On 2014年09月23日 00:01, Fathi Boudra wrote:
On 19 September 2014 12:21, Kai Kang <[email protected]> wrote:
Disable libunwind support of perl for aarch aarch64 that libunwind
doesn't support aarch64.
typo:
perl -> perf
aarch -> arch
Otherwise, the patch doesn't seems correct. libunwind supports aarch64
since libunwind 1.1 (you need to build with --enable-debug-frame).
When do configure, it fails with:
| checking for ELF helper width... configure: error: Unknown ELF target:
aarch64
It could be fixed by patching configure.ac:
--- configure.ac.orig 2014-09-23 13:30:23.415975656 +0800
+++ configure.ac 2014-09-23 13:30:47.991976326 +0800
@@ -137,7 +137,7 @@
AC_MSG_CHECKING([for ELF helper width])
case "${target_arch}" in
(arm|hppa|ppc32|x86|sh) use_elf32=yes; AC_MSG_RESULT([32]);;
-(ia64|ppc64|x86_64) use_elf64=yes; AC_MSG_RESULT([64]);;
+(aarch64|ia64|ppc64|x86_64) use_elf64=yes; AC_MSG_RESULT([64]);;
(mips) use_elfxx=yes; AC_MSG_RESULT([xx]);;
*) AC_MSG_ERROR([Unknown ELF target: ${target_arch}])
esac
And then it fails with do compile either:
| ../include/libunwind.h:25:3: error: #error "Unsupported arch"
In include/libunwind.h.in, it checks arch and include header accordingly.
For aarch64, it lacks arch check and header file libunwind-arm64.h or
libunwind-aarch64.h.
Thanks,
Kai
Signed-off-by: Kai Kang <[email protected]>
---
meta/recipes-kernel/perf/perf-features.inc | 1 +
1 file changed, 1 insertion(+)
diff --git a/meta/recipes-kernel/perf/perf-features.inc
b/meta/recipes-kernel/perf/perf-features.inc
index 2dbbb47..7de35f3 100644
--- a/meta/recipes-kernel/perf/perf-features.inc
+++ b/meta/recipes-kernel/perf/perf-features.inc
@@ -1,4 +1,5 @@
PERF_FEATURES_ENABLE ?= "perf-scripting perf-tui perf-libunwind"
+PERF_FEATURES_ENABLE_remove_aarch64 = "perf-libunwind"
def perf_feature_enabled(feature, trueval, falseval, d):
"""
--
1.9.1
--
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--
Regards,
Neil | Kai Kang
--
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