mostly successful build of gforth 0.7.9 on an m2 mac

I posted this on Reddit and was reminded that I should post here.
Hopefully of use to others.

I'm leaving this here in case it helps anyone else. The instructions
at [gforth.org](http://gforth.org) are mostly correct. Here's what I
did that works:

Using brew install:

* automake
* cmake
* coreutils
* gawk
* gnu-getopt
* gnu-sed
* gcc (gcc@14, see below)
* sdl2
* swig
* texinfo
* sdl2
* mactex
* xquartz
* mesa

Swig, TeX, quartz, and friends, will all be picked up by the
`install-deps.sh` script if you miss those.

To make sure that the gnu tools are found I added the following to my `.zshrc`:

```
# insert gnu tools
if type brew &>/dev/null; then
  HOMEBREW_PREFIX=$(brew --prefix)
  # gnubin; gnuman
  for d in ${HOMEBREW_PREFIX}/opt/*/libexec/gnubin; do export
PATH=$d:$PATH; done
  for d in ${HOMEBREW_PREFIX}/opt/*/libexec/gnuman; do export
MANPATH=$d:$MANPATH; done
fi
```

Because of [PATCH Fix signatures for
getenv/getopt](https://lists.gnu.org/archive/html/bug-make/2025-03/msg00032.html)
I installed `gcc@14`.

Add CC=gcc-14 on `make`.

Installing to system directories with `sudo make install` was a mess.
Apple has botched up permissions and access. I installed to a local
prefix `$HOME\.local` and the install looks correct when I compare it
to a brew install of gforth 0.7.3.

When starting gforth the `gforth.fi` file is not found, and even
though I had specified a prefix on the install, gforth is looking in
the system directories under `/usr/local`.

The gforth manual seems to say that I should set `GFORTHPATH` to my
`$HOME/.local/share/gforth/0.7.9...` but this doesn't work.
`$HOME/.local/lib/gforth/0.7.9...` does.

Cheers