diff options
Diffstat (limited to 'data/c.m4')
| -rw-r--r-- | data/c.m4 | 33 |
1 files changed, 26 insertions, 7 deletions
@@ -205,13 +205,32 @@ m4_define([b4_table_value_equals], # b4_attribute_define # ------------------- -# Provide portability for __attribute__. +# Provide portable compiler "attributes". m4_define([b4_attribute_define], -[#ifndef __attribute__ -/* This feature is available in gcc versions 2.5 and later. */ -# if (! defined __GNUC__ || __GNUC__ < 2 \ - || (__GNUC__ == 2 && __GNUC_MINOR__ < 5)) -# define __attribute__(Spec) /* empty */ +[#ifndef YY_ATTRIBUTE +# if (defined __GNUC__ \ + && (2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__))) \ + || defined __SUNPRO_C && 0x5110 <= __SUNPRO_C +# define YY_ATTRIBUTE(Spec) __attribute__(Spec) +# else +# define YY_ATTRIBUTE(Spec) /* empty */ +# endif +#endif + +#ifndef YY_ATTRIBUTE_PURE +# define YY_ATTRIBUTE_PURE YY_ATTRIBUTE ((__pure__)) +#endif + +#ifndef YY_ATTRIBUTE_UNUSED +# define YY_ATTRIBUTE_UNUSED YY_ATTRIBUTE ((__unused__)) +#endif + +#if !defined _Noreturn \ + && (!defined __STDC_VERSION__ || __STDC_VERSION__ < 201112) +# if defined _MSC_VER && 1200 <= _MSC_VER +# define _Noreturn __declspec (noreturn) +# else +# define _Noreturn YY_ATTRIBUTE ((__noreturn__)) # endif #endif @@ -783,7 +802,7 @@ m4_define([b4_yy_location_print_define], /* Print *YYLOCP on YYO. Private, do not rely on its existence. */ -__attribute__((__unused__)) +YY_ATTRIBUTE_UNUSED ]b4_function_define([yy_location_print_], [static unsigned], [[FILE *yyo], [yyo]], |