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
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Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches