Merge pull request #2380 from flysand7/master

Add -no-thread-local flag

src/build_settings.cpp

@@ -275,6 +275,7 @@ struct BuildContext {
 	bool   no_output_files;
 	bool   no_crt;
 	bool   no_entry_point;
+	bool   no_thread_local;
 	bool   use_lld;
 	bool   vet;
 	bool   vet_extra;

src/check_decl.cpp

@@ -1143,9 +1143,12 @@ gb_internal void check_global_variable_decl(CheckerContext *ctx, Entity *&e, Ast
 
 	if (is_arch_wasm() && e->Variable.thread_local_model.len != 0) {
 		e->Variable.thread_local_model.len = 0;
-		// NOTE(bill): ignore this message for the time begin
+		// NOTE(bill): ignore this message for the time being
 		// error(e->token, "@(thread_local) is not supported for this target platform");
 	}
+	if(build_context.no_thread_local) {
+		e->Variable.thread_local_model.len = 0;
+	}
 
 	String context_name = str_lit("variable declaration");
 

src/main.cpp

@@ -634,6 +634,7 @@ enum BuildFlagKind {
 	BuildFlag_Microarch,
 	BuildFlag_TargetFeatures,
 	BuildFlag_MinimumOSVersion,
+	BuildFlag_NoThreadLocal,
 
 	BuildFlag_RelocMode,
 	BuildFlag_DisableRedZone,
@@ -794,6 +795,7 @@ gb_internal bool parse_build_flags(Array<String> args) {
 	add_flag(&build_flags, BuildFlag_Debug,                   str_lit("debug"),                     BuildFlagParam_None,    Command__does_check);
 	add_flag(&build_flags, BuildFlag_DisableAssert,           str_lit("disable-assert"),            BuildFlagParam_None,    Command__does_check);
 	add_flag(&build_flags, BuildFlag_NoBoundsCheck,           str_lit("no-bounds-check"),           BuildFlagParam_None,    Command__does_check);
+	add_flag(&build_flags, BuildFlag_NoThreadLocal,           str_lit("no-thread-local"),           BuildFlagParam_None,    Command__does_check);
 	add_flag(&build_flags, BuildFlag_NoDynamicLiterals,       str_lit("no-dynamic-literals"),       BuildFlagParam_None,    Command__does_check);
 	add_flag(&build_flags, BuildFlag_NoCRT,                   str_lit("no-crt"),                    BuildFlagParam_None,    Command__does_build);
 	add_flag(&build_flags, BuildFlag_NoEntryPoint,            str_lit("no-entry-point"),            BuildFlagParam_None,    Command__does_check &~ Command_test);
@@ -1312,6 +1314,9 @@ gb_internal bool parse_build_flags(Array<String> args) {
 						case BuildFlag_NoEntryPoint:
 							build_context.no_entry_point = true;
 							break;
+						case BuildFlag_NoThreadLocal:
+							build_context.no_thread_local = true;
+							break;
 						case BuildFlag_UseLLD:
 							build_context.use_lld = true;
 							break;
@@ -2064,6 +2069,10 @@ gb_internal void print_show_help(String const arg0, String const &command) {
 		print_usage_line(2, "Disables automatic linking with the C Run Time");
 		print_usage_line(0, "");
 
+		print_usage_line(1, "-no-thread-local");
+		print_usage_line(2, "Ignore @thread_local attribute, effectively treating the program as if it is single-threaded");
+		print_usage_line(0, "");
+
 		print_usage_line(1, "-lld");
 		print_usage_line(2, "Use the LLD linker rather than the default");
 		print_usage_line(0, "");