src/gnu/usr.bin/cc/cc1, branch main

remove GCC 4.2.1 build infrastructure

2020-02-29T03:25:51+00:00

As described in Warner's email message[1] to the FreeBSD-arch mailing
list we have reached GCC 4.2.1's retirement date.  At this time all
supported architectures either use in-tree Clang, or rely on external
toolchain (i.e., a contemporary GCC version from ports).

GCC 4.2.1 was released July 18, 2007 and was imported into FreeBSD later
that year, in r171825.  GCC has served us well, but version 4.2.1 is
obsolete and not used by default on any architecture in FreeBSD.  It
does not support modern C and does not support arm64 or RISC-V.

Thanks to everyone responsible for maintaining, updating, and testing
GCC in the FreeBSD base system over the years.

So long, and thanks for all the fish.

[1] https://lists.freebsd.org/pipermail/freebsd-arch/2020-January/019823.html

PR:		228919
Reviewed by:	brooks, imp
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D23124

Don't use CCACHE for linking.

2018-06-27T19:29:15+00:00

MFC after:	2 weeks
Sponsored by:	Dell EMC

DIRDEPS_BUILD: Update dependencies.

2017-10-31T00:07:04+00:00

Sponsored by:	Dell EMC Isilon

DIRDEPS_BUILD: Update GCC dependencies.

2016-06-04T17:37:25+00:00

Sponsored by:	EMC / Isilon Storage Division

DIRDEPS_BUILD: Regenerate without local dependencies.

2016-02-24T17:20:11+00:00

These are no longer needed after the recent 'beforebuild: depend' changes
and hooking DIRDEPS_BUILD into a subset of FAST_DEPEND which supports
skipping 'make depend'.

Sponsored by:	EMC / Isilon Storage Division

Use LIBEXECDIR for /usr/libexec.

2015-11-26T01:14:40+00:00

MFC after:	1 week
Sponsored by:	EMC / Isilon Storage Division

META_MODE: Remove DEP_RELDIR from Makefile.depend files.

2015-09-25T19:26:08+00:00

This has not been needed since r284171 in projects/bmake.

Sponsored by:	EMC / Isilon Storage Division

Add META_MODE support.

2015-06-13T19:20:56+00:00

Off by default, build behaves normally.
WITH_META_MODE we get auto objdir creation, the ability to
start build from anywhere in the tree.

Still need to add real targets under targets/ to build packages.

Differential Revision:       D2796
Reviewed by: brooks imp

Merge from head

2014-05-08T23:54:15+00:00

Use src.opts.mk in preference to bsd.own.mk except where we need stuff

2014-05-06T04:22:01+00:00

from the latter.