Find dependencies

Some ports' Makefiles contain line-continuations making it non-trivial to find dependencies etc.

To counter this, use

perl -pe 's/\\\n/ /' {} \;

to remove line-continuations.

Finding in (all) files is a lot easier with textproc/the_silver_searcher. To find all relevant files containing references to mysql as a first filter use

ag --ignore 'pkg-*' --ignore 'distinfo' --ignore 'patch-*' mysql

Silver Searcher will perform a case-insensitive search by default

To find all files requiring MySQL, you could use something like

for file in `ag --ignore 'pkg-*' --ignore 'distinfo' --ignore 'patch-*' -l mysql` ; do
   perl -pe 's/\\\n/ /' $file \
   | grep USE | sed -ne "/mysql/s|^|${file}:|p"
done