use of compiler-support for thread-local variables.])
+
+dnl Thread selection macros.
+AH_TEMPLATE([GC_THREADS], [Define to support threads.])
+AH_TEMPLATE([GC_AIX_THREADS], [Define to support IBM AIX threads.])
+AH_TEMPLATE([GC_DARWIN_THREADS], [Define to support Darwin pthreads.])
+AH_TEMPLATE([GC_FREEBSD_THREADS], [Define to support FreeBSD pthreads.])
+AH_TEMPLATE([GC_GNU_THREADS], [Define to support GNU pthreads.])
+AH_TEMPLATE([GC_HPUX_THREADS], [Define to support HP/UX 11 pthreads.])
+AH_TEMPLATE([GC_IRIX_THREADS], [Define to support Irix pthreads.])
+AH_TEMPLATE([GC_LINUX_THREADS], [Define to support pthreads on Linux.])
+AH_TEMPLATE([GC_NETBSD_THREADS], [Define to support NetBSD pthreads.])
+AH_TEMPLATE([GC_OPENBSD_THREADS], [Define to support OpenBSD pthreads.])
+AH_TEMPLATE([GC_OSF1_THREADS], [Define to support Tru64 pthreads.])
+AH_TEMPLATE([GC_SOLARIS_THREADS], [Define to support Solaris pthreads.])
+AH_TEMPLATE([GC_WIN32_THREADS], [Define to support win32 threads.])
+
+dnl System header feature requests.
+AH_TEMPLATE([_POSIX_C_SOURCE], [The POSIX feature macro.])
+AH_TEMPLATE([_PTHREADS], [Indicates the use of pthreads (NetBSD).])
+
THREADDLLIBS=
need_atomic_ops_asm=false
## Libraries needed to support dynamic loading and/or threads.
AC_DEFINE(PARALLEL_MARK)
fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
- AC_MSG_WARN("Explict GC_INIT() calls may be required.");
+ AC_MSG_WARN("Explicit GC_INIT() calls may be required.");
;;
*-*-linux*)
AC_DEFINE(GC_LINUX_THREADS)
AC_DEFINE(PARALLEL_MARK)
fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
- AC_MSG_WARN("Explict GC_INIT() calls may be required.");
+ AC_MSG_WARN("Explicit GC_INIT() calls may be required.");
THREADDLLIBS="-lpthread -lrt"
# HPUX needs REENTRANT for the _r calls.
- AC_DEFINE(_REENTRANT, 1, [Required define if using POSIX threads])
+ AC_DEFINE(_REENTRANT, 1, [Required define if using POSIX threads.])
;;
*-*-hpux10*)
AC_MSG_WARN("Only HP-UX 11 POSIX threads are supported.")
;;
+ *-*-openbsd*)
+ AC_DEFINE(GC_OPENBSD_THREADS)
+ THREADDLLIBS=-pthread
+ INCLUDES="$INCLUDES -pthread"
+ openbsd_threads=true
+ ;;
*-*-freebsd*)
AC_MSG_WARN("FreeBSD does not yet fully support threads with Boehm GC.")
AC_DEFINE(GC_FREEBSD_THREADS)
AC_DEFINE(GC_IRIX_THREADS)
;;
*-*-cygwin*)
- AC_DEFINE(GC_WIN32_THREADS)
+ AC_DEFINE(GC_THREADS)
+ if test "${enable_parallel_mark}" = yes; then
+ AC_DEFINE(PARALLEL_MARK)
+ fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
+ # Cygwin doesn't have a real libpthread, so Libtool can't link
+ # against it.
