Add wxUSE_COMPILER_TLS to allow disabling compiler TLS support.

Compiler TLS support is broken under Win32/MSVC when used for a code which is
part of a dynamically loaded DLL, so allow disabling it.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@71792 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

configure

@@ -32030,7 +32030,7 @@ EOF
   $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
   test $ac_status = 0; }; } ; then :
 
-	        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+   	        { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
 $as_echo "yes" >&6; }
 
     ax_gcc_version_option=yes
@@ -32038,7 +32038,7 @@ $as_echo "yes" >&6; }
 
 else
 
-		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+   		{ $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
 $as_echo "no" >&6; }
 
     ax_gcc_version_option=no
@@ -32509,6 +32509,9 @@ done
 
       fi
 
+$as_echo "#define wxUSE_COMPILER_TLS 1" >>confdefs.h
+
+
 if test "$wxUSE_THREADS" = "yes"; then
   $as_echo "#define wxUSE_THREADS 1" >>confdefs.h
 

configure.in

@@ -5226,6 +5226,10 @@ dnl AC_CHECK_FUNC(getaddrinfo, AC_DEFINE(HAVE_GETADDRINFO), [
 dnl    ]
 dnl )
 
+dnl This is currently always defined under Unix, there is no reason to ever
+dnl disable compiler TLS support there.
+AC_DEFINE(wxUSE_COMPILER_TLS)
+
 if test "$wxUSE_THREADS" = "yes"; then
   AC_DEFINE(wxUSE_THREADS)
 

docs/doxygen/mainpages/const_wxusedef.h

@@ -92,6 +92,7 @@ library:
 @itemdef{wxUSE_COLOURPICKERCTRL, Use wxColourPickerCtrl class.}
 @itemdef{wxUSE_COMBOBOX, Use wxComboBox class.}
 @itemdef{wxUSE_COMBOCTRL, Use wxComboCtrl class.}
+@itemdef{wxUSE_COMPILER_TLS, Can be set to 0 to prevent using compile thread-specific variables support.}
 @itemdef{wxUSE_CONFIG, Use wxConfig and related classes.}
 @itemdef{wxUSE_CONFIG_NATIVE, When enabled use native OS configuration instead of the wxFileConfig class.}
 @itemdef{wxUSE_CONSOLE_EVENTLOOP, Enable event loop in console programs.}

include/wx/chkconf.h

@@ -92,6 +92,14 @@
 #   endif
 #endif /* wxUSE_ANY */
 
+#ifndef wxUSE_COMPILER_TLS
+#   ifdef wxABORT_ON_CONFIG_ERROR
+#       error "wxUSE_COMPILER_TLS must be defined, please read comment near the top of this file."
+#   else
+#       define wxUSE_COMPILER_TLS 0
+#   endif
+#endif /* !defined(wxUSE_COMPILER_TLS) */
+
 #ifndef wxUSE_CONSOLE_EVENTLOOP
 #   ifdef wxABORT_ON_CONFIG_ERROR
 #       error "wxUSE_CONSOLE_EVENTLOOP must be defined, please read comment near the top of this file."

include/wx/gtk/setup0.h

@@ -267,6 +267,17 @@
 // Recommended setting: 1 if you want to support multiple languages
 #define wxUSE_PRINTF_POS_PARAMS      1
 
+// Enable the use of compiler-specific thread local storage keyword, if any.
+// This is used for wxTLS_XXX() macros implementation and normally should use
+// the compiler-provided support as it's simpler and more efficient, but must
+// not use it if wxWidgets is used in a dynamically loaded Win32 (i.e. using
+// LoadLibrary()/GetProcAddress()) as this triggers a bug in compiler TLS
+// support that results in crashes when any TLS variables are used. So if you
+// are building a Win32 DLL using wxWidgets that can be loaded dynamically, set
+// this to 0.
+//
+// Default is 1, but set to 0 if the scenario above is applicable.
+#define wxUSE_COMPILER_TLS 1
 
 // ----------------------------------------------------------------------------
 // Interoperability with the standard library.

