[x265] Trying to migrate MSYS MinGW32 toolchain to MSYS2 MinGW32/64 of MABS

[Mario *LigH* Rohkrämer]

Greetings developers and contributors...

Because my usual provider of MSYS environments (XhmikosR) doesn't update  
regularly, and the original MSYS (Win32) project as such may be a bit  
obsolete already, I thought of moving to

	https://github.com/jb-alvarado/media-autobuild_suite/

as a regularly self-updating MSYS2 x86-64 environment (using pacman) which  
provides both MinGW32 and MinGW64 launchers.

Of course, media-autobuild suite (MABS) builds its own Win32 and Win64  
binaries of x265. Still, I would like to manually build them on demand  
with my own options, and also keep the libx265 DLL's generated in parallel  
to the EXE's (which MABS does not save back).

So I tested a bit, tried to understand make and cmake errors, tuned my  
shell scripts building the HDR10+ versions ... but I hit my threshold when  
it came to editing the toolchain file for cross compilation  
(build/msys/toolchain-x86_64-w64-mingw32.cmake as template).

In the MSYS2 MinGW32 environment of MABS, the Win64 c.c. versions are not  
named "x86_64-w64-mingw32-*" but "i686-w64-mingw32-*" ... well, I guess I  
could have learned sed to patch this while copying the file to my own  
structure.

But furthermore, a Win64 c.c. version of windres seems to be completely  
missing (only the native windres.exe in msys64/mingw32/bin), and ranlib is  
gcc-ranlib (i686-w64-mingw32-gcc-ranlib.exe); and before copying files  
 from one end to the other, I gave up here, using the workaround to start  
MinGW32 and MinGW64 separately now, for compiling a Win32 build and a  
Win64 build of x265 natively instead, without c.c. toolchain files.

If anyone cares, I wonder if toolchain files for an MSYS2 environment with  
MinGW32 or MinGW64, based on MABS, could be provided from the x265 project  
one day ... just an idea, no demand. But one or the other of you will  
probably be much more experienced than me, finding an elegant solution.

-- 

Fun and success!
Mario *LigH* Rohkrämer
mailto:contact at ligh.de