[distcc] More efficient multiple file compiles?

[Benjamin R. Haskell]

On Mon, 27 Apr 2009, Fergus Henderson wrote:

> On Mon, Apr 27, 2009 at 2:20 PM, Tom Holly <hollydt at gmail.com> wrote:
>       I think mainly I just want to know when in the step by step procedure of
>       building/installing/running distcc, does the make -j come into play?
> 
> 
> Use "make -j" (or "pump make -j") when running distcc, after you have 
> already built and installed distcc.
> 

How was 'make -j12 CC=distcc <target>' failing for you?  That should be 
the right invocation, assuming you're not trying to do it before distcc is 
installed.

e.g.:

$ cd /usr/src/linux
$ make -j4 CC=distcc
[...]
  CC      kernel/exec_domain.o
  CC      arch/x86/kernel/io_delay.o
  CC      mm/bootmem.o
  CC      arch/x86/kernel/rtc.o
  CC      arch/x86/kernel/trampoline.o
  CC      mm/filemap.o
  CC      kernel/panic.o
[...]

Notice how it's switching between the kernel/ arch/x86/kernel/ and mm/ 
directories.  That's because the CC steps are being run simultaneously, as 
seen by distccmon-text (at a different point in time):

$ distccmon-text
 31766  Preprocess  buffer.c                    192.168.2.23[0]
 31755  Compile     ipcns_notifier.c            192.168.2.23[1]
 31774  Preprocess  clockevents.c               192.168.2.23[1]
 31781  Compile                                    localhost[2]

-- Ben