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/*
* 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 */
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