MFC r280980:

Ensure the cross assembler, linker and objcopy are used for the build32
stage, just like for the regular world stage.

Reviewed by: rodrigc, imp, bapt, emaste
Differential Revision: https://reviews.freebsd.org/D2187

r261567: Build a 32-bit libstand under sys/boot/

A 32-bit libstand is needed on 64-bit platforms for use by various
bootloaders. Previously only the 32-bit version was built, installed
as /usr/lib/libstand.a.

A new 64-bit libstand consumer will arrive in the near future, so move
the bootloader-specific 32-bit version to sys/boot/libstand32/.

Explicitly link against this version in the 32-bit loaders.

r261614: Build a 32-bit libstand under sys/boot/ for ppc64

This change is equivalent to r261567 for i386/amd64.

Relnotes: Yes
Sponsored by: The FreeBSD Foundation

MFC r260334:

Split the last gcc-specific flags off into CFLAGS.gcc. This also
removes the need to use -Qunused-arguments for clang throughout the
tree.

MFC r260369:

Apply band-aid for 32-bit compat libs failures after r260334: put back
-Qunused-arguments for clang for now, until I can figure out a way to
make it unneeded in all scenarios. Sorry about the breakage.

MFC r260095:

For sys/boot/i386 and sys/boot/pc98, separate flags to be passed
directly to the linker (LD_FLAGS) from flags passed indirectly, via the
compiler driver (LDFLAGS).

This is because several Makefiles under sys/boot/i386 and sys/boot/pc98
use ${LD} directly to link, and the normal LDFLAGS value should not be
used in these cases.

MFC r280980:

Ensure the cross assembler, linker and objcopy are used for the build32
stage, just like for the regular world stage.

Reviewed by: rodrigc, imp, bapt, emaste
Differential Revision: https://reviews.freebsd.org/D2187

r261567: Build a 32-bit libstand under sys/boot/

A 32-bit libstand is needed on 64-bit platforms for use by various
bootloaders. Previously only the 32-bit version was built, installed
as /usr/lib/libstand.a.

A new 64-bit libstand consumer will arrive in the near future, so move
the bootloader-specific 32-bit version to sys/boot/libstand32/.

Explicitly link against this version in the 32-bit loaders.

r261614: Build a 32-bit libstand under sys/boot/ for ppc64

This change is equivalent to r261567 for i386/amd64.

Relnotes: Yes
Sponsored by: The FreeBSD Foundation

MFC r260334:

Split the last gcc-specific flags off into CFLAGS.gcc. This also
removes the need to use -Qunused-arguments for clang throughout the
tree.

MFC r260369:

Apply band-aid for 32-bit compat libs failures after r260334: put back
-Qunused-arguments for clang for now, until I can figure out a way to
make it unneeded in all scenarios. Sorry about the breakage.

MFC r260095:

For sys/boot/i386 and sys/boot/pc98, separate flags to be passed
directly to the linker (LD_FLAGS) from flags passed indirectly, via the
compiler driver (LDFLAGS).

This is because several Makefiles under sys/boot/i386 and sys/boot/pc98
use ${LD} directly to link, and the normal LDFLAGS value should not be
used in these cases.