(Rudimentary) C++11 support is a hard requirement now

Change-Id: I43ed776d52336b822aa6152f0f2a29e39303bb75

11 files changed, 92 insertions, 151 deletions

diff --git a/config_host.mk.in b/config_host.mk.in
index c3aa2e4d7eea..40865e78e23d 100644
--- a/config_host.mk.in
+++ b/config_host.mk.in
@@ -241,7 +241,6 @@ export GTK_PRINT_CFLAGS=$(gb_SPACE)@GTK_PRINT_CFLAGS@
 export GTK_PRINT_LIBS=$(gb_SPACE)@GTK_PRINT_LIBS@
 export GUIBASE=@GUIBASE@
 export HARDLINKDELIVER=@HARDLINKDELIVER@
-export HAVE_CXX11=@HAVE_CXX11@
 export HAVE_GCC_AVX=@HAVE_GCC_AVX@
 export HAVE_GCC_BUILTIN_ATOMIC=@HAVE_GCC_BUILTIN_ATOMIC@
 export HAVE_GCC_FINLINE_LIMIT=@HAVE_GCC_FINLINE_LIMIT@
diff --git a/config_host/config_global.h.in b/config_host/config_global.h.in
index 88b7a1f7a4ff..929e5a0b5b8c 100644
--- a/config_host/config_global.h.in
+++ b/config_host/config_global.h.in
@@ -12,8 +12,6 @@ Any change in this header will cause a rebuild of almost everything.
 #ifndef CONFIG_GLOBAL_H
 #define CONFIG_GLOBAL_H
 
-/* Prefer using a feature-specific check such as HAVE_CXX11_DELETE to the generic HAVE_CXX11. */
-#define HAVE_CXX11 0
 #define HAVE_CXX11_DELETE 0
 #define HAVE_CXX11_OVERRIDE 0
 #define HAVE_CXX11_FINAL 0
diff --git a/configure.ac b/configure.ac
index 48e24908a22a..84d697b422ed 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6109,14 +6109,13 @@ dnl C++11
 dnl ===================================================================
 
 CXXFLAGS_CXX11=
-HAVE_CXX11=
 if test "$COM" = MSC; then
     AC_MSG_CHECKING([whether $CXX supports C++11])
     AC_MSG_RESULT(yes)
     # MSVC supports (a subset of) CXX11 without any switch
-    HAVE_CXX11=TRUE
     CXXFLAGS_CXX11=
 elif test "$GCC" = "yes"; then
+    HAVE_CXX11=
     CXXFLAGS_CXX11=
     AC_MSG_CHECKING([whether $CXX supports C++11])
     for flag in -std=gnu++11 -std=gnu++0x -std=c++11 -std=c++0x ; do
@@ -6134,7 +6133,7 @@ elif test "$GCC" = "yes"; then
     if test "$HAVE_CXX11" = TRUE; then
         AC_MSG_RESULT([yes ($CXXFLAGS_CXX11)])
     else
-        AC_MSG_RESULT(no)
+        AC_MSG_ERROR(no)
     fi
 fi
 
@@ -6143,7 +6142,7 @@ dnl <https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=179528> introduced
 dnl an additional member _M_size into C++11 std::list towards 4.7.0 and
 dnl <https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=189186> removed it
 dnl again towards 4.7.2:
-if test $CPP_LIBRARY = GLIBCXX -a "$HAVE_CXX11" = TRUE; then
+if test $CPP_LIBRARY = GLIBCXX; then
     AC_MSG_CHECKING([whether using C++11 causes libstdc++ 4.7.0/4.7.1 ABI breakage])
     AC_LANG_PUSH([C++])
     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
@@ -6159,18 +6158,16 @@ if test $CPP_LIBRARY = GLIBCXX -a "$HAVE_CXX11" = TRUE; then
 abi broken
 #endif
         ]])], [AC_MSG_RESULT(no, ok)],
-        [AC_MSG_RESULT(yes, disabling C++11)
-         HAVE_CXX11=])
+        [AC_MSG_ERROR(yes)])
     AC_LANG_POP([C++])
 fi
 
