Merge pull request #779 from F0x1fy/master

Add flag -no-entry-point

src/build_settings.cpp

@@ -151,6 +151,7 @@ struct BuildContext {
 	bool   no_dynamic_literals;
 	bool   no_output_files;
 	bool   no_crt;
+	bool   no_entry_point;
 	bool   use_lld;
 	bool   vet;
 	bool   cross_compiling;

src/checker.cpp

@@ -4572,7 +4572,7 @@ void check_parsed_files(Checker *c) {
 
 
 	TIME_SECTION("check entry point");
-	if (build_context.build_mode == BuildMode_Executable) {
+	if (build_context.build_mode == BuildMode_Executable && !build_context.no_entry_point) {
 		Scope *s = c->info.init_scope;
 		GB_ASSERT(s != nullptr);
 		GB_ASSERT(s->flags&ScopeFlag_Init);

src/ir.cpp

@@ -12646,7 +12646,7 @@ void ir_gen_tree(irGen *s) {
 
 
 #if defined(GB_SYSTEM_WINDOWS)
-	if (build_context.build_mode == BuildMode_DynamicLibrary && !has_dll_main) {
+	if (build_context.build_mode == BuildMode_DynamicLibrary && !has_dll_main && !build_context.no_entry_point) {
 		// DllMain :: proc(inst: rawptr, reason: u32, reserved: rawptr) -> i32
 		String name = str_lit("DllMain");
 		Type *proc_params = alloc_type_tuple();
@@ -12717,7 +12717,7 @@ void ir_gen_tree(irGen *s) {
 		ir_emit_return(proc, v_one32);
 	}
 #endif
-	if (!(build_context.build_mode == BuildMode_DynamicLibrary && !has_dll_main)) {
+	if (!(build_context.build_mode == BuildMode_DynamicLibrary && !has_dll_main) && !build_context.no_entry_point) {
 		// main :: proc(argc: i32, argv: ^^u8) -> i32
 		String name = str_lit("main");
 
@@ -12796,7 +12796,7 @@ void ir_gen_tree(irGen *s) {
 	}
 
 #if defined(GB_SYSTEM_WINDOWS)
-	if (build_context.build_mode != BuildMode_DynamicLibrary && build_context.no_crt) {
+	if (build_context.build_mode != BuildMode_DynamicLibrary && build_context.no_crt && !build_context.no_entry_point) {
 		s->print_chkstk = true;
 
 		{

src/main.cpp

@@ -581,6 +581,7 @@ enum BuildFlagKind {
 	BuildFlag_NoBoundsCheck,
 	BuildFlag_NoDynamicLiterals,
 	BuildFlag_NoCRT,
+	BuildFlag_NoEntryPoint,
 	BuildFlag_UseLLD,
 	BuildFlag_Vet,
 	BuildFlag_UseLLVMApi,
@@ -681,6 +682,7 @@ bool parse_build_flags(Array<String> args) {
 	add_flag(&build_flags, BuildFlag_NoBoundsCheck,     str_lit("no-bounds-check"),     BuildFlagParam_None);
 	add_flag(&build_flags, BuildFlag_NoDynamicLiterals, str_lit("no-dynamic-literals"), BuildFlagParam_None);
 	add_flag(&build_flags, BuildFlag_NoCRT,             str_lit("no-crt"),              BuildFlagParam_None);
+	add_flag(&build_flags, BuildFlag_NoEntryPoint,      str_lit("no-entry-point"),      BuildFlagParam_None);
 	add_flag(&build_flags, BuildFlag_UseLLD,            str_lit("lld"),                 BuildFlagParam_None);
 	add_flag(&build_flags, BuildFlag_Vet,               str_lit("vet"),                 BuildFlagParam_None);
 	add_flag(&build_flags, BuildFlag_UseLLVMApi,        str_lit("llvm-api"),            BuildFlagParam_None);
@@ -1095,6 +1097,10 @@ bool parse_build_flags(Array<String> args) {
 							build_context.no_crt = true;
 							break;
 
+						case BuildFlag_NoEntryPoint:
+							build_context.no_entry_point = true;
+							break;
+
 						case BuildFlag_UseLLD:
 							build_context.use_lld = true;
 							break;