autofoo help requested

[John Baldwin <jhb at freebsd dot org>]

I'm attempting to get a "bare" build of GDB on FreeBSD working so that the
existing FreeBSD build bots will start working.  By "bare" I mean just
using "./configure" without any arguments or build-related environment
variables.  The build currently dies in bfd/ because it is unable to locate
the header for gettext:

In file included from ../../bfd/archive.c:134:
../../bfd/sysdep.h:184:11: fatal error: 'libintl.h' file not found
# include <libintl.h>
          ^~~~~~~~~~~

In FreeBSD gettext is installed as a 3rd party package in /usr/local
and the configure script for the intl/ subdirectory does find the
library, but it leaves INCINTL set to an empty value when I think
it should be set to "-I /usr/local/include":

% cat config.intl 
# This file records the configuration of libintl in a form that
# can be read back in by a configure script in a sister directory.
# See config/gettext.m4 for its use.

USE_NLS='yes'
LIBINTL='/usr/local/lib/libintl.so -Wl,-rpath -Wl,/usr/local/lib'
LIBINTL_DEP=''
INCINTL=''

XGETTEXT='/usr/local/bin/xgettext'
GMSGFMT='/usr/local/bin/msgfmt'
POSUB='po'

Looking in config.log of the 'intl/' subdirectory, it does figure out
that it needs '-I /usr/local/include' in CPPFLAGS, but it doesn't
include it in the generated INCINTL:

grep local.include *
Makefile:CPPFLAGS = -I/usr/local/include
config.log:configure:5455: cc -o conftest -g -O2  -I/usr/local/include   conftest.c  >&5
config.log:configure:5518: cc -o conftest -g -O2  -I/usr/local/include   conftest.c  /usr/local/lib/libiconv.so -Wl,-rpath -Wl,/usr/local/lib >&5
config.log:configure:5601: cc -c -g -O2 -I/usr/local/include conftest.c >&5
config.log:configure:5639: cc -o conftest -g -O2 -I/usr/local/include   conftest.c  >&5
config.log:configure:5674: cc -o conftest -g -O2 -I/usr/local/include   conftest.c  >&5
config.log:configure:5833: cc -o conftest -g -O2 -I/usr/local/include   conftest.c  >&5
config.log:configure:6251: cc -o conftest -g -O2 -I/usr/local/include    conftest.c  /usr/local/lib/libintl.so -Wl,-rpath -Wl,/usr/local/lib >&5
config.log:CPPFLAGS='-I/usr/local/include'
config.status:S["CPPFLAGS"]="-I/usr/local/include"

I have tried looking at the config/gettext.m4 file to ascertain how it
would set INCINTL and trying to guess why it isn't doing so, but so far
I haven't made much progress.

Does anyone have any useful suggestions or pointers on how I can track
this down further?

Thanks.

-- 
John Baldwin