diff --git a/configure.ac b/configure.ac
index b66e9c5..1215bb4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -22,8 +22,6 @@ NC_OPTIMISATION
 NC_WARNINGS
 NC_DEBUGGING
 
-NC_SUBPACKAGE_ENABLE
-
 LT_INIT
 
 AM_INIT_AUTOMAKE([1.14 foreign dist-xz dist-bzip2 subdir-objects])
@@ -56,7 +54,7 @@ AC_SUBST([UTIL_LIBS])
 
 AX_APPEND_FLAG([-include config.h])
 
-NC_SUBPACKAGE_PC([libcruft-vk.pc])
+NC_SUBPACKAGE([vk])
 
 AC_CONFIG_FILES([
     Doxyfile
diff --git a/libcruft-vk.pc.in b/libcruft-vk-system.pc.in
similarity index 100%
rename from libcruft-vk.pc.in
rename to libcruft-vk-system.pc.in
diff --git a/m4/nc b/m4/nc
index c028034..c561548 160000
--- a/m4/nc
+++ b/m4/nc
@@ -1 +1 @@
-Subproject commit c028034a395077d08d5458ae605a05a26bf4fcf5
+Subproject commit c5615481949aa6aaedd2c5d221ed17d2e05009b0