-if test "$HAVE_CXX11" = TRUE; then
-    AC_MSG_CHECKING([whether $CXX supports C++11 without Language Defect 757])
-    save_CXXFLAGS=$CXXFLAGS
-    CXXFLAGS="$CXXFLAGS $CXXFLAGS_CXX11"
-    AC_LANG_PUSH([C++])
+AC_MSG_CHECKING([whether $CXX supports C++11 without Language Defect 757])
+save_CXXFLAGS=$CXXFLAGS
+CXXFLAGS="$CXXFLAGS $CXXFLAGS_CXX11"
+AC_LANG_PUSH([C++])
 
-    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 #include <stddef.h>
 
 template <typename T, size_t S> char (&sal_n_array_size( T(&)[S] ))[S];
@@ -6195,21 +6192,17 @@ size_t i = sizeof(sal_n_array_size(thinga));
 size_t j = sizeof(sal_n_array_size(thingb));
 return !(i != 0 && j != 0);
 ]])
-        ], [ AC_MSG_RESULT(yes) ],
-        [ AC_MSG_RESULT(no)
-          HAVE_CXX11=
-        ])
-    AC_LANG_POP([C++])
-    CXXFLAGS=$save_CXXFLAGS
-fi
+    ], [ AC_MSG_RESULT(yes) ],
+    [ AC_MSG_ERROR(no)])
+AC_LANG_POP([C++])
+CXXFLAGS=$save_CXXFLAGS
 
-if test "$HAVE_CXX11" = TRUE; then
-    AC_MSG_CHECKING([whether $CXX supports C++11 without __float128 compile error])
-    save_CXXFLAGS=$CXXFLAGS
-    CXXFLAGS="$CXXFLAGS $CXXFLAGS_CXX11"
-    AC_LANG_PUSH([C++])
+AC_MSG_CHECKING([whether $CXX supports C++11 without __float128 compile error])
+save_CXXFLAGS=$CXXFLAGS
+CXXFLAGS="$CXXFLAGS $CXXFLAGS_CXX11"
+AC_LANG_PUSH([C++])
 
-    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 #include <vector>
     // some Clang fail when compiling against libstdc++ headers with -std=gnu++0x
     // (__float128)
@@ -6231,35 +6224,23 @@ if test "$HAVE_CXX11" = TRUE; then
     // some Clang fail when compiling against libstdc++ headers with -std=gnu++0x
     // (__float128)
 ]])
-        ],
-        [
-         AC_MSG_RESULT(yes)
-         CXXFLAGS_CXX11="$CXXFLAGS_CXX11 -D__float128=void"
-        ],
-        [
-         AC_MSG_RESULT(no)
-         HAVE_CXX11=
-        ])
+    ],
+    [
+     AC_MSG_RESULT(yes)
+     CXXFLAGS_CXX11="$CXXFLAGS_CXX11 -D__float128=void"
+    ],
+    [
+     AC_MSG_ERROR(no)
     ])
+])
 
-    AC_LANG_POP([C++])
-    CXXFLAGS=$save_CXXFLAGS
-fi
-
-if test "$HAVE_CXX11" = "TRUE"; then
-    AC_DEFINE(HAVE_CXX11)
-elif test -n "$CXXFLAGS_CXX11"; then
-    AC_MSG_NOTICE([Disabling C++11 support])
-    CXXFLAGS_CXX11=
-elif test "$CPP_LIBRARY" = LIBCPP -a $_os = Darwin; then
-    AC_MSG_ERROR([Selected libc++ but C++11 support broken])
-fi
+AC_LANG_POP([C++])
+CXXFLAGS=$save_CXXFLAGS
 
 AC_SUBST(CXXFLAGS_CXX11)
-AC_SUBST(HAVE_CXX11)
 
