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cgcccompiler-options

Add GCC options to top of C source file

Is is possible to put something at the top of the C source file, like

// GCC_OPTIONS=-g,-Wall

that will add those options automatically to gcc every time you compile this file?

Solution

  • Yes it is, at least for some flags. You can push and pop diagnostic settings like this:

    #pragma GCC diagnostic error "-pedantic"
#pragma GCC diagnostic warning "-Wall"

    This is also possible for optimization levels on a per-function level:

    #pragma GCC optimize ("string"...)

    These #pragma definitions affect all code after them in a source file.

    See these other questions for more information: