Print help message then abort if someone tries to run configure (which they shouldn't do)

git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/libobjc/trunk@25125 72102866-910b-0410-8b05-ffd578937521

ChangeLog.GNUstep

@@ -1,3 +1,9 @@
+2007-05-06  Nicola Pero  <nicola.pero@meta-innovation.com>	
+
+	* configure: Added code at the very beginning to print an help
+	message and abort.  Users who don't read the README.GNUstep
+	might otherwise try to run configure, messing everything up.
+
 2007-02-28  Nicola Pero  <nicola.pero@meta-innovation.com>	
 
 	* GNUmakefile (GNUSTEP_MAKEFILES): Use gnustep-config to

configure

@@ -1,4 +1,15 @@
 #! /bin/sh
+
+echo "To compile this library, don't run the configure script. First edit the"
+echo "GNUmakefile to set the type of threading you want, then type"
+echo ""
+echo "make"
+echo "make install"
+echo ""
+echo "Please note that you need gnustep-make >= 2.0.0 to compile this library."
+
+exit 1
+
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