 AC_MSG_CHECKING([for std::shared_ptr])
-if test "$HAVE_CXX11" = "TRUE" -a "$GCC" = "yes"; then
+if test "$GCC" = "yes"; then
     save_CXXFLAGS=$CXXFLAGS
     CXXFLAGS="$CXXFLAGS $CXXFLAGS_CXX11"
     AC_LANG_PUSH([C++])
@@ -6283,38 +6264,35 @@ dnl ==================================
 dnl Check for C++11 "= delete" support
 dnl ==================================
 
-if test "$HAVE_CXX11" = "TRUE"; then
-    AC_MSG_CHECKING([whether $CXX supports C++11 = delete syntax])
-    save_CXXFLAGS=$CXXFLAGS
-    CXXFLAGS="$CXXFLAGS $CXXFLAGS_CXX11"
-    AC_LANG_PUSH([C++])
-    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+AC_MSG_CHECKING([whether $CXX supports C++11 = delete syntax])
+save_CXXFLAGS=$CXXFLAGS
+CXXFLAGS="$CXXFLAGS $CXXFLAGS_CXX11"
+AC_LANG_PUSH([C++])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 struct A
     {
     void test() = delete;
     };
 ]])],[HAVE_CXX11_DELETE=TRUE],[])
 
-    AC_LANG_POP([C++])
-    CXXFLAGS=$save_CXXFLAGS
-    if test "$HAVE_CXX11_DELETE" = "TRUE"; then
-        AC_MSG_RESULT([yes])
-        AC_DEFINE([HAVE_CXX11_DELETE])
-    else
-        AC_MSG_RESULT([no])
-    fi
+AC_LANG_POP([C++])
+CXXFLAGS=$save_CXXFLAGS
+if test "$HAVE_CXX11_DELETE" = "TRUE"; then
+    AC_MSG_RESULT([yes])
+    AC_DEFINE([HAVE_CXX11_DELETE])
+else
+    AC_MSG_RESULT([no])
 fi
 
 dnl ==================================
 dnl Check for C++11 "override" support
 dnl ==================================
 
-if test "$HAVE_CXX11" = "TRUE"; then
-    AC_MSG_CHECKING([whether $CXX supports C++11 "override" syntax])
-    save_CXXFLAGS=$CXXFLAGS
-    CXXFLAGS="$CXXFLAGS $CXXFLAGS_CXX11"
-    AC_LANG_PUSH([C++])
-    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+AC_MSG_CHECKING([whether $CXX supports C++11 "override" syntax])
+save_CXXFLAGS=$CXXFLAGS
+CXXFLAGS="$CXXFLAGS $CXXFLAGS_CXX11"
+AC_LANG_PUSH([C++])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 struct A
 {
         virtual void test();
@@ -6326,26 +6304,24 @@ struct B : A
 };
 ]])],[HAVE_CXX11_OVERRIDE=TRUE],[])
 
-    AC_LANG_POP([C++])
-    CXXFLAGS=$save_CXXFLAGS
-    if test "$HAVE_CXX11_OVERRIDE" = "TRUE"; then
-        AC_MSG_RESULT([yes])
-        AC_DEFINE([HAVE_CXX11_OVERRIDE])
-    else
-        AC_MSG_RESULT([no])
-    fi
+AC_LANG_POP([C++])
+CXXFLAGS=$save_CXXFLAGS
+if test "$HAVE_CXX11_OVERRIDE" = "TRUE"; then
+    AC_MSG_RESULT([yes])
+    AC_DEFINE([HAVE_CXX11_OVERRIDE])
+else
+    AC_MSG_RESULT([no])
 fi
 
 dnl ==================================
 dnl Check for C++11 "final" support
 dnl ==================================
 
