Re: compile libukfs/ukfs.ln fails on amd64

[Antti Kantee <pooka%cs.hut.fi@localhost>]

On Tue Jul 29 2008 at 15:43:54 -0600, Greg Oster wrote:
> I think we have a race in here... 
> 
> --- rumpvnode_if.h ---
> sed -n '/#define        O_[A-Z]*        *0x/s/O_/RUMP_O_/gp'     < 
> /u1/builds/bu
> ild238/src/lib/librump/../../sys/rump/../sys/fcntl.h >> rumpdefs.h
> printf "#ifndef __VTYPE_DEFINED\n#define __VTYPE_DEFINED\n"      >> rumpdefs.h
> --- rumpdefs.h ---
> sed -n '/#define NAMEI_/s/NAMEI_/RUMP_NAMEI_/gp'                 < 
> /u1/builds/bu
> ild238/src/lib/librump/../../sys/rump/../sys/namei.h > rumpdefs.h
> --- rumpvnode_if.h ---
> sed -n '/enum vtype.*{/p'                                        < 
> /u1/builds/bu
> ild238/src/lib/librump/../../sys/rump/../sys/vnode.h >> rumpdefs.h
> 
> Unless those rumpdefs.h are different, things are gonna be 
> scrambled...
> 
> I've now done one i386 and one amd64 build where it built fine, and 
> one each where I got "weirdness" in rumpdefs.h....  (both -j 16 
> builds..)

Looks like it.  Hmm, wonder why I've never seen this.  I didn't know
that make could even was allowed to do that.  And indeed if I run
make -j16 dependall, it does it split up the steps like in what you quoted.

Anyway, how do we tell make that it should just execute everything
sequentially?  .WAITs?  I can't test as I can't repeat the problem.

Also, bonus question: why hasn't this been seen before?  That portion
of the Makefile didn't change.

  - antti