arch: Add _wchar_t typedef like other basic types

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>

arch/arm/include/types.h

@@ -66,6 +66,12 @@ typedef unsigned long long _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is 4 bytes */
 
 #if defined(__SIZE_TYPE__)

arch/avr/include/avr/types.h

@@ -67,6 +67,12 @@ typedef double double_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A (near) size is 2 bytes */
 
 #if defined(__SIZE_TYPE__)

arch/avr/include/avr32/types.h

@@ -64,6 +64,12 @@ typedef unsigned long long _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is 4 bytes */
 
 #if defined(__SIZE_TYPE__)

arch/hc/include/hc12/types.h

@@ -73,6 +73,12 @@ typedef unsigned long long _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is two bytes */
 
 #if defined(__SIZE_TYPE__)

arch/hc/include/hcs12/types.h

@@ -74,6 +74,12 @@ typedef unsigned long long _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is two bytes */
 
 #if defined(__SIZE_TYPE__)

arch/mips/include/types.h

@@ -64,6 +64,12 @@ typedef unsigned long long _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is 4 bytes */
 
 #if defined(__SIZE_TYPE__)

arch/misoc/include/types.h

@@ -64,6 +64,12 @@ typedef unsigned long long _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is 4 bytes */
 
 #if defined(__SIZE_TYPE__)

arch/or1k/include/types.h

@@ -67,6 +67,12 @@ typedef unsigned long long _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is 4 bytes */
 
 #if defined(__SIZE_TYPE__)

arch/renesas/include/m16c/types.h

@@ -66,6 +66,12 @@ typedef unsigned long long _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is 2 bytes */
 
 #if defined(__SIZE_TYPE__)

arch/renesas/include/rx65n/types.h

@@ -64,6 +64,12 @@ typedef unsigned long long _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is 4 bytes */
 
 #if defined(__SIZE_TYPE__)

arch/renesas/include/sh1/types.h

@@ -64,6 +64,12 @@ typedef unsigned long long _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is 4 bytes */
 
 #if defined(__SIZE_TYPE__)

arch/risc-v/include/types.h

@@ -72,6 +72,12 @@ typedef unsigned long long _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 #ifdef __LP64__
 /* A size is 8 bytes */
 

arch/sim/include/types.h

@@ -86,6 +86,12 @@ typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 #endif
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 #if defined(CONFIG_HOST_X86_64) && !defined(CONFIG_SIM_M32)
 /* 64-bit build on 64-bit machine: A size is 8 bytes */
 

arch/x86/include/i486/types.h

@@ -65,6 +65,12 @@ typedef unsigned long long _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is 4 bytes */
 
 #if defined(__SIZE_TYPE__)

arch/x86_64/include/intel64/types.h

@@ -65,6 +65,12 @@ typedef unsigned long      _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 #if defined(__SIZE_TYPE__)
 /* If __SIZE_TYPE__ is defined we define ssize_t based on size_t.
  * We simply change "unsigned" to "signed" for this single definition

arch/xtensa/include/types.h

@@ -64,6 +64,12 @@ typedef unsigned long long _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is 4 bytes */
 
 #if defined(__SIZE_TYPE__)

arch/z16/include/types.h

@@ -60,6 +60,12 @@ typedef unsigned int       _uint32_t;
 typedef _int32_t           _intmax_t;
 typedef _uint32_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is 4 bytes */
 
 #if defined(__SIZE_TYPE__)

arch/z80/include/ez80/types.h

@@ -84,6 +84,12 @@ typedef _int32_t           _intmax_t;
 typedef _uint32_t          _uintmax_t;
 #endif
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A pointer is 2 or 3 bytes, depending upon if the ez80 is in z80
  * compatibility mode or not
  *

arch/z80/include/z180/types.h

@@ -72,6 +72,12 @@ typedef unsigned long long _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is 2 bytes */
 
 #if defined(__SIZE_TYPE__)

arch/z80/include/z8/types.h

@@ -76,6 +76,12 @@ typedef unsigned long      _uint32_t;
 typedef _int32_t           _intmax_t;
 typedef _uint32_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is 2 bytes */
 
 #if defined(__SIZE_TYPE__)

arch/z80/include/z80/types.h

@@ -72,6 +72,12 @@ typedef unsigned long long _uint64_t;
 typedef _int64_t           _intmax_t;
 typedef _uint64_t          _uintmax_t;
 
+#if defined(__WCHAR_TYPE__)
+typedef __WCHAR_TYPE__     _wchar_t;
+#else
+typedef int                _wchar_t;
+#endif
+
 /* A size is 2 bytes */
 
 #if defined(__SIZE_TYPE__)

include/sys/types.h

@@ -161,13 +161,13 @@ typedef int16_t      key_t;
 typedef intptr_t     ptrdiff_t;
 
 #if !defined(__cplusplus)
-/* Wide, 16-bit character types.  wchar_t is a built-in type in C++ and
+/* Wide character types.  wchar_t is a built-in type in C++ and
  * its declaration here may cause compilation errors on some compilers.
  *
  * REVISIT: wchar_t belongs in stddef.h
  */
 
-typedef uint16_t     wchar_t;
+typedef _wchar_t     wchar_t;
 #endif
 
 /* wint_t