cc,wasi: support WASI reactors via -mexec-model flag.

Signed-off-by: Takeshi Yoneda <takeshi@tetrate.io>

1 files changed, 10 insertions, 0 deletions

diff --git a/src/main.zig b/src/main.zig
index 0b93f97726..8b1c640cfb 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -613,6 +613,7 @@ fn buildOutputType(
     var subsystem: ?std.Target.SubSystem = null;
     var major_subsystem_version: ?u32 = null;
     var minor_subsystem_version: ?u32 = null;
+    var wasi_exec_model: ?Compilation.WasiExecModel = null;
 
     var system_libs = std.ArrayList([]const u8).init(gpa);
     defer system_libs.deinit();
@@ -1254,6 +1255,13 @@ fn buildOutputType(
                     .framework => try frameworks.append(it.only_arg),
                     .nostdlibinc => want_native_include_dirs = false,
                     .strip => strip = true,
+                    .exec_model => {
+                        if (std.mem.eql(u8, it.only_arg, "reactor")) {
+                            wasi_exec_model = Compilation.WasiExecModel.reactor;
+                        } else if (std.mem.eql(u8, it.only_arg, "command")) {
+                            wasi_exec_model = Compilation.WasiExecModel.command;
+                        }
+                    },
                 }
             }
             // Parse linker args.
@@ -1969,6 +1977,7 @@ fn buildOutputType(
         .test_name_prefix = test_name_prefix,
         .disable_lld_caching = !have_enable_cache,
         .subsystem = subsystem,
+        .wasi_exec_model = wasi_exec_model,
     }) catch |err| {
         fatal("unable to create compilation: {s}", .{@errorName(err)});
     };
@@ -3341,6 +3350,7 @@ pub const ClangArgIterator = struct {
         red_zone,
         no_red_zone,
         strip,
+        exec_model,
     };
 
     const Args = struct {