sed -i command for in-place editing to work with both GNU sed and BSD/OSX

Question

I\'ve got a makefile (developed for gmake on Linux) that I\'m attempting to port to MacOS, but it seems like sed doesn\'t want to cooperate. What I

Answer 1

This isn't quite an answer to the question, but one can get linux-equivalent behavior through

brew install gnu-sed

# Add to .bashrc / .zshrc
export PATH="/usr/local/opt/gnu-sed/libexec/gnubin:$PATH"

(previously there was a --with-default-names option to brew install gnu-sed but that has recently been removed)