[PATCH v6] eal: define __SIZEOF_LONG__ when using MSVC

[Andre Muezerie <andremue@linux.microsoft.com>]

Macro __SIZEOF_LONG__ is not standardized and MSVC does not define it.
Therefore the errors below are seen with MSVC:

../lib/mldev/mldev_utils_scalar.c(465): error C2065:
    '__SIZEOF_LONG__': undeclared identifier
../lib/mldev/mldev_utils_scalar.c(478): error C2051:
    case expression not constant

../lib/mldev/mldev_utils_scalar_bfloat16.c(33): error C2065:
    '__SIZEOF_LONG__': undeclared identifier
../lib/mldev/mldev_utils_scalar_bfloat16.c(49): error C2051:
    case expression not constant

The fix is to define __SIZEOF_LONG__ in a common header when
MSVC is used.

Signed-off-by: Andre Muezerie <andremue@linux.microsoft.com>
---
 lib/eal/windows/include/rte_os.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/eal/windows/include/rte_os.h b/lib/eal/windows/include/rte_os.h
index d09adeb3b4..c787027866 100644
--- a/lib/eal/windows/include/rte_os.h
+++ b/lib/eal/windows/include/rte_os.h
@@ -56,4 +56,9 @@ struct { \
  */
 typedef long long ssize_t;
 
+#ifdef RTE_TOOLCHAIN_MSVC
+#define __SIZEOF_LONG__		(sizeof(long))
+#define __SIZEOF_LONG_LONG__	(sizeof(long long))
+#endif
+
 #endif /* _RTE_OS_H_ */
-- 
2.47.2.vfs.0.1