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) {}" > .$$$$.c
  24         $1 -nostdlib -Werror $2 .$$$$.c -o .$$$$.tmp 2>/dev/null >/dev/null
  25         ret=$?
  26         rm -f .$$$$.c .$$$$.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=$make
  33                 break
  34         fi
  35 done
  36
  37 GCCPREFIX=invalid
  38 XGCCPATH=${1:-"`pwd`/util/crossgcc/xgcc/bin/"}
  39 echo '# XGCCPATH='${XGCCPATH}
  40 TMPFILE=`mktemp /tmp/temp.XXXX 2>/dev/null || echo /tmp/temp.78gOIUGz`
  41 touch $TMPFILE
  42
  43 # This loops over all supported architectures in TARCH
  44 TARCH=('i386' 'x86_64')
  45 TWIDTH=32
  46 for search_for in "${TARCH[@]}"; do
  47         TARCH_SEARCH=("${TARCH_SEARCH[@]}" ${XGCCPATH}${search_for}-elf- ${search_for}-elf-)
  48 done
  49 echo '# TARCH_SEARCH='${TARCH_SEARCH[@]}
  50
  51 for gccprefixes in "${TARCH_SEARCH[@]}" ""; do
  52         if ! which ${gccprefixes}as 2>/dev/null >/dev/null; then
  53                 continue
  54         fi
  55         rm -f ${TMPFILE}.o
  56         if ${gccprefixes}as -o ${TMPFILE}.o ${TMPFILE}; then
  57                 TYPE=`${gccprefixes}objdump -p ${TMPFILE}.o`
  58                 if [ ${TYPE##* } == "elf${TWIDTH}-${TARCH}" ]; then
  59                         GCCPREFIX=$gccprefixes
  60                         ASFLAGS=
  61                         CFLAGS=
  62                         LDFLAGS=
  63                         break
  64                 fi
  65         fi
  66         if ${gccprefixes}as --32 -o ${TMPFILE}.o ${TMPFILE}; then
  67                 TYPE=`${gccprefixes}objdump -p ${TMPFILE}.o`
  68                 if [ ${TYPE##* } == "elf${TWIDTH}-${TARCH}" ]; then
  69                         GCCPREFIX=$gccprefixes
  70                         ASFLAGS=--32
  71                         CFLAGS="-m32 -Wl,-b,elf32-i386 -Wl,-melf_i386 "
  72                         LDFLAGS="-b elf32-i386 -melf_i386"
  73                         break
  74                 fi
  75         fi
  76 done
  77 rm -f $TMPFILE ${TMPFILE}.o
  78
  79 if [ "$GCCPREFIX" = "invalid" ]; then
  80         echo '$(error no suitable gcc found)'
  81         exit 1
  82 fi
  83
  84 CC="${GCCPREFIX}gcc"
  85 testcc "$CC" "$CFLAGS-Wa,--divide " && CFLAGS="$CFLAGS-Wa,--divide "
  86 testcc "$CC" "$CFLAGS-fno-stack-protector " && CFLAGS="$CFLAGS-fno-stack-protector "
  87 testcc "$CC" "$CFLAGS-Wl,--build-id=none " && CFLAGS="$CFLAGS-Wl,--build-id=none "
  88 # GCC 4.6 is much more picky about unused variables. Turn off it's warnings for
  89 # now:
  90 testcc "$CC" "$CFLAGS-Wno-unused-but-set-variable " && \
  91                CFLAGS="$CFLAGS-Wno-unused-but-set-variable "
  92
  93 if which gcc 2>/dev/null >/dev/null; then
  94         HOSTCC=gcc
  95 else
  96         HOSTCC=cc
  97 fi
  98
  99 if [ "`${XGCCPATH}/iasl 2>/dev/null | grep -c ACPI`" -gt 0 ]; then
 100         IASL=${XGCCPATH}iasl
 101 else
 102         IASL=iasl
 103 fi
 104
 105 cat << EOF
 106 # elf${TWIDTH}-${TARCH} toolchain
 107 AS:=${GCCPREFIX}as ${ASFLAGS}
 108 CC:=${GCCPREFIX}gcc ${CFLAGS}
 109 AR:=${GCCPREFIX}ar
 110 LD:=${GCCPREFIX}ld ${LDFLAGS}
 111 STRIP:=${GCCPREFIX}strip
 112 NM:=${GCCPREFIX}nm
 113 OBJCOPY:=${GCCPREFIX}objcopy
 114 OBJDUMP:=${GCCPREFIX}objdump
 115
 116 IASL:=${IASL}
 117
 118 # native toolchain
 119 HOSTCC:=${HOSTCC}
 120 EOF
 121