[Bf-blender-cvs] [19b72f50d70] master: CMake/Windows: Enable JMC on compilers that support it.

[Lazydodo]

Commit: 19b72f50d704eb4061ae77a87bf7e8751e04a3ae
Author: Lazydodo
Date:   Tue Jul 30 14:40:05 2019 -0600
Branches: master
https://developer.blender.org/rB19b72f50d704eb4061ae77a87bf7e8751e04a3ae

CMake/Windows: Enable JMC on compilers that support it.

JMC [1] enables more productive debugging of C++ code in visual studio
this change enables it on debug builds for builds with visual studio 15.8
or higher.

[1] https://devblogs.microsoft.com/cppblog/announcing-jmc-stepping-in-visual-studio/

===================================================================

M	build_files/cmake/platform/platform_win32.cmake

===================================================================

diff --git a/build_files/cmake/platform/platform_win32.cmake b/build_files/cmake/platform/platform_win32.cmake
index 3fc0d20fb46..536f9c2a074 100644
--- a/build_files/cmake/platform/platform_win32.cmake
+++ b/build_files/cmake/platform/platform_win32.cmake
@@ -144,6 +144,11 @@ set(CMAKE_C_FLAGS_MINSIZEREL "${CMAKE_C_FLAGS_MINSIZEREL} /MT")
 set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} /MT")
 set(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO} /MT")
 
+#JMC is available on msvc 15.8 (1915) and up
+if(MSVC_VERSION GREATER 1914 AND NOT MSVC_CLANG)
+  set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} /JMC")
+endif()
+
 set(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} /SUBSYSTEM:CONSOLE /STACK:2097152 /INCREMENTAL:NO ")
 set(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} /NODEFAULTLIB:msvcrt.lib /NODEFAULTLIB:msvcmrt.lib /NODEFAULTLIB:msvcurt.lib /NODEFAULTLIB:msvcrtd.lib ")