Remove obsolete wxUSE_IOSTREAMH option

This is always 0 for any still supported compiler, so remove the option
and configure checks for it.

Still define it as 0 for compatibility, just in case it's used outside
of the library.

acinclude.m4

@@ -184,30 +184,6 @@ dnl ===========================================================================
 dnl C++ features test
 dnl ===========================================================================
 
-dnl ---------------------------------------------------------------------------
-dnl WX_CPP_NEW_HEADERS checks whether the compiler has "new" <iostream> header
-dnl or only the old <iostream.h> one - it may be generally assumed that if
-dnl <iostream> exists, the other "new" headers (without .h) exist too.
-dnl
-dnl call WX_CPP_NEW_HEADERS(action-if-true, action-if-false)
-dnl ---------------------------------------------------------------------------
-
-AC_DEFUN([WX_CPP_NEW_HEADERS],
-[
-    AC_LANG_SAVE
-    AC_LANG_CPLUSPLUS
-
-    AC_CHECK_HEADERS([iostream],,, [ ])
-
-    if test "$ac_cv_header_iostream" = "yes" ; then
-      ifelse([$1], , :, [$1])
-    else
-      ifelse([$2], , :, [$2])
-    fi
-
-    AC_LANG_RESTORE
-])
-
 dnl ---------------------------------------------------------------------------
 dnl WX_CHECK_FUNCS(FUNCTIONS...,
 dnl                [ACTION-IF-FOUND],

build/cmake/setup.h.in

@@ -222,9 +222,6 @@
 
 #define wxUSE_STD_STRING_CONV_IN_WXSTRING wxUSE_STL
 
-#cmakedefine01 wxUSE_IOSTREAMH
-
-
 
 #cmakedefine01 wxUSE_LONGLONG
 

configure

@@ -20210,44 +20210,6 @@ $as_echo "#define HAVE_TYPE_TRAITS 1" >>confdefs.h
 
 
 else
-
-
-    ac_ext=cpp
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-
-    for ac_header in iostream
-do :
-  ac_fn_cxx_check_header_compile "$LINENO" "iostream" "ac_cv_header_iostream" "
-"
-if test "x$ac_cv_header_iostream" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_IOSTREAM 1
-_ACEOF
-
-fi
-
-done
-
-
-    if test "$ac_cv_header_iostream" = "yes" ; then
-      :
-    else
-      $as_echo "#define wxUSE_IOSTREAMH 1" >>confdefs.h
-
-    fi
-
-    ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-
 ac_ext=cpp
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'

configure.in

@@ -1848,9 +1848,6 @@ AC_DEFINE(HAVE_TYPE_TRAITS)
 
 else dnl Not using C++11, so we do need to run the checks.
 
-dnl check for iostream (as opposed to iostream.h) standard header
-WX_CPP_NEW_HEADERS(, AC_DEFINE(wxUSE_IOSTREAMH))
-
 dnl the next few tests are all for C++ features and so need to be done using
 dnl C++ compiler
 AC_LANG_PUSH(C++)

docs/doxygen/mainpages/const_wxusedef.h

@@ -146,7 +146,6 @@ This table summarizes some of the global build features affecting the entire
 @itemdef{wxUSE_IMAGE, Use wxImage and related classes.}
 @itemdef{wxUSE_IMAGLIST, Use wxImageList class.}
 @itemdef{wxUSE_INTL, Use wxLocale and related classes.}
-@itemdef{wxUSE_IOSTREAMH, Use header "iostream.h" instead of "iostream".}
 @itemdef{wxUSE_IPC, Use interprocess communication classes.}
 @itemdef{wxUSE_IPV6, Use experimental wxIPV6address and related classes.}
 @itemdef{wxUSE_JOYSTICK, Use wxJoystick class.}

include/wx/android/setup.h

@@ -391,18 +391,6 @@
 // wxWidgets.
 #define wxUSE_STD_STRING_CONV_IN_WXSTRING wxUSE_STL
 
-// VC++ 4.2 and above allows <iostream> and <iostream.h> but you can't mix
-// them. Set this option to 1 to use <iostream.h>, 0 to use <iostream>.
-//
-// Note that newer compilers (including VC++ 7.1 and later) don't support
-// wxUSE_IOSTREAMH == 1 and so <iostream> will be used anyhow.
-//
-// Default is 0.
-//
-// Recommended setting: 0, only set to 1 if you use a really old compiler
-#define wxUSE_IOSTREAMH     0
-
-
 // ----------------------------------------------------------------------------
 // non GUI features selection
 // ----------------------------------------------------------------------------

include/wx/defs.h

@@ -460,21 +460,10 @@ typedef short int WXTYPE;
     /*
         Mingw <= 3.4 and all versions of Cygwin don't have std::wostream
      */
-    #if (defined(__MINGW32__) && !wxCHECK_GCC_VERSION(4, 0)) || \
-        defined(__CYGWIN__)
-        #define wxNO_WOSTREAM
-    #endif
-
-    /* VC++ doesn't have it in the old iostream library */
-    #if defined(__VISUALC__) && wxUSE_IOSTREAMH
-        #define wxNO_WOSTREAM
-    #endif
-
-    #ifndef wxNO_WOSTREAM
+    #if (!defined(__MINGW32__) || wxCHECK_GCC_VERSION(4, 0)) && \
+        !defined(__CYGWIN__)
         #define HAVE_WOSTREAM
     #endif
-
-    #undef wxNO_WOSTREAM
 #endif /* HAVE_WOSTREAM */
 
