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package/leveldb: link with libatomic when needed

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On some architectures, atomic operations are provided by the libatomic
library from gcc. Linking with libatomic is therefore necessary,
otherwise the build fails with:

/home/buildroot/autobuild/instance-2/output-1/host/opt/ext-toolchain/bin/../lib/gcc/sparc-buildroot-linux-uclibc/7.4.0/../../../../sparc-buildroot-linux-uclibc/bin/ld: libleveldb.so.1.22.0: undefined reference to `__atomic_fetch_sub_4'

This is often for example the case on sparcv8 32 bit.

Fixes:
 - http://autobuild.buildroot.net/results/257a820bb87a874ce0e2152d2752845be972fabe

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
This commit is contained in:
Fabrice Fontaine 2019-10-29 17:25:27 +01:00 committed by Arnout Vandecappelle (Essensium/Mind)
parent 6646b220af
commit 5e63798170
1 changed files with 4 additions and 0 deletions
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4
package/leveldb/leveldb.mk
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@ -11,4 +11,8 @@ LEVELDB_LICENSE_FILES = LICENSE
LEVELDB_INSTALL_STAGING = YES
LEVELDB_DEPENDENCIES = snappy
ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)
LEVELDB_CONF_OPTS += -DCMAKE_EXE_LINKER_FLAGS=-latomic
endif
$(eval $(cmake-package))