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Error : `abs' undeclared (first use this function) [message #85131]

Wed, 05 November 2003 05:03

Eclipse User

Originally posted by: deuff.nii.ac.jp

Hello,

I get this error when I build my C++ project.

Error : `abs' undeclared (first use this function)

I think the builder doesn't know where math.h is. But I don't know how I can
indicate to it the location !...

Could someone help me ?

Thank you very much,

Dominique Deuff

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Re: Error : `abs' undeclared (first use this function) [message #85193 is a reply to message #85131]

Wed, 05 November 2003 19:29

Andrew Niefer

Messages: 990
Registered: July 2009

Senior Member

Make sure you include the header ( #include <math.h>), and assuming you are
using a Managed Make project, in the project properties click on C/C++
Build. Then in the Configuration settings select C++ Compiler / Directories
and enter the path to the directory containing math.h there.

The directories specified there are passed to the compiler as include paths
(-I). These paths are also used by the parser which will affect the outcome
of things like search and code complete.

-Andrew

"Dominique Deuff" <deuff@nii.ac.jp> wrote in message
news:boa08a$38c$1@eclipse.org...
> Hello,
>
> I get this error when I build my C++ project.
>
> Error : `abs' undeclared (first use this function)
>
> I think the builder doesn't know where math.h is. But I don't know how I
can
> indicate to it the location !...
>
> Could someone help me ?
>
> Thank you very much,
>
> Dominique Deuff
>
>
>

Report message to a moderator

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