After having installed libpng
into my computer, I've included it into my project using #include <png.h>
on a Windows 7 SP1 plateform and using Visual Studio Ultimate 2013.
But at build time, I'm getting this error:
C1083: Cannot open include file: 'unistd.h': No such file or directory
How do I please to fix this? I haven't found yet any solution in the.net?
The "uni" in unistd stands for "UNIX" - you won't find it on a Windows system.
Most widely used, portable libraries should offer alternative builds or detect the platform and only try to use headers/functions that will be provided, so it's worth checking documentation to see if you've missed some build step - eg perhaps running "make" instead of loading a ".sln" Visual C++ solution file.
If you need to fix it yourself, remove the include and see which functions are actually needed, then try to find a Windows equivalent.
If you're using ZLib in your project, then you need to find :
#if 1
in zconf.h and replace(uncomment) it with :
#if HAVE_UNISTD_H /* ...the rest of the line
If it isn't ZLib I guess you should find some alternative way to do this. GL.
Change your C++ standard to C++17 from your project directory. because you do not need to unistd.h in C++17 standard in VS.
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