llvm dev - Jan 2021 - Can't seem to build libclang_rt.profile

Hello Fangrui,

I'm still not following, if you could help me a bit more.  I added ninja
but seems to not have fixed anything.
This is what I did:

cmake
-DCMAKE_BUILD_TYPE=Release  -DBENCHMARK_BUILD_32_BITS:BOOL=1
-DLLVM_BUILD_INSTRUMENTED=IR
-DLLVM_ENABLE_PROJECTS=lld,clang,compiler-rt,clang-tools-extra,libclc
-DLLVM_ENABLE_ZLIB:bool=0  -G
Ninja -DCMAKE_INSTALL_PREFIX=../../llvm_32 ../

ninja all
ninja install

It made no difference. I could not find ninja profile and ninja
install-profile.

Thank you so much for your help!

Still no library files such as libclang_rt.profile

On Fri, Jan 15, 2021 at 7:59 PM Fangrui Song <maskray at google.com>
wrote:
> On 2021-01-15, ehsan fatehi via llvm-dev wrote:
> >Hello,
> >
> >
> >I'm trying to build LLVM from scratch as I need 32 bit library
support. I
> >am using certain flags ( -fprofile-arc) that require
libclang_rt.profile,
> >specifically libclang_rt.profile-i386.a.
> >
> >This is the error I encounter:
> >ld.lld: error: cannot open
> >/llvm_32/lib/clang/10.0.1/lib/linux/libclang_rt.profile-i386.a: No such
> >file or directory
> >clang-10: error: linker command failed with exit code 1 (use -v to see
> >invocation)
> >
> >
> >If you look at the directory of which it complains, there is nothing in
> >there
> >/nfs/proj/fast/user/efatehi/llvm_32/lib/clang/10.0.1/
> >Only file is directory to include, no lib directory whatsoever, meaning
> >nothing is being built here..
> >
> >
> >I'm trying with llvm-project-10.0.1
> >
> >llvm-project-10.0.1.tar.xz
> >
> >
> >Using:
> >
> >cmake -DCMAKE_BUILD_TYPE=Release  -DBENCHMARK_BUILD_32_BITS:BOOL=1
> >-DLLVM_BUILD_INSTRUMENTED=IR
> >-DLLVM_ENABLE_PROJECTS=lld,clang,compiler-rt,clang-tools-extra,libclc
> >-DLLVM_ENABLE_ZLIB:bool=0  -DLLVM_ENABLE_EH=ON -DLLVM_ENABLE_PIC=ON
> >-DLLVM_ENABLE_RTTI=ON -DCOMPILER_RT_BUILD_BUILTINS=On
> >-DCOMPILER_RT_USE_BUILTINS_LIBRARY=On
> -DCMAKE_INSTALL_PREFIX=../..//llvm_32
> >../
> >
> >Any idea what I am doing wrong here?
> >
> >Thanks
>
> ninja clang  does not build some needed runtime libraries.
> For -fprofile-arcs, `ninja profile`. To install it, `ninja
> install-profile`.
>
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The -DLLVM_ENABLE_PROJECTS list needs to be `;` separated.
If the list has `compiler-rt`, you should get a build target called
`profile` which builds libclang_rt.profile-$arch.a

On Sat, Jan 16, 2021 at 11:27 AM ehsan fatehi via llvm-dev
<llvm-dev at lists.llvm.org> wrote:
>
> Hello Fangrui,
>
> I'm still not following, if you could help me a bit more.  I added
ninja but seems to not have fixed anything.
> This is what I did:
>
> cmake -DCMAKE_BUILD_TYPE=Release  -DBENCHMARK_BUILD_32_BITS:BOOL=1 
-DLLVM_BUILD_INSTRUMENTED=IR 
-DLLVM_ENABLE_PROJECTS=lld,clang,compiler-rt,clang-tools-extra,libclc 
-DLLVM_ENABLE_ZLIB:bool=0  -G Ninja -DCMAKE_INSTALL_PREFIX=../../llvm_32 ../
>
> ninja all
> ninja install
>
> It made no difference. I could not find ninja profile and ninja
install-profile.
>
> Thank you so much for your help!
>
> Still no library files such as libclang_rt.profile
>
>
> On Fri, Jan 15, 2021 at 7:59 PM Fangrui Song <maskray at google.com>
wrote:
>>
>> On 2021-01-15, ehsan fatehi via llvm-dev wrote:
>> >Hello,
>> >
>> >
>> >I'm trying to build LLVM from scratch as I need 32 bit library
support. I
>> >am using certain flags ( -fprofile-arc) that require
libclang_rt.profile,
>> >specifically libclang_rt.profile-i386.a.
>> >
>> >This is the error I encounter:
>> >ld.lld: error: cannot open
>> >/llvm_32/lib/clang/10.0.1/lib/linux/libclang_rt.profile-i386.a: No
such
>> >file or directory
>> >clang-10: error: linker command failed with exit code 1 (use -v to
see
>> >invocation)
>> >
>> >
>> >If you look at the directory of which it complains, there is
nothing in
>> >there
>> >/nfs/proj/fast/user/efatehi/llvm_32/lib/clang/10.0.1/
>> >Only file is directory to include, no lib directory whatsoever,
meaning
>> >nothing is being built here..
>> >
>> >
>> >I'm trying with llvm-project-10.0.1
>> >
>> >llvm-project-10.0.1.tar.xz
>> >
>> >
>> >Using:
>> >
>> >cmake -DCMAKE_BUILD_TYPE=Release  -DBENCHMARK_BUILD_32_BITS:BOOL=1
>> >-DLLVM_BUILD_INSTRUMENTED=IR
>>
>-DLLVM_ENABLE_PROJECTS=lld,clang,compiler-rt,clang-tools-extra,libclc
>> >-DLLVM_ENABLE_ZLIB:bool=0  -DLLVM_ENABLE_EH=ON -DLLVM_ENABLE_PIC=ON
>> >-DLLVM_ENABLE_RTTI=ON -DCOMPILER_RT_BUILD_BUILTINS=On
>> >-DCOMPILER_RT_USE_BUILTINS_LIBRARY=On
-DCMAKE_INSTALL_PREFIX=../..//llvm_32
>> >../
>> >
>> >Any idea what I am doing wrong here?
>> >
>> >Thanks
>>
>> ninja clang  does not build some needed runtime libraries.
>> For -fprofile-arcs, `ninja profile`. To install it, `ninja
install-profile`.
>
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