- Merged in Microsoft's Unreal Build Tool changes for VS 2015 support, and Universal App Platform support
- VS 2015 support is disabled by default (the engine is not yet compiling with VS 2015)
- Use the new '-2015' option when generating project files to enable VS 2015 support
- Windows SDK 8.1 is used by default. To use Windows SDK 10, enable WindowsPlatform.bUseWindowsSDK10
- UAP support is disabled (not supported yet, work in progress.) Use WinUAPPlatform.bEnableUAPSupport to enable it.
- Various loose ends still remain (search for "@todo UAP" in Unreal Build Tool code)
[CL 2537920 by Mike Fricker in Main branch]
- Updated UBT to allow us to setup platform information prior to setting the intermediate directory, ran by RobM
- Removed some code that allowed uis to rename binaries. We now use architecture for our _xp suffix.
- Added clarity to the WindowsPlatform XP checks. We can now specify XP support "If Available" which atm is only the case for win32. We have an IsWindowsXPSupported() call now in the windows build platform.
- Windows XP support can now be requested through UBT on the commandline. Specify using -winxp
Kellans GUBP changes included.
#CodeReview Kellan.Carr
[CL 2422021 by Terence Burns in Main branch]
- Disclaimer: This is all experimental forward-looking stuff, we don't recommend using this yet!
- Added native support for Clang command-line on Windows ('clang-cl' is not required, but still supported)
- Clang debug symbols are now Visual Studio compatible (use latest Clang 3.6.0 prelease build.)
- Clang linker (LLD.exe) now works with most UE4 binaries, but debug symbols won't work
- New 'WindowsPlatform.bUseVCCompilerArgs' that controls whether to the VC-style wrapper with Clang
- Implemented precompiled header support (requires native Clang binary.) There are still a few bugs in Clang with struct packing which prevent us from using PCHs on Windows though.
- Editor still can't compile under Clang because of some DX header file issues, possibly system include related.
- Unreal Build Tool: Reduced default performance spew when using the local executor (non-XGE builds.)
[CL 2393051 by Mike Fricker in Main branch]
Lots of environmental stuff read once per platform change instead of multiple times per file compiled.
VC environment state moved into its own class/file.
Environment passed around instead of globally referenced.
#codereview robert.manuszewski,mike.fricker,senastian.kowalczyk,ankit.khare,phillip.kavan
[CL 2271997 by Steve Robb in Main branch]
