Disable GCC -Wformat-truncation when suported

[ngircd.git] / configure.ng

diff --git a/configure.ng b/configure.ng
index 195e4067beda5d12e6b0e58032c6848313ee548e..b2652c64aed63f61442a31a888f4f3e09483fd0a 100644 (file)
--- a/configure.ng
+++ b/configure.ng
@@ -125,6 +125,18 @@ main(int argc, char **argv)
        ])
 ])
 
+AC_DEFUN([GCC_W_NO_FORMAT_TRUNC],[
+       result=yes
+       AC_MSG_CHECKING([whether ${CC} accepts -Wno-format-truncation])
+       old_cflags="$CFLAGS"
+       CFLAGS="$CFLAGS -Wno-format-truncation"
+       AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],[],[result=no])
+       echo $result
+       if test "X$result" = "Xno"; then
+               CFLAGS="$old_cflags"
+       fi
+])
+
 # -- Hard coded system and compiler dependencies/features/options ... --
 
 if test "$GCC" = "yes"; then
@@ -132,6 +144,7 @@ if test "$GCC" = "yes"; then
        CFLAGS="$CFLAGS -pipe -W -Wall -Wpointer-arith -Wstrict-prototypes"
 
        GCC_STACK_PROTECT_CC
+       GCC_W_NO_FORMAT_TRUNC
 fi
 
 case "$host_os" in