Compile Clang/LLVM for cross building

README.md

Test with: clang -target arm-none-eabi -mcpu=cortex-m3 --sysroot=~/.env/gcc-arm-none-eabi -c test.c

clang.sh

#!/bin/bash
# Download and compile Clang/LLVM from source

# Exit on any errors
set -e

# Fetch LLVM
mkdir crossllvm
cd crossllvm

git clone http://llvm.org/git/llvm.git

# Fetch Clang
cd llvm/tools
git clone http://llvm.org/git/clang.git
cd ../..

# Fetch runtime
cd llvm/projects
git clone http://llvm.org/git/compiler-rt.git
cd ../..

# Build
mkdir build
cd build
cmake -GNinja -DCMAKE_BUILD_TYPE:STRING=Release ../llvm
ninja

#To install run: sudo ninja install

test.c

int main(int argc, char** argv) {

    while(1);

    return 0;

}