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Documentation/vDSO: don't build tests when cross compiling 

The following was seen in linux-next build coverage, which is somewhat
unique since it uses powerpc host to cross compile x86:

Documentation/vDSO/vdso_standalone_test_x86.c:49:2: error: impossible
register constraint in 'asm'
make[4]: *** [Documentation/vDSO/vdso_standalone_test_x86.o] Error 1

It probably makes sense to just skip building these tests when
we are cross compiling.

Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Paul Gortmaker 2015-06-20 21:10:28 -04:00 committed by Jonathan Corbet
parent e368c7291f
commit 6a407a81a9
1 changed files with 2 additions and 0 deletions
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2
Documentation/vDSO/Makefile
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@ -1,3 +1,4 @@
ifndef CROSS_COMPILE
# vdso_test won't build for glibc < 2.16, so disable it
# hostprogs-y := vdso_test
hostprogs-$(CONFIG_X86) := vdso_standalone_test_x86
@ -13,3 +14,4 @@ HOSTLOADLIBES_vdso_standalone_test_x86 := -nostdlib
ifeq ($(CONFIG_X86_32),y)
HOSTLOADLIBES_vdso_standalone_test_x86 += -lgcc_s
endif
endif