race condition with paralel make

[Stepan Kasal]

Hello,

Akim has noticed a problem in texinfo/info/Makefile.am:
>  > $(generated_sources): makedoc$(EXEEXT) $(cmd_sources)
>  >         rm -f $(generated_sources)
>  >         $(top_builddir)/$(native_tools)/info/makedoc $(cmd_sources)
> 
> Warning: Read the node `Multiple Outputs' in Automake.texi.

I've read the node and I think that the problem will be solved by
merely adding the following:

------
# We need a linear ordering to prevent race condition in parallel make.
# See the node ``(automake)Multiple Outputs'' for an explanation.
doc.c: key.c
key.c: funs.h
------

A patch is attached.  It adds these four lines and moves some parts of
info/Makefile.am, so that the code concerning the generated sources is
at the end of the file.

Thank you, Akim.

Regards,
        Stepan

texinfo-20041022-built_parallel.patch
Description: Text document