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Add WASI platform support.

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This includes the following significant changes:
  * Patching ezsat and minisat to disable resource limiting code
    on WASM/WASI, since the POSIX functions they use are unavailable.
  * Adding a new definition, YOSYS_DISABLE_SPAWN, present if platform
    does not support spawning subprocesses (i.e. Emscripten or WASI).
    This definition hides the definition of `run_command()`.
  * Adding a new Makefile flag, DISABLE_SPAWN, present in the same
    condition. This flag disables all passes that require spawning
    subprocesses for their function.
This commit is contained in:
whitequark 2019-11-11 09:23:06 +00:00
parent bc380b0b56
commit b43c282e4e
17 changed files with 167 additions and 30 deletions
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3
passes/sat/Makefile.inc
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@ -13,5 +13,6 @@ OBJS += passes/sat/fmcombine.o
OBJS += passes/sat/mutate.o
OBJS += passes/sat/cutpoint.o
OBJS += passes/sat/fminit.o
ifeq ($(DISABLE_SPAWN),0)
OBJS += passes/sat/qbfsat.o
endif