Fix "make distcheck"
diff --git a/configure.ac b/configure.ac
index 14c86b7..6f658cd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -9,8 +9,6 @@
AC_CONFIG_SRCDIR([src/harfbuzz.pc.in])
AC_CONFIG_HEADERS([config.h])
-AC_USE_SYSTEM_EXTENSIONS
-
AM_INIT_AUTOMAKE([1.11.1 gnits tar-ustar dist-bzip2 no-dist-gzip -Wall no-define color-tests -Wno-portability])
AM_CONDITIONAL(AUTOMAKE_OLDER_THAN_1_13, test $am__api_version = 1.11 -o $am__api_version = 1.12)
AM_SILENT_RULES([yes])
@@ -21,6 +19,7 @@
LT_INIT([disable-static])
# Check for programs
+AC_USE_SYSTEM_EXTENSIONS
AC_PROG_CC
AM_PROG_CC_C_O
AC_PROG_CXX