 /*  ---------------------------------------------------------------------------- */
@@ -849,7 +838,7 @@ typedef short int WXTYPE;
 
 /*  where should i put this? we need to make sure of this as it breaks */
 /*  the <iostream> code. */
-#if !wxUSE_IOSTREAMH && defined(__WXDEBUG__)
+#if defined(__WXDEBUG__)
 #    undef wxUSE_DEBUG_NEW_ALWAYS
 #    define wxUSE_DEBUG_NEW_ALWAYS 0
 #endif

include/wx/gtk/setup0.h

@@ -392,18 +392,6 @@
 // wxWidgets.
 #define wxUSE_STD_STRING_CONV_IN_WXSTRING wxUSE_STL
 
-// VC++ 4.2 and above allows <iostream> and <iostream.h> but you can't mix
-// them. Set this option to 1 to use <iostream.h>, 0 to use <iostream>.
-//
-// Note that newer compilers (including VC++ 7.1 and later) don't support
-// wxUSE_IOSTREAMH == 1 and so <iostream> will be used anyhow.
-//
-// Default is 0.
-//
-// Recommended setting: 0, only set to 1 if you use a really old compiler
-#define wxUSE_IOSTREAMH     0
-
-
 // ----------------------------------------------------------------------------
 // non GUI features selection
 // ----------------------------------------------------------------------------

include/wx/iosfwrap.h

@@ -1,6 +1,6 @@
 ///////////////////////////////////////////////////////////////////////////////
 // Name:        wx/iosfwrap.h
-// Purpose:     includes the correct stream-related forward declarations
+// Purpose:     This file is obsolete, include <iosfwd> directly instead
 // Author:      Jan van Dijk <[email protected]>
 // Modified by:
 // Created:     18.12.2002
@@ -10,12 +10,7 @@
 
 #if wxUSE_STD_IOSTREAM
 
-#if wxUSE_IOSTREAMH
-    // There is no pre-ANSI iosfwd header so we include the full declarations.
-#   include <iostream.h>
-#else
-#   include <iosfwd>
-#endif
+#include <iosfwd>
 
 #ifdef __WINDOWS__
 #   include "wx/msw/winundef.h"

include/wx/ioswrap.h

@@ -1,6 +1,6 @@
 ///////////////////////////////////////////////////////////////////////////////
 // Name:        wx/ioswrap.h
-// Purpose:     includes the correct iostream headers for current compiler
+// Purpose:     This file is obsolete, include <iostream> directly instead.
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     03.02.99
@@ -12,11 +12,7 @@
 
 #include "wx/beforestd.h"
 
-#if wxUSE_IOSTREAMH
-#   include <iostream.h>
-#else
-#   include <iostream>
-#endif
+#include <iostream>
 
 #include "wx/afterstd.h"
 

include/wx/motif/setup0.h

@@ -392,18 +392,6 @@
 // wxWidgets.
 #define wxUSE_STD_STRING_CONV_IN_WXSTRING wxUSE_STL
 
-// VC++ 4.2 and above allows <iostream> and <iostream.h> but you can't mix
-// them. Set this option to 1 to use <iostream.h>, 0 to use <iostream>.
-//
-// Note that newer compilers (including VC++ 7.1 and later) don't support
-// wxUSE_IOSTREAMH == 1 and so <iostream> will be used anyhow.
-//
-// Default is 0.
-//
-// Recommended setting: 0, only set to 1 if you use a really old compiler
-#define wxUSE_IOSTREAMH     0
-
-
 // ----------------------------------------------------------------------------
 // non GUI features selection
 // ----------------------------------------------------------------------------

include/wx/msw/setup0.h

@@ -392,18 +392,6 @@
 // wxWidgets.
 #define wxUSE_STD_STRING_CONV_IN_WXSTRING wxUSE_STL
 
-// VC++ 4.2 and above allows <iostream> and <iostream.h> but you can't mix
-// them. Set this option to 1 to use <iostream.h>, 0 to use <iostream>.
-//
-// Note that newer compilers (including VC++ 7.1 and later) don't support
-// wxUSE_IOSTREAMH == 1 and so <iostream> will be used anyhow.
-//
-// Default is 0.
-//
-// Recommended setting: 0, only set to 1 if you use a really old compiler
-#define wxUSE_IOSTREAMH     0
-
-
 // ----------------------------------------------------------------------------
 // non GUI features selection
 // ----------------------------------------------------------------------------

include/wx/osx/setup0.h

@@ -398,18 +398,6 @@
 // wxWidgets.
 #define wxUSE_STD_STRING_CONV_IN_WXSTRING wxUSE_STL
 
