Semver thingy did not work

.gut/delta.toml

@@ -1,6 +1,6 @@
 template = "https://github.com/giellalt/template-lang-und"
-rev_id = 189
-template_sha = "5438107cc3b01d0ca6a436cc819b493886913aea"
+rev_id = 188
+template_sha = "039269192c86bc4e92e4de05023c97b6fa16b3e5"
 
 [replacements]
 __REPO__ = "lang-chr"

m4/giella-macros.m4

@@ -674,7 +674,7 @@ AS_IF([test "x$enable_grammarchecker" != "xno"],
         then: pipx install git+https://github.com/divvun/giellaltgramtools
       ])]),
     AC_MSG_RESULT(yes))
-_gtgramtool_min_version=1.0.1
+_gtgramtool_min_version=0.7.0
 gtgramtool_too_old_message="gtgramtool needs to be updated.
     If you installed it with pipx, run:
         pipx upgrade GiellaLTGramTools"
@@ -683,25 +683,10 @@ AS_IF([test "x${GTGRAMTOOL}" != xno],
         [_gtgramtool_version=$( "${GTGRAMTOOL}" --version | sed -e 's/^.*version //')],
         [_gtgramtool_version=0])
 AC_MSG_RESULT([$_gtgramtool_version])
-
-# Function to compare version numbers
-m4_define([compare_versions], [
-  m4_split([_gtgramtool_version], [gtgramtool_version_parts], [\[\.\]])
-  m4_split([_gtgramtool_min_version], [min_version_parts], [\[\.\]])
-  gtgramtool_version_ok=yes
-  for i in 1 2 3; do
-    if test ${gtgramtool_version_parts[$i]} -lt ${min_version_parts[$i]}; then
-      gtgramtool_version_ok=no
-      break
-    elif test ${gtgramtool_version_parts[$i]} -gt ${min_version_parts[$i]}; then
-      break
-    fi
-  done
-])
-
 AS_IF([test "x$enable_grammarchecker" != "xno"], 
       AC_MSG_CHECKING([whether the gtgramtool version is at least $_gtgramtool_min_version])
-      compare_versions
+      AX_COMPARE_VERSION([$_gtgramtool_version], [ge], [$_gtgramtool_min_version],
+                         [gtgramtool_version_ok=yes], [gtgramtool_version_ok=no])
     AS_IF([test "x${gtgramtool_version_ok}" != xno],
           [AC_MSG_RESULT([$gtgramtool_version_ok])],
           [AC_MSG_ERROR([$gtgramtool_too_old_message])]))