From: Romain Naour Date: Mon, 17 Apr 2017 17:37:22 +0000 (+0200) Subject: package/libunwind: disable for x86 with musl X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=60aee0cc5afb85976ca3b346f82b2caadc3a1c21;p=buildroot.git 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 Cc: "Yann E. MORIN" Cc: Waldemar Brodkorb Reviewed-by: "Yann E. MORIN" Signed-off-by: Thomas Petazzoni --- 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"