These instructions at https://facebook.github.io/watchman/docs/install.html do not work for mac osx:
$ git clone https://github.com/facebook/watchman.git
$ cd watchman
$ git checkout v4.9.0
$ ./autogen.sh
$ ./configure
$ make
$ sudo make install
./autogen.sh...
The error:
pkg-config appears to be missing (not available to autoconf tools)
please install the pkg-config package for your system.
The reason I suspect is that not all the same linux packages are available on a mac. How can I get this working on a mac?