-if test "$HAVE_CXX11" = "TRUE"; then
-    AC_MSG_CHECKING([whether $CXX supports C++11 "final" syntax])
-    save_CXXFLAGS=$CXXFLAGS
-    CXXFLAGS="$CXXFLAGS $CXXFLAGS_CXX11"
-    AC_LANG_PUSH([C++])
-    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+AC_MSG_CHECKING([whether $CXX supports C++11 "final" syntax])
+save_CXXFLAGS=$CXXFLAGS
+CXXFLAGS="$CXXFLAGS $CXXFLAGS_CXX11"
+AC_LANG_PUSH([C++])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 // First check that this correct program that uses "final" compiles
 struct A final
 {
@@ -6362,7 +6338,7 @@ struct C : B
 };
 ]])],[have_final=yes],[])
 
-    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 // Then check that the "final" works as expected,
 // that this program fails to compile
 struct A final
@@ -6374,7 +6350,7 @@ struct B : A
 };
 ]])],[],[final_class_works=yes])
 
-    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 // Also this should fail to compile
 struct B
 {
@@ -6391,40 +6367,37 @@ struct D : C
         void test();
 };
 ]])],[],[final_method_works=yes])
-    AC_LANG_POP([C++])
+AC_LANG_POP([C++])
 
-    CXXFLAGS=$save_CXXFLAGS
+CXXFLAGS=$save_CXXFLAGS
 
-    if test "$have_final" = yes -a "$final_class_works" = yes -a "$final_method_works" = yes; then
-        AC_MSG_RESULT([yes])
-        AC_DEFINE([HAVE_CXX11_FINAL])
-    else
-        AC_MSG_RESULT([no])
-    fi
+if test "$have_final" = yes -a "$final_class_works" = yes -a "$final_method_works" = yes; then
+    AC_MSG_RESULT([yes])
+    AC_DEFINE([HAVE_CXX11_FINAL])
+else
+    AC_MSG_RESULT([no])
 fi
 
 dnl ===================================================================
 dnl Check for C++11 perfect forwarding support
 dnl ===================================================================
-if test "$HAVE_CXX11" = "TRUE"; then
-    AC_MSG_CHECKING([whether $CXX supports C++11 perfect forwarding])
-    save_CXXFLAGS=$CXXFLAGS
-    CXXFLAGS="$CXXFLAGS $CXXFLAGS_CXX11"
-    AC_LANG_PUSH([C++])
-    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-        #include <utility>
-        template<typename T, typename... Args> T * f(Args &&... v) {
-            return new T(std::forward<Args>(v)...);
-        }
-        ]], [[
-        f<int>(0);
-        ]])], [perfect_forwarding=yes], [perfect_forwarding=no])
-    AC_LANG_POP([C++])
-    CXXFLAGS=$save_CXXFLAGS
-    AC_MSG_RESULT([$perfect_forwarding])
-    if test "$perfect_forwarding" = yes; then
-        AC_DEFINE([HAVE_CXX11_PERFECT_FORWARDING])
-    fi
+AC_MSG_CHECKING([whether $CXX supports C++11 perfect forwarding])
+save_CXXFLAGS=$CXXFLAGS
+CXXFLAGS="$CXXFLAGS $CXXFLAGS_CXX11"
+AC_LANG_PUSH([C++])
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+    #include <utility>
+    template<typename T, typename... Args> T * f(Args &&... v) {
+        return new T(std::forward<Args>(v)...);
+    }
+    ]], [[
+    f<int>(0);
+    ]])], [perfect_forwarding=yes], [perfect_forwarding=no])
+AC_LANG_POP([C++])
+CXXFLAGS=$save_CXXFLAGS
+AC_MSG_RESULT([$perfect_forwarding])
+if test "$perfect_forwarding" = yes; then
+    AC_DEFINE([HAVE_CXX11_PERFECT_FORWARDING])
 fi
 
 HAVE_GCC_PRAGMA_OPERATOR=
diff --git a/helpcompiler/inc/HelpCompiler.hxx b/helpcompiler/inc/HelpCompiler.hxx
index 206130ed6081..b66248e99ce4 100644
--- a/helpcompiler/inc/HelpCompiler.hxx
+++ b/helpcompiler/inc/HelpCompiler.hxx
@@ -20,12 +20,9 @@
 #ifndef INCLUDED_HELPCOMPILER_INC_HELPCOMPILER_HXX
 #define INCLUDED_HELPCOMPILER_INC_HELPCOMPILER_HXX
 
