hacking.md

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Compiler sources are on Github: github.com/llvm-fortran/fort.

Building Fort together with LLVM

1. Get required tools
   • C/C++ compiler, see LLVM System Requirements
   • CMake for builds, get it at cmake.org/download
   • Python for running tests, get it at python.org/download
   • make is assumed to be present, but you can use other CMake generators
2. Get LLVM
   • git clone https://github.com/llvm-mirror/llvm.git
3. Checkout Fort inside of LLVM source tree
   • cd llvm/tools
   • git clone https://github.com/llvm-fortran/fort.git
4. Build
   • mkdir build (in-source builds are not supported)
   • cd build
   • cmake ../llvm
   • make

Building Fort outside of LLVM source tree

1. Get, build, and install LLVM from source
2. Get Fort
   • git clone https://github.com/llvm-fortran/fort.git
3. Build
   • Make sure that bin subdirectory of LLVM installation is on the PATH
   • mkdir build
   • cd build
   • cmake ../fort
   • make