compile

d:\lib\qt5\ext>cl /LD /W0 /I d:\gc-7.6.0\include /I C:\Qt\Qt5.9.2\5.9.2\msvc2015_64\include qt_binding.cpp /link d:\gc.lib /LIBPATH:c:\Qt\Qt5.9.2\5.9.2\msvc2015_64\lib Qt5Core.lib Qt5Gui.lib Qt5Widgets.lib
Microsoft (R) C/C++ Optimizing Compiler Version 19.00.24210 for x64
Copyright (C) Microsoft Corporation.  All rights reserved.

qt_binding.cpp
C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\INCLUDE\iosfwd(343): warning C4577: 'noexcept' used with no exception handling mode specified; termination on exception is not guaranteed. Specify /EHsc
Microsoft (R) Incremental Linker Version 14.00.24210.0
Copyright (C) Microsoft Corporation.  All rights reserved.

/out:qt_binding.dll
/dll
/implib:qt_binding.lib
d:\gc.lib
/LIBPATH:c:\Qt\Qt5.9.2\5.9.2\msvc2015_64\lib
Qt5Core.lib
Qt5Gui.lib
Qt5Widgets.lib
qt_binding.obj
qt_binding.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: class QObject * __cdecl QObject::sender(void)const " (__imp_?sender@QObject@@QEBAPEAV1@XZ) referenced in function bg_QObject_sender_
qt_binding.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: int __cdecl QObject::senderSignalIndex(void)const " (__imp_?senderSignalIndex@QObject@@QEBAHXZ) referenced in function bg_QObject_senderSignalIndex_
qt_binding.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: int __cdecl QObject::receivers(char const *)const " (__imp_?receivers@QObject@@QEBAHPEBD@Z) referenced in function bg_QObject_receivers_const_char_X
qt_binding.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: bool __cdecl QObject::isSignalConnected(class QMetaMethod const &)const " (__imp_?isSignalConnected@QObject@@QEBA_NAEBVQMetaMethod@@@Z) referenced in function bg_QObject_isSignalConnected_const_QMetaMethod_R
qt_binding.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: virtual void __cdecl QObject::timerEvent(class QTimerEvent *)" (__imp_?timerEvent@QObject@@UEAAXPEAVQTimerEvent@@@Z) referenced in function "public: virtual void __cdecl BgInherit_Action::timerEvent(class QTimerEvent *)" (?timerEvent@BgInherit_Action@@UEAAXPEAVQTimerEvent@@@Z)
qt_binding.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: virtual void __cdecl QObject::childEvent(class QChildEvent *)" (__imp_?childEvent@QObject@@UEAAXPEAVQChildEvent@@@Z) referenced in function "public: virtual void __cdecl BgInherit_Action::childEvent(class QChildEvent *)" (?childEvent@BgInherit_Action@@UEAAXPEAVQChildEvent@@@Z)
qt_binding.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: virtual void __cdecl QObject::customEvent(class QEvent *)" (__imp_?customEvent@QObject@@UEAAXPEAVQEvent@@@Z) referenced in function "public: virtual void __cdecl BgInherit_Action::customEvent(class QEvent *)" (?customEvent@BgInherit_Action@@UEAAXPEAVQEvent@@@Z)
...





cl -c -Zc:wchar_t -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -O2 -EHsc -W0 -DUNICODE -D_UNICODE -DWIN32 -DWIN64 -DQT_NO_DEBUG -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DNDEBUG -Id:\gc-7.6.0\include -IC:\Qt\Qt5.9.2\5.9.2\msvc2015_64\include qt_binding.cpp

lib qt_binding.obj d:\gc.lib /LIBPATH:c:\Qt\Qt5.9.2\5.9.2\msvc2015_64\lib Qt5Widgets.lib Qt5Gui.lib Qt5Core.lib


