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<h1>Old compilers</h1>
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<h2><span class=
"news-title">Old compilers</span></h2>
<p><span class=news-date">August 5th, 2013 20:00 GMT</span></p>
<div class="news-description">
<div class="description">
<p>
I just sent an email to user list asking if anyone is using old compilers, I'll
repeat it here:
</p>
<blockquote>
<p>
Hello all,
</p>
<p>
There has been some discussion on the development list about dropping all support
for old C++ compilers. This will allow us to remove a lot of workarounds and
simplify the code but before doing so it's a good idea to find out if anyone
is still using them. Using boost with these compilers will cause a compile
error in the config library (you can work round that using a custom configuration,
but it's unlikely you'll be able to get much to work). The currently proposed
versions for removing support are:
</p>
<ul>
<li>
<div>
Digital Mars 8.40 and earlier
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</li>
<li>
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Visual C++ 7.0 and earlier
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GCC 3.2 and earlier
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Intel C++ 5.0 and earlier
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<p>
Which is, I think, a very cautious list. There's also a good chance that we
might want to remove support for Borland C++ 5.x. Is there anyone still using
those compilers?
</p>
<p>
Just to be clear, this doesn't mean we'll be fully supporting all compilers
later than these. Old compilers such as Visual C++ 7.1 and gcc 3.4 won't have
a config error and we won't deliberately remove support, but support will be
patchy. Many libraries (especially new ones) don't support those compilers,
and we also don't have any formal testing for them, so if a new change breaks
something, it might not be noticed.
</p>
<p>
If you are still using compilers which are a little more recent than the ones
listed above, it might still be worth mentioning in case we consider removing
support for them in the future.
</p>
<p>
Thanks in advance for any response,
</p>
<p>
Daniel James
</p>
</blockquote>
<p>
<strong>Update:</strong> I had a few responses, but none were
opposed to this change, so I made it in trunk a little while ago. It should be
included in the next release.
</p>
<p>
There was some concern that we would remove support for later compilers (e.g.
Visual Studio 2008, aka. Visual C++ 9.0). We have no such plans, this change
is only for very old compilers. As always support across Boost libraries is not
uniform, but most library authors do try to support as wide a range of compilers
as is feasible.
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