CFLAGS with -Wall or -Werror in Modux Toolbox 3.0

In this post we will discuss about CFLAGS with -Wall and -Werror option in Modus Toolbox 3.0 (MTB3.0).

The user need to integrate few C source and header files. Let us assume that the filenames are source_1.c, source_2.c, source_1.h and source_2.h.

To integrate the source files into the MTB3.0 project the files were copied to the existing folder and MTB IDE could include the source files to the project automatically.

The project also contains MTB Shared library which will be generated while creating the project.

Now let us assume a function named my_function defined in source_1.c.

The user calls my_function from one of the source file present inside the mtb_shared folder. However the prototype for the function is not included into the source file which is available in mtb_shared.

As the Makefile contains CFLAGS with -Werror, the compiler stops generating the final output such as hex or bin files.

When we have added the prototype for my_function in the source file present in mtb_shared, then the IDE could generate the hex or bin files. 

The possible solutions to it are, 

1. To change the CFLAGS Setting from -Werror to -Wall.
2. Include the prototype for the functions into source files present in mtb_shared.

As removing -Werror might stop generating some other errors such as overflow calculations for example.

Hence it is advised to include the function prototypes.