Usted buscó: preprocessing (Checo - Inglés)

2- you make changes that involves preprocessing directives.
2- you make changes that involves preprocessing directives.

but hey, this is what i call "partial preprocessing".
but hey, this is what i call "partial preprocessing".

when preprocessing, handle directives, but do not expand macros.
when preprocessing, handle directives, but do not expand macros.

output #include directives in addition to the result of preprocessing.
output #include directives in addition to the result of preprocessing.

print text describing all the command line options instead of preprocessing anything.
print text describing all the command line options instead of preprocessing anything.

once again, preprocessing in background, using "cpp", does not work.
once again, preprocessing in background, using "cpp", does not work.

there is another problem too: after preprocessing, you would have to parse it too...
there is another problem too: after preprocessing, you would have to parse it too...

1- you make changes not related to # preprocessing directives, so your code work as usual.
1- you make changes not related to # preprocessing directives, so your code work as usual.

instead of outputting the result of preprocessing, output a rule suitable for make describing the dependencies of the main source file.
instead of outputting the result of preprocessing, output a rule suitable for make describing the dependencies of the main source file.

enable generation of linemarkers in the preprocessor output that will let the compiler know the current working directory at the time of preprocessing.
enable generation of linemarkers in the preprocessor output that will let the compiler know the current working directory at the time of preprocessing.

like m except in two respects: it does not include the predefined macros, and it outputs both the #define directives and the result of preprocessing.
like m except in two respects: it does not include the predefined macros, and it outputs both the #define directives and the result of preprocessing.

so you will soon see that really the simplest solution is to do it right:) (which +/- means caching the results of preprocessing at the end of each header).
so you will soon see that really the simplest solution is to do it right:) (which +/- means caching the results of preprocessing at the end of each header).

with -e, preprocessing is limited to the handling of directives such as "#define", "#ifdef", and "#error".
with -e, preprocessing is limited to the handling of directives such as "#define", "#ifdef", and "#error".