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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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4
passes/cmds/cover.cc
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@ -101,8 +101,8 @@ struct CoverPass : public Pass {
const std::string &filename = args[++argidx];
FILE *f = nullptr;
if (args[argidx-1] == "-d") {
#ifdef _WIN32
log_cmd_error("The 'cover -d' option is not supported on win32.\n");
#if defined(_WIN32) || defined(__wasm)
log_cmd_error("The 'cover -d' option is not supported on this platform.\n");
#else
char filename_buffer[4096];
snprintf(filename_buffer, 4096, "%s/yosys_cover_%d_XXXXXX.txt", filename.c_str(), getpid());