prefixed m4 macros in configure.ac
@@ -23,11 +23,12 @@ dnl
dnl NOTE: esyscmd() is a GNU M4 extension. Thus, we wrap it in an appropriate
dnl test. I believe this test will work, but I don't have a place with non-
dnl GNU M4 to test it right now.
-define([expat_version], ifdef([__gnu__],
+m4_define([expat_version],
+ m4_ifdef([__gnu__],
[esyscmd(conftools/get-version.sh lib/expat.h)],
[2.2.x]))
AC_INIT(expat, expat_version, expat-bugs@libexpat.org)
-undefine([expat_version])
+m4_undefine([expat_version])
AC_CONFIG_SRCDIR([Makefile.in])
AC_CONFIG_AUX_DIR([conftools])
