From cd30857cebbb36a9a8c458de419610a46c3f3ca9 Mon Sep 17 00:00:00 2001 From: Qu Wenruo Date: Tue, 15 Aug 2017 09:17:12 +0900 Subject: [PATCH] btrfs-progs: Specify C standard to gnu90 explicitly Different C compilers have different default language standard. This sometimes causes problem on different system. For distribution like CentOS/RHEL7, its gcc is still 4.8 and will report error for c90 style declaration, while most developers are using newer gcc which will just ignore it. This makes us hard to detect such language standard problem. This patch will specify standard to gnu90 explicitly to avoid such problem. Gnu90 is a good mix of c90 while provide a lot of useful gnu extension, and is supported by all modern gcc and clang. Reported-by: Marco Lorenzo Crociani Signed-off-by: Qu Wenruo Signed-off-by: David Sterba --- Makefile | 1 + 1 file changed, 1 insertion(+) diff --git a/Makefile b/Makefile index 0cee85f..7d35245 100644 --- a/Makefile +++ b/Makefile @@ -59,6 +59,7 @@ TOPDIR := $(shell pwd) # Common build flags CFLAGS = $(SUBST_CFLAGS) \ + -std=gnu90 \ -include config.h \ -DBTRFS_FLAT_INCLUDES \ -D_XOPEN_SOURCE=700 \ -- 2.7.4