diff --git a/source/UIDS_AND_GIDS b/source/UIDS_AND_GIDS
new file mode 100644
index 0000000..aa9684a
--- /dev/null
+++ b/source/UIDS_AND_GIDS
@@ -0,0 +1,12 @@
+UIDs and GIDs used by custom packages
+=====================================
+
+UID		GID		Name		Note
+----------------------------------------------------------------------------------------------------------------------------------------------------------------
+34		34		spamd
+35		35		exim
+36		36		netdata
+37				greylistd	Uses group mail.
+38		38		majordomo
+		40		kvm		Deprecated.
+79		79		logger		Used by lumberjack.
diff --git a/source/buildconf b/source/buildconf
new file mode 100644
index 0000000..8972e24
--- /dev/null
+++ b/source/buildconf
@@ -0,0 +1,10 @@
+# Use ccache if available.
+CCACHE="$(command -v ccache)"
+[[ -n "$CCACHE" ]] && {
+  BUILD_ALTCC="$CCACHE gcc"
+  BUILD_ALTCXX="$CCACHE g++"
+}
+unset CCACHE
+
+# Override default package store location.
+PKG_STORE='/data/slackware/repo/$DIST_OS_ID-$DIST_OS_VERSION_ID'