patch 8.0.1437: pkg-config doesn't work with cross compiling commit https://github.com/vim/vim/commit/d6d304298a6b9842164a53e7be386d55d18ce79f Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jan 28 22:48:55 2018 +0100 patch 8.0.1437: pkg-config doesn't work with cross compiling Problem: Pkg-config doesn't work with cross compiling. Solution: Use AC_PATH_TOOL() instead of AC_PATH_PROG(). (James McCoy, closes #2513)