Re: avis-client-c: ceilf, linking with -lm

[Zack Weinberg]

On 2013-09-16 10:05 AM, Daniel Pocock wrote:

> I looked through the package and I found that there was a utility
> library in there that didn't have the same AM_LDFLAGS definition as all
> the other components
>
> The problem was only appearing much later in the build unfortunately,
> when building the test binary, but it is fixed now.
>
> Can anything be done to make this type of thing easier to diagnose?

If the "utility library" is linked into a shared object, 
-Wl,-z,defs,--as-needed may help.  If it only exists in .a and/or .la 
format (no .so) then unfortunately I don't think there's anything that 
can be done without a good deal of work.  'ar' doesn't have any 
equivalent of -z defs, and 'ld' has no "just check for unresolved 
externals, don't create any output" mode.

zw