$ crystal/bin/crystal build app.cr --cross-compile --target x86_64-pc-windows-msvc --no-debug


link app.o libevent.lib gc.lib pcre.lib kernel32.lib ws2_32.lib user32.lib /LIBPATH:c:\Qt\Qt5.9.2\5.9.2\msvc2015_64\lib Qt5Widgets.lib Qt5Gui.lib  Qt5Core.lib lib\qt5\ext\qt_binding.lib /NODEFAULTLIB:msvcrt

link /DYNAMICBASE /NXCOMPAT /INCREMENTAL:NO /SUBSYSTEM:WINDOWS /NODEFAULTLIB:msvcrt /OUT:app.exe app.o libevent.lib gc.lib pcre.lib kernel32.lib ws2_32.lib user32.lib /LIBPATH:c:\Qt\Qt5.9.2\5.9.2\msvc2015_64\lib Qt5Core.lib Qt5Gui.lib Qt5Widgets.lib lib\qt5\ext\qt_binding.lib

diff-bindgen.diff

diff --git a/assets/bindgen_helper.hpp b/assets/bindgen_helper.hpp
index 22ee985..4fc72c1 100644
--- a/assets/bindgen_helper.hpp
+++ b/assets/bindgen_helper.hpp
@@ -40,7 +40,7 @@
 #ifndef BINDGEN_HELPER_HPP
 #define BINDGEN_HELPER_HPP
 
-#include <gc/gc.h> // Boehm GC
+#include <gc.h> // Boehm GC
 #include <string.h>
 #include <stdlib.h> // abort()
 #include <stdio.h> // fprintf()
@@ -52,15 +52,19 @@ typedef struct CrystalString { // C compatibility
 } CrystalString;
 
 // Compiler branching hint
+#ifdef __GNUC__
 #define bindgen_likely(x) __builtin_expect(!!(x), 1)
+#else
+#define bindgen_likely(x) (x)
+#endif // __GNUC__
 
-static __attribute__((noreturn)) void bindgen_fatal_panic(const char *message) {
+[[noreturn]] static void bindgen_fatal_panic(const char *message) {
   fprintf(stderr, "Fatal error in bindings: %s\n", message);
   abort();
 }
 
 #ifdef __cplusplus
-#include <gc/gc_cpp.h>
+#include <gc_cpp.h>
 #include <string>
 
 // Break C++'s encapsulation to allow easy wrapping of protected methods.
diff --git a/spec/integration/basic.cpp b/spec/integration/basic.cpp
index 07ac1b5..9592fef 100644
--- a/spec/integration/basic.cpp
+++ b/spec/integration/basic.cpp
@@ -1,7 +1,7 @@
 #include <cstdio>
 #include <cstdlib>
 #include <cstring>
-#include <gc/gc.h>
+#include <gc.h>
 
 class IgnoreMe { };
 
diff --git a/spec/integration/spec_base.yml b/spec/integration/spec_base.yml
index a4ebdbf..b2d2052 100644
--- a/spec/integration/spec_base.yml
+++ b/spec/integration/spec_base.yml
@@ -9,7 +9,7 @@ generators:
     # Don't barf on unused functions.  Everything else: Error.
     build: "{CXX|c++} -c -o {SPEC_NAME}.o {SPEC_NAME}.cpp -I.. -Wall -Werror -Wno-unused-function"
     preamble: |-
-      #include <gc/gc_cpp.h>
+      #include <gc_cpp.h>
       #include "bindgen_helper.hpp"
   crystal:
     output: tmp/{SPEC_NAME}.cr
diff --git a/src/bindgen/call_builder/cpp_method.cr b/src/bindgen/call_builder/cpp_method.cr
index 8568840..df97384 100644
--- a/src/bindgen/call_builder/cpp_method.cr
+++ b/src/bindgen/call_builder/cpp_method.cr
@@ -66,11 +66,10 @@ module Bindgen
 
