Re: [Gumstix-users] Linker error to my header files

[Dave H. <dhy...@gm...>]

Hi Emily,

On Wed, Jul 14, 2010 at 10:04 AM, emmers369 <emm...@ya...> wrote:
>
> Hi,
> I am having some trouble linking to my functions when I compile my files.
> After reading some of the other posts it looks like maybe it's something I
> am not including in LDFLAGS. Below I have included a snipped from the
> program: main.c, sensors.c and sensors.h. When I bitbake them I get the
> error that 'getGyroData()' is undefined despite the fact that it is in
> there. I am also including my .bb file.

I think that this line:

${CC} ${CFLAGS} ${LDFLAGS} -o ie2010 main.c

is saying compile and link main.c to create the program ie2010.
Presumably you need something like:

${CC} ${CFLAGS} ${LDFLAGS} -o ie2010 main.c sensors.c

If you're creating a library, then you would need to use the -l (and
possibly -L). I'm more familiar with using makefiles, so I made my
gpio stuff use makefiles to create the libraries and apps, and have my
bitbake recipie use make to build things.

-- 
Dave Hylands
Shuswap, BC, Canada
http://www.DaveHylands.com/