#!/bin/sh

python3 --version >/dev/null|| echo "Install python3" && exit 1
pdftex --version >/dev/null|| echo "Install pdftex (TeXLive)" && exit 1
make -v >/dev/null || echo "Install make" && exit 1
python -c "import numpy" >/dev/null || echo "Install numpy" && exit 1
python -c "import scipy" >/dev/null || echo "Install scipy" && exit 1
python -c "import matplotlib" >/dev/null || echo "Install matplotlib" && exit 1
gs --version >/dev/null || echo "Ghostscript not installed (no PNG poster)"

cp Makefile.orig Makefile
for tgt in */document.tex; do
    DIR=$(dirname $tgt)
    ( echo -en "\n${DIR}/document.pdf: ${DIR}/document.tex "; find $DIR \!\
 -type d \! -name "document.tex" -a -name "*.tex" -exec echo {} +; ) >> Makefile
    echo -e "\noutputs/${DIR}.pdf: ${DIR}/document.pdf outputs\n\tcp -f $< \$@"\
    >> Makefile
done