diff options
Diffstat (limited to 'libpam/include/pam_cc_compat.h')
| -rw-r--r-- | libpam/include/pam_cc_compat.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/libpam/include/pam_cc_compat.h b/libpam/include/pam_cc_compat.h new file mode 100644 index 0000000..6919036 --- /dev/null +++ b/libpam/include/pam_cc_compat.h @@ -0,0 +1,66 @@ +/* + * Copyright (c) 2020 Dmitry V. Levin <ldv@altlinux.org> + */ + +#ifndef PAM_CC_COMPAT_H +#define PAM_CC_COMPAT_H + +#include "config.h" +#include <security/_pam_types.h> + +#if defined __clang__ && defined __clang_major__ && defined __clang_minor__ +# define PAM_CLANG_PREREQ(maj, min) \ + ((__clang_major__ << 16) + __clang_minor__ >= ((maj) << 16) + (min)) +#else +# define PAM_CLANG_PREREQ(maj, min) 0 +#endif + +#if PAM_GNUC_PREREQ(2, 7) +# define PAM_ATTRIBUTE_ALIGNED(arg) __attribute__((__aligned__(arg))) +#else +# define PAM_ATTRIBUTE_ALIGNED(arg) /* empty */ +#endif + +#if PAM_GNUC_PREREQ(4, 6) +# define DIAG_PUSH_IGNORE_CAST_QUAL \ + _Pragma("GCC diagnostic push"); \ + _Pragma("GCC diagnostic ignored \"-Wcast-qual\"") +# define DIAG_POP_IGNORE_CAST_QUAL \ + _Pragma("GCC diagnostic pop") +# define DIAG_PUSH_IGNORE_CAST_ALIGN \ + _Pragma("GCC diagnostic push"); \ + _Pragma("GCC diagnostic ignored \"-Wcast-align\"") +# define DIAG_POP_IGNORE_CAST_ALIGN \ + _Pragma("GCC diagnostic pop") +#elif PAM_CLANG_PREREQ(2, 6) +# define DIAG_PUSH_IGNORE_CAST_QUAL \ + _Pragma("clang diagnostic push"); \ + _Pragma("clang diagnostic ignored \"-Wcast-qual\"") +# define DIAG_POP_IGNORE_CAST_QUAL \ + _Pragma("clang diagnostic pop") +# define DIAG_PUSH_IGNORE_CAST_ALIGN \ + _Pragma("clang diagnostic push"); \ + _Pragma("clang diagnostic ignored \"-Wcast-align\"") +# define DIAG_POP_IGNORE_CAST_ALIGN \ + _Pragma("clang diagnostic pop") +#else +# define DIAG_PUSH_IGNORE_CAST_QUAL /* empty */ +# define DIAG_POP_IGNORE_CAST_QUAL /* empty */ +# define DIAG_PUSH_IGNORE_CAST_ALIGN /* empty */ +# define DIAG_POP_IGNORE_CAST_ALIGN /* empty */ +#endif + +/* + * Evaluates to + * 1, if the given two types are known to be the same + * 0, otherwise. + */ +#if PAM_GNUC_PREREQ(3, 0) +# define PAM_IS_SAME_TYPE(x_, y_) \ + __builtin_types_compatible_p(__typeof__(x_), __typeof__(y_)) +#else +/* Cannot tell whether these types are the same. */ +# define PAM_IS_SAME_TYPE(x_, y_) 0 +#endif + +#endif /* PAM_CC_COMPAT_H */ |