From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Mon, 15 May 2017 20:38:32 +0000 (+0200)
Subject: protobuf: link with libatomic when needed
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ef9ffa3426edc895dc180d45b48bf305522b3450;p=buildroot.git

protobuf: link with libatomic when needed

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>
---

diff --git a/package/protobuf/protobuf.mk b/package/protobuf/protobuf.mk
index 610da8c04a..2cd10ebad2 100644
--- a/package/protobuf/protobuf.mk
+++ b/package/protobuf/protobuf.mk
@@ -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