- Install Emscripten: Ensure you have Emscripten installed and set up on your system. You can download and install it from the official Emscripten website.
- Clone the llvm-project from LLVM Repository.
- Install Ninja
sudo install Ninja
-
Create Build Directory:
- Before configuring LLVM/Clang, create a build directory named
build.emscripten:mkdir build.emscripten
- Before configuring LLVM/Clang, create a build directory named
-
Configure LLVM/Clang with Emscripten:
- Run the following command to configure LLVM/Clang with Emscripten:
emcmake cmake -S llvm -B build.emscripten -G Ninja -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_PROJECTS='llvm;clang;clang-tools-extra' -DCMAKE_EXPORT_COMPILE_COMMANDS=on -DCMAKE_LINKER="/mnt/d/emscripten/emsdk/upstream/bin/lld" -DLLVM_TARGET_TRIPLE="wasm32-unknown-emscripten"
- Run the following command to configure LLVM/Clang with Emscripten:
-
Build LLVM/Clang with Emscripten:
- Run the following command to build LLVM/Clang with Emscripten:
cmake --build build.emscripten --target libclang
- Run the following command to build LLVM/Clang with Emscripten:
-
Extract
libclang.a:- After the build process is complete, extract
libclang.afrom the LLVM/Clang build directory:ar x build.emscripten/lib/libclang.a
- After the build process is complete, extract
-
Compile
libclang.atolibclang.wasm:- Change to the lib directory and use Emscripten's
emcccompiler to compilelibclang.ato WebAssembly:cd build.emscripten/lib emcc -o libclang.wasm *.o --no-entry
- Change to the lib directory and use Emscripten's
-
Locate
libclang.wasm:- After compiling, you can find the resulting
libclang.wasmfile in thebuild.emscripten/libdirectory.
- After compiling, you can find the resulting
- Be sure to check the Emscripten documentation for any specific configuration options or considerations when compiling C/C++ code to WebAssembly.
- Experiment with different build configurations and options to optimize performance and compatibility for your specific use case.
Directory: D:\llvm-project\clang\tools\libclang
Mode File Name
---- ------------- ------ ----
-a---- ARCMigrate.cpp
-a---- BuildSystem.cpp
-a---- CIndex.cpp
-a---- CIndexCodeCompletion.cpp
-a---- CIndexCXX.cpp
...
...
-a---- CXType.cpp
-a---- CXType.h
-a---- FatalErrorHandler.cpp
-a---- Indexing.cpp
-a---- Index_Internal.h
-a---- libclang.map
-a---- linker-script-to-export-list.py
-a---- Rewrite.cpp
---- ------------- ------ ----
Directory: D:\llvm-project\clang\tools\libclang
Mode File Name
---- ------------- ------ ----
-a---- ARCMigrate.cpp.o
-a---- BuildSystem.cpp.o
-a---- CIndex.cpp.o
-a---- CIndexCodeCompletion.cpp.o
-a---- CIndexCXX.cpp.o
...
...
-a---- CXType.cpp.o
-a---- CXType.h.o
-a---- FatalErrorHandler.cpp.o
-a---- Indexing.cpp.o
-a---- Index_Internal.h.o
-a---- libclang.map.o
-a---- linker-script-to-export-list.py.o
-a---- Rewrite.cpp.o
---- ------------- ------ ----