diff --git a/libtcc.c b/libtcc.c
index 949a7ced..0130b505 100644
--- a/libtcc.c
+++ b/libtcc.c
@@ -1486,7 +1486,8 @@ enum {
     TCC_OPTION_x,
     TCC_OPTION_ar,
     TCC_OPTION_impdef,
-    TCC_OPTION_C
+    TCC_OPTION_C,
+    TCC_OPTION_arch
 };
 
 #define TCC_OPTION_HAS_ARG 0x0001
@@ -1557,6 +1558,9 @@ static const TCCOption tcc_options[] = {
 #ifdef TCC_TARGET_PE
     { "impdef", TCC_OPTION_impdef, 0},
 #endif
+//#ifdef TCC_TARGET_MACHO
+    { "arch", TCC_OPTION_arch, TCC_OPTION_HAS_ARG },
+//#endif
     { "C", TCC_OPTION_C, 0},
     { NULL, 0, 0 },
 };
@@ -1992,6 +1996,7 @@ reparse:
         case TCC_OPTION_pipe:
         case TCC_OPTION_s:
         case TCC_OPTION_C:
+        case TCC_OPTION_arch:
             /* ignored */
             break;
         default:
diff --git a/tcc.c b/tcc.c
index 481eb27c..e16cde59 100644
--- a/tcc.c
+++ b/tcc.c
@@ -77,6 +77,9 @@ static const char help[] =
     "  -MF file     specify dependency file name\n"
 #if defined(TCC_TARGET_I386) || defined(TCC_TARGET_X86_64)
     "  -m32/64      defer to i386/x86_64 cross compiler\n"
+#endif
+#if defined(TCC_TARGET_MACHO) || defined(TCC_TARGET_X86_64)
+    "  -arch        set macos target achitecture (ignored, always x86_64)\n"
 #endif
     "Tools:\n"
     "  create library  : tcc -ar [rcsv] lib.a files\n"