Re: [Openexr-devel] .la and link to basename .so

[Piotr Stanczyk]

Hey, 

Most of that stuff is just pure autoconf, I'll take a closer look at your 2nd 
point and refresh my mind as I seem to remember we did some work on supporting 
custom namespacing.

I would like to know exactly what is failing for you regarding the build; would 
you happen to have the output from the shell or the configure log files. 

Thanks 

- Piotr

________________________________________
From: address@hidden address@hidden on behalf of Charles Flèche address@hidden
Sent: 09 September 2013 14:26
To: address@hidden
Subject: [Openexr-devel] .la and link to basename .so

Hi,

As the ./configure script doesn't allow me to build IlmBase and OpenEXR
on the latest Ubuntu, I'm taking a look at improving the current CMake
files. Here are a couple of questions about the build :

1. the build process yields a few .la files : libHalf.la, libIex.la,
etc... My understanding is that these .la files are legacy files from
libtool to help linking, but this mechanism should be replaced by proper
package-config .pc files. As OpenEXR already build valid .pc files, are
these .la files still useful ?

https://blog.flameeyes.eu/2008/04/what-about-those-la-files

2. taking libIex :
   libIex-2_0.so.10 -> libIex-2_0.so.10.0.1
   libIex-2_0.so.10.0.1
   libIex.a
   libIex.la
   libIex.so -> libIex-2_0.so.10.0.1

Now I get that renaming libIex.so to libIex-2_0.so is probably to avoid
symbol collisions while linking two versions of OpenEXR from the same
process. However, I don't understand the libIex.so ->
libIex-2_0.so.10.0.1 symbolic link. Why renaming libIex-2_0 to libIex ?
Is it to avoid modifying the build systems of the applications linking
against OpenEXR ? Why not :
   libIex-2_0.so.10 -> libIex-2_0.so.10.0.1
   libIex-2_0.so.10.0.1
   libIex-2_0.a
   libIex-2_0.la
   libIex-2_0.so -> libIex-2_0.so.10.0.1

I probably miss something, there...

Many thanks,

Charles

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