Ask for helpping to compile compiler-rt, thanks

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#1

Dear Everyone;

I am an engineer that design compile project with LLVM and encounter 64bit Multiplication, division Issues.

I read the LLVM documents and add the compiler-rt library to solve the problem above.

But when I compiler the compiler-rt library, I always encounter compile errors as attachment.

It seems a compiler check error, and many solutions to solve it.

I tried many method but fail until now.

Could you give me some suggestion to solve this issue.

My developing environment is Ubuntu 20.04, LLVM version 10.0.0, Clang version 10.0.0

Thanks a lot .

Best Regards

compiler-rt-error.txt (4.44 KB)

#2

Just compiled compiler-rt OK on Ubuntu 20.04.

cd /home/??/Documents/llvm-project

rm -rf build

mkdir build

cd build

cmake -G Ninja -DLLVM_ENABLE_PROJECTS=“clang;llvm;compiler-rt” -DLLVM_USE_LINKER=lld -DCMAKE_BUILD_TYPE=“Release” -DLLVM_TARGETS_TO_BUILD=X86 -DLLVM_ENABLE_LIBPFM=OFF -DRUN_HAVE_GNU_POSIX_REGEX=0 -DRUN_HAVE_THREAD_SAFETY_ATTRIBUTES=0 -Wno-dev …/llvm &> /home/??/Documents/cmake.log

ninja &> /home/??/Documents/ninja.log

ninja.log ends with

[3790/3791] Linking CXX executable bin/llvm-readobj
[3791/3791] Generating …/…/bin/llvm-readelf

There may be some other aspects that need tweaking but let’s start with the above.

Let’s see your command sequence,

Change ?? as needed.

Neil Nelson