Check for IAR in gmtime macros
diff --git a/include/mbedtls/threading.h b/include/mbedtls/threading.h
index 71538c0..dc724ee 100644
--- a/include/mbedtls/threading.h
+++ b/include/mbedtls/threading.h
@@ -106,8 +106,9 @@
extern mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex;
#endif
#if defined(MBEDTLS_HAVE_TIME_DATE)
-#if !defined(_WIN32) && (defined(unix) || defined(__unix) || \
- defined(__unix__) || (defined(__APPLE__) && defined(__MACH__)))
+#if !defined(_WIN32) && !defined(__IAR_SYSTEMS_ICC__) && (defined(unix) || \
+ defined(__unix) || defined(__unix__) || (defined(__APPLE__) && \
+ defined(__MACH__)))
#include <unistd.h>
#if !defined(_POSIX_VERSION) || 200112L > _POSIX_THREAD_SAFE_FUNCTIONS
/*
@@ -117,7 +118,8 @@
*/
extern mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex;
#endif /* !_POSIX_VERSION || 200112L > _POSIX_THREAD_SAFE_FUNCTIONS */
-#endif /* !_WIN32 && (unix || __unix || __unix__ || (__APPLE__ && __MACH__)) */
+#endif /* !_WIN32 && !__IAR_SYSTEMS_ICC__ && (unix || __unix || __unix__ ||
+ * (__APPLE__ && __MACH__)) */
#endif /* MBEDTLS_HAVE_TIME_DATE */
#endif /* MBEDTLS_THREADING_C */