[yocto] [PATCH] libvirt: fix build error for arm

[kai.kang at windriver.com]

From: Kai Kang <kai.kang at windriver.com>

When build for architecture that don't use gcc atomic ops but pthread,
it fails to build for arm:

| ../tools/nss/.libs/libnss_libvirt_impl.a(libvirt_nss_la-virobject.o): In function `virClassNew':
| /buildarea2/kkang/builds/qemuarm-Aug03/bitbake_build/tmp/work/armv5e-wrs-linux-gnueabi/libvirt/1.3.5-r0/build/src/../../libvirt-1.3.5/src/util/virobject.c:153: undefined reference to `virAtomicLock'
| ../tools/nss/.libs/libnss_libvirt_impl.a(libvirt_nss_la-virobject.o): In function `virObjectNew':
| /buildarea2/kkang/builds/qemuarm-Aug03/bitbake_build/tmp/work/armv5e-wrs-linux-gnueabi/libvirt/1.3.5-r0/build/src/../../libvirt-1.3.5/src/util/virobject.c:205: undefined reference to `virAtomicLock'
| ../tools/nss/.libs/libnss_libvirt_impl.a(libvirt_nss_la-virobject.o): In function `virObjectUnref':
| /buildarea2/kkang/builds/qemuarm-Aug03/bitbake_build/tmp/work/armv5e-wrs-linux-gnueabi/libvirt/1.3.5-r0/build/src/../../libvirt-1.3.5/src/util/virobject.c:277: undefined reference to `virAtomicLock'
| ../tools/nss/.libs/libnss_libvirt_impl.a(libvirt_nss_la-virobject.o): In function `virObjectRef':
| /buildarea2/kkang/builds/qemuarm-Aug03/bitbake_build/tmp/work/armv5e-wrs-linux-gnueabi/libvirt/1.3.5-r0/build/src/../../libvirt-1.3.5/src/util/virobject.c:298: undefined reference to `virAtomicLock'
| collect2: error: ld returned 1 exit status

It is similar with:

http://libvirt.org/git/?p=libvirt.git;a=commit;h=12dc729

Signed-off-by: Kai Kang <kai.kang at windriver.com>
---
 .../0001-nsslinktest-also-build-virAtomic.h.patch  | 40 ++++++++++++++++++++++
 recipes-extended/libvirt/libvirt_1.3.5.bb          |  1 +
 2 files changed, 41 insertions(+)
 create mode 100644 recipes-extended/libvirt/libvirt/0001-nsslinktest-also-build-virAtomic.h.patch

diff --git a/recipes-extended/libvirt/libvirt/0001-nsslinktest-also-build-virAtomic.h.patch b/recipes-extended/libvirt/libvirt/0001-nsslinktest-also-build-virAtomic.h.patch
new file mode 100644
index 0000000..6ab1c4e
--- /dev/null
+++ b/recipes-extended/libvirt/libvirt/0001-nsslinktest-also-build-virAtomic.h.patch
@@ -0,0 +1,40 @@
+Upstream-Status: Submitted [http://www.redhat.com/archives/libvir-list/2016-August/msg00389.html]
+
+When build for architecture that don't use gcc atomic ops but pthread,
+it fails to build for arm:
+
+| ../tools/nss/.libs/libnss_libvirt_impl.a(libvirt_nss_la-virobject.o): In function `virClassNew':
+| /buildarea2/kkang/builds/qemuarm-Aug03/bitbake_build/tmp/work/armv5e-wrs-linux-gnueabi/libvirt/1.3.5-r0/build/src/../../libvirt-1.3.5/src/util/virobject.c:153: undefined reference to `virAtomicLock'
+| ../tools/nss/.libs/libnss_libvirt_impl.a(libvirt_nss_la-virobject.o): In function `virObjectNew':
+| /buildarea2/kkang/builds/qemuarm-Aug03/bitbake_build/tmp/work/armv5e-wrs-linux-gnueabi/libvirt/1.3.5-r0/build/src/../../libvirt-1.3.5/src/util/virobject.c:205: undefined reference to `virAtomicLock'
+| ../tools/nss/.libs/libnss_libvirt_impl.a(libvirt_nss_la-virobject.o): In function `virObjectUnref':
+| /buildarea2/kkang/builds/qemuarm-Aug03/bitbake_build/tmp/work/armv5e-wrs-linux-gnueabi/libvirt/1.3.5-r0/build/src/../../libvirt-1.3.5/src/util/virobject.c:277: undefined reference to `virAtomicLock'
+| ../tools/nss/.libs/libnss_libvirt_impl.a(libvirt_nss_la-virobject.o): In function `virObjectRef':
+| /buildarea2/kkang/builds/qemuarm-Aug03/bitbake_build/tmp/work/armv5e-wrs-linux-gnueabi/libvirt/1.3.5-r0/build/src/../../libvirt-1.3.5/src/util/virobject.c:298: undefined reference to `virAtomicLock'
+| collect2: error: ld returned 1 exit status
+
+It is similar with:
+
+http://libvirt.org/git/?p=libvirt.git;a=commit;h=12dc729
+
+Signed-off-by: Kai Kang <kai.kang at windriver.com>
+---
+ src/Makefile.am | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/Makefile.am b/src/Makefile.am
+index 12b66c2..6e55972 100644
+--- a/src/Makefile.am
++++ b/src/Makefile.am
+@@ -2989,6 +2989,8 @@ noinst_LTLIBRARIES += libvirt-nss.la
+ libvirt_nss_la_SOURCES =		\
+ 		util/viralloc.c			\
+ 		util/viralloc.h			\
++		util/viratomic.c		\
++		util/viratomic.h		\
+ 		util/virbitmap.c		\
+ 		util/virbitmap.h		\
+ 		util/virbuffer.c		\
+-- 
+2.9.0
+
diff --git a/recipes-extended/libvirt/libvirt_1.3.5.bb b/recipes-extended/libvirt/libvirt_1.3.5.bb
index f4a8f38..7ff2c5f 100644
--- a/recipes-extended/libvirt/libvirt_1.3.5.bb
+++ b/recipes-extended/libvirt/libvirt_1.3.5.bb
@@ -33,6 +33,7 @@ SRC_URI = "http://libvirt.org/sources/libvirt-${PV}.tar.gz;name=libvirt \
            file://0001-to-fix-build-error.patch \
            file://Revert-build-add-prefix-to-SYSTEMD_UNIT_DIR.patch \
            file://install-missing-file.patch \
+           file://0001-nsslinktest-also-build-virAtomic.h.patch \
           "
 
 SRC_URI[libvirt.md5sum] = "f9dc1e63d559eca50ae0ee798a4c6c6d"
-- 
2.9.2.368.g08bb350