Creating Command Line Args with gcc?

Question

I have the following code:

gcc test.c -o test -D ARGUMENT 2

and I want it to define ARGUMENT with a value of 2 but it says cannot find file 2 or something. How do I do this?

One note (wording difference might made it difficult for you) - what you are doing are not "creating command line arguments" - those your program will get at runtime via argc/argv pair of arguments to main(), but you are defining the preprocessor macro with the name "ARGUMENT" to expand to "2". Take a look at the "An introduction to GCC" - amazon.com/Introduction-GCC-Brian-J-Gough/dp/0954161793/… I personally do not have it, but from the glance at the content it seems nice. — Andrew Y
– Andrew Y, Commented Oct 27, 2009 at 21:07

jldupont · Accepted Answer · 2009-10-27 20:52:09Z

12

Try

-DARGUMENT=2

answered Oct 27, 2009 at 20:52

jldupont

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1 Comment

@bob: it happens even to the best.

Tordek · Accepted Answer · 2009-10-27 20:52:27Z

0

gcc test.c -o test -D ARGUMENT=2

answered Oct 27, 2009 at 20:52

Tordek

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eyalm · Accepted Answer · 2009-10-27 21:28:39Z

0

You can also use gcc test.c -o test -DARGUMENT.

ARGUMENT will be defined with no value but it is still possible to check it using #ifdef and friends.

answered Oct 27, 2009 at 21:28

eyalm

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