autoconf: disable Fortran/C++ checks

For some reason, libtool wants to check for Fortran and C++ compilers,
which takes some time.  Disable these checks to speed up ./configure
runs.

diff --git a/configure.ac b/configure.ac
index 4cc0d535e6e04e1dde8162a8839f2c3056097bef..fb09fb61825aed762224783ff59d42efb14db869 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -2,7 +2,10 @@ AC_PREREQ(2.60a)
 AC_INIT(libass, 0.9.6)
 AM_INIT_AUTOMAKE
 AC_CONFIG_MACRO_DIR([shave])
-AM_PROG_LIBTOOL
+# Disable C++/Fortran checks
+define([AC_LIBTOOL_LANG_CXX_CONFIG], [:])
+define([AC_LIBTOOL_LANG_F77_CONFIG], [:])
+AC_PROG_LIBTOOL
 AC_CONFIG_SRCDIR([libass/ass.c])
 AC_CONFIG_HEADER([config.h])