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