Commit 826c9ef6 authored Nov 03, 2017 by Daniel Verkamp

build: detect architecture via cc -dumpmachine



Similar to commit 98f84e62 ("build: detect OS via cc -dumpmachine"),
we can use the C compiler's -dumpmachine output to detect the target
CPU architecture rather than relying on the build machine's uname
output.  This helps enable correct CPU detection when $(CC) is a cross
compiler.

Change-Id: I72c34294a1ff7dd9df3aa45dfc319e5b81d51f85
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/385709


Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>

parent 1a2dc661

mk/spdk.common.mk

+2 −2

Original line number	Diff line number	Diff line
		@@ -57,11 +57,11 @@ ifneq ($(filter freebsd%,$(TARGET_TRIPLET_WORDS)),)
		OS = FreeBSD
		endif

		TARGET_MACHINE := $(firstword $(TARGET_TRIPLET_WORDS))

		COMMON_CFLAGS = -g $(C_OPT) -Wall -Wextra -Wno-unused-parameter -Wno-missing-field-initializers -Wmissing-declarations -fno-strict-aliasing -I$(SPDK_ROOT_DIR)/include

		UNAME_P := $(shell uname -p)
		ifneq ($(filter ppc%,$(UNAME_P)),)
		ifneq ($(filter powerpc%,$(TARGET_MACHINE)),)
		COMMON_CFLAGS += -mcpu=native
		else
		COMMON_CFLAGS += -march=native

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