ignore symbol main for .dylib; skip libtcc1 for tccrun mode;

Makefile

@@ -252,7 +252,7 @@ libtcc.dylib: $(LIBTCC_OBJ)
 
 # OSX libtcc.dylib (without rpath/ prefix)
 libtcc.osx: $(LIBTCC_OBJ)
-	$S$(CC) -shared -install_name libtcc.dylib -o libtcc.dylib $^ $(LDFLAGS) 
+	$S$(CC) -shared -o libtcc.dylib $^ $(LDFLAGS) 
 
 # windows dynamic libtcc library
 libtcc.dll : $(LIBTCC_OBJ)

tccelf.c

@@ -1457,7 +1457,10 @@ ST_FUNC void tcc_add_runtime(TCCState *s1)
                 tcc_add_btstub(s1);
         }
 #endif
-        tcc_add_support(s1, TCC_LIBTCC1);
+        /* libtcc1 is not needed when tccrun mode */
+        if (s1->output_type != TCC_OUTPUT_MEMORY){
+            tcc_add_support(s1, TCC_LIBTCC1);
+        }
 #ifndef TCC_TARGET_MACHO
         /* add crt end if not memory output */
         if (s1->output_type != TCC_OUTPUT_MEMORY)

tccmacho.c

@@ -813,8 +813,12 @@ ST_FUNC int macho_output_file(TCCState *s1, const char *filename)
         Section *s;
         collect_sections(s1, &mo);
         relocate_syms(s1, s1->symtab, 0);
-        mo.ep->entryoff = get_sym_addr(s1, "main", 1, 1)
-                            - get_segment(&mo, 1)->vmaddr;
+				if (s1->output_type == TCC_OUTPUT_DLL) {
+					/* TODO: more handling for .dylib ? */
+				} else {
+					mo.ep->entryoff = get_sym_addr(s1, "main", 1, 1)
+						- get_segment(&mo, 1)->vmaddr;
+				}
         if (s1->nb_errors)
           goto do_ret;