Messages in this thread Patch in this message | | | From | Andi Kleen <> | Subject | [PATCH 02/19] lto: Disable LTO for hweight functions | Date | Fri, 14 Feb 2014 22:21:26 +0100 |
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From: Andi Kleen <ak@linux.intel.com>
x86 calls the hweight library functions with special calling conventions. LTO doesn't support compiling individual files with special options. Just disable LTO for the file.
Signed-off-by: Andi Kleen <ak@linux.intel.com> --- lib/Makefile | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/lib/Makefile b/lib/Makefile index 48140e3..2057304 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -46,7 +46,9 @@ obj-$(CONFIG_CHECK_SIGNATURE) += check_signature.o obj-$(CONFIG_DEBUG_LOCKING_API_SELFTESTS) += locking-selftest.o GCOV_PROFILE_hweight.o := n -CFLAGS_hweight.o = $(subst $(quote),,$(CONFIG_ARCH_HWEIGHT_CFLAGS)) +CFLAGS_hweight.o = $(subst $(quote),,$(CONFIG_ARCH_HWEIGHT_CFLAGS)) \ + $(DISABLE_LTO) + obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o obj-$(CONFIG_BTREE) += btree.o -- 1.8.5.2
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