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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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Add explicit arch-specific modules.c rules to keep the build from
generating an incorrect common/modules.c. Otherwise the pattern
rules would cascade such that it'd look for $arch/modules.o which
turned into common/modules.c which triggered the gen rule.
My local testing of this code didn't catch this bug because of how
Automake manages .Po (dependency files) in incremental builds -- it
was adding extra rules that override the pattern rules which caused
the build to generate correct modules.c files. But when building
from a cold cache, the pattern rules would force common/modules.c to
be used leading to crashes at runtime.
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Copying & pasting the first rule missed updating the dep to the right
stamp file.
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Now that all ports (that use igen) build in the top-level and depend
on igen, we can move the conditional logic out of configure. We also
switch from noinst_LIBRARIES to EXTRA_LIBRARIES so that the library
is only built when needed (i.e. the igen tool is used).
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Now that all ports (other than ppc) build in the top-level, we don't
need to expand all the modules.c targets as a recursive dep. Each
port depends on their respective file now, and the ppc port doesn't
use it at all.
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This makes sure the arch-specific modules.c wildcard is matched and
not the common/%.c so that we compile it correctly. It also makes
sure each subdir has depdir logic enabled.
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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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Now that we build these objects in the top dir & generate modules.c
there, we don't need to generate them all first -- we can let the
normal dependency graph take care of building things in parallel.
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This simplifies the build logic and avoids an Automake bug where the
common_libcommon_a_OBJECTS variable isn't set in the arch libsim.a
DEPENDENCIES for targets that, alphabetically, come before "common".
We aren't affected by that bug with the current code, but as we move
things out of SIM_ALL_RECURSIVE_DEPS and rely on finer dependencies,
we will trip over it.
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Now that all ports (other than ppc) build in the top-level, we don't
need to mark the igen tool as a recursive dep. Each port depends on
the tool if it actually uses it, and ppc doesn't use it at all.
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Now that all ports (other than ppc) build in the top-level, we don't
need to expand all the hw-config.h targets as a recursive dep. Each
port depends on their respective header now, and the ppc port doesn't
use it at all.
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We don't have any recursive builds anymore, so we can drop this logic.
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Now that all (other than ppc) build in the top-level, this logic is
unused, so punt it all.
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Now that all (other than ppc) build in the top-level, we can disable
the recursive make calls to them. This speeds things up nicely.
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This is an internal developer target that isn't normally compiled,
but it can still be occasionally useful. Move it to the top-level
build so we can kill off common/Make-common.in.
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The arch-specific compiler flags are duplicated, but they'll be cleaned
up once we move all subdir compiles to the top-level.
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The arch-specific flags are only used by the arch-specific modules,
not the common/ files, so we can delete them too.
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The arch-specific compiler flags are duplicated, but they'll be cleaned
up once we move all subdir compiles to the top-level.
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The arch-specific compiler flags are duplicated, but they'll be cleaned
up once we move all subdir compiles to the top-level.
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The arch-specific flags are only used by the arch-specific modules,
not the common/ files, so we can delete them too.
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The arch-specific compiler flags are duplicated, but they'll be cleaned
up once we move all subdir compiles to the top-level.
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The arch-specific compiler flags are duplicated, but they'll be cleaned
up once we move all subdir compiles to the top-level.
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The arch-specific compiler flags are duplicated, but they'll be cleaned
up once we move all subdir compiles to the top-level.
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The arch-specific flags are only used by the arch-specific modules,
not the common/ files, so we can delete them too.
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The arch-specific flags are only used by the arch-specific modules,
not the common/ files, so we can delete them too.
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The arch-specific flags are only used by the arch-specific modules,
not the common/ files, so we can delete them too.
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The arch-specific flags are only used by the arch-specific modules,
not the common/ files, so we can delete them too.
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We can drop the arch-specific rules from the subdir as they're no
longer used.
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The arch-specific flags are only used by the arch-specific modules,
not the common/ files, so we can delete them too.
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The code so far has been assuming that we only compile common/ objects.
Now that we're ready to compile arch-specific objects, refactor some of
the flags & checks a bit to support both.
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Now that all arches create libsim.a from the top-level, we have full
access to their inputs, and can move the actual generation from the
subdir up to the top-level. This avoids recursive makes and will
help simplify state passing between the two.
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Now that all the subdirs handle their own builds, we can drop this
common rule as it's unused, and we don't want to use it anymore.
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