SLAU132V October 2004 – February 2020
When you use the --program_level_compile option, the compiler uses program-level optimization. When you use this type of optimization, the compiler removes any function that is not called, directly or indirectly, by main(). You might have C/C++ functions that are called instead of main().
The FUNC_EXT_CALLED pragma specifies that the optimizer should keep these C functions or any functions these C/C++ functions call. These functions act as entry points into C/C++. The pragma must appear before any declaration or reference to the function to keep. In C, the argument func is the name of the function to keep. In C++, the pragma applies to the next function declared.
The syntax of the pragma in C is:
| #pragma FUNC_EXT_CALLED (func) |
The syntax of the pragma in C++ is:
| #pragma FUNC_EXT_CALLED |
Except for _c_int00, which is the name reserved for the system reset interrupt for C/C++programs, the name of the interrupt (the func argument) does not need to conform to a naming convention.
When you use program-level optimization, you may need to use the FUNC_EXT_CALLED pragma with certain options. See Section 3.4.2.