# HG changeset patch
# User Gilles Duboscq <duboscq@ssw.jku.at>
# Date 1398352524 -7200
# Node ID b3cd96f137a683152ed517919d82c31654c65fbb
# Parent  1b82cd9e72e990856172abf882238ca55525c654
mx build: make --error-prone, --jdt and --force-javac mutually exclusive

diff -r 1b82cd9e72e9 -r b3cd96f137a6 mxtool/mx.py
--- a/mxtool/mx.py	Thu Apr 24 17:06:23 2014 +0200
+++ b/mxtool/mx.py	Thu Apr 24 17:15:24 2014 +0200
@@ -1800,11 +1800,13 @@
     parser.add_argument('--only', action='store', help='comma separated projects to build, without checking their dependencies (omit to build all projects)')
     parser.add_argument('--no-java', action='store_false', dest='java', help='do not build Java projects')
     parser.add_argument('--no-native', action='store_false', dest='native', help='do not build native projects')
-    parser.add_argument('--force-javac', action='store_true', dest='javac', help='use javac despite ecj.jar is found or not')
-    parser.add_argument('--jdt', help='path to ecj.jar, the Eclipse batch compiler (default: ' + defaultEcjPath + ')', default=defaultEcjPath, metavar='<path>')
     parser.add_argument('--jdt-warning-as-error', action='store_true', help='convert all Eclipse batch compiler warnings to errors')
     parser.add_argument('--jdt-show-task-tags', action='store_true', help='show task tags as Eclipse batch compiler warnings')
-    parser.add_argument('--error-prone', dest='error_prone', help='path to error-prone.jar', metavar='<path>')
+    compilerSelect = parser.add_mutually_exclusive_group()
+    compilerSelect.add_argument('--error-prone', dest='error_prone', help='path to error-prone.jar', metavar='<path>')
+    compilerSelect.add_argument('--jdt', help='path to ecj.jar, the Eclipse batch compiler (default: ' + defaultEcjPath + ')', default=defaultEcjPath, metavar='<path>')
+    compilerSelect.add_argument('--force-javac', action='store_true', dest='javac', help='use javac despite ecj.jar is found or not')
+    
 
     if suppliedParser:
         parser.add_argument('remainder', nargs=REMAINDER, metavar='...')