[SOLVED] S_ISREG macro undefined

Issue

Questions

• Are the posix macros S_ISREG, S_ISDIR etc linux only? I need to find out because i am trying to compile CURL and it is trying to use them on windows
• What include file can i use to access them on windows.

This is the offending code

/*we ignore file size for char/block devices, sockets etc*/
if(S_ISREG(fileinfo.st_mode))
   uploadfilesize= fileinfo.st_size;
}

and it causes an error

error LNK2019: unresolved external symbol _S_ISREG referenced in function _operate file tool_operate.obj

They are referenced in the following questions

• How to use S_ISREG() and S_ISDIR() POSIX Macros?
• Differentiate between a unix directory and file in C and C++
• Problem reading directories in C

Apparently S_ISREG() is part of a bunch of posix macros and is apparently supposed to tell us if a file is a "regular file" but all the examples I found had linux specific include files.

Solution

No such thing on windows, you can use the FindFirstFile, FindNextFile win32 api, the return structure contains something similar but not the same.

If you use gcc/mingw library they have a stat() simulation. You need to include sys/stat.h for that macro.

Answered By - pizza

Answer Checked By - Dawn Plyler (WPSolving Volunteer)