configure.ac: Use xz for tarballs instead gz

Also use the new tar format defined by POSIX 1003.1-2001,
so It does not limit the length of file names.

diff --git a/configure.ac b/configure.ac
index a1ebb36..8a11a1b 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -9,7 +9,7 @@ AC_CONFIG_SRCDIR([configure.ac])
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_AUX_DIR([build-aux])
 
-AM_INIT_AUTOMAKE([1.11 -Wall foreign subdir-objects])
+AM_INIT_AUTOMAKE([1.11 -Wall foreign subdir-objects tar-pax no-dist-gzip dist-xz]])
 AM_SILENT_RULES([yes])
 
 # Checks for programs.