diff options
Diffstat (limited to 'third_party/heimdal/cf/mips-abi.m4')
| -rw-r--r-- | third_party/heimdal/cf/mips-abi.m4 | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/third_party/heimdal/cf/mips-abi.m4 b/third_party/heimdal/cf/mips-abi.m4 new file mode 100644 index 0000000..20035be --- /dev/null +++ b/third_party/heimdal/cf/mips-abi.m4 @@ -0,0 +1,87 @@ +dnl $Id$ +dnl +dnl +dnl Check for MIPS/IRIX ABI flags. Sets $abi and $abilibdirext to some +dnl value. + +AC_DEFUN([AC_MIPS_ABI], [ +AC_ARG_WITH(mips_abi, + AS_HELP_STRING([--with-mips-abi=abi],[ABI to use for IRIX (32, n32, or 64)])) + +case "$host_os" in +irix*) +with_mips_abi="${with_mips_abi:-yes}" +if test -n "$GCC"; then + +# GCC < 2.8 only supports the O32 ABI. GCC >= 2.8 has a flag to select +# which ABI to use, but only supports (as of 2.8.1) the N32 and 64 ABIs. +# +# Default to N32, but if GCC doesn't grok -mabi=n32, we assume an old +# GCC and revert back to O32. The same goes if O32 is asked for - old +# GCCs doesn't like the -mabi option, and new GCCs can't output O32. +# +# Don't you just love *all* the different SGI ABIs? + +case "${with_mips_abi}" in + 32|o32) abi='-mabi=32'; abilibdirext='' ;; + n32|yes) abi='-mabi=n32'; abilibdirext='32' ;; + 64) abi='-mabi=64'; abilibdirext='64' ;; + no) abi=''; abilibdirext='';; + *) AC_MSG_ERROR("Invalid ABI specified") ;; +esac +if test -n "$abi" ; then +ac_foo=krb_cv_gcc_`echo $abi | tr =- __` +dnl +dnl can't use AC_CACHE_CHECK here, since it doesn't quote CACHE-ID to +dnl AC_MSG_RESULT +dnl +AC_MSG_CHECKING([if $CC supports the $abi option]) +AC_CACHE_VAL($ac_foo, [ +save_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS $abi" +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]],[[int x;]])],[eval $ac_foo=yes], [eval $ac_foo=no])dnl +CFLAGS="$save_CFLAGS" +]) +ac_res=`eval echo \\\$$ac_foo` +AC_MSG_RESULT($ac_res) +if test $ac_res = no; then +# Try to figure out why that failed... +case $abi in + -mabi=32) + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -mabi=n32" + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]],[[int x;]])],[ac_res=yes],[ac_res=no])dnl + CLAGS="$save_CFLAGS" + if test $ac_res = yes; then + # New GCC + AC_MSG_ERROR([$CC does not support the $with_mips_abi ABI]) + fi + # Old GCC + abi='' + abilibdirext='' + ;; + -mabi=n32|-mabi=64) + if test $with_mips_abi = yes; then + # Old GCC, default to O32 + abi='' + abilibdirext='' + else + # Some broken GCC + AC_MSG_ERROR([$CC does not support the $with_mips_abi ABI]) + fi + ;; +esac +fi #if test $ac_res = no; then +fi #if test -n "$abi" ; then +else +case "${with_mips_abi}" in + 32|o32) abi='-32'; abilibdirext='' ;; + n32|yes) abi='-n32'; abilibdirext='32' ;; + 64) abi='-64'; abilibdirext='64' ;; + no) abi=''; abilibdirext='';; + *) AC_MSG_ERROR("Invalid ABI specified") ;; +esac +fi #if test -n "$GCC"; then +;; +esac +]) |