-// VC++ 4.2 and above allows <iostream> and <iostream.h> but you can't mix
-// them. Set this option to 1 to use <iostream.h>, 0 to use <iostream>.
-//
-// Note that newer compilers (including VC++ 7.1 and later) don't support
-// wxUSE_IOSTREAMH == 1 and so <iostream> will be used anyhow.
-//
-// Default is 0.
-//
-// Recommended setting: 0, only set to 1 if you use a really old compiler
-#define wxUSE_IOSTREAMH     0
-
-
 // ----------------------------------------------------------------------------
 // non GUI features selection
 // ----------------------------------------------------------------------------

include/wx/platform.h

@@ -529,32 +529,9 @@
 #include "wx/chkconf.h"
 
 
-/*
-   some compilers don't support iostream.h any longer, while some of theme
-   are not updated with <iostream> yet, so override the users setting here
-   in such case.
- */
-#if defined(_MSC_VER) && (_MSC_VER >= 1310)
-#    undef wxUSE_IOSTREAMH
-#    define wxUSE_IOSTREAMH 0
-#elif defined(__MINGW32__)
-#    undef wxUSE_IOSTREAMH
-#    define wxUSE_IOSTREAMH 0
-#endif /* compilers with/without iostream.h */
-
-/*
-   old C++ headers (like <iostream.h>) declare classes in the global namespace
-   while the new, standard ones (like <iostream>) do it in std:: namespace,
-   unless it's an old gcc version.
-
-   using this macro allows constuctions like "wxSTD iostream" to work in
-   either case
- */
-#if !wxUSE_IOSTREAMH && (!defined(__GNUC__) || ( __GNUC__ > 2 ) || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95))
-#    define wxSTD std::
-#else
-#    define wxSTD
-#endif
+/* These macros exist only for compatibility, don't use them in the new code */
+#define wxUSE_IOSTREAMH 0
+#define wxSTD std::
 
 /* On OpenVMS with the most recent HP C++ compiler some function (i.e. wscanf)
  * are only available in the std-namespace. (BUG???)

include/wx/setup_inc.h

@@ -388,18 +388,6 @@
 // wxWidgets.
 #define wxUSE_STD_STRING_CONV_IN_WXSTRING wxUSE_STL
 
-// VC++ 4.2 and above allows <iostream> and <iostream.h> but you can't mix
-// them. Set this option to 1 to use <iostream.h>, 0 to use <iostream>.
-//
-// Note that newer compilers (including VC++ 7.1 and later) don't support
-// wxUSE_IOSTREAMH == 1 and so <iostream> will be used anyhow.
-//
-// Default is 0.
-//
-// Recommended setting: 0, only set to 1 if you use a really old compiler
-#define wxUSE_IOSTREAMH     0
-
-
 // ----------------------------------------------------------------------------
 // non GUI features selection
 // ----------------------------------------------------------------------------

include/wx/univ/setup0.h

@@ -391,18 +391,6 @@
 // wxWidgets.
 #define wxUSE_STD_STRING_CONV_IN_WXSTRING wxUSE_STL
 
-// VC++ 4.2 and above allows <iostream> and <iostream.h> but you can't mix
-// them. Set this option to 1 to use <iostream.h>, 0 to use <iostream>.
-//
-// Note that newer compilers (including VC++ 7.1 and later) don't support
-// wxUSE_IOSTREAMH == 1 and so <iostream> will be used anyhow.
-//
-// Default is 0.
-//
-// Recommended setting: 0, only set to 1 if you use a really old compiler
-#define wxUSE_IOSTREAMH     0
-
-
 // ----------------------------------------------------------------------------
 // non GUI features selection
 // ----------------------------------------------------------------------------

samples/typetest/typetest.cpp

@@ -34,11 +34,7 @@
 
 #include "wx/ioswrap.h"
 
-#if wxUSE_IOSTREAMH
-    #include <fstream.h>
-#else
-    #include <fstream>
-#endif
+#include <fstream>
 
 #include "wx/wfstream.h"
 #include "wx/datstrm.h"

setup.h.in

@@ -222,9 +222,6 @@
 
 #define wxUSE_STD_STRING_CONV_IN_WXSTRING wxUSE_STL
 
-#define wxUSE_IOSTREAMH     0
-
-
 
 #define wxUSE_LONGLONG      0
 

src/common/docview.cpp

@@ -63,13 +63,9 @@
 #include "wx/except.h"
 
 #if wxUSE_STD_IOSTREAM
-    #include "wx/ioswrap.h"
     #include "wx/beforestd.h"
-    #if wxUSE_IOSTREAMH
-        #include <fstream.h>
-    #else
-        #include <fstream>
-    #endif
+    #include <fstream>
+    #include <iostream>
     #include "wx/afterstd.h"
 #else
     #include "wx/wfstream.h"