ci: experiment with new mingw clang64

[SchrodingerZhu]

Add a clang64 based mingw CI.

This should follow #806

[SchrodingerZhu]

It seems that mingw-clang64 works OOB now.

However, there is a cmake issue that I do not understand:

 C:\Windows\system32\cmd.exe /C "cd . && C:\PROGRA~1\LLVM\bin\CLANG_~1.EXE -nostartfiles -nostdlib -O0 -g -Xclang -gcodeview -D_DEBUG -D_DLL -D_MT -Xclang --dependent-lib=msvcrtd -Xlinker /subsystem:console  -Wl,--no-undefined /DEBUG -rdynamic -fuse-ld=lld-link CMakeFiles/perf-contention-fast.dir/src/test/perf/contention/contention.cc.obj -o perf-contention-fast.exe -Xlinker /MANIFEST:EMBED -Xlinker /implib:perf-contention-fast.lib -Xlinker /pdb:perf-contention-fast.pdb -Xlinker /version:0.0   -lmincore.lib  -lkernel32 -luser32 -lgdi32 -lwinspool -lshell32 -lole32 -loleaut32 -luuid -lcomdlg32 -ladvapi32 -loldnames  && cd ."
clang++: error: no such file or directory: '/DEBUG'

By using if (NOT MINGW) , this should already be eliminated. For some reasons, the change does not apply here.

cc @mjp41

[ryancinsight]

It seems that mingw-clang64 works OOB now.

However, there is a cmake issue that I do not understand:

 C:\Windows\system32\cmd.exe /C "cd . && C:\PROGRA~1\LLVM\bin\CLANG_~1.EXE -nostartfiles -nostdlib -O0 -g -Xclang -gcodeview -D_DEBUG -D_DLL -D_MT -Xclang --dependent-lib=msvcrtd -Xlinker /subsystem:console  -Wl,--no-undefined /DEBUG -rdynamic -fuse-ld=lld-link CMakeFiles/perf-contention-fast.dir/src/test/perf/contention/contention.cc.obj -o perf-contention-fast.exe -Xlinker /MANIFEST:EMBED -Xlinker /implib:perf-contention-fast.lib -Xlinker /pdb:perf-contention-fast.pdb -Xlinker /version:0.0   -lmincore.lib  -lkernel32 -luser32 -lgdi32 -lwinspool -lshell32 -lole32 -loleaut32 -luuid -lcomdlg32 -ladvapi32 -loldnames  && cd ."
clang++: error: no such file or directory: '/DEBUG'

By using if (NOT MINGW) , this should already be eliminated. For some reasons, the change does not apply here.

cc @mjp41

could be this in cmakelists: target_link_options(${name} PRIVATE
$<$BOOL:${SNMALLOC_LINKER_SUPPORT_NO_ALLOW_SHLIB_UNDEF}:-Wl,--no-undefined>
$&lt;$&lt;PLATFORM_ID:Windows>:$<${ci_or_debug}:/DEBUG>>)
while I think you want: $&lt;$&lt;PLATFORM_ID:Windows>:$<${ci_or_debug}:LINKER:/DEBUG>>

[SchrodingerZhu]

I think it is working now.