Compile gnuplot on Mac with x11 and wxt. Qt is dropped.

compile_gnuplot_m1_mac.sh

# Homebrew removed the support of adding options while compiling, so there isn't x11 or wx term availble anymore
# Here I'm going to remove the gnuplot installation from homebrew and compile it myslef and then relink

# remove the one from homebrew or this script
if [[ ! -z $(brew list | grep gnuplot) ]]; then
    if [[ ! -z $(brew list --pinned | grep gnuplot) ]]; then
        brew unpin gnuplot
        brew unlink gnuplot
    fi
    brew uninstall gnuplot
fi
# install dependencies, though they are likely installed already
brew install wxwidgets gd libcerf lua pango readline -q

# obtain the lastest tarball from sourceforge
url="https://sourceforge.net/projects/gnuplot/best_release.json"
dl_url=$(curl -s $url | python -m json.tool | grep tar | cut -d'"' -f4 | tail -1)
filename=$(basename $dl_url | cut -d'?' -f1)
dir=$(echo $filename | sed 's/\.tar\.gz//g')
version=$(echo $dir | cut -d'-' -f2)
prefix=$HOMEBREW_CELLAR/gnuplot/$version 

# download and untar
curl -sLOJ $dl_url
tar -zxvf $filename

cd $dir
./configure --prefix=$prefix --without-qt --with-wx=/usr/local/bin --with-x --with-texdir=$prefix/tex
make -j 16 
# on my current system, multithread building often fails with a `permission denied` error
# singlethread compilation works totally fine, not sure why
if [[ $? != 0 ]]; then
    make
fi
make install
brew link gnuplot
# make brew upgrade ignore gnuplot, preventing customized build being overwritten
brew pin gnuplot
cd ..
rm -rf $dir $filename

Got back to Mac ecosystem again. Lots of stutff has changed since 3 years ago, likebrew --diy no longer exists.

Confirmed to work on my M1 MBP running Monterey.