-#include <config_global.h>
+#include <sal/config.h>
 
 #include <string>
-#if !HAVE_CXX11
-#define BOOST_NO_0X_HDR_TYPEINDEX
-#endif
 #include <boost/unordered_map.hpp>
 #include <vector>
 #include <list>
diff --git a/include/osl/diagnose.hxx b/include/osl/diagnose.hxx
index 04eb986282a7..e93573a49425 100644
--- a/include/osl/diagnose.hxx
+++ b/include/osl/diagnose.hxx
@@ -26,11 +26,6 @@
 #include <functional>
 #include <typeinfo>
 
-#include <config_global.h>
-
-#if !HAVE_CXX11
-#define BOOST_NO_0X_HDR_TYPEINDEX
-#endif
 #include <boost/unordered_set.hpp>
 #include <osl/diagnose.h>
 #include <osl/interlck.h>
diff --git a/solenv/gbuild/platform/macosx.mk b/solenv/gbuild/platform/macosx.mk
index fa7be036280f..3d407300cc60 100644
--- a/solenv/gbuild/platform/macosx.mk
+++ b/solenv/gbuild/platform/macosx.mk
@@ -56,7 +56,7 @@ gb_CXXFLAGS := \
 	-Wno-non-virtual-dtor \
 	-fno-strict-aliasing \
 	-fsigned-char \
-	$(if $(filter TRUE,$(HAVE_CXX11)),$(CXXFLAGS_CXX11))
+	$(CXXFLAGS_CXX11)
 
 	#-Wshadow \ break in compiler headers already
 	#-fsigned-char \ might be removed?
diff --git a/solenv/gbuild/platform/mingw.mk b/solenv/gbuild/platform/mingw.mk
index edfdee58b7e7..97196162c29c 100644
--- a/solenv/gbuild/platform/mingw.mk
+++ b/solenv/gbuild/platform/mingw.mk
@@ -47,17 +47,13 @@ gb_CXXFLAGS := \
 	-Wshadow \
 	-Wuninitialized \
 	-fno-strict-aliasing \
-
+	-std=gnu++0x \
 
 ifneq ($(SYSBASE),)
 gb_CXXFLAGS += --sysroot=$(SYSBASE)
 gb_CFLAGS += --sysroot=$(SYSBASE)
 endif
 
-ifeq ($(HAVE_CXX11),TRUE)
-gb_CXXFLAGS += -std=gnu++0x
-endif
-
 # At least sal defines its own __main, which would cause DLLs linking against
 # sal to pick up sal's __main instead of the one from MinGW's dllcrt2.o:
 gb_LinkTarget_LDFLAGS := \
diff --git a/solenv/gbuild/platform/solaris.mk b/solenv/gbuild/platform/solaris.mk
index a781a6c88a48..94deeef76f41 100644
--- a/solenv/gbuild/platform/solaris.mk
+++ b/solenv/gbuild/platform/solaris.mk
@@ -62,6 +62,7 @@ gb_CXXFLAGS := \
 	-Wshadow \
 	-Woverloaded-virtual \
 	-Wno-non-virtual-dtor \
+	-std=c++0x \
 
 # enable debug STL
 ifeq ($(gb_ENABLE_DBGUTIL),$(true))
@@ -83,22 +84,16 @@ gb_CXXFLAGS += -fno-strict-aliasing
 endif
 endif
 
