/usr/bin/ld: cannot find -lstdc++: No such file or directory

Beginners
1

when I compile llvm, there is an error. The instruction are:

cmake -G Ninja ../llvm  -DLLVM_PARALLEL_COMPILE_JOBS=7 -DLLVM_PARALLEL_LINK_JOBS=1 -DLLVM_BUILD_EXAMPLES=ON -DLLVM_TARGETS_TO_BUILD="X86" -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=ON -DLLVM_CCACHE_BUILD=ON -DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DLLVM_ENABLE_PROJECTS='clang;lldb;lld;mlir;clang-tools-extra;compiler-rt' -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DLLVM_ENABLE_LLD=ON

The error is: /usr/bin/ld: cannot find -lstdc++: No such file or directory

But i have installed libstdc++.

Help me!!!

2

My guess is that clang is failing to pick up the expected gcc toolchain. You can check with clang -v for which order it’s looking in. If that’s the issue then you’ll likely want to add gcc-install-dir=/path/to/gcc to your CMAKE_C[XX]_FLAGS Clang command line argument reference — Clang 19.0.0git documentation. If that’s not the issue then it’s likely just your environment is not set up correctly.

3

Thank you for your help. you are right. My clang version is not suit.