Rockbox Development > Starting Development and Compiling

More rapid compilation

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hobby16:
Hi,
I'm developping on Sansa Clip V1 and I write my code on a single plugin file myfile.c, which is compiled to myfile.rock.

Is there a way to tell "make" to go compile just myfile.c without scanning for file changes before actually compiling ? That scan is really annoying since it takes about 10s on my PC and is totally unecessary since I KNOW I only change myfile.c and nothing else ?

saratoga:
"make plugins" might work for you.

FWIW though make already does skip basically everything if you just touch one file:


--- Code: ---mike@biosgroup-desktop:~/rockbox/codeclib/clip+$ touch ../apps/plugins/fire.c
mike@biosgroup-desktop:~/rockbox/codeclib/clip+$ time make
CC apps/plugins/fire.c
LD fire.rock

real    0m2.465s
user    0m1.760s
sys     0m1.070s


--- End code ---

Basically, unless you've modified other files, most of the compile time will just be actually compiling and linking that one file.

hobby16:
@saratoga
thank you for your reply.
I can't say that "make" skip is very smart.
The delay when just one file is changed is 7s.
The delay when nothing is changed is 5s.
I know it's the time used to parse for changed files since there is no delay when make compiles a one-file project. That's really annoying when you develop & compile on just one file of the rockbox project !

P.S. in my config, "make plugins" doesn't work ("*** No rule to make target" error) and I doubt it will change things a lot.


--- Quote ---ubuntu@ubuntu-desktop:~/rockbox/build_lua$ time make
CC apps/plugin.c
LD rockbox.elf
OC rockbox.bin
SCRAMBLE rockbox.sansa
Creating rockbox-info.txt

real   0m6.962s
user   0m3.216s
sys   0m3.364s

--- End quote ---


--- Quote ---ubuntu@ubuntu-desktop:~/rockbox/build_lua$ time make
make: Nothing to be done for `all'.

real   0m5.660s
user   0m2.572s
sys   0m2.876s

--- End quote ---

saratoga:

--- Quote from: hobby16 on July 28, 2011, 12:45:15 PM ---P.S. in my config, "make plugins" doesn't work ("*** No rule to make target" error) and I doubt it will change things a lot.

--- End quote ---

Its actually "make rocks".  You can see a complete list of options with "make help".

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