How to install facebook watchman on ubuntu?

You need to install each of the missing packages.

For example on ubuntu:

$ sudo apt-get install automake  <=== contains autoheader, ...
$ sudo apt-get install autoconf

If you wind up with a bunch of errors like AC_* undefined, then you may need a more up-to-date version of automake. You can download the source from the gnu repo ... see: https://www.gnu.org/software/automake/

If getting following error on $ ./autogen.sh

$ ./autogen.sh
./autogen.sh: 9: ./autogen.sh: aclocal: not found
./autogen.sh: 10: ./autogen.sh: autoheader: not found
./autogen.sh: 11: ./autogen.sh: automake: not found
./autogen.sh: 12: ./autogen.sh: autoconf: not found

You’ll need to install automake && autoconf.

As i did the following:

sudo apt-get install automake autoconf

Then proceed with the steps for ./autogen.sh, etc.