fatify

#! /bin/sh
#
# This script is a part of Cgreen and creates fat versions of
# cgreen-runner and libcgreen.dylib which is necessary if you are
# using e.g. Homebrew/MacPorts gcc which don't have suppport for fat
# binaries built in.
#
# NOTE: This does not work completely automatic for x86_64/M1 since
# Homebrew GCC can only compile for the current architecture.
#
# Since automatically ensuring that both architectures are built is
# currently impossible from a single environment, you have to run this
# script once on each architecture. The script will save the built
# binaries under descriptive names and if it discovers that binaries
# for the other architecture already exists it uses lipo to merge them
# into fat binaries.
#
# At this point there is no way to run this as part of the CMake build
# and install, and since the install target of CMake always rebuilds
# you can't install them except with manual copying.
#
# /thoni56
#
function buildfor() {
    rm -rf build
    make
    cp build/tools/cgreen-runner cgreen-runner.$1
    cp build/src/libcgreen.dylib libcgreen.$1.dylib
}
arch=`arch`
if [ $arch == "arm64" ] ; then
    buildfor arm64
    if [ ! -f libcgreen.x86_64.dylib ] ; then
       echo "You need to run this aldo in an x86_64 environment to create fat binaries."
       exit
    fi
else
    buildfor x86_64
    if [ ! -f libcgreen.arm64.dylib ] ; then
       echo "You need to run this in an arm64 environment to create fat binaries."
       exit
    fi
fi

lipo -create -o cgreen-runner -arch arm64 cgreen-runner.arm64 -arch x86_64 cgreen-runner.x86_64
lipo -create -o libcgreen.dylib -arch arm64 libcgreen.arm64.dylib -arch x86_64 libcgreen.x86_64.dylib

if [ -z "$1" ] ; then
    echo "Fat binaries of cgreen-runner and libcgreen.dylib built:"
    file cgreen-runner libcgreen.dylib
    echo "Install with:"
    echo "    sudo cp cgreen-runner <installpath>/bin/cgreen-runner"
    echo "    sudo cp libcgreen.dylib <installpath>/lib/libcgreen.dylib"
    echo
    echo "If <installpath> is the same for bin and lib, such as '/usr/local',"
    echo "you can give that as an argument and the script will do that for you."
else
    echo "Installing fat 'cgreen-runner' in $1/bin and 'libcgreen.dylib' in $1/lib..."
    sudo cp cgreen-runner $1/bin/cgreen-runner
    sudo cp libcgreen.dylib $1/lib/libcgreen.dylib
fi