Add PREGENERATED_TARG_INFO for cross-compilation#48
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noafroboy wants to merge 1 commit intoopen64-compiler:developfrom
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Add PREGENERATED_TARG_INFO for cross-compilation#48noafroboy wants to merge 1 commit intoopen64-compiler:developfrom
noafroboy wants to merge 1 commit intoopen64-compiler:developfrom
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The targ_info build generates architecture-specific headers and source files by running host-tool generators (isa_gen, targ_si_gen, etc.). When cross-compiling — for example, building an x86_64 compiler on ARM64 via Rosetta or QEMU — these generators may crash because they execute x86_64 code under emulation. Add a PREGENERATED_TARG_INFO variable that, when set to a directory path, causes the build to copy pre-generated files from that directory instead of running the generators. This reuses the existing COPYSOURCEDIR mechanism already in place for MIPS64 cross-compilation. Usage: make PREGENERATED_TARG_INFO=/path/to/generated/files The pre-generated files can be produced by running the targ_info build natively on the target architecture, then copying the generated .h and .c files. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
PREGENERATED_TARG_INFOvariable toosprey/common/targ_info/Makefile.gbasethat overridesCOPYSOURCEDIRto use pre-generated header/source files instead of running the targ_info generatorsMotivation
The targ_info build runs host-tool generators (
isa_gen,targ_si_gen, etc.) that produce architecture-specific.hand.cfiles. When cross-compiling — for example, building an x86_64 compiler on ARM64 via Rosetta or QEMU — these generators may crash under emulation.This reuses the existing
COPYSOURCEDIRmechanism (already used for MIPS64-on-IA32 cross-compilation) and exposes it as a user-settable variable:The pre-generated files can be produced by running the targ_info build natively on the target architecture, then copying the output
.hand.cfiles.Test plan
PREGENERATED_TARG_INFO=/path— copies files from directory, skips generators🤖 Generated with Claude Code