Index: auctex/preview/aclocal.m4
diff -u auctex/preview/aclocal.m4:1.62 auctex/preview/aclocal.m4:1.63
--- auctex/preview/aclocal.m4:1.62 Mon May 2 10:37:49 2005
+++ auctex/preview/aclocal.m4 Sun May 22 20:56:18 2005
@@ -44,13 +44,27 @@
AC_ARG_WITH(emacs,
[ --with-emacs@<:@=PATH@:>@ Use Emacs to build (on PATH if given)],
[if test "${withval}" = "yes"; then EMACS=emacs
- else if test "${withval}" = "no"; then EMACS=xemacs
- else EMACS="${withval}"; fi ; fi])
+ elif test "${withval}" = "no"; then EMACS=xemacs
+ else EMACS="${withval}"; fi])
+
AC_ARG_WITH(xemacs,
[ --with-xemacs@<:@=PATH@:>@ Use XEmacs to build (on PATH if given)],
- [if test "${withval}" = "yes"; then EMACS=xemacs;
- else if test "${withval}" = "no"; then EMACS=emacs
- else EMACS="${withval}"; fi ; fi])
+ [if test "x${withval}" != xno
+ then
+ if test "x${with_emacs}" != xno -a "x${with_emacs}" != x
+ then
+ AC_MSG_ERROR([[cannot use both Emacs and XEmacs]])
+ fi
+ if test "x${withval}" = "xyes"
+ then
+ EMACS=xemacs
+ else
+ EMACS="${withval}"
+ fi
+ elif test "x${with_emacs}" = xno
+ then
+ AC_MSG_ERROR([[need to use either Emacs or XEmacs]])
+ fi])
# "${prefix}/bin" is for Windows users
AC_PATH_PROGS(EMACS, ${EMACS} emacs xemacs, "", ${PATH} "${prefix}/bin" )
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