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protobuf: link with libatomic when needed

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The protobuf library uses atomic intrinsics, so we need to link
against libatomic.

Fixes the build of protobuf on Sparc:

  http://autobuild.buildroot.net/results/f3d76eaebd529a61bce849e355182c60f233ed06/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Thomas Petazzoni 2017-05-15 22:38:32 +02:00 committed by Peter Korsgaard
parent 4e00f9daa0
commit ef9ffa3426
1 changed files with 4 additions and 0 deletions
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4
package/protobuf/protobuf.mk
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@ -17,6 +17,10 @@ PROTOBUF_LICENSE_FILES = LICENSE
PROTOBUF_DEPENDENCIES = host-protobuf
PROTOBUF_CONF_OPTS = --with-protoc=$(HOST_DIR)/usr/bin/protoc
ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)
PROTOBUF_CONF_ENV += LIBS=-latomic
endif
PROTOBUF_INSTALL_STAGING = YES
PROTOBUF_PATCH = https://github.com/google/protobuf/commit/416f90939d4de58fe1a4e2489120010313183291.patch