Cheerp: A C++ compiler for the Web
This directory and its sub-directories contain the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.
Useful links
Documentation and tutorials: https://labs.leaningtech.com/cheerp
Please report bugs on the cheerp-meta repository: https://github.com/leaningtech/cheerp-meta/issues
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 -DCLANG_ENABLE_OPAQUE_POINTERS=OFF -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 musl
Go check the README.md of https://github.com/leaningtech/cheerp-musl
Build libcxx and libcxxabi
cmake -S runtimes -B build_runtimes_genericjs -GNinja -C runtimes/CheerpCmakeConf.cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE="/opt/cheerp/share/cmake/Modules/CheerpToolchain.cmake"
ninja -C build_runtimes_genericjs
cmake -S runtimes -B build_runtimes_wasm -GNinja -C runtimes/CheerpCmakeConf.cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE="/opt/cheerp/share/cmake/Modules/CheerpWasmToolchain.cmake"
ninja -C build_runtimes_wasm
ninja -C build_runtimes_genericjs install
ninja -C build_runtimes_wasm install
Build libs
Go check the README.md of https://github.com/leaningtech/cheerp-libs