RIOT: auto execute LFC on build

[LasseRosenow]

This adds the lfc command to riot.mk and also moves more configuration over from the lingo template.

For more info see: lf-lang/lf-riot-uc-template#1

[github-actions]

Benchmark results after merging this PR:

Benchmark results

Performance:

PingPongUc:
Best Time: 166.182 msec
Worst Time: 177.775 msec
Median Time: 172.270 msec

PingPongC:
Best Time: 168.904 msec
Worst Time: 169.313 msec
Median Time: 168.586 msec

ReactionLatencyUc:
Best latency: 41147 nsec
Median latency: 59760 nsec
Worst latency: 93663 nsec

ReactionLatencyC:
Best latency: 21085 nsec
Median latency: 59730 nsec
Worst latency: 96243 nsec

Memory usage:

PingPongUc:
text data bss dec hex filename
39564 752 8496 48812 beac bin/PingPongUc

PingPongC:
text data bss dec hex filename
46044 872 360 47276 b8ac bin/PingPongC

ReactionLatencyUc:
text data bss dec hex filename
29689 736 2112 32537 7f19 bin/ReactionLatencyUc

ReactionLatencyC:
text data bss dec hex filename
41666 840 360 42866 a772 bin/ReactionLatencyC

[github-actions]

Memory usage after merging this PR will be:

Memory Report

action_empty_test_c

	from	to	increase (%)
text	59715	59715	0.00
data	744	744	0.00
bss	10112	10112	0.00
total	70571	70571	0.00

action_microstep_test_c

	from	to	increase (%)
text	60586	60586	0.00
data	752	752	0.00
bss	10112	10112	0.00
total	71450	71450	0.00

action_overwrite_test_c

	from	to	increase (%)
text	60423	60423	0.00
data	744	744	0.00
bss	10112	10112	0.00
total	71279	71279	0.00

action_test_c

	from	to	increase (%)
text	60327	60327	0.00
data	752	752	0.00
bss	10112	10112	0.00
total	71191	71191	0.00

deadline_test_c

	from	to	increase (%)
text	55913	55913	0.00
data	760	760	0.00
bss	10784	10784	0.00
total	67457	67457	0.00

delayed_conn_test_c

	from	to	increase (%)
text	61342	61342	0.00
data	744	744	0.00
bss	10112	10112	0.00
total	72198	72198	0.00

event_payload_pool_test_c

	from	to	increase (%)
text	18330	18330	0.00
data	624	624	0.00
bss	320	320	0.00
total	19274	19274	0.00

event_queue_test_c

	from	to	increase (%)
text	27597	27597	0.00
data	736	736	0.00
bss	480	480	0.00
total	28813	28813	0.00

nanopb_test_c

	from	to	increase (%)
text	42888	42888	0.00
data	904	904	0.00
bss	320	320	0.00
total	44112	44112	0.00

port_test_c

	from	to	increase (%)
text	61290	61290	0.00
data	744	744	0.00
bss	10112	10112	0.00
total	72146	72146	0.00

reaction_queue_test_c

	from	to	increase (%)
text	27319	27319	0.00
data	736	736	0.00
bss	480	480	0.00
total	28535	28535	0.00

request_shutdown_test_c

	from	to	increase (%)
text	60558	60558	0.00
data	744	744	0.00
bss	10112	10112	0.00
total	71414	71414	0.00

startup_test_c

	from	to	increase (%)
text	55612	55612	0.00
data	752	752	0.00
bss	10784	10784	0.00
total	67148	67148	0.00

tcp_channel_test_c

	from	to	increase (%)
text	93837	93837	0.00
data	1224	1224	0.00
bss	21280	21280	0.00
total	116341	116341	0.00

timer_test_c

	from	to	increase (%)
text	55503	55503	0.00
data	744	744	0.00
bss	10784	10784	0.00
total	67031	67031	0.00

[LasseRosenow]

@erlingrj Ready for review again :)

[LasseRosenow]

Integrating the LFC into the make file is really nice! Now we don't need to handle _LF examples different from c-code based examples anymore!

[erlingrj]

This looks good. Just a few minor comments. I will let you merge it when you've seen them

[erlingrj]

Just for my own understanding, what does this syntax here achieve? Will the command be invoked before any target is run?

[LasseRosenow]

This is a small hack, it copies the output of the shell script over to the variable in this case underscore. This way the evaluation of the makefile is blocked until the script is finished ;)

[erlingrj]

That's very clever!

[erlingrj]

An unfortunate detail about lfc is that where the generated-code is put is a little complicated:

1. ~/src/Hello.lf -> ~/src-gen/Hello
2. ~/Hello.lf -> ~/src-gen/Hello
3. ~/src/lib/Hello.lf -> `~/src-gen/lib/Hello

I think we should ignore (2) where it is not in a src directory, for our template we say that the LF files must reside under a src directory. But for (3) to work, LF_MAIN must be set to lib/Hello, which might actually be reasonable

[LasseRosenow]

Aaahh that is good to know, I will think about a good solution

[github-actions]

