util/xcompile/xcompile

   1 #!/bin/sh
   2 #
   3 # This file is part of the coreboot project.
   4 #
   5 # Copyright (C) 2007-2010 coresystems GmbH
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; version 2 of the License.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19 #
  20
  21 testcc()
  22 {
  23         echo "_start(void) {}" > .$$$$.c
  24         $1 -nostdlib $2 .$$$$.c -o .$$$$.tmp 2>/dev/null >/dev/null
  25         ret=$?
  26         rm -f .$$$$.c .$$$$.tmp
  27         return $ret
  28 }
  29
  30 for make in make gmake gnumake; do
  31         if [ "`$make --version 2>/dev/null | grep -c GNU`" -gt 0 ]; then
  32                 MAKE=$make
  33                 break
  34         fi
  35 done
  36
  37 GCCPREFIX=invalid
  38 XGCCPATH="`pwd`/util/crossgcc/xgcc/bin/"
  39 TMPFILE=`mktemp /tmp/temp.XXXX 2>/dev/null || echo /tmp/temp.78gOIUGz`
  40 touch $TMPFILE
  41
  42 # This should be a loop over all supported architectures
  43 TARCH=i386
  44 TWIDTH=32
  45 for gccprefixes in ${XGCCPATH}${TARCH}-elf- ${TARCH}-elf- ""; do
  46         if ! which ${gccprefixes}as 2>/dev/null >/dev/null; then
  47                 continue
  48         fi
  49         rm -f ${TMPFILE}.o
  50         if ${gccprefixes}as -o ${TMPFILE}.o ${TMPFILE}; then
  51                 TYPE=`${gccprefixes}objdump -p ${TMPFILE}.o`
  52                 if [ ${TYPE##* } == "elf${TWIDTH}-${TARCH}" ]; then
  53                         GCCPREFIX=$gccprefixes
  54                         ASFLAGS=
  55                         CFLAGS=
  56                         LDFLAGS=
  57                         break
  58                 fi
  59         fi
  60         if ${gccprefixes}as --32 -o ${TMPFILE}.o ${TMPFILE}; then
  61                 TYPE=`${gccprefixes}objdump -p ${TMPFILE}.o`
  62                 if [ ${TYPE##* } == "elf${TWIDTH}-${TARCH}" ]; then
  63                         GCCPREFIX=$gccprefixes
  64                         ASFLAGS=--32
  65                         CFLAGS="-m32 "
  66                         LDFLAGS="-b elf32-i386"
  67                         break
  68                 fi
  69         fi
  70 done
  71 rm -f $TMPFILE ${TMPFILE}.o
  72
  73 if [ "$GCCPREFIX" = "invalid" ]; then
  74         echo '$(error no suitable gcc found)'
  75         exit 1
  76 fi
  77
  78 CC="${GCCPREFIX}gcc"
  79 testcc "$CC" "$CFLAGS-Wa,--divide " && CFLAGS="$CFLAGS-Wa,--divide "
  80 testcc "$CC" "$CFLAGS-fno-stack-protector " && CFLAGS="$CFLAGS-fno-stack-protector "
  81 testcc "$CC" "$CFLAGS-Wl,--build-id=none " && CFLAGS="$CFLAGS-Wl,--build-id=none "
  82 # GCC 4.6 is much more picky about unused variables. Turn off it's warnings for
  83 # now:
  84 testcc "$CC" "$CFLAGS-Wno-unused-but-set-variable " && \
  85                CFLAGS="$CFLAGS-Wno-unused-but-set-variable "
  86
  87 if which gcc 2>/dev/null >/dev/null; then
  88         HOSTCC=gcc
  89 else
  90         HOSTCC=cc
  91 fi
  92
  93 if [ "`${XGCCPATH}/iasl 2>/dev/null | grep -c ACPI`" -gt 0 ]; then
  94         IASL=${XGCCPATH}iasl
  95 else
  96         IASL=iasl
  97 fi
  98
  99 cat << EOF
 100 # elf${TWIDTH}-${TARCH} toolchain
 101 AS:=${GCCPREFIX}as ${ASFLAGS}
 102 CC:=${GCCPREFIX}gcc ${CFLAGS}
 103 AR:=${GCCPREFIX}ar
 104 LD:=${GCCPREFIX}ld ${LDFLAGS}
 105 STRIP:=${GCCPREFIX}strip
 106 NM:=${GCCPREFIX}nm
 107 OBJCOPY:=${GCCPREFIX}objcopy
 108 OBJDUMP:=${GCCPREFIX}objdump
 109
 110 IASL:=${IASL}
 111
 112 # native toolchain
 113 HOSTCC:=${HOSTCC}
 114 EOF
 115