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mdbx: add workaround for old MSVC and/or old Windows SDK.

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Resolves https://github.com/erthink/libmdbx/issues/265.

Change-Id: I295b5d9d5ecd670ccf258791bf87379a3ca17f21
This commit is contained in:
Leonid Yuriev
2022-01-31 23:29:03 +03:00
parent 1c409a38d3
commit 79e1cc3bbc
4 changed files with 62 additions and 28 deletions
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21
src/osal.h
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@@ -56,18 +56,21 @@
#include <string.h>
#include <time.h>
/* C11 stdalign.h */
/* C11' alignas() */
#if __has_include(<stdalign.h>)
#include <stdalign.h>
#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
#define alignas(N) _Alignas(N)
#elif defined(_MSC_VER)
#define alignas(N) __declspec(align(N))
#elif __has_attribute(__aligned__) || defined(__GNUC__)
#define alignas(N) __attribute__((__aligned__(N)))
#else
#error "FIXME: Required _alignas() or equivalent."
#endif
#if defined(alignas) || defined(__cplusplus)
#define MDBX_ALIGNAS(N) alignas(N)
#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
#define MDBX_ALIGNAS(N) _Alignas(N)
#elif defined(_MSC_VER)
#define MDBX_ALIGNAS(N) __declspec(align(N))
#elif __has_attribute(__aligned__) || defined(__GNUC__)
#define MDBX_ALIGNAS(N) __attribute__((__aligned__(N)))
#else
#error "FIXME: Required alignas() or equivalent."
#endif /* MDBX_ALIGNAS */
/*----------------------------------------------------------------------------*/
/* Systems includes */