On 23 September 2014 09:11, Kang Kai <[email protected]> wrote: > 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.
right, we've upstreamed aarch64 support but it hasn't been released in 1.1. we need the following patches: http://git.savannah.gnu.org/gitweb/?p=libunwind.git;a=commitdiff;h=ac6c0a6535975f1dc2da6e4e2766614baac2a14a http://git.savannah.gnu.org/gitweb/?p=libunwind.git;a=commitdiff;h=2cb00c1eaca437e41556ad5512149508fcc7cb82 > 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 >>> >>> -- >>> _______________________________________________ >>> Openembedded-core mailing list >>> [email protected] >>> http://lists.openembedded.org/mailman/listinfo/openembedded-core >> >> > > > -- > Regards, > Neil | Kai Kang -- _______________________________________________ Openembedded-core mailing list [email protected] http://lists.openembedded.org/mailman/listinfo/openembedded-core