+ THREADDLLIBS=""
win32_threads=true
;;
*-*-darwin*)
AC_DEFINE(GC_DARWIN_THREADS)
AC_DEFINE(THREAD_LOCAL_ALLOC)
- AC_MSG_WARN("Explict GC_INIT() calls may be required.");
+ AC_MSG_WARN("Explicit GC_INIT() calls may be required.");
# Parallel-mark is currently unreliable on Darwin; ignore request
# if test "${enable_parallel_mark}" = yes; then
# AC_DEFINE(PARALLEL_MARK)
if test "${enable_parallel_mark}" = yes; then
AC_DEFINE(PARALLEL_MARK)
AC_DEFINE(THREAD_LOCAL_ALLOC)
- AC_MSG_WARN("Explict GC_INIT() calls may be required.");
+ AC_MSG_WARN("Explicit GC_INIT() calls may be required.");
# May want to enable it in other cases, too.
# Measurements havent yet been done.
fi
esac
;;
win32)
- AC_DEFINE(GC_WIN32_THREADS)
+ AC_DEFINE(GC_THREADS)
+ if test "${enable_parallel_mark}" = yes; then
+ AC_DEFINE(PARALLEL_MARK)
+ AC_DEFINE(THREAD_LOCAL_ALLOC)
+ fi
win32_threads=true
- dnl Wine getenv may not return NULL for missing entry
- AC_DEFINE(NO_GETENV)
+ AC_DEFINE([EMPTY_GETENV_RESULTS], [1],
+ [Wine getenv may not return NULL for missing entry.])
;;
dgux386)
THREADS=dgux386
AC_DEFINE(PARALLEL_MARK)
fi
AC_DEFINE(THREAD_LOCAL_ALLOC)
- AC_MSG_WARN("Explict GC_INIT() calls may be required.");
- AC_DEFINE(GC_DGUX386_THREADS)
- AC_DEFINE(DGUX_THREADS)
+ AC_MSG_WARN("Explicit GC_INIT() calls may be required.");
+ AC_DEFINE([GC_DGUX386_THREADS], 1,
+ [Define to enable support for DB/UX threads on i386.])
+ AC_DEFINE([DGUX_THREADS], 1,
+ [Define to enable support for DB/UX threads.])
# Enable _POSIX4A_DRAFT10_SOURCE with flag -pthread
INCLUDES="-pthread $INCLUDES"
;;
AM_CONDITIONAL(PTHREADS, test x$THREADS = xposix)
AM_CONDITIONAL(DARWIN_THREADS, test x$darwin_threads = xtrue)
AM_CONDITIONAL(WIN32_THREADS, test x$win32_threads = xtrue)
+AM_CONDITIONAL(OPENBSD_THREADS, test x$openbsd_threads = xtrue)
-case "$host" in
+case "$host" in
powerpc-*-darwin*)
powerpc_darwin=true
;;
AM_CONDITIONAL(COMPILER_XLC,test $compiler_xlc = yes)
if test $compiler_xlc = yes -a "$powerpc_darwin" = true; then
# the darwin stack-frame-walking code is completely broken on xlc
- AC_DEFINE(DARWIN_DONT_PARSE_STACK)
+ AC_DEFINE([DARWIN_DONT_PARSE_STACK], 1, [See doc/README.macros.])
fi
# We never want libdl on darwin. It is a fake libdl that just ends up making
-# dyld calls anyway
+# dyld calls anyway. The same applies to Cygwin.
case "$host" in
*-*-darwin*) ;;
+ *-*-cygwin*) ;;
*)
AC_CHECK_LIB(dl, dlopen, THREADDLLIBS="$THREADDLLIBS -ldl")
;;
no)
;;
*)
- AC_DEFINE(ECOS)
+ AC_DEFINE([ECOS], 1, [Define to enable eCos target support.])
CXXINCLUDES="-I${TARGET_ECOS}/include"
addobjs="$addobjs ecos.lo"
;;
# Configuration of machine-dependent code
#
-AC_MSG_CHECKING(which machine-dependent code should be used)
+AC_MSG_CHECKING(which machine-dependent code should be used)
machdep=
case "$host" in
alpha-*-openbsd*)
machdep="mach_dep.lo"
;;
i?86-*-solaris2.[[89]] | i?86-*-solaris2.1?)
