won't work with llvm-ar

[ebenali]

-DCMAKE_AR=llvm-ar -DCMAKE_C_FLAGS="-flto=thin" -DCMAKE_...=... ...

[  2%] Linking C static library libcmake_git_version_tracking.a                                                                         
/usr/bin/ar: invalid option -- 'e'                                                                                                      
Usage: /usr/bin/ar [emulation options] [-]{dmpqrstx}[abcDfilMNoOPsSTuvV] [--plugin <name>] [member-name] [count] archive-file file...   
       /usr/bin/ar -M [<mri-script]                                                                                                     
.
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[andrew-hardin]

I'd like to reproduce this failure - could you please provide just a bit more information?

[ebenali]

this was an attempt to override all the CMAKE_* variables and use the llvm- prefixed parts without having to mess with linux's "Alternatives"

The dependent project has LANGUAGES set to CXX so maybe I neglected to set C-specific cmake vars for referencing the 'ar' binary during some stage in the configure/build.

--- Specifically i was using these

{
                "CMAKE_AR": "llvm-ar",
                "CMAKE_NM": "llvm-nm",
                "CMAKE_OBJCOPY": "llvm-objcopy",
                "CMAKE_OBJDUMP": "llvm-objdump",
                "CMAKE_RANLIB": "llvm-ranlib",
                "CMAKE_READELF": "llvm-readelf",
                "CMAKE_STRIP": "llvm-strip",
                "CMAKE_DLLTOOL": "llvm-dlltool",
                "CMAKE_C_COMPILER": "clang",
                "CMAKE_CXX_COMPILER": "clang++",
                "CMAKE_CXX_FLAGS": "-stdlib=libc++ -fuse-ld=lld --rtlib=compiler-rt -flto=thin",
                "CMAKE_C_FLAGS": "-fuse-ld=lld --rtlib=compiler-rt -flto=thin",
                "CMAKE_EXE_LINKER_FLAGS": "-fuse-ld=lld -flto=thin --rtlib=compiler-rt",
                "CMAKE_SHARED_LINKER_FLAGS": "-fuse-ld=lld -flto=thin --rtlib=compiler-rt",
                "CMAKE_STATIC_LINKER_FLAGS": "-fuse-ld=lld -flto=thin --rtlib=compiler-rt"
}

If you are unable to reproduce this issue feel free to just close, thanks.