Commit 44ee42c6bc

@@ -565,6 +565,7 @@ pub fn flushModule(self: *MachO, comp: *Compilation, prog_node: *std.Progress.No
         man.hash.addOptional(self.base.options.search_strategy);
         man.hash.addOptional(self.base.options.headerpad_size);
         man.hash.add(self.base.options.headerpad_max_install_names);
+        man.hash.add(self.base.options.gc_sections orelse false);
         man.hash.add(self.base.options.dead_strip_dylibs);
         man.hash.addListOfBytes(self.base.options.lib_dirs);
         man.hash.addListOfBytes(self.base.options.framework_dirs);
@@ -1003,6 +1004,12 @@ pub fn flushModule(self: *MachO, comp: *Compilation, prog_node: *std.Progress.No
                     try argv.append("-headerpad_max_install_names");
                 }
 
+                if (self.base.options.gc_sections) |is_set| {
+                    if (is_set) {
+                        try argv.append("-dead_strip");
+                    }
+                }
+
                 if (self.base.options.dead_strip_dylibs) {
                     try argv.append("-dead_strip_dylibs");
                 }

@@ -463,6 +463,7 @@ const usage_build_generic =
     \\  -search_dylibs_first           (Darwin) search `libx.dylib` in each dir in library search paths, then `libx.a`
     \\  -headerpad [value]             (Darwin) set minimum space for future expansion of the load commands in hexadecimal notation
     \\  -headerpad_max_install_names   (Darwin) set enough space as if all paths were MAXPATHLEN
+    \\  -dead_strip                    (Darwin) remove function and data that are unreachable by the entry point of exported symbols
     \\  -dead_strip_dylibs             (Darwin) remove dylibs that are unreachable by the entry point or exported symbols
     \\  --import-memory                (WebAssembly) import memory from the environment
     \\  --import-table                 (WebAssembly) import function table from the host environment
@@ -969,6 +970,8 @@ fn buildOutputType(
                         };
                     } else if (mem.eql(u8, arg, "-headerpad_max_install_names")) {
                         headerpad_max_install_names = true;
+                    } else if (mem.eql(u8, arg, "-dead_strip")) {
+                        linker_gc_sections = true;
                     } else if (mem.eql(u8, arg, "-dead_strip_dylibs")) {
                         dead_strip_dylibs = true;
                     } else if (mem.eql(u8, arg, "-T") or mem.eql(u8, arg, "--script")) {
@@ -1764,6 +1767,8 @@ fn buildOutputType(
                     };
                 } else if (mem.eql(u8, arg, "-headerpad_max_install_names")) {
                     headerpad_max_install_names = true;
+                } else if (mem.eql(u8, arg, "-dead_strip")) {
+                    linker_gc_sections = true;
                 } else if (mem.eql(u8, arg, "-dead_strip_dylibs")) {
                     dead_strip_dylibs = true;
                 } else if (mem.eql(u8, arg, "--gc-sections")) {