--- qsampler/trunk/configure.ac	2016/10/24 20:22:41	3027
+++ qsampler/trunk/configure.ac	2016/10/26 16:39:12	3028
@@ -5,14 +5,18 @@
 AC_CONFIG_HEADERS(src/config.h)
 AC_CONFIG_FILES(Makefile qsampler.spec src/src.pri src/qsampler.desktop)
 
+# Build date and time.
+AC_CACHE_VAL([ac_cv_build_date],
+   [ac_cv_build_date=$(date +"%b %d %Y %H:%M %z")])
+ac_build_date="$ac_cv_build_date"
+AC_DEFINE_UNQUOTED(CONFIG_BUILD_DATE, ["$ac_build_date"], [Build date and time.])
+
 # Sanitize version string.
-ac_version=$(echo $PACKAGE_VERSION | sed -r 's/^([0-9|\.]+).*$/\1/')
+AC_CACHE_VAL([ac_cv_build_version],
+   [ac_cv_build_version=$(echo $PACKAGE_VERSION | sed -r 's/^([[0-9|\.]]+).*$/\1/')])
+ac_version="$ac_cv_build_version"
 AC_SUBST(ac_version)
 
-# Build date and time.
-AC_CACHE_VAL([ac_cv_build_date], [ac_cv_build_date=$(date +"%b %d %Y %H:%M %z")])
-AC_DEFINE_UNQUOTED(CONFIG_BUILD_DATE, ["$ac_cv_build_date"], [Build date and time.])
-
 # Set default installation prefix.
 AC_PREFIX_DEFAULT(/usr/local)
 if test "x$prefix" = "xNONE"; then