configure: check whether gperf is compatible

closes #337
2021-02-13 09:53:55 +00:00 · 2021-02-13 09:53:55 +00:00 · 4147e917d6
commit 4147e917d6
parent adad565c03
1 changed files with 7 additions and 0 deletions
--- a/configure.ac
+++ b/configure.ac
@ -210,7 +210,14 @@ AH_TEMPLATE([HAVE_GPERF],
 	    [Whether you have gperf installed for faster config parsing.])

 if test "x$GPERF" != "x" -a "x$GPERF" != "xno" ; then
+  AS_ECHO_N(["checking whether gperf is recent enough... "])
+  if "$GPERF" < src/conf-tokens.gperf >/dev/null 2>&1 ; then
+    AS_ECHO("yes")
    AC_DEFINE(HAVE_GPERF)
+  else
+    AM_CONDITIONAL(HAVE_GPERF, false)
+    AS_ECHO("no")
+  fi
 fi

 AC_CONFIG_FILES([