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Re: help2man build race


From: Bernhard Voelker
Subject: Re: help2man build race
Date: Fri, 01 Nov 2013 17:01:27 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130329 Thunderbird/17.0.5

On 11/01/2013 04:42 PM, Pádraig Brady wrote:
> I noticed the following when building just modified md5sum.c just now:
> 
>   CCLD   src/sha1sum
> help2man: can't get `--help' info from man/sha1sum.td/sha1sum
> Try `--no-discard-stderr' if option outputs to stderr
> make[2]: *** [man/sha1sum.1] Error 127
> make[2]: *** Waiting for unfinished jobs....
> make[2]: Leaving directory `/home/padraig/git/coreutils'
> make[1]: *** [all-recursive] Error 1
> make[1]: Leaving directory `/home/padraig/git/coreutils'
> make: *** [all] Error 2
> 
> 127 = failure to find command, [...]

I could reproduce it here:

  $ rm -f src/sha*sum man/sha*sum.1
  $ make -j8
  ...
    CCLD     src/sha1sum
    CCLD     src/sha224sum
    CCLD     src/sha256sum
    GEN      man/sha1sum.1
    CCLD     src/sha512sum
    GEN      man/sha224sum.1
    CCLD     src/sha384sum
    GEN      man/sha256sum.1
  help2man: can't get `--help' info from man/sha1sum.td/sha1sum
  Try `--no-discard-stderr' if option outputs to stderr
  make[2]: *** [man/sha1sum.1] Error 126

Interestingly, I got 126 ...

Well, however, I think it's a simple race: this somehow doesn't look
right to me (man/local.mk), does it?

  man/sha1sum.1:   src/md5sum
  man/sha224sum.1: src/md5sum
  man/sha256sum.1: src/md5sum
  man/sha384sum.1: src/md5sum
  man/sha512sum.1: src/md5sum

Have a nice day,
Berny



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