buildroot/package/libunwind, branch 2017.08

libunwind: needs dynamic library support

2017-08-21T21:30:04+00:00

libunwind configure script explicitly links libunwind against libgcc_s. libgcc_s is only guaranteed to be available for toolchains that supports dynamic linking: pure static linking toolchains only have libgcc.a, not libgcc_s.so. Therefore, let's make libunwind unavailable on toolchains that lack dynamic linking support. We could potentially support linking with libgcc, but switching to libgcc_s was done upstream because libgcc was lacking some symbols on ARM (https://lists.nongnu.org/archive/html/libunwind-devel/2014-06/msg00024.html). Even though recent gcc versions seem to provide such symbols in libgcc.a, having libunwind available on static linking configurations is not a useful enough use-case to do the necessary research to find when this issue was fixed in gcc. Since libunwind is not used as a mandatory dependency in any package, adding this !BR2_STATIC_LIBS dependency is trivial and nicely avoids the problematic situation. This fixes two different autobuilder failures: - Gstreamer 1.x programs failing to link, because libunwind links against libgcc_s that isn't available (static linking configuration): http://autobuild.buildroot.net/results/9d4fbf7167e9afce0eef5c9e0cfd42c966ecba36/ - Gmrender-resurrect, which fails to link, because GStreamer 1.x uses some libunwind functionality, but does not take into account the libunwind dependency in its .pc files (static linking configuration): http://autobuild.buildroot.net/results/0a3a2485c187a000482c178f1e9c64dd716a858f/ Signed-off-by: Thomas Petazzoni

package/libunwind: fix build failure due to asm()

2017-07-03T22:59:26+00:00

The gcc documentation [1] suggest to use __asm__ instead of asm. Fixes: http://autobuild.buildroot.net/results/3ef/3efe156b6494e4392b6c31de447ee2c72acc1a53 [1] https://gcc.gnu.org/onlinedocs/gcc/Alternate-Keywords.html#Alternate-Keywords Signed-off-by: Romain Naour Cc: Bernd Kuhls Tested-by: Bernd Kuhls Signed-off-by: Thomas Petazzoni

package/libunwind: bump version to 1.2.1

2017-06-18T14:39:58+00:00

Backported patch from master branch which implements --disable-tests configure option, removed original patch 0001, added _CONF_OPTS. Removed patch 0003, applied upstream: https://github.com/libunwind/libunwind/commit/f1684379dfaf8018d5d4c1945e292a56d0fab245 Added upstream patch to fix musl build. Tested using this defconfig BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_EUDEV=y BR2_PACKAGE_LTRACE=y BR2_PACKAGE_MESA3D=y BR2_PACKAGE_MESA3D_DRI_DRIVER_SWRAST=y BR2_PACKAGE_MESA3D_OPENGL_EGL=y BR2_PACKAGE_WESTON=y BR2_PACKAGE_XORG7=y BR2_PACKAGE_XSERVER_XORG_SERVER=y BR2_PACKAGE_LIBJPEG=y BR2_PACKAGE_LIBUNWIND=y with test-pkg armv5-ctng-linux-gnueabi [ 1/49]: OK armv7-ctng-linux-gnueabihf [ 2/49]: OK br-aarch64-glibc [ 3/49]: SKIPPED br-arcle-hs38 [ 4/49]: SKIPPED br-arm-basic [ 5/49]: SKIPPED br-arm-cortex-a9-glibc [ 6/49]: OK br-arm-cortex-a9-musl [ 7/49]: SKIPPED br-arm-cortex-m4-full [ 8/49]: SKIPPED br-arm-full [ 9/49]: OK br-arm-full-nothread [10/49]: SKIPPED br-arm-full-static [11/49]: SKIPPED br-bfin-full [12/49]: SKIPPED br-i386-pentium4-full [13/49]: SKIPPED br-i386-pentium-mmx-musl [14/49]: SKIPPED br-m68k-5208-full [15/49]: SKIPPED br-m68k-68040-full [16/49]: SKIPPED br-microblazeel-full [17/49]: SKIPPED br-mips32r6-el-hf-glibc [18/49]: OK br-mips64-n64-full [19/49]: SKIPPED br-mips64r6-el-hf-glibc [20/49]: SKIPPED br-mipsel-o32-full [21/49]: OK br-nios2-glibc [22/49]: SKIPPED br-openrisc-uclibc [23/49]: SKIPPED br-powerpc-603e-basic-cpp [24/49]: SKIPPED br-powerpc64le-power8-glibc [25/49]: SKIPPED br-powerpc64-power7-glibc [26/49]: SKIPPED br-powerpc-e500mc-full [27/49]: SKIPPED br-sh4-full [28/49]: SKIPPED br-sparc64-glibc [29/49]: SKIPPED br-sparc-uclibc [30/49]: SKIPPED br-x86-64-core2-full [31/49]: OK br-x86-64-musl [32/49]: SKIPPED br-xtensa-full [33/49]: SKIPPED i686-ctng-linux-gnu [34/49]: OK linaro-aarch64 [35/49]: SKIPPED linaro-arm [36/49]: OK mips64el-ctng_n32-linux-gnu [37/49]: SKIPPED mips64el-ctng_n64-linux-gnu [38/49]: SKIPPED powerpc-ctng_e500v2-linux-gnuspe [39/49]: OK sourcery-arm-armv4t [40/49]: OK sourcery-arm [41/49]: OK sourcery-arm-thumb2 [42/49]: OK sourcery-mips64 [43/49]: SKIPPED sourcery-mips [44/49]: OK sourcery-nios2 [45/49]: SKIPPED sourcery-sh [46/49]: SKIPPED sourcery-x86-64 [47/49]: OK sourcery-x86 [48/49]: OK x86_64-ctng_locales-linux-gnu [49/49]: OK Signed-off-by: Bernd Kuhls Signed-off-by: Thomas Petazzoni

