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| author | Romain Naour <romain.naour@gmail.com> | 2017-04-17 19:37:22 +0200 |
|---|---|---|
| committer | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2017-05-04 23:23:17 +0200 |
| commit | 60aee0cc5afb85976ca3b346f82b2caadc3a1c21 (patch) | |
| tree | 145157f1c06f6c4c418801276e8b01fd12f84a98 /package/libunwind | |
| parent | e8c044e1bd788d18410b981ff08635c4b2b9de4e (diff) | |
| download | buildroot-60aee0cc5afb85976ca3b346f82b2caadc3a1c21.tar.gz buildroot-60aee0cc5afb85976ca3b346f82b2caadc3a1c21.zip | |
package/libunwind: disable for x86 with musl
libunwind use sigreturn() and setcontext() while building for x86 [1]
but this function is not available with musl [2].
This throw a warning during libunwind build:
In file included from x86/Los-linux.c:4:0:
x86/Gos-linux.c: In function ‘_ULx86_local_resume’:
x86/Gos-linux.c:298:7: warning: implicit declaration of function ‘sigreturn’ [-Wimplicit-function-declaration]
sigreturn (sc);
^
But any program trying to link against libunwind-generic.so or
libunwind.so fail to build:
[...]/usr/lib/libunwind-generic.so: undefined reference to `sigreturn'
[...]/usr/lib/libunwind-generic.so: undefined reference to `setcontext'
collect2: error: ld returned 1 exit status
Disable libunwind for x86 target when musl is used.
Reported upstream by Waldemar [3]
[1] http://git.savannah.gnu.org/gitweb/?p=libunwind.git;a=blob;f=src/x86/Gos-linux.c;h=17aebc2974af50eb0bf8292689b2ed22a4c97866;hb=HEAD#l299
[2] http://openwall.com/lists/musl/2016/02/04/3
[3] http://lists.nongnu.org/archive/html/libunwind-devel/2017-04/msg00030.html
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Waldemar Brodkorb <wbx@openadk.org>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Diffstat (limited to 'package/libunwind')
| -rw-r--r-- | package/libunwind/Config.in | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/package/libunwind/Config.in b/package/libunwind/Config.in index 2003e96518..1a2531716f 100644 --- a/package/libunwind/Config.in +++ b/package/libunwind/Config.in @@ -16,7 +16,7 @@ config BR2_PACKAGE_LIBUNWIND_ARCH_SUPPORTS (BR2_ARM_CPU_HAS_ARM || BR2_mips || BR2_mipsel || \ BR2_mips64 || BR2_mips64el || BR2_x86_64) default y if BR2_TOOLCHAIN_USES_MUSL && \ - (BR2_ARM_CPU_HAS_ARM || BR2_i386 || BR2_x86_64) + (BR2_ARM_CPU_HAS_ARM || BR2_x86_64) config BR2_PACKAGE_LIBUNWIND bool "libunwind" |