- AC_DEFINE(SOLARIS25_PROC_VDB_BUG_FIXED)
+ AC_DEFINE([SOLARIS25_PROC_VDB_BUG_FIXED], 1,
+ [See the comment in gcconfig.h.])
;;
mipstx39-*-elf*)
machdep="mach_dep.lo"
- AC_DEFINE(STACKBASE, __stackbase)
- AC_DEFINE(DATASTART_IS_ETEXT)
;;
mips-dec-ultrix*)
machdep="mach-dep.lo"
;;
mips-nec-sysv*|mips-unknown-sysv*)
;;
- mips*-*-linux*)
- ;;
+ mips*-*-linux*)
+ ;;
mips-*-*)
machdep="mach_dep.lo"
dnl AC_DEFINE(NO_EXECUTE_PERMISSION)
sparc64-*-netbsd*)
machdep="mach_dep.lo sparc_mach_dep.lo"
;;
+ sparc*-*-openbsd*)
+ machdep="mach_dep.lo sparc_mach_dep.lo"
+ ;;
sparc-sun-solaris2.3)
machdep="mach_dep.lo sparc_mach_dep.lo"
- AC_DEFINE(SUNOS53_SHARED_LIB)
+ AC_DEFINE(SUNOS53_SHARED_LIB, 1,
+ [Define to work around a Solaris 5.3 bug (see dyn_load.c).])
;;
sparc*-sun-solaris2*)
machdep="mach_dep.lo sparc_mach_dep.lo"
dnl Include defines that have become de facto standard.
dnl ALL_INTERIOR_POINTERS can be overridden in startup code.
-AC_DEFINE(NO_EXECUTE_PERMISSION)
-AC_DEFINE(ALL_INTERIOR_POINTERS)
+AC_DEFINE([NO_EXECUTE_PERMISSION], [1],
+ [Define to allow the collector to disable execute permission of heap objects.])
+AC_DEFINE([ALL_INTERIOR_POINTERS], [1],
+ [Define to recognise all pointers to the interior of objects.])
dnl Interface Selection
AM_CONDITIONAL(ENABLE_GCJ_SUPPORT,
[test x"$enable_gcj_support" != xno])
if test x"$enable_gcj_support" != xno; then
- AC_DEFINE(GC_GCJ_SUPPORT, 1, [Define to include support for gcj])
+ AC_DEFINE(GC_GCJ_SUPPORT, 1, [Define to include support for gcj.])
fi
dnl Debugging
dnl ---------
+AH_TEMPLATE([GC_HAVE_BUILTIN_BACKTRACE],
+ [Define if backtrace information is supported.])
+AH_TEMPLATE([MAKE_BACK_GRAPH], [See doc/README.macros.])
+AH_TEMPLATE([SAVE_CALL_COUNT],
+ [The number of caller frames saved when allocating with the
+ debugging API.])
UNWINDLIBS=
AC_ARG_ENABLE(gc-debug,
[AC_HELP_STRING([--enable-gc-debug],
[include full support for pointer backtracing etc.])],
[ if test "$enable_gc_debug" = "yes"; then
AC_MSG_WARN("Should define GC_DEBUG and use debug alloc. in clients.")
- AC_DEFINE(KEEP_BACK_PTRS)
- AC_DEFINE(DBG_HDRS_ALL)
+ AC_DEFINE([KEEP_BACK_PTRS], 1,
+ [Define to save back-pointers in debugging headers.])
