* configure.in (rubylibprefix): No ruby, No libprefix.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29876 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Tue Nov 23 06:30:18 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* configure.in (rubylibprefix): No ruby, No libprefix.
+
 Tue Nov 23 06:26:26 2010  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ChangeLog (change-log-indent-text): hunging indent.

configure.in

@@ -2612,7 +2612,10 @@ AS_CASE(["$target_os"],
 rubylibprefix='${libdir}/${RUBY_BASE_NAME}'
 AC_ARG_WITH(rubylibprefix,
 	    AS_HELP_STRING([--with-rubylibprefix=DIR], [prefix for ruby libraries [[LIBDIR/RUBY_BASE_NAME]]]),
-	    [rubylibprefix=$withval])
+	    [if test "x$withval" = xno; then
+		AC_MSG_ERROR([No ruby, No libprefix])
+	    fi
+	    rubylibprefix"=$withval"])
 RUBY_LIB_PREFIX=`eval echo \\"${rubylibprefix}\\"`
 AC_SUBST(rubylibprefix)