Hans Ulrich Niedermann 0dbeaf7cbf Use consistently named non-reserved CPP macros for header files ...

C preprocessor macros beginning/ending with underscores are
reserved for system use as well as macros containing a double
underscore anywhere, so application software macros are
supposed to be named differently.

For a header file gphoto2-abilities-list.h, this
consistently uses a macro name
LIBGPHOTO2_GPHOTO2_ABILITIES_LIST_H
for the usual

    #ifndef LIBGPHOTO2_GPHOTO2_ABILITIES_LIST_H
    #define LIBGPHOTO2_GPHOTO2_ABILITIES_LIST_H
    ... content of the header file ...
    #endif /* !defined(LIBGPHOTO2_GPHOTO2_ABILITIES_LIST_H) */

Found using "clang -Weverything".

This should work, unless when run with an ancient C preprocessor
which might only the first 8 or 10 characters to distinguish
macro names and ignores the remainder of the name.

2021-10-05 16:07:20 +02:00

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