configure: Fix config version checks for x.y versioning (without .z)

diff --git a/configure.ac b/configure.ac
index c7d26170acae00f8435051ccae8bb8e8ece29741..60f98647d566cae34659355f189b0c09260ef049 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -257,8 +257,12 @@ AM_ICONV
 # SIZE_MAX is missing without this
 CXXFLAGS="$CXXFLAGS -D__STDC_LIMIT_MACROS"
 
-# Use the first x.y.z numbers of the version.
-DOVECOT_CONFIG_VERSION=$(echo "$PACKAGE_VERSION" | $SED 's/^\([[0-9]]*\.[[0-9]]*\.[[0-9]]*\).*$/\1/')
+# Use the first x.y.z numbers of the version. Also allow x.y numbering.
+AS_IF([echo "$PACKAGE_VERSION" | grep '^[[0-9]]*\.[[0-9]]*\.[[0-9]]'], [
+  DOVECOT_CONFIG_VERSION=$(echo "$PACKAGE_VERSION" | $SED 's/^\([[0-9]]*\.[[0-9]]*\.[[0-9]]*\).*$/\1/')
+], [
+  DOVECOT_CONFIG_VERSION=$(echo "$PACKAGE_VERSION" | $SED 's/^\([[0-9]]*\.[[0-9]]*\).*$/\1/')
+])
 if test "$is_pro_build" = "yes"; then
   SET_PRO_DEFINES
   AC_SUBST(DOVECOT_ASSET_URL, "doc.dovecotpro.com")