configure: make implicit declarations fatal

[ngircd-alex.git] / configure.in

diff --git a/configure.in b/configure.in
index 6d9312d4d7cac169b174f13863271b3812135e57..8526af60e93e782b70afb1195f7d317672017ff4 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -542,6 +542,7 @@ AC_DEFINE_UNQUOTED(TARGET_OS, "$target_os" )
 
 # Add additional CFLAGS, eventually specified on the command line, but after
 # running this configure script. Useful for "-Werror" for example.
+test "$GCC" = "yes" && CFLAGS="$CFLAGS -Werror=implicit-function-declaration"
 test -n "$CFLAGS_END" && CFLAGS="$CFLAGS $CFLAGS_END"
 
 # -- Generate files --