-ifeq ($(HAVE_CXX11),TRUE)
-#Currently, as well as for its own merits, c++11/c++0x mode allows use to use
-#a template for SAL_N_ELEMENTS to detect at compiler time its misuse
-gb_CXXFLAGS += -std=c++0x
-
 #We have so many std::auto_ptr uses that we need to be able to disable
 #warnings for those so that -Werror continues to be useful, seeing as moving
 #to unique_ptr isn't an option when we must support different compilers
-
+#
 #When we are using 4.6.0 we can use gcc pragmas to selectively silence auto_ptr
 #warnings in isolation, but for <= 4.5.X we need to globally disable
 #deprecation
 ifeq ($(HAVE_GCC_PRAGMA_OPERATOR),)
 gb_CXXFLAGS += -Wno-deprecated-declarations
 endif
-endif
 
 ifneq ($(strip $(SYSBASE)),)
 gb_CXXFLAGS += --sysroot=$(SYSBASE)
diff --git a/solenv/gbuild/platform/unxgcc.mk b/solenv/gbuild/platform/unxgcc.mk
index 94526abcdeb4..df68e948891b 100644
--- a/solenv/gbuild/platform/unxgcc.mk
+++ b/solenv/gbuild/platform/unxgcc.mk
@@ -43,6 +43,7 @@ gb_CXXFLAGS := \
 	-fPIC \
 	-Wshadow \
 	-Woverloaded-virtual \
+	$(CXXFLAGS_CXX11) \
 
 ifeq ($(COM_GCC_IS_CLANG),)
 gb_GccLess460 := $(shell expr $(GCC_VERSION) \< 406)
@@ -79,22 +80,16 @@ gb_COMPILERDEFS += \
 
 endif
 
-ifeq ($(HAVE_CXX11),TRUE)
-#Currently, as well as for its own merits, c++11/c++0x mode allows use to use
-#a template for SAL_N_ELEMENTS to detect at compiler time its misuse
-gb_CXXFLAGS += $(CXXFLAGS_CXX11)
-
 #We have so many std::auto_ptr uses that we need to be able to disable
 #warnings for those so that -Werror continues to be useful, seeing as moving
 #to unique_ptr isn't an option when we must support different compilers
-
+#
 #When we are using 4.6.0 we can use gcc pragmas to selectively silence auto_ptr
 #warnings in isolation, but for <= 4.5.X we need to globally disable
 #deprecation
 ifeq ($(HAVE_GCC_PRAGMA_OPERATOR),)
 gb_CXXFLAGS += -Wno-deprecated-declarations
 endif
-endif
 
 ifneq ($(strip $(SYSBASE)),)
 gb_CXXFLAGS += --sysroot=$(SYSBASE)
diff --git a/xmlhelp/source/cxxhelp/provider/databases.hxx b/xmlhelp/source/cxxhelp/provider/databases.hxx
index d161c60262df..366a914cbc6d 100644
--- a/xmlhelp/source/cxxhelp/provider/databases.hxx
+++ b/xmlhelp/source/cxxhelp/provider/databases.hxx
@@ -20,13 +20,10 @@
 #ifndef INCLUDED_XMLHELP_SOURCE_CXXHELP_PROVIDER_DATABASES_HXX
 #define INCLUDED_XMLHELP_SOURCE_CXXHELP_PROVIDER_DATABASES_HXX
 
-#include <config_global.h>
+#include <sal/config.h>
 
 #include <set>
 #include <vector>
-#if !HAVE_CXX11
-#define BOOST_NO_0X_HDR_TYPEINDEX
-#endif
 #include <boost/unordered_map.hpp>
 #include <boost/unordered_set.hpp>
 #include <osl/mutex.hxx>
diff --git a/xmlhelp/source/cxxhelp/provider/db.hxx b/xmlhelp/source/cxxhelp/provider/db.hxx
index 6abcdcdcd939..5d5823c00dea 100644
--- a/xmlhelp/source/cxxhelp/provider/db.hxx
+++ b/xmlhelp/source/cxxhelp/provider/db.hxx
@@ -21,10 +21,6 @@
 
 #include <com/sun/star/ucb/XSimpleFileAccess3.hpp>
 
-#include <config_global.h>
-#if !HAVE_CXX11
-#define BOOST_NO_0X_HDR_TYPEINDEX
-#endif
 #include <boost/unordered_map.hpp>
 #include <rtl/string.hxx>