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package/libgit2: link with -latomic if needed

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libgit2 is currently a library without any reverse dependencies so the
missing atomic symbols do not cause build failures yet.

libgit2 uses the atomics intrinsics on gcc >= 4.7 and the sync
intrinsics on previous gcc versions.  Since gcc 4.9 is the new
minimum, ignore the sync intrinsics requirements.

The next version of libgit2 will also build a binary, which will
expose the problem.

Signed-off-by: Nicolas Cavallari <nicolas.cavallari@green-communications.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit e992a3e771)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Nicolas Cavallari 2022-08-12 16:56:51 +02:00 committed by Peter Korsgaard
parent 89c63ae872
commit 6b1a7b69ab
1 changed files with 5 additions and 0 deletions
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5
package/libgit2/libgit2.mk
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@ -44,4 +44,9 @@ else
LIBGIT2_CONF_OPTS += -DUSE_HTTPS=OFF
endif
ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)
LIBGIT2_CONF_OPTS += \
-DCMAKE_SHARED_LINKER_FLAGS=-latomic
endif
$(eval $(cmake-package))