Mac M4 EXP install script

mac-build.sh

# run a full compile of exp - see notes in other files
# originally sent by Mike P on Slack, modified by APW
# APW ran with uv to manage Python - in the EXPDIR:
# uv venv --python 3.12
# source .venv/bin/activate

# expui/CMakeLists.txt
# pyEXP/CMakeLists.txt
# both need to comment out these lines:
#    target_compile_options(pyEXP PUBLIC ${OpenMP_CXX_FLAGS})
# to avoid a -fopenmp -Xclang error (pls sort this sometime)

# Make sure to install the dependencies with homebrew:
# brew install fftw gsl open-mpi hdf5 libomp libpng eigen

export HOMEDIR=/Users/aprice-whelan/
export EXPDIR=${HOMEDIR}/projects/exp
mkdir -p ${EXPDIR}/build
cd ${EXPDIR}/build

# This is a safer way to get the path to the python executable that works even within a
# virtual environment:
export PYTHON_BASE=$(python -c "import sys; print(sys.base_prefix)")
export PYTHON_EXEC=${PYTHON_BASE}/bin/python3.12
export PYTHON_LIBRARY=${PYTHON_BASE}/lib/libpython3.12.dylib
echo "Using Python at: ${PYTHON_BASE}"

export BREWHOME=/opt/homebrew/Cellar/
export FFTW3_HOME=${BREWHOME}/fftw/3.3.10_2/
export GSL_HOME=${BREWHOME}/gsl/2.8
export MPI_HOME=${BREWHOME}/open-mpi/5.0.7/
export HDF5_HOME=${BREWHOME}/hdf5/1.14.6/
#export OMP_HOME=${BREWHOME}/libomp/19.1.5/
export OMP_HOME=${BREWHOME}/libomp/20.1.2/
export PNG_HOME=${BREWHOME}/libpng/1.6.47/

# should add a diagnostic here to make sure everyone is the correct path!

export PATH=${HOMEDIR}/bin/:/opt/homebrew/bin:/opt/homebrew/sbin:${MPI_HOME}/bin:${GSL_HOME}/bin:${FFTW3_HOME}/bin:${HDF5_HOME}/bin:$PATH
# OMP CANNOT be added here for some reason. It is fine to pass along as part of the compile flags
export LD_LIBRARY_PATH=${HOMEDIR}/lib/:${MPI_HOME}/lib:${GSL_HOME}/lib:${FFTW3_HOME}/lib:${HDF5_HOME}/lib:${PNG_HOME}/lib:$LD_LIBRARY_PATH
export INCLUDE=${HOMEDIR}/include/:${MPI_HOME}/include:${GSL_HOME}/include:${FFTW3_HOME}/include:${HDF5_HOME}/include:${PNG_HOME}/include:$INCLUDE
export LDFLAGS="-L${OMP_HOME}lib"
export CPPFLAGS="-I${OMP_HOME}include"

cmake -DMPI_ROOT=${MPI_HOME} -DCMAKE_C_COMPILER=${MPI_HOME}bin/mpicc -DCMAKE_CXX_COMPILER=${MPI_HOME}bin/mpicxx -DHDF5_ROOT=${HDF5_HOME} -DENABLE_NBODY=on -DENABLE_USER=on -DENABLE_PYEXP=on -DCMAKE_INSTALL_PREFIX=${BREWHOME} -DPYTHON_EXECUTABLE=${PYTHON_EXEC} -DPYTHON_LIBRARY=${PYTHON_LIBRARY} -DOpenMP_CXX_INCLUDE_DIR=/opt/homebrew/opt/libomp/include -DOpenMP_C_INCLUDE_DIR=/opt/homebrew/opt/libomp/include ..

make -j 8
make install

install_name_tool -add_rpath ${BREWHOME}lib ${BREWHOME}bin/exp
install_name_tool -add_rpath ${BREWHOME}lib ${BREWHOME}bin/cylcache
# add more here...?

# Add the pyEXP dir as a pyEXP.pth file in site-packages:
echo ${EXPDIR}/build/pyEXP/pyEXP.cpython-312-darwin.so > ${PYTHON_BASE}/lib/python3.12/site-packages/pyEXP.pth