textgen: instead of running ImageMagick yourself, output a Makefile rule
for each graphic. Dependencies are passed on the command line.
Makefile: Add rule for 'textgen.mk' which is built by running textgen.
graphics.stamp depends on textgen.mk and all the built graphics files.
Then, each built graphic depends on textgen.mk, ensuring it is made
first. textgen.mk itself depends on textgen config, font, and dehacked.
(Makefile itself also depends on textgen.mk implicitly via include)
This duplicates previous behaviour where changing textgen config remakes
all text graphics, but one Make rule for each, allowing parallel make
with -j instead of the script doing one at a time.
The built IWADs are byte-for-byte identical before and after this patch
series is applied (provided VERSION is set to the same thing of course)
One problem is 'make clean' rebuilds textgen.mk because Make thinks the
Makefile needs it, but then immediately deletes it. Not sure how to fix.
Use git clean -fdx instead, or just don't clean twice in succession.
----
This gives the following improvement in build time (-j1 as control,
built on 4 cores and a large tmpfs so disk speed isn't a factor)
(master)
make -j1 4.83s user 6.77s system 93% cpu 12.444 total
make -j1 4.74s user 6.72s system 93% cpu 12.267 total
make -j1 4.72s user 6.68s system 92% cpu 12.292 total
make -j4 5.72s user 6.77s system 109% cpu 11.414 total
make -j4 5.39s user 6.85s system 107% cpu 11.419 total
make -j4 5.66s user 6.79s system 109% cpu 11.383 total
parallel_textgen
make -j1 4.57s user 6.66s system 92% cpu 12.185 total
make -j1 4.73s user 6.57s system 93% cpu 12.152 total
make -j1 4.60s user 6.72s system 93% cpu 12.152 total
make -j4 5.62s user 7.72s system 262% cpu 5.084 total
make -j4 5.82s user 7.76s system 262% cpu 5.165 total
make -j4 5.79s user 7.73s system 261% cpu 5.161 total
Make DARKROCK look better by removing the duplicate streak introduced
in 2017-03-03T05:34:59Z!kevin@ciinet.org, as well as increasing the
brown/tan to gray pixel ratio.
* Add a switch in the secret exit area to allow backtracking.
* Make ledges in secret route non-damaging and made pit below into 20%
damage slime, allowing jumpers to risk death for a couple shells.
* 10 DM starts.
Use blue as fill color rather than white.
Add oblique style to footer text.
Replace URL with copyright notice.
Removed "Version: " text from version footer.
Use image rather than text to generate "Phase 1" and "Phase 2" words
