When build with ARCH=x86_64, perf failed to compile with following error: tests/builtin-test.o:(.data+0x158): undefined reference to `test__perf_time_to_tsc' collect2: error: ld returned 1 exit status Makefile.perf:632: recipe for target 'perf' failed ...
Which is caused commit c6e5e9fbc3ea1 ("perf tools: Fix building error in x86_64 when dwarf unwind is on"), ARCH test in Makefile.perf conflicts with tests/builtin-test.c's __x86_64__. To x86/x86_64 platform, ARCH should always override to x86 while IS_64_BIT stands for the actual architecture. Signed-off-by: He Kuang <heku...@huawei.com> --- tools/perf/config/Makefile.arch | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/perf/config/Makefile.arch b/tools/perf/config/Makefile.arch index ff95a68..836ba44 100644 --- a/tools/perf/config/Makefile.arch +++ b/tools/perf/config/Makefile.arch @@ -29,3 +29,7 @@ ifeq ($(LP64), 1) else IS_64_BIT := 0 endif + +ifeq ($(ARCH), x86_64) + override ARCH := x86 +endif -- 2.2.0.33.gc18b867 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/