Windows builds with LLVM (MSVC and MinGW builds), with ASM

[Fsu0413]

Currently all our builds are targeting pure MSVC / MinGW with GCC. No builds are targeting LLVM.

There is VC-WIN64-CLANGASM-ARM configuration in OpenSSL since 3.1, where it supports ASM compile using clang-cl, and C code compile using MSVC cl and link the final executable together. Another thing is VC-CLANG-WIN64-CLANGASM-ARM, also available since 3.1, support whole program compile and link using clang-cl.

Things which should be tried on each branch:

Number	Configuration	Toolchain	CC	ASM	perlasm scheme
1	VC-CLANG-WIN32	MSVC	clang-cl	<none>	N/A
2				nasm	win32n
3	VC-CLANG-WIN64A			<none>	N/A
4				nasm	nasm
5	VC-CLANG-WIN64-ARM			<none>	N/A
6	VC-CLANG-WIN64-CLANGASM-ARM			clang-cl	win64
7	VC-WIN32-CLANGASM		cl	clang-cl	coff
8	VC-WIN64-CLANGASMA				mingw64
9	VC-WIN64-CLANGASM-ARM				win64
10	mingw	MinGW	clang	<none>	N/A
11				clang	coff
12	mingw64			<none>	N/A
13				clang	mingw64
14	mingwarm64			<none>	N/A
15				clang	win64

Notes about above toolchains:

1. clang-cl with MSVC toolchain should be built using official LLVM distribution
2. VC-CLANG-* configuration may be some extension of my project
3. clang with MinGW should be built using llvm-mingw from mstorsjo
4. mingwarm64 exists as MSYS2 downstream patch, so we just use the configuration name.

3.2:

• [ ] 1
• [ ] 2
• [ ] 3
• [ ] 4
• [ ] 5
• [ ] 6
• [ ] 7
• [ ] 8
• [ ] 9
• [ ] 10
• [ ] 11
• [ ] 12
• [ ] 13
• [ ] 14
• [ ] 15

Other branches should be same as 3.2 but there is possibility that ASM can't be supported

[Fsu0413]

CLANG ASM of Windows on ARM is currently broken