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 TMPFILE=`mktemp /tmp/temp.XXXX 2>/dev/null || echo /tmp/temp.78gOIUGz`
  39 touch $TMPFILE
  40
  41 # This should be a loop over all supported architectures
  42 TARCH=i386
  43 TWIDTH=32
  44 for gccprefixes in `pwd`/util/crossgcc/xgcc/bin/${TARCH}-elf- ${TARCH}-elf- ""; do
  45         if ! which ${gccprefixes}as 2>/dev/null >/dev/null; then
  46                 continue
  47         fi
  48         rm -f ${TMPFILE}.o
  49         if ${gccprefixes}as -o ${TMPFILE}.o ${TMPFILE}; then
  50                 TYPE=`${gccprefixes}objdump -p ${TMPFILE}.o`
  51                 if [ ${TYPE##* } == "elf${TWIDTH}-${TARCH}" ]; then
  52                         GCCPREFIX=$gccprefixes
  53                         ASFLAGS=
  54                         CFLAGS=
  55                         LDFLAGS=
  56                         break
  57                 fi
  58         fi
  59         if ${gccprefixes}as --32 -o ${TMPFILE}.o ${TMPFILE}; then
  60                 TYPE=`${gccprefixes}objdump -p ${TMPFILE}.o`
  61                 if [ ${TYPE##* } == "elf${TWIDTH}-${TARCH}" ]; then
  62                         GCCPREFIX=$gccprefixes
  63                         ASFLAGS=--32
  64                         CFLAGS="-m32 "
  65                         LDFLAGS="-b elf32-i386"
  66                         break
  67                 fi
  68         fi
  69 done
  70 rm -f $TMPFILE ${TMPFILE}.o
  71
  72 if [ "$GCCPREFIX" = "invalid" ]; then
  73         echo '$(error no suitable gcc found)'
  74         exit 1
  75 fi
  76
  77 CC="${GCCPREFIX}gcc"
  78 testcc "$CC" "$CFLAGS-Wa,--divide " && CFLAGS="$CFLAGS-Wa,--divide "
  79 testcc "$CC" "$CFLAGS-fno-stack-protector " && CFLAGS="$CFLAGS-fno-stack-protector "
  80 testcc "$CC" "$CFLAGS-Wl,--build-id=none " && CFLAGS="$CFLAGS-Wl,--build-id=none "
  81
  82 if which gcc 2>/dev/null >/dev/null; then
  83         HOSTCC=gcc
  84 else
  85         HOSTCC=cc
  86 fi
  87
  88 cat << EOF
  89 # elf${TWIDTH}-${TARCH} toolchain
  90 AS:=${GCCPREFIX}as ${ASFLAGS}
  91 CC:=${GCCPREFIX}gcc ${CFLAGS}
  92 AR:=${GCCPREFIX}ar
  93 LD:=${GCCPREFIX}ld ${LDFLAGS}
  94 STRIP:=${GCCPREFIX}strip
  95 NM:=${GCCPREFIX}nm
  96 OBJCOPY:=${GCCPREFIX}objcopy
  97 OBJDUMP:=${GCCPREFIX}objdump
  98
  99 # native toolchain
 100 HOSTCC:=${HOSTCC}
 101 EOF
 102