.. _AppleMacOS:

Building Apple MacOS
====================

Install homebrew
----------------
Taken from the [homebrew website](https://brew.sh)
.. code-block::

  /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
  (echo; echo 'eval "$(/opt/homebrew/bin/brew shellenv)"') >> ~/.zprofile
  
  note: this is the command for `zsh`. Other shells will require different commands. Homebrew should provide the correct command after install is complete.
  eval "$(/opt/homebrew/bin/brew shellenv)"

Install packages using homebrew
-------------------------------

.. code-block::

  brew install bison cmake gfortran git-lfs open-mpi lapack python3 ninja m4
  echo 'export PATH="/opt/homebrew/opt/bison/bin:$PATH"' >> ~/.zshrc
  echo 'export PATH="/opt/homebrew/opt/m4/bin:$PATH"' >> ~/.zshrc
  git lfs install

Clone GEOS
----------

.. code-block::

  git clone git@github.com:GEOS-DEV/GEOS.git
  cd GEOS
  git submodule init
  git submodule update
  cd ..

Clone thirdPartyLibs
--------------------

.. code-block::

  git clone git@github.com:GEOS-DEV/thirdPartyLibs.git
  cd thirdPartyLibs
  git submodule init 
  git submodule update
  git lfs pull


Configure and build thirdPartyLibs
----------------------------------

.. code-block::

  python3 scripts/config-build.py -hc ../GEOS/host-configs/apple/macOS_arm.cmake -bt Release

You will get a warning you can ignore

.. code-block::

  CMake Warning at /Users/settgast1/Codes/geos/GEOS/host-configs/tpls.cmake:10 (message):
    'GEOS_TPL_DIR' does not exist.


Continue with the build

.. code-block::

  cd build-macOS_arm-release
  make

You will get an error at the end...you can ignore it.

.. code-block::

  [100%] Linking CXX executable ../../../tests/blt_mpi_smoke
  ld: warning: -commons use_dylibs is no longer supported, using error treatment instead
  ld: file not found: @rpath/libquadmath.0.dylib for architecture arm64
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  make[2]: *** [tests/blt_mpi_smoke] Error 1
  make[1]: *** [blt/tests/smoke/CMakeFiles/blt_mpi_smoke.dir/all] Error 2
  make: *** [all] Error 2


Build GEOS
----------

.. code-block::

  cd ../../GEOS
  python3 scripts/config-build.py -hc host-configs/apple/macOS_arm.cmake -bt Release --ninja
  cd build-macOS_arm-release
  ninja geosx