Problem with compiling mex with gcc-4.7

I am trying to compile a c-file using the command

mex file_name.c

In windows 7 everything works fine. However, in Ubuntu I get the following warnings:

• warning: implicit declaration of function ‘TCPclient_wrap’ [-Wimplicit-function-declaration]
• warning: assignment discards ‘const’ qualifier from pointer target type [enabled by default]
• warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result]

And the compiled mex file is not working properly.

I am using gcc-4.7 compiler as recommended. Other c-files are compiled fine from Ubuntu with gcc-4.7.

I am attaching the files, that I am trying to compile.

Answer 1

[Dasharath Gulvady]

Bulat,

The warnings might not be specific to MEX files, but may be related to the difference between C/C++ compilers in Windows and GCC compiler.

1. You might be missing function prototypes in your code.

http://stackoverflow.com/questions/8440816/warning-implicit-declaration-of-function

2. You might not be using the right header files.

http://askubuntu.com/questions/482696/getting-time-in-ubuntu