06.2.1 - Alertor.c

[bitbau]

Getting Error while building:

/usr/bin/ld: /tmp/ccSgTuXA.o: undefined reference to symbol 'sin@@GLIBC_2.4'
//lib/arm-linux-gnueabihf/libm.so.6: error adding symbols: DSO missing from command line

[SuhaylZhao]

Hi,

Can you show me a screenshot of where you made a mistake? How did it happen? You give too little information, I can't find the reason accurately.

Thanks.

[bitbau]

The error occurs in Geany, right after hitting F9 for "Build". I didn't change the code in any way

[bitbau]

I got it working by just adding the -lm parameter to the build command

[SuhaylZhao]

Hi,

That's right! You're great!

You are missing some compilation options, which can be found in the tutorial.

Thanks!