         def code_body(const, call, platform, prefix)
           %[  #{const}#{@class} *_self_ = this;\n] \
-          %[  if (bindgen_likely(#{@virtual_target.name}.isValid())) {\n] \
-          %[    #{prefix}#{@virtual_target.body.to_code(@virtual_target, platform)};\n] \
-          %[  } else {\n] \
+          %[  if (!bindgen_likely(#{@virtual_target.name}.isValid())) {\n] \
           %[    bindgen_fatal_panic("No implementation for pure method #{call.origin.class_name}::#{call.name}");\n] \
-          %[  }]
+          %[  }] \
+          %[  #{prefix}#{@virtual_target.body.to_code(@virtual_target, platform)};\n]
         end
       end
     end

diff-qt5.cr.diff

diff --git a/config/classes.yml b/config/classes.yml
index dc17675..8049839 100644
--- a/config/classes.yml
+++ b/config/classes.yml
@@ -2,8 +2,6 @@ classes:
   QObject: Object
   QTimer: Timer
   "QMetaObject::Connection": SignalConnection
-  QAbstractEventDispatcher: AbstractEventDispatcher
-  QAbstractEventDispatcher::TimerInfo: EventDispatcherTimerInfo
   QSocketNotifier: SocketNotifier
   QPaintDevice: PaintDevice
   QWidget: Widget
diff --git a/config/types.yml b/config/types.yml
index e22376f..5a93ff7 100644
--- a/config/types.yml
+++ b/config/types.yml
@@ -53,23 +53,9 @@ types: # Type rewrite rules
     # crystal_type: PainterPixmapFragment
     # pass_by: Pointer
   "QAbstractEventDispatcher::TimerInfo":
-    binding_type: EventDispatcherTimerInfo
-    generate_binding: false
-    generate_wrapper: false
-    copy_structure: true
-    pass_by: Value
-    kind: Struct
+    ignore: true
   "std::chrono::milliseconds":
-    cpp_type: int64_t
-    binding_type: Int64
-    crystal_type: Time::Span
-    generate_binding: false
-    generate_wrapper: false
-    pass_by: Value
-    builtin: true
-    to_cpp: "std::chrono::milliseconds(%)"
-    from_cpp: "(%.count())"
-    converter: Qt::Converter::TimeSpan
+    ignore: true
   "QUrl::FormattingOptions":
     crystal_type: Url::FormattingOptions
     binding_type: Url::FormattingOptions
diff --git a/ext/bindgen_helper.hpp b/ext/bindgen_helper.hpp
index 22ee985..4fc72c1 100644
--- a/ext/bindgen_helper.hpp
+++ b/ext/bindgen_helper.hpp
@@ -40,7 +40,7 @@
 #ifndef BINDGEN_HELPER_HPP
 #define BINDGEN_HELPER_HPP
 
-#include <gc/gc.h> // Boehm GC
+#include <gc.h> // Boehm GC
 #include <string.h>
 #include <stdlib.h> // abort()
 #include <stdio.h> // fprintf()
@@ -52,15 +52,19 @@ typedef struct CrystalString { // C compatibility
 } CrystalString;
 
 // Compiler branching hint
+#ifdef __GNUC__
 #define bindgen_likely(x) __builtin_expect(!!(x), 1)
+#else
+#define bindgen_likely(x) (x)
+#endif // __GNUC__
 
-static __attribute__((noreturn)) void bindgen_fatal_panic(const char *message) {
+[[noreturn]] static void bindgen_fatal_panic(const char *message) {
   fprintf(stderr, "Fatal error in bindings: %s\n", message);
   abort();
 }
 
 #ifdef __cplusplus
-#include <gc/gc_cpp.h>
+#include <gc_cpp.h>
 #include <string>
 
