[PATCH 2/4] autoconf: Error out on --without-shell and --without-perl

[Jakub Narebski <jnareb@gmail.com>]

Error out on --without-shell/--with-shell=no and
--without-perl/--with-perl=no instead of just warning
and continuing.

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
---
It's a matter of taste (and not doing unexpected)

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/configure.ac b/configure.ac
index e2da891..c2ddd9b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -37,7 +37,7 @@ # Used by GIT_ARG_SET_PATH(PROGRAM)
 AC_DEFUN([GIT_CONF_APPEND_PATH],
 [PROGRAM=m4_toupper($1); \
 if test "$withval" = "no"; then \
-	AC_MSG_WARN([You cannot use git without $1]); \
+	AC_MSG_ERROR([You cannot use git without $1]); \
 else \
 	if test "$withval" = "yes"; then \
 		AC_MSG_WARN([You should provide path for --with-$1=PATH]); \
-- 
1.4.1.1