include/wx/motif/setup0.h

@@ -267,6 +267,17 @@
 // Recommended setting: 1 if you want to support multiple languages
 #define wxUSE_PRINTF_POS_PARAMS      1
 
+// Enable the use of compiler-specific thread local storage keyword, if any.
+// This is used for wxTLS_XXX() macros implementation and normally should use
+// the compiler-provided support as it's simpler and more efficient, but must
+// not use it if wxWidgets is used in a dynamically loaded Win32 (i.e. using
+// LoadLibrary()/GetProcAddress()) as this triggers a bug in compiler TLS
+// support that results in crashes when any TLS variables are used. So if you
+// are building a Win32 DLL using wxWidgets that can be loaded dynamically, set
+// this to 0.
+//
+// Default is 1, but set to 0 if the scenario above is applicable.
+#define wxUSE_COMPILER_TLS 1
 
 // ----------------------------------------------------------------------------
 // Interoperability with the standard library.

include/wx/msw/setup0.h

@@ -267,6 +267,17 @@
 // Recommended setting: 1 if you want to support multiple languages
 #define wxUSE_PRINTF_POS_PARAMS      1
 
+// Enable the use of compiler-specific thread local storage keyword, if any.
+// This is used for wxTLS_XXX() macros implementation and normally should use
+// the compiler-provided support as it's simpler and more efficient, but must
+// not use it if wxWidgets is used in a dynamically loaded Win32 (i.e. using
+// LoadLibrary()/GetProcAddress()) as this triggers a bug in compiler TLS
+// support that results in crashes when any TLS variables are used. So if you
+// are building a Win32 DLL using wxWidgets that can be loaded dynamically, set
+// this to 0.
+//
+// Default is 1, but set to 0 if the scenario above is applicable.
+#define wxUSE_COMPILER_TLS 1
 
 // ----------------------------------------------------------------------------
 // Interoperability with the standard library.

include/wx/msw/wince/setup.h

@@ -267,6 +267,17 @@
 // Recommended setting: 1 if you want to support multiple languages
 #define wxUSE_PRINTF_POS_PARAMS      1
 
+// Enable the use of compiler-specific thread local storage keyword, if any.
+// This is used for wxTLS_XXX() macros implementation and normally should use
+// the compiler-provided support as it's simpler and more efficient, but must
+// not use it if wxWidgets is used in a dynamically loaded Win32 (i.e. using
+// LoadLibrary()/GetProcAddress()) as this triggers a bug in compiler TLS
+// support that results in crashes when any TLS variables are used. So if you
+// are building a Win32 DLL using wxWidgets that can be loaded dynamically, set
+// this to 0.
+//
+// Default is 1, but set to 0 if the scenario above is applicable.
+#define wxUSE_COMPILER_TLS 1
 
 // ----------------------------------------------------------------------------
 // Interoperability with the standard library.

include/wx/os2/setup0.h

@@ -267,6 +267,17 @@
 // Recommended setting: 1 if you want to support multiple languages
 #define wxUSE_PRINTF_POS_PARAMS      1
 
+// Enable the use of compiler-specific thread local storage keyword, if any.
+// This is used for wxTLS_XXX() macros implementation and normally should use
+// the compiler-provided support as it's simpler and more efficient, but must
+// not use it if wxWidgets is used in a dynamically loaded Win32 (i.e. using
+// LoadLibrary()/GetProcAddress()) as this triggers a bug in compiler TLS
+// support that results in crashes when any TLS variables are used. So if you
+// are building a Win32 DLL using wxWidgets that can be loaded dynamically, set
+// this to 0.
+//
+// Default is 1, but set to 0 if the scenario above is applicable.
+#define wxUSE_COMPILER_TLS 1
 
 // ----------------------------------------------------------------------------
 // Interoperability with the standard library.

include/wx/osx/setup0.h

@@ -268,6 +268,17 @@
 // Recommended setting: 1 if you want to support multiple languages
 #define wxUSE_PRINTF_POS_PARAMS      1
 