+ keep_back_ptrs=true
+ AC_DEFINE([DBG_HDRS_ALL], 1,
+ [Define to force debug headers on all objects.])
case $host in
ia64-*-linux* )
AC_DEFINE(MAKE_BACK_GRAPH)
;;
esac ]
fi)
+AM_CONDITIONAL([KEEP_BACK_PTRS], [test x"$keep_back_ptrs" = xtrue])
AC_ARG_ENABLE(java-finalization,
[AC_HELP_STRING([--disable-java-finalization],
[Disable support for java finalization.])])
if test x"$enable_java_finalization" != xno; then
- AC_DEFINE(JAVA_FINALIZATION)
+ AC_DEFINE([JAVA_FINALIZATION], 1, [See doc/README.macros.])
fi
AC_ARG_ENABLE(atomic-uncollectable,
if test "${enable_redirect_malloc}" = yes; then
if test "${enable_gc_debug}" = yes; then
- AC_DEFINE(REDIRECT_MALLOC, GC_debug_malloc_replacement)
- AC_DEFINE(REDIRECT_REALLOC, GC_debug_realloc_replacement)
- AC_DEFINE(REDIRECT_FREE, GC_debug_free)
+ AC_DEFINE([REDIRECT_MALLOC], GC_debug_malloc_replacement,
+ [If defined, redirect malloc to this function.])
+ AC_DEFINE([REDIRECT_REALLOC], GC_debug_realloc_replacement,
+ [If defined, redirect GC_realloc to this function.])
+ AC_DEFINE([REDIRECT_FREE], GC_debug_free,
+ [If defined, redirect free to this function.])
else
AC_DEFINE(REDIRECT_MALLOC, GC_malloc)
fi
- AC_DEFINE(GC_USE_DLOPEN_WRAP)
+ AC_DEFINE([GC_USE_DLOPEN_WRAP], 1, [See doc/README.macros.])
fi
AC_ARG_ENABLE(large-config,
[Optimize for large (> 100 MB) heap or root set])])
if test "${enable_large_config}" = yes; then
- AC_DEFINE(LARGE_CONFIG, 1, [Define to optimize for large heaps or root sets])
+ AC_DEFINE(LARGE_CONFIG, 1, [Define to optimize for large heaps or root sets.])
fi
dnl This is something of a hack. When cross-compiling we turn off
dnl some functionality. We also enable the "small" configuration.
dnl These is only correct when targetting an embedded system. FIXME.
if test -n "${with_cross_host}"; then
- AC_DEFINE(NO_CLOCK)
- AC_DEFINE(SMALL_CONFIG)
- AC_DEFINE(NO_DEBUGGING)
+ AC_DEFINE([NO_CLOCK], 1, [Define to not use system clock (cross compiling).])
+ AC_DEFINE([SMALL_CONFIG], 1,
+ [Define to tune the collector for small heap sizes.])
+ AC_DEFINE([NO_DEBUGGING], 1,
+ [Disable debugging, like GC_dump and its callees.])
fi
[AC_HELP_STRING([--enable-gc-assertions],
[collector-internal assertion checking])])
if test "${enable_gc_assertions}" = yes; then
- AC_DEFINE(GC_ASSERTIONS)
+ AC_DEFINE([GC_ASSERTIONS], 1, [Define to enable internal debug assertions.])
fi
AC_ARG_ENABLE(munmap,
esac]
)
if test "${enable_munmap}" != ""; then
- AC_DEFINE(USE_MMAP)
- AC_DEFINE(USE_MUNMAP)
+ AC_DEFINE([USE_MMAP], 1,
+ [Define to use mmap instead of sbrk to expand the heap.])
+ AC_DEFINE([USE_MUNMAP], 1,
+ [Define to return memory to OS with munmap calls
+ (see doc/README.macros).])
if test "${MUNMAP_THRESHOLD}" = "yes"; then
MUNMAP_THRESHOLD=6
fi
- AC_DEFINE_UNQUOTED(MUNMAP_THRESHOLD, ${MUNMAP_THRESHOLD})
+ AC_DEFINE_UNQUOTED([MUNMAP_THRESHOLD], [${MUNMAP_THRESHOLD}],
+ [Number of GC cycles to wait before unmapping an unused block.])
fi
AM_CONDITIONAL(USE_LIBDIR, test -z "$with_cross_host")
-dnl Atomic Ops
-dnl ----------
-
-atomic_ops_libs=-latomic_ops
-AC_CHECK_HEADER(atomic_ops.h,
- [ AC_MSG_NOTICE([Using pre-installed libatomic_ops]) ],
- [ ao_dir=
- for candidate in ${srcdir}/libatomic_ops*; do
- case $candidate in
- *.tar.gz)
- ;;
- *install)
- dnl generated by alternate Makefile.
