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-rw-r--r--nuttx/include/sys/types.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/nuttx/include/sys/types.h b/nuttx/include/sys/types.h
index f505c6afa..0c6f72394 100644
--- a/nuttx/include/sys/types.h
+++ b/nuttx/include/sys/types.h
@@ -165,9 +165,14 @@ typedef unsigned int id_t;
typedef intptr_t ptrdiff_t;
-/* Wide, 16-bit character types */
+/* Wide, 16-bit character types. wchar_t is a built-in type in C++ and
+ * its declaration here may cause compilation errors on some compilers
+ * if -DCONFIG_WCHAR_BUILTIN is not included in the CXXFLAGS.
+ */
+#ifndef CONFIG_WCHAR_BUILTIN
typedef uint16_t wchar_t;
+#endif
/* blkcnt_t and off_t are signed integer types.
*