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a270097247
Update BR2_TOOLCHAIN_HAS_LIBATOMIC dependencies to avoid the following
build failure with libopenssl and
BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_ARMV7M_UCLIBC_STABLE:
/home/buildroot/autobuild/run/instance-2/output-1/host/opt/ext-toolchain/arm-buildroot-uclinux-uclibcgnueabi/bin/ld.real: ./libcrypto.a(libcrypto-lib-threads_pthread.o): in function `CRYPTO_atomic_or':
threads_pthread.c:(.text+0xfa): undefined reference to `__atomic_is_lock_free'
libatomic is available since gcc 4.8, when thread support is enabled.
However, the gcc logic in libatomic/configure.tgt does not recognize
"uclinux" as a valid OS part of the target tuple, and therefore it
does not build libatomic. The "uclinux" part of the tuple is used by
Buildroot when BR2_BINFMT_FLAT=y [1]. This broken logic has only been
fixed for arm since gcc 10.1.0 [2].
Indeed, bootlin armv7m is an uclibc toolchain compiled with atomic
support through libatomic.
[1] https://git.buildroot.net/buildroot/commit/?id=b3d1fb26dcadd8c570e2c415ce05398ecc810b32
[2] https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=b1e21e5a5d19b436f948710e09157c5b3244f541
Fixes:
- http://autobuild.buildroot.org/results/d25e898f9715bf6a21284807361a57735a7a2e1d
- http://autobuild.buildroot.org/results/e37ed5ad6ba41d610bffe9c234f699e203ef5069
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 8cb0f6e011)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
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