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| author | Diego E. 'Flameeyes' Pettenò <flameeyes@gmail.com> | 2008-11-19 02:23:34 +0100 |
|---|---|---|
| committer | Diego E. 'Flameeyes' Pettenò <flameeyes@gmail.com> | 2008-11-19 02:23:34 +0100 |
| commit | cfc746a5360d4ea95f9c65f150244f2f62c15c9c (patch) | |
| tree | b87c6bbe15e621e6686196ac2efa56c9aa335f57 | |
| parent | 80738bd4f54bd6c73a68789303e8c34fa47d7dfa (diff) | |
| download | xine-lib-cfc746a5360d4ea95f9c65f150244f2f62c15c9c.tar.gz xine-lib-cfc746a5360d4ea95f9c65f150244f2f62c15c9c.tar.bz2 | |
Update the attributes.m4 file from lscube projects.
This adds variants of CC_CHECK_CFLAGS that append the flags
automatically, and a few comments.
| -rw-r--r-- | m4/attributes.m4 | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/m4/attributes.m4 b/m4/attributes.m4 index 9c4a0c89a..45ea789ad 100644 --- a/m4/attributes.m4 +++ b/m4/attributes.m4 @@ -32,6 +32,9 @@ dnl distribute a modified version of the Autoconf Macro, you may extend dnl this special exception to the GPL to apply to your modified version as dnl well. +dnl Check if the flag is supported by compiler +dnl CC_CHECK_CFLAGS_SILENT([FLAG], [ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND]) + AC_DEFUN([CC_CHECK_CFLAGS_SILENT], [ AC_CACHE_VAL(AS_TR_SH([cc_cv_cflags_$1]), [ac_save_CFLAGS="$CFLAGS" @@ -46,6 +49,9 @@ AC_DEFUN([CC_CHECK_CFLAGS_SILENT], [ [$2], [$3]) ]) +dnl Check if the flag is supported by compiler (cacheable) +dnl CC_CHECK_CFLAGS([FLAG], [ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND]) + AC_DEFUN([CC_CHECK_CFLAGS], [ AC_CACHE_CHECK([if $CC supports $1 flag], AS_TR_SH([cc_cv_cflags_$1]), @@ -56,6 +62,28 @@ AC_DEFUN([CC_CHECK_CFLAGS], [ [$2], [$3]) ]) +dnl CC_CHECK_CFLAG_APPEND(FLAG, [action-if-found], [action-if-not-found]) +dnl Check for CFLAG and appends them to CFLAGS if supported +AC_DEFUN([CC_CHECK_CFLAG_APPEND], [ + AC_CACHE_CHECK([if $CC supports $1 flag], + AS_TR_SH([cc_cv_cflags_$1]), + CC_CHECK_CFLAGS_SILENT([$1]) dnl Don't execute actions here! + ) + + AS_IF([eval test x$]AS_TR_SH([cc_cv_cflags_$1])[ = xyes], + [CFLAGS="$CFLAGS $1"; $2], [$3]) +]) + +dnl CC_CHECK_CFLAGS_APPEND([FLAG1 FLAG2], [action-if-found], [action-if-not]) +AC_DEFUN([CC_CHECK_CFLAGS_APPEND], [ + for flag in $1; do + CC_CHECK_CFLAG_APPEND($flag, [$2], [$3]) + done +]) + +dnl Check if the flag is supported by linker (cacheable) +dnl CC_CHECK_LDFLAGS([FLAG], [ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND]) + AC_DEFUN([CC_CHECK_LDFLAGS], [ AC_CACHE_CHECK([if $CC supports $1 flag], AS_TR_SH([cc_cv_ldflags_$1]), |