package/libunwind: disable for x86 with musl

2017-05-04T21:23:17+00:00

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

package/libunwind: simplify architecture dependencies

2017-05-04T21:21:04+00:00

BR2_ARM_CPU_HAS_ARM already embeddeds the fact that this is an ARM chip, so (BR2_arm || BR2_armeb) is forcibly true when BR2_ARM_CPU_HAS_ARM is. In other words, BR2_ARM_CPU_HAS_ARM can't be true unless either BR2_arm or BR2_armeb itslef is true. Simplify the logic accordingly. Signed-off-by: "Yann E. MORIN" Cc: Romain Naour Acked-by: Romain Naour Signed-off-by: Thomas Petazzoni

package/libunwind: disable for x86 with uClibc toolchain

2017-04-17T13:08:22+00:00

libunwind use sigreturn() while building for x86 [1] but this function is not available with uClibc-ng. 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 fail to build: [...]usr/lib/libunwind-generic.so: undefined reference to `sigreturn' collect2: error: ld returned 1 exit status Disable libunwind for x86 target when uClibc-ng is used. Fixes: http://autobuild.buildroot.net/results/54a/54afac8148cff5f3c17e83f80917fd9006948fe0//build-end.log [1] http://git.savannah.gnu.org/gitweb/?p=libunwind.git;a=blob;f=src/x86/Gos-linux.c;h=17aebc2974af50eb0bf8292689b2ed22a4c97866;hb=HEAD#l299 Signed-off-by: Romain Naour Tested-by: "Yann E. MORIN" Acked-by: "Yann E. MORIN" Signed-off-by: Thomas Petazzoni

arch: remove support for sh64

2016-09-08T20:15:15+00:00

It's been deprecated for quite some time now. Signed-off-by: Gustavo Zacarias Signed-off-by: Thomas Petazzoni

libunwind: fix architecture dependencies

2016-08-07T20:58:32+00:00

Due to a misplaced parenthesis, the libunwind dependency were incorrect. Indeed, they were of the form: default y if LIBC_TYPE && (arm dependency) || (list of other architectures) Which meant that that the LIBC_TYPE dependency was not taken into account for the "other architectures". This commit changes that to: default y if LIBC_TYPE && ((arm dependency) || list of other architectures) Without this fix, libunwind can be selected for example on PowerPC/uClibc configurations, while only PowerPC/glibc should be allowed. This fixes: http://autobuild.buildroot.net/results/96c53ff240dcd68fcc9e3d32c4026c9886edcbe7/ Similarly, it also fixes cases where SuperH/uClibc was allowed, while only SuperH/glibc should be allowed. This fixes: http://autobuild.buildroot.net/results/95a6cca21aea9914ba8bb3f571760fc054c53ecd/ Signed-off-by: Thomas Petazzoni Reviewed-by: "Yann E. MORIN" Signed-off-by: Thomas Petazzoni

libunwind: needs ARM instruction support

2016-07-23T20:58:44+00:00

Fixes: http://autobuild.buildroot.net/results/4cf/4cf517cd81d3aa5da26848edaba5df0bfbab2c77/ Signed-off-by: Gustavo Zacarias Signed-off-by: Thomas Petazzoni

libunwind: fix C library dependency

2016-02-01T18:32:42+00:00

The libunwind package currently dependency on glibc *or* uclibc snapshot. However, we are going to remove the support for uclibc snapshot, and uClibc-ng has equivalent functionality as uclibc snapshot. Moreover, musl is also capable of building libunwind for certain architectures. Therefore, this commit reworks the architecture dependencies of libunwind, to make it available on all architectures for which it is supported, depending on the capabilities of the different C libraries, and the implementation of libunwind on each architecture. On some architectures, libunwind uses the C library *context() functions, which are not provided by musl at all, and not provided by uClibc on all architectures. But on some other architectures, libunwind does not use the C library *context() functions, which explains why it can be built with musl on such architectures. Signed-off-by: Thomas Petazzoni Signed-off-by: Peter Korsgaard