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| author | Erik de Castro Lopo <erikd@mega-nerd.com> | 2015-07-20 13:29:42 +0300 |
|---|---|---|
| committer | Tristan Matthews <tmatth@videolan.org> | 2015-07-22 07:51:00 +0300 |
| commit | d9cd05188a20515f02087ef95d7c2a06dc41d4e2 (patch) | |
| tree | e89975baf541ae29149f362aa07f93a59866399b | |
| parent | ecc63b360cbf6675d905ae278776c628fdfda00a (diff) | |
Add -Wall to CFLAGS if compiler supports it
| -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 |