diff options
-rw-r--r-- | configure.ac | 2 | ||||
-rw-r--r-- | m4/add_cflags.m4 | 18 |
2 files changed, 20 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index b4594e2..c4b357e 100644 --- a/configure.ac +++ b/configure.ac @@ -304,6 +304,8 @@ case $SIZEOF32 in $ac_cv_sizeof_long) USIZE32="unsigned long";; esac +XIPH_ADD_CFLAGS([-Wall]) + AS_IF([test -z "$SIZE16"],[AC_MSG_ERROR([No 16 bit type found on this platform!])]) AS_IF([test -z "$SIZE32"],[AC_MSG_ERROR([No 32 bit type found on this platform!])]) AS_IF([test -z "$USIZE16"],[AC_MSG_ERROR([No unsigned 16 bit type found on this platform!])]) diff --git a/m4/add_cflags.m4 b/m4/add_cflags.m4 new file mode 100644 index 0000000..08f4a40 --- /dev/null +++ b/m4/add_cflags.m4 @@ -0,0 +1,18 @@ +dnl @synopsis XIPH_ADD_CFLAGS +dnl +dnl Add the given option to CFLAGS, if it doesn't break the compiler + +AC_DEFUN([XIPH_ADD_CFLAGS], +[AC_MSG_CHECKING([if $CC accepts $1]) + ac_add_cflags__old_cflags="$CFLAGS" + CFLAGS="$1" + AC_TRY_LINK([ + #include <stdio.h> + ], + [puts("Hello, World!"); return 0;], + AC_MSG_RESULT([yes]) + CFLAGS="$ac_add_cflags__old_cflags $1", + AC_MSG_RESULT([no]) + CFLAGS="$ac_add_cflags__old_cflags" + ) +])# XIPH_ADD_CFLAGS |