Re: [ts-7000] Cygwin - cross-compiling/link options and math functions

[David Hawkins <>]

> 
> arm-unknown-linux-gnu-gcc -Wall -lm s4.c  -o s4
> 
> the problem disappears. I know that the -l option is normally used to
> instruct the location of library files, but could not find out what
> -lm actually does. It certainly works, but it would be nice to know
> why. Anyone know why this works?

Its not the location of a library file, its to link against
a library file, i.e., -lm says to link against libm, the
library with the math functions in.

Similarly if you write some pthreads code, you'd need -lpthread
to link against ... you guessed it ... libpthread.

This is not specific to the TS-ARMs, its a standard gcc
thing.

HTH,
Dave


 
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