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Re: Recent cygwin update is missing tchar header file


On 6/16/2015 17:34, Corinna Vinschen wrote:
> On Jun 16 06:24, JonY wrote:
>> On 6/16/2015 00:41, Corinna Vinschen wrote:
>>> Hi Jon,
>>>
>>> any idea what happened to tchar.h in the latest w32api update?
>>>
>>
>> tchar.h seems to be part of the CRT headers rather than the w32api
>> headers. I'll see getting it installed regardless.
> 
> Hmm, that may not be as easy as it sounds.
> 
> I checked the w32api-headers 3.3 0 version and there was no tchar.h in
> it either, so this isn't new.  I assume the last time the package has
> been built successfully was against w32api headers from Mingw.org.
> 
> tchar.h in Mingw-w64 pulls a rat tail of other headers in:
> 
>   $ grep '#include' tchar.h 
>   #include <crtdefs.h>
>   #include <wchar.h>
>   #include <string.h>
>   #include <mbstring.h>
>   #include <sec_api/tchar_s.h>
> 
> AFAICS, oledlg.h pulls in tchar.h
> solely to get the definition of the macro _TEXT.
> 
> So we are better off to define our own tchar.h, or, even better, to
> tweak tchar.h for Cygwin upstream.  If we exclude everything except for
> the definitions of _T, _TEXT, _TEOF, and the types like _TCHAR etc., we
> should be good.
> 
> Something like this (untested):
> 
> diff --git a/mingw-w64-headers/crt/tchar.h b/mingw-w64-headers/crt/tchar.h
> index 3567085..c82634a 100644
> --- a/mingw-w64-headers/crt/tchar.h
> +++ b/mingw-w64-headers/crt/tchar.h
> @@ -16,6 +16,8 @@
>  extern "C" {
>  #endif
>  
> +#ifndef __CYGWIN__
> +
>  #define _ftcscat _tcscat
>  #define _ftcschr _tcschr
>  #define _ftcscpy _tcscpy
> @@ -79,6 +81,8 @@ extern "C" {
>  
>  #define _WConst_return _CONST_RETURN
>  
> +#endif /* __CYGWIN__ */
> +
>  #ifdef _UNICODE
>  
>  #ifdef __cplusplus
> @@ -91,12 +95,16 @@ extern "C" {
>  extern "C" {
>  #endif
>  
> +#ifndef __CYGWIN__
> +
>  #ifndef _WCTYPE_T_DEFINED
>  #define _WCTYPE_T_DEFINED
>    typedef unsigned short wint_t;
>    typedef unsigned short wctype_t;
>  #endif
>  
> +#endif /* __CYGWIN__ */
> +
>  #ifndef __TCHAR_DEFINED
>  #define __TCHAR_DEFINED
>    typedef wchar_t _TCHAR;
> @@ -118,6 +126,8 @@ extern "C" {
>  
>  #define __T(x) L##x
>  
> +#ifndef __CYGWIN__
> +
>  #define _tmain wmain
>  #define _tWinMain wWinMain
>  #define _tenviron _wenviron
> @@ -470,6 +480,8 @@ extern "C" {
>  #define _ttelldir	_wtelldir
>  #define _tseekdir	_wseekdir
>  
> +#endif /* __CYGWIN__ */
> +
>  #else
>  
>  #ifdef __cplusplus
> @@ -486,6 +498,8 @@ extern "C" {
>  
>  #define __T(x) x
>  
> +#ifndef __CYGWIN__
> +
>  #define _tmain main
>  #define _tWinMain WinMain
>  #ifdef _POSIX_
> @@ -733,12 +747,16 @@ extern "C" {
>  
>  #define _tsetlocale setlocale
>  
> +#endif /* __CYGWIN__ */
> +
>  #ifdef _MBCS
>  
>  #ifdef __cplusplus
>  }
>  #endif
>  
> +#ifndef __CYGWIN__
> +
>  #include <mbstring.h>
>  
>  #ifdef __cplusplus
> @@ -939,6 +957,9 @@ extern "C" {
>  #define _istlead _ismbblead
>  #define _istleadbyte isleadbyte
>  #define _istleadbyte_l _isleadbyte_l
> +
> +#endif /* __CYGWIN__ */
> +
>  #else
>  
>  #ifndef __TCHAR_DEFINED
> @@ -958,6 +979,8 @@ extern "C" {
>  #endif
>  #endif
>  
> +#ifndef __CYGWIN__
> +
>  #define _tcschr strchr
>  #define _tcscspn strcspn
>  #define _tcsncat strncat
> @@ -1096,6 +1119,8 @@ extern "C" {
>  #endif
>  #endif
>  
> +#endif /* __CYGWIN__ */
> +
>  #define _T(x) __T(x)
>  #define _TEXT(x) __T(x)
>  
> @@ -1103,5 +1128,7 @@ extern "C" {
>  }
>  #endif
>  
> +#ifndef __CYGWIN__
>  #include <sec_api/tchar_s.h>
> +#endif /* __CYGWIN__ */
>  #endif
> 
> 
> Corinna
> 

Kai, Ping.


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