+// Enable the use of compiler-specific thread local storage keyword, if any.
+// This is used for wxTLS_XXX() macros implementation and normally should use
+// the compiler-provided support as it's simpler and more efficient, but must
+// not use it if wxWidgets is used in a dynamically loaded Win32 (i.e. using
+// LoadLibrary()/GetProcAddress()) as this triggers a bug in compiler TLS
+// support that results in crashes when any TLS variables are used. So if you
+// are building a Win32 DLL using wxWidgets that can be loaded dynamically, set
+// this to 0.
+//
+// Default is 1, but set to 0 if the scenario above is applicable.
+#define wxUSE_COMPILER_TLS 1
 
 // ----------------------------------------------------------------------------
 // Interoperability with the standard library.

include/wx/setup_inc.h

@@ -263,6 +263,17 @@
 // Recommended setting: 1 if you want to support multiple languages
 #define wxUSE_PRINTF_POS_PARAMS      1
 
+// Enable the use of compiler-specific thread local storage keyword, if any.
+// This is used for wxTLS_XXX() macros implementation and normally should use
+// the compiler-provided support as it's simpler and more efficient, but must
+// not use it if wxWidgets is used in a dynamically loaded Win32 (i.e. using
+// LoadLibrary()/GetProcAddress()) as this triggers a bug in compiler TLS
+// support that results in crashes when any TLS variables are used. So if you
+// are building a Win32 DLL using wxWidgets that can be loaded dynamically, set
+// this to 0.
+//
+// Default is 1, but set to 0 if the scenario above is applicable.
+#define wxUSE_COMPILER_TLS 1
 
 // ----------------------------------------------------------------------------
 // Interoperability with the standard library.

include/wx/tls.h

@@ -22,10 +22,13 @@
 #if !wxUSE_THREADS
     #define wxHAS_COMPILER_TLS
     #define wxTHREAD_SPECIFIC_DECL
+// otherwise try to find the compiler-specific way to handle TLS unless
+// explicitly disabled by setting wxUSE_COMPILER_TLS to 0 (it is 1 by default).
+#elif wxUSE_COMPILER_TLS
 // __thread keyword is not supported correctly by MinGW, at least in some
 // configurations, see http://sourceforge.net/support/tracker.php?aid=2837047
 // and when in doubt we prefer to not use it at all.
-#elif defined(HAVE___THREAD_KEYWORD) && !defined(__MINGW32__)
+#if defined(HAVE___THREAD_KEYWORD) && !defined(__MINGW32__)
     #define wxHAS_COMPILER_TLS
     #define wxTHREAD_SPECIFIC_DECL __thread
 // MSVC has its own version which might be supported by some other Windows
@@ -33,7 +36,8 @@
 #elif wxCHECK_VISUALC_VERSION(7)
     #define wxHAS_COMPILER_TLS
     #define wxTHREAD_SPECIFIC_DECL __declspec(thread)
-#endif
+#endif // compilers
+#endif // wxUSE_COMPILER_TLS
 
 // ----------------------------------------------------------------------------
 // define wxTLS_TYPE()

include/wx/univ/setup0.h

@@ -266,6 +266,17 @@
 // Recommended setting: 1 if you want to support multiple languages
 #define wxUSE_PRINTF_POS_PARAMS      1
 
+// Enable the use of compiler-specific thread local storage keyword, if any.
+// This is used for wxTLS_XXX() macros implementation and normally should use
+// the compiler-provided support as it's simpler and more efficient, but must
+// not use it if wxWidgets is used in a dynamically loaded Win32 (i.e. using
+// LoadLibrary()/GetProcAddress()) as this triggers a bug in compiler TLS
+// support that results in crashes when any TLS variables are used. So if you
+// are building a Win32 DLL using wxWidgets that can be loaded dynamically, set
+// this to 0.
+//
+// Default is 1, but set to 0 if the scenario above is applicable.
+#define wxUSE_COMPILER_TLS 1
 
 // ----------------------------------------------------------------------------
 // Interoperability with the standard library.

setup.h.in

@@ -202,6 +202,7 @@
 
 #define wxUSE_PRINTF_POS_PARAMS      0
 
+#define wxUSE_COMPILER_TLS 0
 
 
 #define wxUSE_STL 0