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X-HELO:	calimero.vinschen.de
Date:	Tue, 16 Jun 2015 11:34:24 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: Recent cygwin update is missing tchar header file
Message-ID:	<20150616093424.GA31537@calimero.vinschen.de>
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References:	<loom DOT 20150613T183650-316 AT post DOT gmane DOT org> <20150615164113 DOT GX31537 AT calimero DOT vinschen DOT de> <557F50B8 DOT 6010703 AT gmail DOT com>
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On Jun 16 06:24, JonY wrote:
> On 6/16/2015 00:41, Corinna Vinschen wrote:
> > Hi Jon,
> >=20
> > any idea what happened to tchar.h in the latest w32api update?
> >=20
>=20
> 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=20
  #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
=20
+#ifndef __CYGWIN__
+
 #define _ftcscat _tcscat
 #define _ftcschr _tcschr
 #define _ftcscpy _tcscpy
@@ -79,6 +81,8 @@ extern "C" {
=20
 #define _WConst_return _CONST_RETURN
=20
+#endif /* __CYGWIN__ */
+
 #ifdef _UNICODE
=20
 #ifdef __cplusplus
@@ -91,12 +95,16 @@ extern "C" {
 extern "C" {
 #endif
=20
+#ifndef __CYGWIN__
+
 #ifndef _WCTYPE_T_DEFINED
 #define _WCTYPE_T_DEFINED
   typedef unsigned short wint_t;
   typedef unsigned short wctype_t;
 #endif
=20
+#endif /* __CYGWIN__ */
+
 #ifndef __TCHAR_DEFINED
 #define __TCHAR_DEFINED
   typedef wchar_t _TCHAR;
@@ -118,6 +126,8 @@ extern "C" {
=20
 #define __T(x) L##x
=20
+#ifndef __CYGWIN__
+
 #define _tmain wmain
 #define _tWinMain wWinMain
 #define _tenviron _wenviron
@@ -470,6 +480,8 @@ extern "C" {
 #define _ttelldir	_wtelldir
 #define _tseekdir	_wseekdir
=20
+#endif /* __CYGWIN__ */
+
 #else
=20
 #ifdef __cplusplus
@@ -486,6 +498,8 @@ extern "C" {
=20
 #define __T(x) x
=20
+#ifndef __CYGWIN__
+
 #define _tmain main
 #define _tWinMain WinMain
 #ifdef _POSIX_
@@ -733,12 +747,16 @@ extern "C" {
=20
 #define _tsetlocale setlocale
=20
+#endif /* __CYGWIN__ */
+
 #ifdef _MBCS
=20
 #ifdef __cplusplus
 }
 #endif
=20
+#ifndef __CYGWIN__
+
 #include <mbstring.h>
=20
 #ifdef __cplusplus
@@ -939,6 +957,9 @@ extern "C" {
 #define _istlead _ismbblead
 #define _istleadbyte isleadbyte
 #define _istleadbyte_l _isleadbyte_l
+
+#endif /* __CYGWIN__ */
+
 #else
=20
 #ifndef __TCHAR_DEFINED
@@ -958,6 +979,8 @@ extern "C" {
 #endif
 #endif
=20
+#ifndef __CYGWIN__
+
 #define _tcschr strchr
 #define _tcscspn strcspn
 #define _tcsncat strncat
@@ -1096,6 +1119,8 @@ extern "C" {
 #endif
 #endif
=20
+#endif /* __CYGWIN__ */
+
 #define _T(x) __T(x)
 #define _TEXT(x) __T(x)
=20
@@ -1103,5 +1128,7 @@ extern "C" {
 }
 #endif
=20
+#ifndef __CYGWIN__
 #include <sec_api/tchar_s.h>
+#endif /* __CYGWIN__ */
 #endif


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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