Microchip Technology SW006022-1N Data Sheet
MPLAB
®
XC16 C Compiler User’s Guide
DS52071B-page 24
2012 Microchip Technology Inc.
2.3
USING THE CCI
The CCI allows enhanced portability by refining implementation-defined behavior and
standardizing the syntax for extensions to the language.
standardizing the syntax for extensions to the language.
The CCI is something you choose to follow and put into effect, thus it is relevant for new
projects, although you may choose to modify existing projects so they conform.
projects, although you may choose to modify existing projects so they conform.
For your project to conform to the CCI, you must do the following things.
Enable the CCI
Select the MPLAB IDE widget Use CCI Syntax in your project, or use the
command-line option that is equivalent.
Include <xc.h> in every module
Some CCI features are only enabled if this header is seen by the compiler.
Ensure ANSI compliance
Code that does not conform to the ANSI C Standard does not confirm to the CCI.
Observe refinements to ANSI by the CCI
Some ANSI implementation-defined behavior is defined explicitly by the CCI.
Use the CCI extensions to the language
Use the CCI extensions rather than the native language extensions
The next sections detail specific items associated with the CCI. These items are seg-
regated into those that refine the standard, those that deal with the ANSI C Standard
extensions, and other miscellaneous compiler options and usage. Guidelines are indi-
cated with these items.
regated into those that refine the standard, those that deal with the ANSI C Standard
extensions, and other miscellaneous compiler options and usage. Guidelines are indi-
cated with these items.
If any implementation-defined behavior or any non-standard extension is not discussed
in this document, then it is not part of the CCI. For example, GCC case ranges, label
addresses and 24-bit short long types are not part of the CCI. Programs which use
these features do not conform to the CCI. The compiler may issue a warning or error
to indicate when you use a non-CCI feature and the CCI is enabled.
in this document, then it is not part of the CCI. For example, GCC case ranges, label
addresses and 24-bit short long types are not part of the CCI. Programs which use
these features do not conform to the CCI. The compiler may issue a warning or error
to indicate when you use a non-CCI feature and the CCI is enabled.