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Linking [message #1754684]

Tue, 21 February 2017 14:40

Arwel Hughes

Messages: 3
Registered: February 2017

Junior Member

Hi,
I'm trying to make a simple C project, but when I try to compile, I get 'undefined reference to `powf'', even though I have #include <math.h> at the start of my code.

I've googled around this, and am told that that for previous versions of eclipse, I should..... "project -> properties -> C/C++ Build -> Settings -> GCC Linker -> Libraries -> add "m" -> Apply -> build". But, in Oxygen everything has changed and there is no longer a 'C/C++ build' under this menu as far as I can see.

How do I do this in the latest version please? This is *really* annoying me! Confused

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Re: Linking [message #1754906 is a reply to message #1754684]

Thu, 23 February 2017 19:18

Gregory Sagehorn

Messages: 4
Registered: February 2017

Junior Member

You must #include <math.h> and must remember to link in the math library at compilation: cc mathprog.c -o mathprog -lm
If that does not fix it. And if that does not work try defining the Math.h.

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