macOS build need platform version, same as xcode build

scripts/toolchain.lua

@@ -1037,6 +1037,7 @@ function toolchain(_buildDir, _libDir)
 			"-msse2",
 			"-Wunused-value",
 			"-Wundef",
+			"-target x86_64-apple-macos" .. (#macosPlatform > 0 and macosPlatform or "10.11"),
 		}
 		includedirs { path.join(bxDir, "include/compat/osx") }