configure.ac: fixed error message.

Message should report 'rst2man' as well as 'rst2man.py'.

diff --git a/re2c/configure.ac b/re2c/configure.ac
index 2bef2bb791b8264f16f87bbc65a0f83a2cbab18d..b0978ebc9c783fc324be7bea64be9f2f368b46c1 100644 (file)
--- a/re2c/configure.ac
+++ b/re2c/configure.ac
@@ -20,7 +20,7 @@ AM_CONDITIONAL([REBUILD_DOCS], [test "x$enable_docs" = "xyes"])
 AM_COND_IF([REBUILD_DOCS], [
     AC_CHECK_PROGS(RST2MAN, [rst2man rst2man.py], no)
     AS_IF([test "x$RST2MAN" = "xno"], [
-        AC_MSG_ERROR([need rst2man.py for --enable-docs])
+        AC_MSG_ERROR([need rst2man or rst2man.py for --enable-docs])
     ])
 ])