[LLVMdev] Missing libclang_rt.san-x86_64.a file for Compiler-rt

[Hongxu Chen]

Hi everyone,

    (Sorry if I'm asking at the wrong mail listing, but compiler-rt page
tells I'd better write on llvm-dev rather than cfe-dev/cfe-users.)

    I've just built LLVM/Clang+Compiler-rt (Compiler-rt is put inside
llvm/projects folder) and tried the -fsanitize option. But strangely the
link failed since it cannot find *libclang_rt.san-x86_64.a*. The error
message is as below:

        /usr/bin/ld: cannot find
/home/hongxu/RESEARCH/llvm-git/obj/bin/../lib/clang/3.7.0/lib/linux/libclang_rt.san-x86_64.a:
No such file or directory
        clang-3.7: error: linker command failed with exit code 1 (use -v to
see invocation)

    However inside the folder
*/home/hongxu/RESEARCH/llvm-git/obj/bin/../lib/clang/3.7.0/lib/linux/* there
are other libraries:

       > pwd
       /home/hongxu/RESEARCH/llvm-git/obj/lib/clang/3.7.0/lib/linux/
       > ll *.a |grep x86 | awk '{print $9}'
       libclang_rt.asan_cxx-x86_64.a
       libclang_rt.asan-preinit-x86_64.a
       libclang_rt.asan-x86_64.a
       libclang_rt.builtins-x86_64.a
       libclang_rt.dd-x86_64.a
       libclang_rt.dfsan-libc-x86_64.a
       libclang_rt.dfsan-x86_64.a
       libclang_rt.lsan-x86_64.a
       libclang_rt.msan-x86_64.a
       libclang_rt.profile-x86_64.a
       libclang_rt.tsan-x86_64.a
       libclang_rt.ubsan_cxx-x86_64.a
       libclang_rt.ubsan_standalone_cxx-x86_64.a
       libclang_rt.ubsan_standalone-x86_64.a
       libclang_rt.ubsan-x86_64.a

       I found that "libclang_rt.san-x86_64.a" was present at least for
Clang-3.6 for ArchLinux(
https://www.archlinux.org/packages/extra/x86_64/clang/files/). So how can I
build to get that library?


Thanks and Regards,
Hongxu
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