(svn r20723) -Fix: don't define _FORTIFY_SOURCE when not compiling with GCC, other compilers would likely barf on GLIBC code

config.lib

@@ -1262,7 +1262,13 @@ make_cflags_and_ldflags() {
 
 		# Each debug level reduces the optimization by a bit
 		if [ $enable_debug -ge 1 ]; then
-			CFLAGS="$CFLAGS -g -D_DEBUG -D_FORTIFY_SOURCE=2"
+			CFLAGS="$CFLAGS -g -D_DEBUG"
+			if basename "$cc_host" | grep "gcc" &>/dev/null; then
+				# Define only when compiling with GCC, some
+				# GLIBC versions use GNU extensions in a way
+				# that breaks build with at least ICC
+				CFLAGS="$CFLAGS -D_FORTIFY_SOURCE=2"
+			fi
 			if [ "$os" = "PSP" ]; then
 				CFLAGS="$CFLAGS -G0"
 			fi