Using math.h library with MCF5213

[albert_udl]

Hi,

I am trying to use functions from the math library in MCF5213 and I always get the same error:

Error   : Undefined : "exp"
Project_3.c line 50   Referenced from "main" in

Link failed.

The library is properly include with: #include <math.h> . Is it necessary to set the -lm parameter in the compiler? And if so, how to do it?

Thanks a lot,

Albert

[J2MEJediMaster · Accepted solution]

OK, you've added the header file to your source code, but have you added the proper library to the project that provides the math functions you need? The choice of MCF5213 uses a reduced set library by default. You will have to select a different library to obtain the math capabilities that you need. Consult the ColdFire Build Tools Reference manual, located as ColdFire_Build_Tools_reference.pdf in the Help directory of your CodeWarrior installation. Check out the chapter ColdFire Runtime Libraries, paying particular attention to the Reduced Working Set Libraries section.

---Tom