Cheerp: A C++ compiler for the Web

This is the repository for the llvm + clang components of the Cheerp compiler.

Useful links

Documentation and Tutorials: https://docs.leaningtech.com/cheerp/

Please report bugs on the cheerp-meta repository: https://github.com/leaningtech/cheerp-meta/issues

Developers chat on gitter: https://gitter.im/leaningtech/cheerp

Or ask questions on stackoverflow: https://stackoverflow.com/questions/ask?tags=cheerp

Cheerp compiler build instructions

We advise doing an out of tree build, but it's not necessary

This is only one of the components of Cheerp. Please see https://docs.leaningtech.com/cheerp/Linux-build-instructions for instructions on how to build the whole suite.

Build LLVM

cmake -S llvm -B build -C llvm/CheerpCmakeConf.cmake -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_PROJECTS=clang -G Ninja
ninja -C build
ninja -C build install

For development, consider to add the following option:

-DCMAKE_CXX_FLAGS_RELEASE="-DNDEBUG"

External components

Build utils

Go check the README.md of https://github.com/leaningtech/cheerp-utils

Build newlib

Go check the README.md of https://github.com/leaningtech/cheerp-newlib

Build libcxx and libcxxabi

cmake -S runtimes -B build_runtimes_genericjs -GNinja -C runtimes/CheerpCmakeConf.cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_COMPILER_TARGET="cheerp"
ninja -C build_runtimes_genericjs
sudo ninja -C build_runtimes_genericjs install

cmake -S runtimes -B build_runtimes_wasm -GNinja -C runtimes/CheerpCmakeConf.cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_CXX_COMPILER_TARGET="cheerp-wasm"
ninja -C build_runtimes_wasm
sudo ninja -C build_runtimes_wasm install

Build libs

Go check the README.md of https://github.com/leaningtech/cheerp-libs