Re: Building cvs emacs on a dual-core machine

[Eric Lilja]

Eric Lilja skrev:
> Eli Zaretskii skrev:
> > > From: Eric Lilja <address@hidden>
> > > Date: Wed, 20 Dec 2006 12:47:13 +0100
> > >
> > > I recently upgraded my computer with a dual-core CPU. I've been 
> > > enjoying nice decreases in compile time in my own projects by 
> > > specifying --jobs=2 when invoking make.
> > >
> > > However, when I tried that with emacs it started compiling, very fast 
> > > with both cores busy, but the build craps out (sorry, no log) after a 
> > > little while.
> >
> > Any such failures are bugs in the Emacs Makefiles, so please be sure
> > to report them with full details, including the build log.
>
> I will. This was with the cvs sources I downloaded yesterday (december 
> 19th). I have been trying a few times since the beginning of november 
> (that's when I got the dual core cpu), neither have been able to build 
> when specifying --jobs=2. I will do a fresh checkout later today and 
> hopefully provided you with the details you need.

Ok, here's where it errors out (same with --jobs=2 and --jobs=4):
gcc -I. -DWIN32_LEAN_AND_MEAN -D_WIN32_WINNT=0x0400 -D_X86_=1 -c 
-mno-cygwin -mtune=pentium4 -O2  -Di386 -D_CRTAPI1
=_cdecl    -o oo-spd/i386/preprep.o preprep.c
gcc -o oo-spd/i386/preprep.exe \
                    -mno-cygwin  oo-spd/i386/preprep.o

Essential Lisp files seem to be missing.  You should either
do `make bootstrap' or create `lisp/abbrev.elc' somehow.

mingw32-make: *** [maybe-bootstrap-SH] Error 255

Yes, sorry, I'm on Windows. This is from a fresh cvs checkout performed 
just now. My previous steps were:
./configure.bat --with-gcc --no-cygwin --no-debug
mingw32-make --jobs=4 bootstrap
You mentioned build log, what else information can I provide to help 
track this problem down?

> > If you didn't try this with the CVS version or with the latest
> > pretest, please do try one of these, because many problems present in
> > Emacs 21.x are already resolved in the latest development code.
> >
> > Thanks in advance.
> >
> > > Maybe because it tries to build something that depends on something 
> > > else that has not been quite finished yet because when multiple jobs 
> > > are specified things doesn't happen in serial anymore?
> >
> > A bug-free Makefile should never cause any such trouble, since all the
> > dependencies are supposed to be spelled out in it, and Make will never
> > start building a file until all its prerequisites are built.
>
> - Eric

- Eric