 // Break C++'s encapsulation to allow easy wrapping of protected methods.
diff --git a/ext/converters.hpp b/ext/converters.hpp
index 2be7682..e681805 100644
--- a/ext/converters.hpp
+++ b/ext/converters.hpp
@@ -1,4 +1,4 @@
-#include <gc/gc.h> // Boehm GC
+#include <gc.h> // Boehm GC
 #include <cstring>
 #include <QtCore/qbytearray.h>
 #include <QtCore/qstring.h>

errors

'int QObject::startTimer(int,Qt::TimerType)': cannot convert argument 1 from 'std::chrono::duration<__int64,std::milli>' to 'int'

warning C4190: 'bg_QGraphicsItem_mapToParent_qreal_qreal' has C-linkage specified, but returns UDT 'QPointF' which is incompatible with C



qt_binding.cpp(544): error C2039: 'intervalAsDuration': is not a member of 'QTimer'
c:\qt\qt5.9.2\5.9.2\msvc2015_64\include\qtwidgets\qprogressdialog.h(54): note: see declaration of 'QTimer'
qt_binding.cpp(544): error C2228: left of '.count' must have class/struct/union
qt_binding.cpp(548): error C2039: 'remainingTimeAsDuration': is not a member of 'QTimer'
c:\qt\qt5.9.2\5.9.2\msvc2015_64\include\qtwidgets\qprogressdialog.h(54): note: see declaration of 'QTimer'
qt_binding.cpp(548): error C2228: left of '.count' must have class/struct/union
qt_binding.cpp(846): error C2259: 'BgInherit_AbstractEventDispatcher': cannot instantiate abstract class
qt_binding.cpp(846): note: due to following members:
qt_binding.cpp(846): note: 'bool QAbstractEventDispatcher::registerEventNotifier(QWinEventNotifier *)': is abstract
c:\qt\qt5.9.2\5.9.2\msvc2015_64\include\qtcore\qabstracteventdispatcher.h(99): note: see declaration of 'QAbstractEventDispatcher::registerEventNotifier'
qt_binding.cpp(846): note: 'void QAbstractEventDispatcher::unregisterEventNotifier(QWinEventNotifier *)': is abstract
c:\qt\qt5.9.2\5.9.2\msvc2015_64\include\qtcore\qabstracteventdispatcher.h(100): note: see declaration of 'QAbstractEventDispatcher::unregisterEventNotifier'
qt_binding.cpp(934): error C2259: 'BgInherit_AbstractEventDispatcher': cannot instantiate abstract class
qt_binding.cpp(934): note: due to following members:
qt_binding.cpp(934): note: 'bool QAbstractEventDispatcher::registerEventNotifier(QWinEventNotifier *)': is abstract
c:\qt\qt5.9.2\5.9.2\msvc2015_64\include\qtcore\qabstracteventdispatcher.h(99): note: see declaration of 'QAbstractEventDispatcher::registerEventNotifier'
qt_binding.cpp(934): note: 'void QAbstractEventDispatcher::unregisterEventNotifier(QWinEventNotifier *)': is abstract
c:\qt\qt5.9.2\5.9.2\msvc2015_64\include\qtcore\qabstracteventdispatcher.h(100): note: see declaration of 'QAbstractEventDispatcher::unregisterEventNotifier'

https://doc.qt.io/qt-5/qabstracteventdispatcher.html#registerEventNotifier

libgc

download and unpack http://www.hboehm.info/gc/gc_source/gc-7.6.0.tar.gz

download https://github.com/ivmai/libatomic_ops/releases/download/v7.4.6/libatomic_ops-7.4.6.tar.gz

mv libatomic_ops-7.4.6 gc-7.6.0/libatomic_ops

cd gc-7.6.0

wget https://gist.githubusercontent.com/ynkdir/688e62f419e5374347bf/raw/d250598ddf5129addd212b8390279a01bca12706/win32.mak

echo "!include <Win32.Mak>" > ntwin32.mak


nmake /F NT_X64_STATIC_THREADS_MAKEFILE nodebug=1 all