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Unistd.h header file in Visual Studio 2005

Hi,

I recently installed Visual Studio 2005 and trying to bulid an apllication and the application contains a header file called as unistd.h and when I compile the code it says..Unistd.h header file is missing...

I checked it in the standard system directories but there is no such file and when I comiple the code commenting the above header file..I am not getting the desire output..

Please let me know how to add this into the system directories and get mu code compiled..

Thanks in advance..

Jaime Olivares

inside your project settings, you have to specify an additional include folder, where the mentioned file is located.

Infinity08

unistd.h is pretty much UNIX/Linux specific ... where did you get this source, and what do you want to do with it (on a Windows system) ?

tatikor_143

ASKER

Hi Infinity,

We already worked on this once..Just to recollect ,there was an application of mine which is used to convert th binary format to ascii format.The question could be in your database and it also contains the code...

Could you please look inti it once and I am confident that U are the right person ton help me out.

thanks in advance

Infinity08

I participate in dozens of questions daily, so I can't find the question you're referring to ... Can you post the link ?

itsmeandnobodyelse

You can simply comment the #include <unistd.h>, compile and post the compile errors you'll get now (if at all). Then, we know what unix-specific code you were using.

Regards, Alex

tatikor_143

ASKER

Hi Infinity,

Here is the link to that question
https://www.experts-exchange.com/questions/22110125/Porting-from-unix-to-windows.html

It contains the entire source code for my application and it clearly explains why unistd.h header file is used.

Thanks

Infinity08

Wow, no wonder I didn't remember ... that was more than 10 months ago heh.

Which of the functions from unistd.h are you using in your code ?

http://www.opengroup.org/onlinepubs/007908775/xsh/unistd.h.html

Part of these will have to be ported to Visual C++ on Windows.

tatikor_143

ASKER

Hi Infinity,

I think there is a problem with the time.h header file..When I comment out the unistd.h header file and compile it the it throws the following error..

Debug Assertion Failed..
File : strftime.c

Expression ((timeptr ->tm_mday>=1)&&( timeptr->tm_mday<=31)

I included time.h header file and the lines of code that use above library function is

_gmtime32_s(&theTime, &(pReport->timeStamp));
strftime(timeString, sizeof(timeString), "%d/%m/%Y %H:%M:%S", &theTime);

If we can resolve this error...then the application may work fine..

Thanks

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Infinity08

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tatikor_143

ASKER

Infinity,

U are genius....Its working fine now after the above changes..

Can u explain me what happens if I declare it as only time32_t timeStamp;

Thanks in Advance..

Infinity08

>> Can u explain me what happens if I declare it as only time32_t timeStamp;

time32_t is probably not the same as __time32_t. The latter is what _gmtime32_s expects.

Infinity08

Take a look here for more info on _gmtime32_s :

http://msdn2.microsoft.com/en-us/library/3stkd9be(VS.80).aspx