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Re: Which way AC_USE_SYSTEM_EXTENSIONS works ?
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From: |
Eric Blake |
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Subject: |
Re: Which way AC_USE_SYSTEM_EXTENSIONS works ? |
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Date: |
Mon, 27 Apr 2009 06:05:00 -0600 |
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According to Konstantin Andreev on 4/27/2009 3:01 AM:
> Could you explain, how the AC_USE_SYSTEM_EXTENSIONS macro works ? It
> looks like the macro blindly defines all known 'extensions' symbols,
> regardless of target system.
Rather, it blindly defines all known extensions symbols that have not also
been proven to cause problems on other platforms.
> However, many applications, say, libnet, python, ImageMagick uses these
> symbols in their development headers.
If the application wants extensions, they probably want all available
extensions. But if you have a case where defining all known extensions
symbols causes a conflict that would not occur if you only defined
platform-appropriate extension symbols, please post a simple test case so
that we can improve the macro.
> I could suppose, that if someone uses 'libnet' for development and
> AC_USE_SYSTEM_EXTENSIONS as part of configuration, he gets incorrect
> 'libnet' headers.
How so?
- --
Don't work too hard, make some time for fun as well!
Eric Blake address@hidden
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