| From aaabed350ec51f7bb9a07290ffb3ce6e794c8f22 Mon Sep 17 00:00:00 2001 |
| From: Thomas Petazzoni <thomas.petazzoni@bootlin.com> |
| Date: Tue, 19 Mar 2019 23:01:50 +0100 |
| Subject: [PATCH] tools/Makefile: build host tools with -std=gnu99 |
| |
| Parts of the code are using C99 constructs (such as variables declared |
| inside loops), but also GNU extensions (such as typeof), so using |
| -std=gnu99 is necessary to build with older versions of gcc that don't |
| default to building with gnu99. |
| |
| It fixes the following build failure: |
| |
| ./tools/../lib/crc16.c: In function "crc16_ccitt": |
| ./tools/../lib/crc16.c:70:2: error: "for" loop initial declarations are only allowed in C99 mode |
| for (int i = 0; i < len; i++) |
| ^ |
| ./tools/../lib/crc16.c:70:2: note: use option -std=c99 or -std=gnu99 to compile your code |
| |
| when building the host tools with gcc 4.7. |
| |
| Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> |
| --- |
| tools/Makefile | 3 ++- |
| 1 file changed, 2 insertions(+), 1 deletion(-) |
| |
| diff --git a/tools/Makefile b/tools/Makefile |
| index 081383d7a7..d377d85f74 100644 |
| --- a/tools/Makefile |
| +++ b/tools/Makefile |
| @@ -254,7 +254,8 @@ HOST_EXTRACFLAGS += -include $(srctree)/include/compiler.h \ |
| -I$(srctree)/tools \ |
| -DUSE_HOSTCC \ |
| -D__KERNEL_STRICT_NAMES \ |
| - -D_GNU_SOURCE |
| + -D_GNU_SOURCE \ |
| + -std=gnu99 |
| |
| __build: $(LOGO-y) |
| |
| -- |
| 2.20.1 |
| |
