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?
Add a comment
|
2 Answers
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:
4 Comments
Matthew Flaschen
Neither of these are equivalent to the options he's asking about.
Mingye Wang
@MatthewFlaschen These settings affect all functions defined later in a source file, so to some extent they can be equivalent: put them on the top and they kind of become global.
Ciro Santilli OurBigBook.com
No debug unfortunately it seems: stackoverflow.com/questions/2006821/…
Petr Skocik
Is there a pragma for setting an -f/-fno flag (e.g., ` -fno-ipa-icf`)?
No. Some compiler options have #define equivalents, but not those. This belongs in your make file (or equivalent). With GNU Make:
CFLAGS += -g -Wall
2 Comments
Matt Joiner
-Wall has an in source equivalent.Matthew Flaschen
@Matt, what is it? Your answer doesn't give one, and
#pragma GCC diagnostic warning "-Wall" definitely doesn't work in GCC 4.4.