Fix make problem with missing ragel

If the ragel isn't found, use echo command instead of blank variable.

Fix make problem with missing ragel
If the ragel isn't found, use echo command instead of blank variable.
f22c0614 · Daniel Salzman · 05669898 · f22c0614
Commit f22c0614 authored 12 years ago by Daniel Salzman
--- a/configure.ac
+++ b/configure.ac
@@ -51,7 +51,7 @@ AS_IF([test "x$YACC_BISON" != "xbison"],
 AC_PROG_INSTALL

 # Check for Ragel
-AC_PATH_PROG(RAGEL, ragel)
+AC_PATH_PROG([RAGEL], [ragel], [echo !UNPROCESSED! ragel])

 # Set compiler compatibility flags
 AC_PROG_CPP_WERROR