- ;;
- *)
- if test -e "$candidate"; then
- ao_dir="$candidate"
- fi
- ;;
- esac
- done
- if test -z "$ao_dir"; then
- AC_MSG_ERROR([Missig libatomic_ops.])
- fi
- ao_version="${ao_dir#*libatomic_ops-}"
- AC_MSG_NOTICE([Using internal version of libatomic_ops])
-
- dnl Automake does not accept shell variables in AC_CONFIG_SUBDIRS
- test -e libatomic_ops \
- || ln -s ${ao_dir} libatomic_ops
- AC_CONFIG_SUBDIRS(libatomic_ops)
-
- dnl Also copy the source files to be linked in.
- test -e atomic_ops.c \
- || ln -s libatomic_ops/src/atomic_ops.c \
- atomic_ops.c
-
- test -e atomic_ops_sysdeps.S \
- || ln -s libatomic_ops/src/atomic_ops_sysdeps.S \
- atomic_ops_sysdeps.S
-
- dnl This gets the source include files, which is often close enough.
- dnl It also makes atomic_ops_sysdeps.S assemble.
- GC_CFLAGS="${GC_CFLAGS} -I libatomic_ops/src"
- maybe_libatomic_ops="libatomic_ops"
+# Atomic Ops
+# ----------
+
+# Do we want to use an external libatomic_ops? By default use it if it's
+# found.
+AC_ARG_WITH([libatomic-ops],
+ [AS_HELP_STRING([--with-libatomic-ops[=yes|no|check]],
+ [Use a pre-installed libatomic_ops? (default: check)])],
+ [], [with_libatomic_ops=check])
+
+# Check for an external libatomic_ops if the answer was yes or check. If not
+# found, fail on yes, and convert check to no.
+AS_IF([test x"$with_libatomic_ops" != xno],
+ [ AC_CHECK_HEADER([atomic_ops.h], [],
+ [ AS_IF([test x"$with_libatomic_ops" != xcheck],
+ [AC_MSG_ERROR([A pre-installed libatomic_ops was not found.])])
+ with_libatomic_ops=no ]) ])
+
+# Finally, emit the definitions for bundled or pre-installed AO.
+AC_MSG_CHECKING([which libatomic_ops to use])
+AS_IF([test x"$with_libatomic_ops" != xno],
+ [ AC_MSG_RESULT([pre-installed])
+ ATOMIC_OPS_LIBS="-latomic_ops"
+ AC_SUBST([ATOMIC_OPS_LIBS]) ],
+ [ AC_MSG_RESULT([bundled])
+ AC_CONFIG_SUBDIRS([libatomic_ops])
])
-
-AM_CONDITIONAL(USE_INTERNAL_LIBATOMIC_OPS,
- test -n "$maybe_libatomic_ops" -a "$THREADS" != "none")
-AM_CONDITIONAL(NEED_ATOMIC_OPS_ASM, test -n "$maybe_libatomic_ops" -a x$need_atomic_ops_asm = xtrue)
-AC_SUBST(atomic_ops_libs)
+AM_CONDITIONAL([USE_INTERNAL_LIBATOMIC_OPS],
+ [test x$with_libatomic_ops = xno -a x"$THREADS" != xnone])
+AM_CONDITIONAL([NEED_ATOMIC_OPS_ASM],
+ [test x$with_libatomic_ops = xno -a x$need_atomic_ops_asm = xtrue])
dnl Produce the Files
dnl -----------------
AC_CONFIG_FILES([Makefile bdw-gc.pc])
AC_CONFIG_COMMANDS([default],,
- [ srcdir=${srcdir}
+ [ srcdir="${srcdir}"
host=${host}
CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
CC="${CC}"
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