Re: FOO_LIBS

[Gavin Smith]

>> Could you use a "--with" flag using AC_ARG_WITH and run AC_CHECK_LIB
>> only if the library was enabled?
>
> That's not the problem.
>
> The problem is that:
>
> - we think we cannot put all libraries in LIBS.  Therefore...
>
> - we put certain libraries in FOO_LIBS which is then not "seen" by the
>   rest of the "configure" process, so any functions that we search for
>   that could/should be found in FOO_LIBS are not found because configure
>   searches only LIBS.
>
> So I think I need a way to tell AC_CHECK_FUNCS that it should check LIBS
> and FOO_LIBS and any other "separated" library sets that I come up
> with.
>
I don't understand why you can't put all the libraries in LIBS. You said

>Originally I let configure put all of the libraries in the LIBS
variable, but I got a lot of pushback from folks with embedded systems
and similar targets where the extra libraries were taking up too much
space.

Determing whether libraries are added to LIBS using --with flags would
fix this problem, as they could disable unwanted libraries.