Add -std=c11 option which sets __STDC_VERSION__ to 201112L and allows to implement c11 features conditionally

Christian Jullien committed 7 years ago

Commit a3a29171 parent 337dc843 files · +14 −2Browse files

Unified · Split

3 files

@@ -733,6 +733,7 @@ LIBTCCAPI TCCState *tcc_new(void) · 732 unmodified lines
733	733	++nb_states;
734	734
735	735	s->nocommon = 1;
	736	+ s->cversion = 199901; /* default unless -std=c11 is supplied */
736	737	s->warn_implicit_function_declaration = 1;
737	738	s->ms_extensions = 1;
738	739
@@ -1790,8 +1791,16 @@ reparse: · 1051 unmodified lines
1790	1791	s->static_link = 1;
1791	1792	break;
1792	1793	case TCC_OPTION_std:
1793		− /* silently ignore, a current purpose:
1794		− allow to use a tcc as a reference compiler for "make test" */
	1794	+ if (*optarg == '=') {
	1795	+ ++optarg;
	1796	+ if (strcmp(optarg, "c11") == 0) {
	1797	+ tcc_undefine_symbol(s, "__STDC_VERSION__");
	1798	+ tcc_define_symbol(s, "__STDC_VERSION__", "201112L");
	1799	+ s->cversion = 201112;
	1800	+ }
	1801	+ }
	1802	+ /* silently ignore other values, a current purpose:
	1803	+ allow to use a tcc as a reference compiler for "make test" */
1795	1804	break;
1796	1805	case TCC_OPTION_shared:
1797	1806	x = TCC_OUTPUT_DLL;

tcc.c+2−0

@@ -33,6 +33,8 @@ static const char help[] = · 32 unmodified lines
33	33	" -o outfile set output filename\n"
34	34	" -run run compiled source\n"
35	35	" -fflag set or reset (with 'no-' prefix) 'flag' (see tcc -hh)\n"
	36	+ " -std=c99 Conform to the ISO 1999 C standard (default).\n"
	37	+ " -std=c11 Conform to the ISO 2011 C standard.\n"
36	38	" -Wwarning set or reset (with 'no-' prefix) 'warning' (see tcc -hh)\n"
37	39	" -w disable all warnings\n"
38	40	" -v -vv show version, show search paths or loaded files\n"

tcc.h+1−0

@@ -651,6 +651,7 @@ struct TCCState { · 650 unmodified lines
651	651	int rdynamic; /* if true, all symbols are exported */
652	652	int symbolic; /* if true, resolve symbols in the current module first */
653	653	int filetype; /* file type for compilation (NONE,C,ASM) */
	654	+ int cversion; /* supported C ISO version, 199901 (the default), 201112, ... */
654	655
655	656	char tcc_lib_path; / CONFIG_TCCDIR or -B option */
656	657	char soname; / as specified on the command line (-soname) */

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