Log message:
gmake: Unbreak PREFER_PKGSRC circular dependencies.

Just because a builtin is available does not mean a user has configured their
system to use it.  Check for USE_BUILTIN instead of IS_BUILTIN to ensure both
the builtin is available, and the user has allowed pkgsrc to use it, before
enabling.

Log message:
gmake: comment the inclusion of gettext-lib/builtin.mk

Log message:
gmake: make nls option enabled by default

Log message:
gmake: fix misuse of variables from bsd.builtin.mk

pkgsrc changes:
---------------
- Replace PREFER.gettext=native (that does not work) by USE_BUILTIN.gettext.

Log message:
gmake: fix PR pkg/54629

pkgsrc changes:
- Remove PLIST_SRC in Makefile.
- Remove PLIST.locale file (use PLIST.nls instead).

Log message:
gmake: Unconditionally avoid setgid and group change in configure phase

On some systems gmake can be installed setgid and with the group
adjusted according the group of /dev/kmem.  Previously this was
adjusted in post-install phase.
Rework that by passing CONFIGURE_ARGS instead and document that
via a comment.

Log message:
Patch SV 51159 in GNU Make.

Hopefully this will fix the problems joerg@ and others encountered last
time gmake was updated to 4.2.1. Description of the patch:

[SV 51159] Use a non-blocking read with pselect to avoid hangs.
* posixos.c (set_blocking): Set blocking on a file descriptor.
(jobserver_setup): Set non-blocking on the jobserver read side.
(jobserver_parse_auth): Ditto.
(jobserver_acquire_all): Set blocking to avoid a busy-wait loop.
(jobserver_acquire): If the non-blocking read() returns without
taking a token then try again.

Log message:
Update GNU make to 4.2.1.

Version 4.2.1 (10 Jun 2016)

A complete list of bugs fixed in this version is available here:

http://sv.gnu.org/bugs/index.php?group=make&report_id=111&fix_release_id=107&set=custom

This release is a bug-fix release.

Version 4.2 (22 May 2016)

A complete list of bugs fixed in this version is available here:

http://sv.gnu.org/bugs/index.php?group=make&report_id=111&fix_release_id=106&set=custom

* New variable: $(.SHELLSTATUS) is set to the exit status of the last != or
  $(shell ...) function invoked in this instance of make.  This will be \ 
"0" if
  successful or not "0" if not successful.  The variable value is \ 
unset if no
  != or $(shell ...) function has been invoked.

* The $(file ...) function can now read from a file with $(file <FILE).
  The function is expanded to the contents of the file.  The contents are
  expanded verbatim except that the final newline, if any, is stripped.

* The makefile line numbers shown by GNU make now point directly to the
  specific line in the recipe where the failure or warning occurred.
  Sample changes suggested by Brian Vandenberg <phantall@gmail.com>

* The interface to GNU make's "jobserver" is stable as documented in the
  manual, for tools which may want to access it.

  WARNING: Backward-incompatibility! The internal-only command line option
  --jobserver-fds has been renamed for publishing, to --jobserver-auth.

* The amount of parallelism can be determined by querying MAKEFLAGS, even when
  the job server is enabled (previously MAKEFLAGS would always contain only
  "-j", with no number, when job server was enabled).

Log message:
devel/gmake: Make this work with glibc glob interface v2

http://git.savannah.gnu.org/cgit/make.git/commit/?id=193f1e81

Log message:
devel/gmake: Apply patch to support GLIBC glob interface v2

http://git.savannah.gnu.org/cgit/make.git/commit/?id=48c8a116