Re: Autoconf can't find X11 libraries

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On Mon, Jan 25, 2016 at 3:12 AM, Thomas Dickey <dickey@xxxxxxx> wrote:
> On Thu, Jan 21, 2016 at 10:11:47AM +0300, anatoly techtonik wrote:
>> On Wed, Jan 13, 2016 at 1:19 PM, Thomas Dickey <dickey@xxxxxxx> wrote:
>> > On Mon, Jan 11, 2016 at 02:05:49PM +0300, anatoly techtonik wrote:
>> >> Hi,
>> >>
>> >> In this build on Ubuntu x86_64 autoconf is unable to find X11
>> >> libraries:
>> >>     https://travis-ci.org/techtonik/PDCurses/builds/101477536
>> >> However, it works with explicit configure option
>> >>     --x-libraries=/usr/lib/x86_64-linux-gnu
>> >>     https://travis-ci.org/techtonik/PDCurses/builds/101506738
>> >>
>> >> It looks like the problem is PDCurses specific
>> >> http://askubuntu.com/questions/539574/how-to-install-xaw-package-with-header-files/578003
>> >> probably because people rarely use Xaw. Anyway, how to fix
>> >> it? Is it an autoconf bug?
>> >
>> > no - it is a bug in PDCurses' configure script, which assumes that the
>> > libraries are in a directory "../lib" relative to the location of the
>> > X headers.
>>
>> Thank for clarification. The ./configure script is autogenerated  - at
>> least this is said in headers
>> "Generated by GNU Autoconf 2.61 for PDCurses 3.4."
>> So, is it a bug in Autoconf?
>>
>> > You might find this to be useful:
>> >
>> >         http://anonscm.debian.org/cgit/users/agmartin/pdcurses.git/
>>
>> I see only two patches, one of which is said to be fixed upstream
>> https://anonscm.debian.org/cgit/users/agmartin/pdcurses.git/tree/debian/patches
>> I can't extract the solution for complication problem from them.
>
> So (referring to PDCurses 3.4)
> this line in the configure script is the problem:
>
>         mh_lib_dirs="$x_libraries `echo "$ac_x_includes $ac_x_header_dirs" | sed s/include/lib/g`"
>
> The problem is that 64-bit machines nowadays generally use lib64 - not lib,
> as the script assumes.  When I tweaked it by hand, I just edited that line.
>
>         mh_lib_dirs="$x_libraries `echo "$ac_x_includes $ac_x_header_dirs" | sed s/include/lib64/g`"

And this will break 32-bit machines, no?

> But I prefer packages...
>
> Refreshing my memory, I see that Martin may not have _fixed_ that.
> But I did, using a script in the debian/rules file.  I'm attaching
> that, for discussion.

As this list is about autoconf, is it possible to fix it Autoconf way,
without debian/rules? I thought that there is be some environment
variable (or is there another setting storage) that ./configure should
read to detect where includes and libs are located for the current
system.
-- 
anatoly t.

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