better flag variable assignment
@@ -50,7 +50,7 @@ LIBCURRENT=7 # sync
LIBREVISION=8 # with
LIBAGE=6 # CMakeLists.txt!
-AS_VAR_APPEND(CPPFLAGS," -DHAVE_EXPAT_CONFIG_H")
+AX_APPEND_FLAG([-DHAVE_EXPAT_CONFIG_H], [CPPFLAGS])
AC_CONFIG_HEADER([expat_config.h])
AM_PROG_AR
