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programming and portability
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Tim Larson
Jul 28, 2008, 4:11:47 PM7/28/08
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How does one deal with _POSIX_SOURCE and _BSD_SOURCE, specifically in
sys/wait.h? I've got some code that assumes the BSD-style union wait if
UNION_WAIT is defined (it doesn't appear to be) but otherwise an int.
Somehow, this int apparently is being passed to the BSD-style macros
(e.g. WIFSTOPPED) even though neither _*_SOURCE is defined anywhere. So
I'm unsure how the union or those macros are even accessible. AFAICT
there shouldn't be _any_ wait-related definitions.
sys/wait.h? I've got some code that assumes the BSD-style union wait if
UNION_WAIT is defined (it doesn't appear to be) but otherwise an int.
Somehow, this int apparently is being passed to the BSD-style macros
(e.g. WIFSTOPPED) even though neither _*_SOURCE is defined anywhere. So
I'm unsure how the union or those macros are even accessible. AFAICT
there shouldn't be _any_ wait-related definitions.
Hope this has made sense. Please help!
Thanks,
Tim
Helge Blischke
Jul 29, 2008, 6:55:32 AM7/29/08
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Though it is a couple of years ago that I compiled C programs on A/UX,
I think the _POSIX_SOURCE gets defined by A/UX's cc as well as gcc if
the "-posix" switch is applied, otherwise _BSD_SOURCE will be defined.
Helge
--
Helge Blischke
Softwareentwicklung
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