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This has never been installed, and it's not clear anyone cares about
it in the local build dir (when the main program is sim/ppc/run), so
drop all the logic to simplify.
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Rather than force this to be built ahead of time for all targets,
move the dep to the ppc code since it's the only user of it now.
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This commit is the result of running the gdb/copyright.py script,
which automated the update of the copyright year range for all
source files managed by the GDB project to be updated to include
year 2023.
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Simplify the build by moving the generation of these files from
build-time (via dgen.c that we have to compile & execute on the
build system) to maintainer/release mode (via spreg-gen.py that
we only ever execute when the spreg table actually changes). It
speeds up the build process and makes it easier for us to reason
about & review changes to the code generator.
The tool is renamed from "dgen" because it's hardcoded to only
generated spreg files. It isn't a generalized tool for creating
lookup tables.
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This doesn't matter right now, but it will as we add more flags to
the recursive make step to pass state down.
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Automake will run each subdir individually before moving on to the next
one. This means that the linking phase, a single threaded process, will
not run in parallel with anything else. When we have to link ~32 ports,
that's 32 link steps that don't take advantage of parallel systems. On
my really old 4-core system, this cuts a multi-target build from ~60 sec
to ~30 sec. We eventually want to move all compile+link steps to this
common dir anyways, so might as well move linking now for a nice speedup.
We use noinst_PROGRAMS instead of bin_PROGRAMS because we're taking care
of the install ourselves rather than letting automake process it.
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This commit brings all the changes made by running gdb/copyright.py
as per GDB's Start of New Year Procedure.
For the avoidance of doubt, all changes in this commits were
performed by the script.
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The ## marker tells automake to not include the comment in its
generated output, so use that in most places where the comment
only makes sense in the inputs.
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