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gl_DISABLE_THREADS placement

From: Thien-Thi Nguyen
Subject: gl_DISABLE_THREADS placement
Date: Sat, 24 Jan 2015 12:16:42 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux)

I understand that adding ‘gl_DISABLE_THREADS’ to configure.ac
causes module ‘threadlib’ (specifically file threadlib.m4) to
generate a configure script that runs as if ‘--disable-threads’
had been included on the command-line.  Is this correct?

My questions are:

- Where to add ‘gl_DISABLE_THREADS’?
  Some light experimentation w/


  seems to yield the desired result, but i wonder if
  i'm missing something (either now or latent).

- Is there any way to get "./configure --help" to output:

   --disable-threads    build without multithread safety (default)

  instead of the current:

   --disable-threads    build without multithread safety

  ?  This would be a (small) hint for the user, i think.

Background: GNU RCS is single-threaded, but until:


there were no reported problems w/ the default-enabled state.

Thien-Thi Nguyen
   GPG key: 4C807502
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