Add s2wasm option to ignore unknown symbols

This is useful for bringup.

1 files changed, 8 insertions, 1 deletions

diff --git a/src/s2wasm-main.cpp b/src/s2wasm-main.cpp
index 2ef8060ac..c3f3d0a2f 100644
--- a/src/s2wasm-main.cpp
+++ b/src/s2wasm-main.cpp
@@ -27,6 +27,7 @@ using namespace cashew;
 using namespace wasm;
 
 int main(int argc, const char *argv[]) {
+  bool ignoreUnknownSymbols = false;
   Options options("s2wasm", "Link .s file into .wast");
   options
       .add("--output", "-o", "Output file (stdout if not specified)",
@@ -35,6 +36,11 @@ int main(int argc, const char *argv[]) {
              o->extra["output"] = argument;
              Colors::disable();
            })
+      .add("--ignore-unknown", "", "Ignore unknown symbols",
+           Options::Arguments::Zero,
+           [&ignoreUnknownSymbols](Options *, const std::string &) {
+             ignoreUnknownSymbols = true;
+           })
       .add("--global-base", "-g", "Where to start to place globals",
            Options::Arguments::One,
            [](Options *o, const std::string &argument) {
@@ -54,7 +60,8 @@ int main(int argc, const char *argv[]) {
                           ? std::stoull(options.extra["global-base"])
                           : 1;
   if (options.debug) std::cerr << "Global base " << globalBase << '\n';
-  S2WasmBuilder s2wasm(wasm, input.c_str(), options.debug, globalBase);
+  S2WasmBuilder s2wasm(wasm, input.c_str(), options.debug, globalBase,
+                       ignoreUnknownSymbols);
 
   if (options.debug) std::cerr << "Emscripten gluing..." << std::endl;
   std::stringstream meta;