Coverage after merging riot-auto-execute-lfc-on-build into main will be

71.23%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
src
action.c	77.69%	65.63%	100%	81.18%	134–135, 24, 42–45, 48, 50–51, 54–56, 62–63, 70–72, 72, 72–75, 81–82, 93–94
builtin_triggers.c	90.91%	70%	100%	96.77%	14, 18, 40, 43
connection.c	78.52%	51.16%	100%	88.66%	10, 104, 11, 110, 123–124, 136–137, 14, 14, 143, 145, 16–17, 21–22, 22, 22–23, 25, 27–28, 33, 48, 48, 48–49, 55, 60–62, 97
environment.c	78.35%	55.56%	84.62%	83.33%	12–13, 18, 20–21, 31, 35–36, 42–43, 51–52, 55–56, 60–61, 93–95
event.c	95.35%	92.86%	100%	96.15%	14–15
federated.c	5.61%	2.97%	7.69%	6.76%	101, 104–105, 105, 105–106, 108–109, 11, 111, 115–116, 118–120, 123, 125–129, 13, 13, 13, 130, 132–134, 137–139, 139, 139, 14, 140, 140, 140–142, 144, 147–148, 15, 150–154, 156–159, 16, 160–161, 163, 163, 163–166, 168, 168, 168–169, 17, 17, 17, 170, 170, 170–171, 175–176, 176, 176, 179–180, 184–186, 188, 188, 188, 190–194, 197, 197, 197–199, 20, 200, 203–204, 204, 204–205, 207–208, 21, 211–212, 217–218, 218, 218–219, 22, 22, 22, 221, 223, 223, 223–226, 226, 226, 226, 226–229, 23, 230–238, 24, 24, 24, 242, 245, 245, 245–247, 25, 251, 254–255, 255, 255, 255–259, 26, 260–263, 265, 27, 27, 27, 271–273, 28, 28, 28, 28, 28, 285–286, 289, 29, 290–292, 294, 294, 294–295, 299–300, 300, 300, 302, 304–305, 305, 305–306, 306, 306–307, 307, 307–308, 308, 308–309, 309, 309, 31, 310, 310, 310, 312, 312, 312–313, 313, 313–314, 314, 314–315, 315, 315, 317, 34, 34, 34, 34, 34–35, 38, 42–43, 45–48, 50, 50, 50–51, 51, 51, 53, 53, 53–55, 55, 55–57, 61–62, 66–67, 69–72, 74, 76, 76, 76–77, 77, 77–78, 78, 78–79, 79, 79, 82–83, 85–88, 9, 90, 90, 90–93, 95, 97, 97, 97–98
logging.c	87.50%	80%	100%	88.64%	24, 37–39, 46, 59–60
network_channel.c	57.69%	50%	100%	58.82%	36, 36, 36, 36, 41–44, 49–50, 53
port.c	78.08%	45.83%	100%	93.33%	10, 10, 10, 16, 20, 25, 25–27, 27, 27–28, 39, 39, 39–40
queues.c	89.94%	80.36%	100%	94.06%	108, 113, 119, 21–23, 47–48, 60–61, 84–88, 91–92
reaction.c	70.34%	54.55%	100%	78.26%	15, 17, 21–22, 28–31, 31, 31–32, 42, 45, 47, 52–53, 53, 53–55, 55, 55–56, 73, 89–91, 91, 91–94, 94, 94–95
reactor.c	69.33%	51.52%	100%	82.28%	10, 101–102, 14–19, 22, 28, 30, 32–37, 37, 37–38, 38, 38, 43, 55, 58–59, 59, 59–60, 60, 60–61, 63, 77–78, 81–82, 82, 82–83, 83, 83–84, 86, 91
serialization.c	50%	50%	50%	50%	16–17, 26–27, 33–35, 38–40
tag.c	40.19%	31.48%	60%	47.92%	14, 14–15, 17, 17–18, 23–24, 24, 24, 24, 24–25, 27, 27, 27, 27, 27–28, 30, 30, 30–31, 33–34, 34, 34–35, 37, 37, 37, 37, 37–38, 40, 40, 40, 40, 40–41, 43, 53–54, 63, 63–64, 83–85, 85, 85, 85, 85, 85, 85, 85, 85, 85, 85–87, 89
timer.c	95%	66.67%	100%	100%	14, 25
trigger.c	100%	100%	100%	100%
util.c	0%	0%	0%	0%	10, 3–4, 4, 4–5, 5, 5–6, 8–9
src/platform/posix
posix.c	52.73%	30%	66.67%	56%	100, 100, 100–102, 106, 16, 18, 20–21, 34–36, 38–40, 48–49, 54–59, 59, 59–62, 62, 62–64, 67, 73–74, 78, 81, 92–94, 94, 94–96, 98–99
tcp_ip_channel.c	66.54%	51.61%	100%	76.16%	101, 103, 106–107, 117–118, 118, 118–119, 124–125, 125, 125–127, 131–132, 132, 132–134, 148, 154, 154, 154, 154, 154–155, 155, 155–156, 158, 158, 158–159, 168, 175–176, 180, 184, 184, 184–186, 186, 186–187, 189, 189, 189–191, 195, 195, 195–196, 216, 229–230, 230, 230–231, 237, 242–243, 243, 243–244, 244, 244–245, 247–248, 248, 248–249, 249, 249, 251–254, 264, 264–265, 265, 265–266, 290–291, 291, 291–293, 293, 293–294, 294, 294–295, 304, 304, 309, 311, 313, 315, 327–328,