[patch] Fix BZ 11420 -- configure uses incorrect link order when testing libpython

["Paul Pluzhnikov via gdb-patches" <gdb-patches at sourceware dot org>]

Greetings,

https://stackoverflow.com/a/49868387
https://sourceware.org/bugzilla/show_bug.cgi?id=11420

Configure uses "gcc -o conftest -g ... conftest.c -ldl -lncurses -lm -ldl
... -lpthread ... -lpython2.7" when deciding whether give libpython is
usable.

That of course is the wrong link order, and only works for shared libraries
(mostly by accident), and only on some systems.

Attached patch fixes this.

I am not sure about this part of the patch:

-  LIBS="$LIBS $new_LIBS"
+  LIBS="$new_LIBS $LIBS"

I think it's always better to prepend new libraries.

Thanks,

2018-04-17  Paul Pluzhnikov  <ppluzhnikov@google.com>

             PR gdb/11420
             * gdb/configure.ac: Prepend libpython.
             * gdb/python/python-config.py: Likewise.
             * gdb/configure: Regenerate.


-- 
Paul Pluzhnikov

Attachment: gdb-bz11420-20180417.txt
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