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| ktg |
 Posted: Thu Aug 21, 2008 1:06 am Post subject: C functions availability on different OS |
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Centurion
Joined: 09 Jan 2006
Posts: 138
Location: India
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Hi All,
How to check whether a C function is available on given system/OS other than by trying 'man' for the function or through compilation error?
For ex. strerror_r is available on Linux but not on Solaris. man strerror_r on Solaris fails.
TIA,
Kalpana |
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| Gaya3 |
| Posted: Thu Aug 21, 2008 2:18 am Post subject: |
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Jedi
Joined: 12 Sep 2006
Posts: 2493
Location: Boston, US
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you cant compare unix/linux compiler and solaris compiler as it is.
there are quite some difference, how it is handling in the kernel level calls too.
you should go through C code portability part, (please search about this)
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Gayathri
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Do Something Before you Die |
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| bruce2359 |
| Posted: Thu Aug 21, 2008 5:20 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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The vendor-supplied application programming reference manual is the place to see if a given c function is supported or not.
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| jsware |
| Posted: Thu Aug 21, 2008 5:23 am Post subject: Re: C functions availability on different OS |
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Chevalier
Joined: 17 May 2001
Posts: 455
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| ktg wrote: |
| For ex. strerror_r is available on Linux but not on Solaris. man strerror_r on Solaris fails. |
The strerror function is thread safe on Solaris, but not on Linux. See http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6223913 for a description of strerror vs strerror_r on Solaris/Linux.
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John
The pain of low quaility far outlasts the joy of low price. |
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| mqjeff |
| Posted: Thu Aug 21, 2008 5:24 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| gbaddeley |
| Posted: Thu Aug 21, 2008 7:35 pm Post subject: |
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Jedi Knight
Joined: 25 Mar 2003
Posts: 2538
Location: Melbourne, Australia
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grep funcname /usr/lib/include/*.h /usr/lib/include/sys/*.h
and then go looking in the matched .h files, as there may be #ifdef around the function prototype.
As state previously, the vendor documentation is the definative way to go.
Do you have any particular function in mind? Nearly all of the standard C run-time functions are available on all platforms that support a C compiler.
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Glenn |
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| ktg |
| Posted: Fri Aug 22, 2008 5:32 am Post subject: |
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Centurion
Joined: 09 Jan 2006
Posts: 138
Location: India
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Thanks every one.
I was looking for strerror_r in Solaris. This function is not available on Solaris 8 but is available on Solaris 10.
man libc gave the functions available on the system. But, I could not get free/online Appication programming reference for Solaris 8 
Regards,
Kalpana |
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