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jmc |
1.1 |
dnl mips-abi.m4--Check for MIPS/IRIX ABI flags. Sets $abi and $abilibdirext |
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dnl to some value |
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dnl Derrick Brashear |
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dnl from KTH krb (from CMU) |
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dnl $Id: mips-abi.m4,v 1.4 2002/05/25 19:57:42 leg Exp $ |
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AC_DEFUN(AC_MIPS_ABI, [ |
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AC_ARG_WITH(mips_abi, |
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[ --with-mips-abi=abi ABI to use for IRIX (32, n32, or 64)]) |
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case "$host_os" in |
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irix*) |
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with_mips_abi="${with_mips_abi:-yes}" |
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if test -n "$GCC"; then |
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# GCC < 2.8 only supports the O32 ABI. GCC >= 2.8 has a flag to select |
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# which ABI to use, but only supports (as of 2.8.1) the N32 and 64 ABIs. |
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# |
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# Default to N32, but if GCC doesn't grok -mabi=n32, we assume an old |
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# GCC and revert back to O32. The same goes if O32 is asked for - old |
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# GCCs doesn't like the -mabi option, and new GCCs can't output O32. |
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# |
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# Don't you just love *all* the different SGI ABIs? |
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case "${with_mips_abi}" in |
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32|o32) abi='-mabi=32'; abilibdirext='' ;; |
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n32|yes) abi='-mabi=n32'; abilibdirext='32' ;; |
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64) abi='-mabi=64'; abilibdirext='64' ;; |
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no) abi=''; abilibdirext='';; |
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*) AC_ERROR("Invalid ABI specified") ;; |
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esac |
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if test -n "$abi" ; then |
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ac_foo=krb_cv_gcc_`echo $abi | tr =- __` |
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dnl |
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dnl can't use AC_CACHE_CHECK here, since it doesn't quote CACHE-ID to |
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dnl AC_MSG_RESULT |
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dnl |
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AC_MSG_CHECKING([if $CC supports the $abi option]) |
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AC_CACHE_VAL($ac_foo, [ |
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save_CFLAGS="$CFLAGS" |
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CFLAGS="$CFLAGS $abi" |
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AC_TRY_COMPILE(,int x;, eval $ac_foo=yes, eval $ac_foo=no) |
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CFLAGS="$save_CFLAGS" |
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]) |
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ac_res=`eval echo \\\$$ac_foo` |
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AC_MSG_RESULT($ac_res) |
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if test $ac_res = no; then |
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# Try to figure out why that failed... |
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case $abi in |
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-mabi=32) |
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save_CFLAGS="$CFLAGS" |
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CFLAGS="$CFLAGS -mabi=n32" |
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AC_TRY_COMPILE(,int x;, ac_res=yes, ac_res=no) |
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CLAGS="$save_CFLAGS" |
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if test $ac_res = yes; then |
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# New GCC |
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AC_ERROR([$CC does not support the $with_mips_abi ABI]) |
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fi |
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# Old GCC |
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abi='' |
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abilibdirext='' |
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;; |
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-mabi=n32|-mabi=64) |
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if test $with_mips_abi = yes; then |
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# Old GCC, default to O32 |
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abi='' |
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abilibdirext='' |
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else |
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# Some broken GCC |
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AC_ERROR([$CC does not support the $with_mips_abi ABI]) |
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fi |
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;; |
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esac |
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fi #if test $ac_res = no; then |
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fi #if test -n "$abi" ; then |
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else |
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case "${with_mips_abi}" in |
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32|o32) abi='-32'; abilibdirext='' ;; |
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n32|yes) abi='-n32'; abilibdirext='32' ;; |
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64) abi='-64'; abilibdirext='64' ;; |
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no) abi=''; abilibdirext='';; |
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*) AC_ERROR("Invalid ABI specified") ;; |
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esac |
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fi #if test -n "$GCC"; then |
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;; |
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esac |
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dnl And then we munge variables to make things work |
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CFLAGS="${CFLAGS} $abi" |
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libdir=`echo $libdir | sed 's,/*$,$abilibdirext,'` |
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LDFLAGS=`echo $LDFLAGS | sed -e "s,/lib$,/lib$abilibdirext," -e "s,\\\(/lib[^a-zA-Z]\\\),\\\1$abilibdirext,g"` |
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]) |
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