The pkglibdir is used by neard.pc.in (so by autoconf) however the
automake defines it, not autoconf.  Add early definition of pkglibdir so
substitute in neard.pc.in will work correctly.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
 configure.ac | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure.ac b/configure.ac
index c1fdc44ae02d..ffe453049939 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,6 +15,10 @@ if (test "${libdir}" = '${exec_prefix}/lib'); then
 	libdir='${prefix}/lib'
 fi
 
+# pkglibdir is defined by automake but autoconf parses the neard.pc.in
+# which uses pkglibdir, therefore define it manually in autoconf.
+AC_SUBST([pkglibdir], ["\${libdir}/${PACKAGE_NAME}"])
+
 plugindir='${pkglibdir}/plugins'
 se_plugindir='${pkglibdir}/plugins-se'
 AC_SUBST(plugindir)
-- 
2.30.2