util/xcompile/xcompile

   1
   2 for make in make gmake gnumake; do
   3         if [ "`$make --version 2>/dev/null | grep -c GNU`" -gt 0 ]; then
   4                 MAKE=$make
   5                 break
   6         fi
   7 done
   8
   9 GCCPREFIX=invalid
  10 TMP=`mktemp /tmp/temp.XXXX`
  11 echo "mov %eax, %eax" > ${TMP}.s
  12 printf "\x7fELF" > ${TMP}.compare
  13 for gccprefixes in `pwd`/../crossgcc/xgcc/bin/i386-elf- i386-elf- ""; do
  14         if which ${gccprefixes}as 2>/dev/null >/dev/null; then
  15                 printf ""
  16         else
  17                 continue
  18         fi
  19         rm -f ${TMP}.o
  20         if ${gccprefixes}as --32 -o ${TMP}.o ${TMP}.s; then
  21                 dd bs=4 count=1 if=${TMP}.o > ${TMP}.test 2>/dev/null
  22                 if cmp ${TMP}.test ${TMP}.compare; then
  23                         GCCPREFIX=$gccprefixes
  24                         break
  25                 fi
  26         fi
  27 done
  28 rm -f $TMP ${TMP}.s ${TMP}.o ${TMP}.compare ${TMP}.test
  29
  30 if [ "$GCCPREFIX" = "invalid" ]; then
  31         echo '$(error no suitable gcc found)'
  32         exit 1
  33 fi
  34
  35 cat << afteroptions
  36 AS:=${GCCPREFIX}as --32
  37 CC:=${GCCPREFIX}gcc -m32
  38 AR:=${GCCPREFIX}ar
  39 LD:=${GCCPREFIX}ld -b elf32-i386
  40 STRIP:=${GCCPREFIX}strip
  41 NM:=${GCCPREFIX}nm
  42 OBJCOPY:=${GCCPREFIX}objcopy
  43 OBJDUMP:=${GCCPREFIX}objdump
  44 HOSTCC:=gcc
  45 afteroptions