From 8d2fbf80841a6b2136ea168fd3b6855a08f86a60 Mon Sep 17 00:00:00 2001
From: Jussi Pakkanen <jpakkane@gmail.com>
Date: Sun, 21 May 2017 22:02:37 +0300
Subject: [PATCH] Clarify multiple uses of -D. Closes #1836.

---
 mesonbuild/mesonmain.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mesonbuild/mesonmain.py b/mesonbuild/mesonmain.py
index 4fecc5847..70f4027ca 100644
--- a/mesonbuild/mesonmain.py
+++ b/mesonbuild/mesonmain.py
@@ -64,8 +64,8 @@ add_builtin_argument('errorlogs', action='store_false')
 
 parser.add_argument('--cross-file', default=None,
                     help='File describing cross compilation environment.')
-parser.add_argument('-D', action='append', dest='projectoptions', default=[],
-                    help='Set project options.')
+parser.add_argument('-D', action='append', dest='projectoptions', default=[], metavar="option",
+                    help='Set the value of an option, can be used several times to set multiple options.')
 parser.add_argument('-v', '--version', action='version',
                     version=coredata.version)
                     # See the mesonlib.WrapMode enum for documentation