Re: [9fans] How to add djet500' driver to gs?

[Russ Cox <rsc@swtch.com>]

> I'm currently trying to get my HP Deskjet 500 (/dev/lptr1data) working
> in native Plan 9. Using 'lp -d hpdeskjet file' the printer works
> basically; it takes in a sheet and starts printing.
> But it prints only weird symbols and mishandles newlines etc..
>
> I did a little research and found that there is a 'djet500' driver
> (see /sys/src/cmd/gs/src/gdevdjet.c) available for gs but it is not
> included in the stock gs binary according to the output of  'gs -?'. I
> added the djet500 driver to /sys/src/cmd/gs/mkfile and run 'mk
> fake-make' and then 'mk install' as described in the mkfile.
>
> It builds with no error messages but the output of the freshly
> compiled 'gs -?' still doesn't show the new djet500 driver.
>
> What is the right/working procedure to add drivers to gs?

It looks like the mkfile has a small bug in that
src/plan9.mak, which fake-make works from,
doesn't depend on mkfile itself, so mk didn't regenerate
it after you changed the mkfile.  You can check this
theory by doing

    cd /sys/src/cmd/gs
    grep '^DEVICE_DEVS=' src/plan9.mak | grep djet500

I bet grep will not find anything.

Assuming that's the case, you should be able to
get the driver added by running

    cd /sys/src/cmd/gs
    rm src/plan9.mak   # works around bug
    mk fake-make
    mk install

Good luck.
Russ