convert HAVE_GCC handling to modern GCC release numbering:
- HAVE_GCC=5 is now the default (vs. HAVE_GCC=53 we've been using for
GCC 5.4 and GCC 5.5.)
- remove some more GCC 4.8 code. we don't support GCC 4 here.
- adjust set lists to gcc=5 from gcc=53.

add some basic HAVE_GCC=6 handling (totally unused so far.)

no need fo clean vers.c
fix typo

branches: 1.31.6; 1.31.10; 1.31.14;
Revert previous change:
gcc-4.8.1 converts -mc68000 to -mcpu=68000 which breaks gas. gas even
breaks with -mcpu=68010, but works with -march=68010 so we'll go with that.

avoid confusion with 68010 and 68020. The sun3 always was a 68020, and
the code assumes that.

Build boot loaders without unwind tables.

branches: 1.28.8; 1.28.18; 1.28.22;
Introduce .WAIT into the cleandir rule for blasting the libsa/libkern/etc.
trees, because it can race with the libsa/libkern/etc. makefiles' own
cleandir rules. I think I've found all of the uses of the offending idiom...
Closes PR 43360.

branches: 1.27.2; 1.27.4;
Switch sun68k standalone programs to using MI libsa and libkern.
Bump version.

Tested bootxx + ufsboot on TME (sun2 and sun3) and 3/80 (sun3x).

Remove bcmp() from MD libsa.

XXX: These ports should be rewritten to use MI libsa for maintainability.

branches: 1.25.2;
WARNSfy.

branches: 1.24.54; 1.24.58; 1.24.66;
Make sun68k/stand build without installed ${DESTDIR} files.

Currently "machine" symlink points sys/arch/sun68k/include,
but this means some <machine/foo.h> files are taken from
sys/arch/sun68k/include but others (i.e. files not in sun68k/include)
are taken from ${DESTDIR}/usr/include/machine.

Instead, make "machine" symlink point sys/arch/${MACHINE}/include,
make "sun68k" symlink point sys/arch/sun68k/include (not sys/arch/sun68k),
add sys/arch to include path, and move some files where appropriate.

Always set CFLAGS, CPUFLAGS, and COPTS explicitly like i386/stand
to override settings in /etc/mk.conf, so that build won't fail
in sun68k which contains both sun2 and sun3 sources.

Suggested by thorpej, and closes PR toolchain/34528.

branches: 1.22.18;
Follow up the renaming of in_cksum.c to ip_cksum.c.

branches: 1.21.2;
Adapt to transition from libkern to src/common/lib/libc. Tested on 3/80.

XXX: Is it simpler to build standard MI libsa/libkern libraries?

merge ktrace-lwp.

branches: 1.19.16;
Specify 32bit daddr_t not only for ufsboot but also libsa and all SA_PROGs.
Now bootxx and ufsboot works again.

Use ${HOST_SH} instead of `sh'.

If necessary, pull in <bsd.sys.mk> to get the definition of HOST_SH;
Makefiles that pull in one of (most of) <bsd.*.mk> will get this anyway.

Fix same breakage as previous (need memmove for symlink handling in ufs.c)
but use (probably) smaller footprint code from libsa.

Now that ufsboot / ufs.c uses memmove(), we need to include it here.

need -ffreestanding

branches: 1.14.2;
Revert last change (dependance on divdi3.c, moddi3.c, and qdivrem.c) and
use 32bit daddr_t instead, as suggested by Izumi Tsutsui.

Add snprintf, divdi3, moddi3, and qdivrem so that ufsboot builds.

Always build the m68000 math routines, since we compile libsa in m68000 mode.

branches: 1.11.2; 1.11.4;
- implement putstr(), and use in various places instead of printf()
- wrap more debug stuff in #ifdef DEBUG
- for bootxx, provide minimal panic() which uses putstr() instead of printf()

bootxx is now < 7.5KB

To make things build correctly, rely totally .PATH and never
have source files be explicit paths.

On the m68000, instead of extracting integer support from
libgcc, use bits from sys/lib/libkern.

Added files.c to SRC_sa.

On the sun2, added support for loading larger kernels,
and pull objects from the libgcc in DESTDIR.

MKfoo=no -> NOfoo

Work around <bsd.lib.mk> used for kernel libs in other places. Clean up
include paths.

branches: 1.4.2;
Build the loadfile() a.out, ECOFF, and ELF back-ends as separate
objects.

branches: 1.3.2;
add ashldi3.c, needed by ufs.c due to added cast in lblktosize().

branches: 1.2.2;
adjust the hack to build the SRT*.o files.

branches: 1.1.2;
Added sources for the sun2 boot blocks and other
sun68k-ish code, all of which ought to eventually
be shared with the sun3.