42 lines
1.4 KiB
Diff
42 lines
1.4 KiB
Diff
From 7fcf14b5dafa574cb9f565afebc8428c50f0be02 Mon Sep 17 00:00:00 2001
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From: Tom Rini <trini@konsulko.com>
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Date: Tue, 19 Jun 2018 23:53:54 -0400
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Subject: [PATCH] Makefile: Ensure we build with -std=gnu11
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As many targets are now commonly built with gcc-6 or later (which
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defaults to a newer C standard than older compilers), certain C
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constructs are now being used as they produce more readable code. And
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while all compilers that we support building with support the C11
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standard (and GNU11) they do not default to that standard. Ensure that
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we pass along -std=gnu11 when building.
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Signed-off-by: Tom Rini <trini@konsulko.com>
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---
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Makefile | 5 +++--
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1 file changed, 3 insertions(+), 2 deletions(-)
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diff --git a/Makefile b/Makefile
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index 484a1eb01d..752bff499e 100644
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--- a/Makefile
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+++ b/Makefile
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@@ -265,8 +265,9 @@ HOSTCXXFLAGS = -O2
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# Some Linux distributions (including RHEL7, SLES13, Debian 8) still
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# have older compilers as their default, so we make it explicit for
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# these that our host tools are GNU11 (i.e. C11 w/ GNU extensions).
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+CSTD_FLAG := -std=gnu11
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ifeq ($(HOSTOS),linux)
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-HOSTCFLAGS += --std=gnu11
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+HOSTCFLAGS += $(CSTD_FLAG)
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endif
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ifeq ($(HOSTOS),cygwin)
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@@ -368,7 +369,7 @@ KBUILD_CPPFLAGS := -D__KERNEL__ -D__UBOOT__
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KBUILD_CFLAGS := -Wall -Wstrict-prototypes \
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-Wno-format-security \
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- -fno-builtin -ffreestanding
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+ -fno-builtin -ffreestanding $(CSTD_FLAG)
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KBUILD_CFLAGS += -fshort-wchar
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KBUILD_AFLAGS := -D__ASSEMBLY__
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