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Re: Building a Libtool 2 package with libltdl from 1.5

From: Ludovic Courtès
Subject: Re: Building a Libtool 2 package with libltdl from 1.5
Date: Wed, 03 Dec 2008 00:27:41 +0100
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.3 (gnu/linux)

[Moving to `bug-libtool'.]

address@hidden (Ludovic Courtès) writes:

>> The question now is: will people be able to build tarballs that come
>> with Libtool 2.2 with <ltdl.h> from Libtool 1.5?
> The answer is actually "no", precisely because of this additional line
> in <ltdl.h> (missing from 1.5) [*]:
>   #define lt_preloaded_symbols        lt__PROGRAM__LTX_preloaded_symbols

This was actually reported as bug #106237 in:


AFAICS there's no way to get around this.

To summarize:

  * Packages that come with Libtool 1.5.x can't use <ltdl.h> from
    Libtool 2.2.x, as reported in
    http://lists.gnu.org/archive/html/guile-devel/2008-11/msg00073.html .

  * Packages that come with Libtool 2.2.x can't use <ltdl.h> from
    Libtool 1.5.x.

The latter can be worked around by adding the following above

  # ifndef lt_preloaded_symbols
  #  define lt_preloaded_symbols        lt__PROGRAM__LTX_preloaded_symbols
  # endif

... but then it forces developers to use 2.2.x.

Can someone think of a solution that would allow users/developers to use
whichever version of Libtool/ltdl they want?

Thanks in advance,

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