From: Martin Quinson <martin.quinson@loria.fr>
Date: Wed, 9 Mar 2016 15:40:35 +0000 (+0100)
Subject: cmake: fight against empty definitions
X-Git-Tag: v3_13~453^2~7
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/809ffede4e61d5404cb3a17286b5a4fb843a33a3

cmake: fight against empty definitions
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 30b29781d0..7ab5b02ab7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -330,7 +330,9 @@ foreach(var
   HAVE_PROCESS_VM_READV
   HAVE_MMAP
   HAVE_VASPRINTF)
-  if(NOT DEFINED ${var})
+  if(${var})
+    set(${var} 1)
+  else()
     set(${var} 0)
   endif()
 endforeach()