diff --git a/tools/pikaByteCodeGen/main.c b/tools/pikaByteCodeGen/main.c
index 6614cb602..9bb2b6bca 100644
--- a/tools/pikaByteCodeGen/main.c
+++ b/tools/pikaByteCodeGen/main.c
@@ -10,24 +10,121 @@
 
 /* fake implement */
 PikaObj* __pikaMain;
-void New_PikaStdLib_SysObj(void){}
+void New_PikaStdLib_SysObj(void) {}
 void New_PikaStdData_List(void) {}
 void New_PikaStdData_Dict(void) {}
 void New_PikaStdData_Tuple(void) {}
 void New_PikaStdData_String(void) {}
 void New_PikaStdData_ByteArray(void) {}
-char* string_slice(Args * outBuffs, char* str, int start, int end){
+char* string_slice(Args* outBuffs, char* str, int start, int end) {
     return NULL;
 }
 
-void main() {
-    /* run pika_binder to bind C modules */
-    pika_binder();
+void help(char* argv0);
+int main(int argc, char** argv) {
+    int parc = argc - 1;
+    if (0 == parc) {
+        /* no input, default to main.py */
+        /* run pika_binder to bind C modules */
+        pika_binder();
+        PikaMaker* maker = New_PikaMaker();
+        pikaMaker_compileModuleWithDepends(maker, "main");
+        pikaMaker_linkCompiledModules(maker, "pikaModules.py.a");
+        obj_deinit(maker);
+        return 0;
+    }
 
-    PikaMaker* maker = New_PikaMaker();
-    pikaMaker_compileModuleWithDepends(maker, "main");
-    pikaMaker_linkCompiledModules(maker, "pikaModules.py.a");
-    obj_deinit(maker);
+    /* example: ./rust-msc-latest-linux -h | --help */
+    if (1 == parc) {
+        if (0 == strcmp(argv[1], "-h") || 0 == strcmp(argv[1], "--help")) {
+            help(argv[0]);
+            return 0;
+        }
+    }
 
-    return;
+    /* example: ./rust-msc-latest-linux main.py */
+    if (1 == parc) {
+        PikaMaker* maker = New_PikaMaker();
+        char* module_entry = argv[1];
+        /* remove subfix */
+        char* subfix = strrchr(module_entry, '.');
+        if (subfix) {
+            *subfix = '\0';
+        }
+        pikaMaker_compileModuleWithDepends(maker, module_entry);
+        pikaMaker_linkCompiledModules(maker, "pikaModules.py.a");
+        obj_deinit(maker);
+        return 0;
+    }
+
+    /* example ./rust-msc-latest-linux main.py -o out.a */
+    if (3 == parc) {
+        PikaMaker* maker = New_PikaMaker();
+        char* module_entry = argv[1];
+        /* remove subfix */
+        char* subfix = strrchr(module_entry, '.');
+        if (subfix) {
+            *subfix = '\0';
+        }
+        pikaMaker_compileModuleWithDepends(maker, module_entry);
+        pikaMaker_linkCompiledModules(maker, argv[2]);
+        obj_deinit(maker);
+        return 0;
+    }
+
+    /* example: ./rust-msc-latest-linux -c main.py */
+    if (2 == parc) {
+        if (0 == strcmp(argv[1], "-c")) {
+            Args buffs = {0};
+            /* compile only */
+            PikaMaker* maker = New_PikaMaker();
+            char* module_entry = argv[2];
+            char* module_out = strsCopy(&buffs, module_entry);
+            char* subfix = strrchr(module_out, '.');
+            if (subfix) {
+                *subfix = '\0';
+            }
+            module_out = strsAppend(&buffs, module_out, ".py.o");
+            printf("compiling %s to %s...\r\n", module_entry, module_out);
+            pikaCompileFileWithOutputName(module_out, module_entry);
+            strsDeinit(&buffs);
+            return 0;
+        }
+    }
+
+    /* example: ./rust-msc-latest-linux -c main.py -o main.py.o */
+    if (4 == parc) {
+        if (0 == strcmp(argv[1], "-c") && 0 == strcmp(argv[3], "-o")) {
+            /* compile only */
+            char* module_entry = argv[2];
+            printf("compiling %s to %s...\r\n", module_entry, argv[4]);
+            pikaCompileFileWithOutputName(argv[4], module_entry);
+            return 0;
+        }
+    }
+
+    /* no valid input */
+    printf("invalid input\r\n");
+    help(argv[0]);
+
+    return 0;
+}
+
+void help(char* argv0) {
+    Args buffs = {0};
+    char* exe = argv0;
+    printf(
+        "Usage:\r\n"
+        "    %s"
+        " - [Binding C modules and compile all from main.py]\r\n"
+        "    %s test.py"
+        " - [Compile all from test.py]\r\n"
+        "    %s test.py -o out.a"
+        " - [Compile all from test.py and link to out.a]\r\n"
+        "    %s -c test.py"
+        " - [Only compile test.py to test.py.o]\r\n"
+        "    %s -c test.py -o out.o"
+        " - [Only compile test.py to out.o]\r\n",
+        exe, exe, exe, exe, exe);
+    strsDeinit(&buffs);
 }