Re: Using autoconf-lib-link outside gettext

[Hrvoje Niksic]

Bruno Haible <address@hidden> writes:

> Hrvoje Niksic wrote:
>> I understand that the `autoconf-lib-link' subdirectory of the gettext
>> distribution contains the infrastructure needed to use
>> AC_LIB_LINKFLAGS in a separate program.  But there seem to be no
>> instructions on how to integrate this directory with an existing
>> program that uses Autoconf.
>
> This is correct. Here's some documentation.

Thanks for providing this documentation.  Is there a canonical
location for the M4 files and for `config.rpath'?

Is it possible to provide custom locations for certain libraries?  For
example, Wget's configure script looks for OpenSSL in the
system-default location, then in /usr/local/ssl (the location used by
OpenSSL's `make install'), then in /usr/local, then in /opt.  If the
user specifies a root directory, that one is used instead.  Is it
possible to similarly influence AC_LIB_LINKFLAGS?

It is sometimes also important to check for headers at the same time
when checking for the library.  How does AC_LIB_LINKFLAGS deal with
the issue of finding the correct -I invocation to go along with the
-L/-R invocations?


Another thing that doesn't seem to be covered is the relation between
this macro, and AC_CHECK_LIB.  Am I supposed to use both or does
AC_LIB_LINKFLAGS include everything one would expect AC_CHECK_LIB to
do?