define _DEBUG for debug builds (cherry picked from commit 3e261c022623306d4dba0cb11fa...

diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
index 28d8d56..d4b2629 100644 (file)
--- a/cmake/CMakeLists.txt
+++ b/cmake/CMakeLists.txt
@@ -110,6 +110,8 @@ if(WIN32)
   set (CMAKE_DEBUG_POSTFIX "d")
 endif(WIN32)
 
+SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}  -D_DEBUG")
+
 #########################################################################
 # Windows CE
 #