//===----------------------------------------------------------------------===// // Fortran Language Family Front-end //===----------------------------------------------------------------------===// flang: n. 1. A miner's two-pointed pick. Flang is a Fortran front-end. //===----------------------------------------------------------------------===// // Compiling Flang (master branch) //===----------------------------------------------------------------------===// Download LLVM source and move to a branch with a reference known to work with Flang. > git clone https://github.com/llvm-mirror/llvm.git > cd llvm > git clone http://llvm.org/git/llvm.git Download the Flang source code within the LLVM tree, the two will be compiled together. > cd llvm/tools & git clone git://github.com/llvm-flang/flang.git Compile LLVM and Flang together. > mkdir build > cd build & cmake ../ -DCMAKE_INSTALL_PREFIX=/usr > cd build & make > cd build & make install You will also need to install the Flang standard library, which the Flang compiler links to by default. This is built outside the LLVM tree. > git clone git://github.com/llvm-flang/libflangrt.git > cd libflangrt > mkdir build > cd build & cmake ../ -DCMAKE_INSTALL_PREFIX=/usr > cd build & make > cd build & make install //===----------------------------------------------------------------------===// // Using flang //===----------------------------------------------------------------------===// Flang's driver will instruct the linker to link with the libflang runtime. You can get libflang at https://github.com/llvm-flang/libflangrt . Once you have libflang, you'll need to tell flang where it is - you can use the -L option (e.g. -L~/libflang). //===----------------------------------------------------------------------===// // To Do List //===----------------------------------------------------------------------===// Short term: * Fix lexing bugs - Fixed form for numerical literals (i.e. ignore whitespace) - Continuations in BOZ literals - Others * 'INCLUDE' which search for files in the directory of the current file first. * Full parsing of statements Long term: * Flang driver (?) * Parsing GNU modules * Add (or hoist) Clang style TargetInfo class template Longer term: * Fortran90/95 support * IO support.