branches: 1.1.2; 1.1.50;
for each $MACHINE_ARCH we have compat libraries to build for, give a list
of ABIs to target. for amd64 and sparc64, we use the old i386 and sparc
subdirectories. for mips64, we build both o32 and n64 libraries.

these files are not yet used, but will be shortly.

compat: mips64/64: Try to fix `*_MACHINE_ARCH`; use `mipsn64e[bl]`

branches: 1.13.8;
mips64 -> o32 64
mipsn64 -> o32 n32

branches: 1.12.4;
fix a comment.

Reduce the amount that's include protected.

Prevent multi inclusion

build compat versions of libgomp for everything except mips N64 (for now.)

build GMP, MPFR and MPC as private libraries just for GCC. don't
install the headers or librarys into the system.

someone who really cares could make them shlibs again and have them
installed into eg, /usr/lib/gcc. not convinced it is worth it.

make mips64 builds of gmp and mpfr work including compat libs.

the gmp/mpfr subdirs are mipsel/mipseb.

- add support for src/compat builds
- use .include not .sinclude for the arch Makefile.inc file
- clean up

Avoid using ${NETBSDSRCDIR} by using ${.PARSEDIR} like I did for amd64/i386

fix the previous: default the target depending the MACHINE_ARCH.

Use GNU linker emul names which really exist.

XXX Assume big endian for now. Better than build failure.

branches: 1.1.2;
for each $MACHINE_ARCH we have compat libraries to build for, give a list
of ABIs to target. for amd64 and sparc64, we use the old i386 and sparc
subdirectories. for mips64, we build both o32 and n64 libraries.

these files are not yet used, but will be shortly.