configure: Per module Werror flags.

[vlc] / configure.ac

diff --git a/configure.ac b/configure.ac
index 4a88e5b25dc1d7191df1ca3404fedde486a85d80..7bb2b5dafe17f2628899d38a9e0d9de983fc8442 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1004,15 +1004,16 @@ fi
 CFLAGS="${CFLAGS_save}"
 
 RDC_PROG_CC_WFLAGS([all extra sign-compare undef pointer-arith bad-function-cast cast-align write-strings missing-prototypes volatile-register-var error-implicit-function-declaration])
-RDC_PROG_CC_FLAGS_IFELSE([-pipe])
+RDC_PROG_CC_FLAGS([-pipe])
 
 AC_ARG_ENABLE(warnings-as-error,
-      AS_HELP_STRING([--enable-warnings-as-error],[Treat acceptable warnings as error (default disabled, enabled in debug)]))
-if test "x${warnings_as_error}" = "xyes" -o "x${enable_debug}" != "xno"
-then
+      AS_HELP_STRING([--enable-warnings-as-error],[Treat acceptable warnings as error (default in debug)]),, [enable_warnings_as_error="$enable_debug"])
+AS_IF([test "${enable_warnings_as_error}" = "yes"], [
     RDC_PROG_CC_WERRORFLAGS([unused-function unused-label unused-value unused-parameter unused-variable unused \
-    missing-parameter-type missing-declarations undef address enum-compare implicit-int implicit-function-declaration comment format main missing-braces nonnull parentheses pointer-sign reorder return-type sequence-point switch trigraphs uninitialized])
-fi
+     missing-braces nonnull parentheses uninitialized address enum-compare undef comment switch \
+     bad-function-cast ignored])
+])
+AC_SUBST(CFLAGS_WERROR)
 
 dnl Check for various optimization flags
 AC_CACHE_CHECK([if \$CC accepts -Os],
@@ -1446,7 +1447,7 @@ AS_IF([test "${enable_sse}" != "no"], [
 AC_CACHE_CHECK([if $CC groks 3D Now! inline assembly],
     [ac_cv_3dnow_inline],
     [CFLAGS="${CFLAGS_save}"
-     AC_TRY_COMPILE(,[void *p;asm volatile("pfadd %%mm1,%%mm2"::"r"(p));],
+     AC_TRY_COMPILE(,[void *p = NULL; asm volatile("pfadd %%mm1,%%mm2"::"r"(p));],
                     ac_cv_3dnow_inline=yes, ac_cv_3dnow_inline=no)])
 AS_IF([test "${ac_cv_3dnow_inline}" != "no"], [
   AC_DEFINE(CAN_COMPILE_3DNOW, 1,