AC_CONFIG_MACRO_DIR([m4])
+dnl Enable system extensions (_GNU_SOURCE etc).
+AC_USE_SYSTEM_EXTENSIONS
+
AM_PROG_LIBTOOL
dnl Check for basic C environment.
AM_PROG_CC_C_O
-dnl Enable system extensions (_GNU_SOURCE etc).
-AC_USE_SYSTEM_EXTENSIONS
-
dnl Check support for 64 bit file offsets.
AC_SYS_LARGEFILE