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[libvirt] [PATCH] build: add LIBNL_CFLAGS to build of libvirt_lxc

(pushing under the build breaker rule)

When libvirt_lxc is built, it uses the utility library and #includes
virnetdev.h, which #includes virnetlink.h, which includes

Normally, the netlink include directory would be just off
/usr/include, so that wouldn't create a problem, but on Fedora and
RHEL systems using libnl3, the libnl includes have been moved into
/usr/include/libnl3 (to allow concurrent installation of libnl-1.1).

All other binaries that need it have added $(LIBNL_CFLAGS) to their
CFLAGS, but not libvirt_lxc, so it fails to build on Fedora and RHEL
that have only libnl3-devel installed. This was previously unnoticed
because everyone was building with libnl headers in
/usr/include/netlink (even on systems with the headers in
/usr/include/libnl3/netlink, many people (like me) usually also have
the libnl1.1 headers in /usr/include/netlink).

This patch adds the necessary CFLAGS for libvirt_lxc.

Note that we don't need to add $(LIBNL_LIBS) to the LDADD for this
binary, because it never directly calls libnl functions, but only
calls them indirectly through the util library, which it's already
linking against.
 src/Makefile.am | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Makefile.am b/src/Makefile.am
index 995e032..95e1bea 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1650,7 +1650,8 @@ libvirt_lxc_LDADD += $(APPARMOR_LIBS)
 libvirt_lxc_CFLAGS =				\
 		-I$(top_srcdir)/src/conf	\
+		$(AM_CFLAGS)                    \
 libvirt_lxc_CFLAGS += $(BLKID_CFLAGS)
 libvirt_lxc_LDADD += $(BLKID_LIBS)

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