I build llvm/clang/lld from source on Windows using mingw-64/gcc-6.3. I use clang++ both to test clang targeting gcc and clang targeting VC++. When using clang targeting VC++ I use the appropriate target triple when compiling and am trying to use lld to link the object file(s) into an exe. To do that I use the clang option "-fuse-ld=lld" when linking. According to the llvm doc on using lld with PE/COFF on Windows at
"LLD supports Windows operating system. When invoked as lld-link.exe or with -flavor link, the driver for Windows operating system is used to parse command line options, and it drives further linking processes. LLD accepts almost all command line options that the linker shipped with Microsoft Visual C++ (link.exe) supports."
Unfortunately with clang++ attempting to use "-fuse-ld=lld-link" when linking outputs:
"clang++.exe: error: unsupported value 'lld_link' for -linker option"
So I must use "-fuse-ld=lld". Does this mean that I should be passing "-flavor link" to the lld linker ? If so, how do I do that ? If not, what do I do to have lld work with PE/COFF linking rather than ELF linking ?
I have attempted to pass to the clang++ when linking:
1) "-flavor link", which outputs:
clang++.exe: error: unknown argument: '-flavor'
clang++.exe: error: no such file or directory: 'link'
2) -flavor=link", which outputs:
clang++.exe: error: unknown argument: '-flavor=link'
3) -Wl,-flavor,link, which outputs
C:\Programming\VersionControl\bninja_installed_clang\bin\lld: error: unknown argument: -flavor
4) -Wl,-flavor=link, which outputs
C:\Programming\VersionControl\bninja_installed_clang\bin\lld: error: unknown argument: -flavor=link
What is the "magic" invocation that will allow me to invoke the lld linker from the clang++ command, but get the linker to work in PE/COFF mode rather than in ELF mode, so it will link object files created by clang targeting VC++ ?