Description:
------------
The config.guess is not written to have support for AIX 7.  This causes the configure script to make shared libraries not available.

The AIX456 line in the system type case statement is currently defined as:
    *:AIX:*:[456])

The line needs to be changed to include the 7 for AIX 7.  In the aclocal.m4 file, the similar line for aix is aix[[4-9]]*), planning for future versions of AIX.

The result you will see without the 7 in the config.guess file is:
checking whether the cc -qlanglvl=extc89 linker (/usr/bin/ld) supports shared libraries... no

As a workaround, this can be resolved by adding a 7 to the line:
    *:AIX:*:[4567])


Expected result:
----------------
checking whether the cc -qlanglvl=extc89 linker (/usr/bin/ld) supports shared libraries... yes

Actual result:
--------------
checking whether the cc -qlanglvl=extc89 linker (/usr/bin/ld) supports shared libraries... no