+# Check version of program ($1)
+# If version is smaller than requested ($3),
+# add entry to missing-list ($2, one of 'OPTIONAL', 'REQUIRED').
+AC_DEFUN(STEPMAKE_CHECK_VERSION, [
+ r="`eval echo '$'"$1"`"
+ AC_MSG_CHECKING([$r version])
+ exe=`STEPMAKE_GET_EXECUTABLE($r)`
+ ver=`STEPMAKE_GET_VERSION($exe)`
+ num=`STEPMAKE_NUMERIC_VERSION($ver)`
+ req=`STEPMAKE_NUMERIC_VERSION($3)`
+ AC_MSG_RESULT([$ver])
+ if test "$num" -lt "$req"; then
+ STEPMAKE_ADD_ENTRY($2, ["$r $3 (installed: $ver)"])
+ fi
+])