What is c2ffi?
c2ffi is a tool that converts C and C++ header files to JSON. It is mainly used for creating bindings using ffi.
Version Notice
You need to use the correct branch of c2ffi for your version of
LLVM/Clang:
- Anything earlier: unsupported
- 11.0.0: branch
llvm-11.0.0deprecated - 12.0.0: branch
llvm-12.0.0old - 13.0.0: branch
llvm-13.0.0current - 14.0.0: branch
llvm-14.0.0current finally!
Developement will always take place in llvm-X.Y, according to the
appropriate version of LLVM. The master branch has been
removed. Check out the appropriate version for your LLVM.
c2ffi now provides tagged versions as well. To hopefully avoid confusion
these correlate to the appropriate version of LLVM, along with an additional
release number for c2ffi, e.g.:
- v11.1.0.0: For LLVM
11.1.0, c2ffi release 0 - v11.1.0.1: For LLVM
11.1.0, c2ffi release 1
c2ffi
This is a tool for extracting definitions from C, C++, and Objective C headers for use with foreign function call interfaces. For instance:
#define FOO (1 << 2)
const int BAR = FOO + 10;
typedef…Environment
- Ubuntu: groovy
- llvm-11
Install dependencies
sudo apt install llvm-dev libclang-dev libclang-cpp10-dev
sudo apt install checkinstall
Cmake 3.17 or above
The version of cmake distributed by APT is 3.16, and it does not work with c2ffi.
git clone https://github.com/Kitware/CMake
cd CMake
git checkout -b v3.19.2 refs/tags/v3.19.2 # latest version
./bootstrap && make # -j8
sudo checkinstall
Check cmake version.
cmake --version
Build c2ffi
git clone https://github.com/rpav/c2ffi
git checkout -b llvm-11.0.0 refs/remotes/origin/llvm-11.0.0
cd build
cmake .. # -DBUILD_CONFIG=Release
LIBRARY_PATH=/usr/lib/llvm-11/lib/ make # -j8
sudo checkinstall
Check if c2ffi work.
c2ffi
This article is over.
Have a nice day!
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