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Guillaume Gomez 2022-10-18 17:29:15 +02:00
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@ -21,8 +21,8 @@ You can also use my [fork of gcc](https://github.com/antoyo/gcc) which already i
To build it (most of these instructions come from [here](https://gcc.gnu.org/onlinedocs/jit/internals/index.html), so don't hesitate to take a look there if you encounter an issue):
```bash
$ git clone https://github.com/antoyo/gcc
$ cd gcc
$ ./contrib/download_prerequisites
$ sudo apt install flex libmpfr-dev libgmp-dev libmpc3 libmpc-dev
$ ./configure \
--enable-host-shared \
@ -31,23 +31,33 @@ $ ./configure \
--enable-checking=release \
--prefix=$(pwd)/install \
--disable-multilib
$ make -j4 # You can replace `4` with another number depending on how many cores you have.
$ cd ..
```
**Put the path to your custom build of libgccjit in the file `gcc_path`.**
```bash
$ git clone https://github.com/rust-lang/rustc_codegen_gcc.git
$ cd rustc_codegen_gcc
$ dirname $(readlink -f `find . -name libgccjit.so`) > gcc_path
```
You can set also set RUST_COMPILER_RT_ROOT:
```bash
$ git clone https://github.com/llvm/llvm-project llvm --depth 1 --single-branch
$ export RUST_COMPILER_RT_ROOT="$PWD/llvm/compiler-rt"
$ ./prepare_build.sh # download and patch sysroot src
$ ./build.sh --release
```
Then you can run commands like this:
```bash
$ ./prepare.sh # download and patch sysroot src and install hyperfine for benchmarking
$ LIBRARY_PATH=$(cat gcc_path) LD_LIBRARY_PATH=$(cat gcc_path) ./build.sh --release
```
To run the tests:
```bash
$ ./prepare.sh # download and patch sysroot src and install hyperfine for benchmarking
$ ./test.sh --release
```