Add support for building with mingw-w64 GCC. Fix warnings

CodeGenerator/CodeGenerator.pro

@@ -17,8 +17,6 @@
 
 QT       += core gui xml widgets
 
-CONFIG += c++11
-
 # The following define makes your compiler emit warnings if you use
 # any Qt feature that has been marked deprecated (the exact warnings
 # depend on your compiler). Please consult the documentation of the
@@ -30,7 +28,7 @@ DEFINES += QT_DEPRECATED_WARNINGS
 # You can also select to disable deprecated APIs only up to a certain version of Qt.
 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
 
-QMAKE_CXXFLAGS += /std:c++latest /utf-8
+include(../Pdf4Qt.pri)
 
 DESTDIR = $$OUT_PWD/..
 

JBIG2_Viewer/JBIG2_Viewer.pro

@@ -2,8 +2,6 @@ QT       += core gui
 
 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
 
-CONFIG += c++11
-
 # The following define makes your compiler emit warnings if you use
 # any Qt feature that has been marked deprecated (the exact warnings
 # depend on your compiler). Please consult the documentation of the
@@ -15,7 +13,7 @@ DEFINES += QT_DEPRECATED_WARNINGS
 # You can also select to disable deprecated APIs only up to a certain version of Qt.
 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
 
-QMAKE_CXXFLAGS += /std:c++latest /utf-8
+include(../Pdf4Qt.pri)
 
 INCLUDEPATH += $$PWD/../PDF4QtLib/Sources
 

Pdf4Qt.pri

@@ -0,0 +1,34 @@
+#    Copyright (C) 2018-2022 Jakub Melka
+#
+#    This file is part of PDF4QT.
+#
+#    PDF4QT is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU Lesser General Public License as published by
+#    the Free Software Foundation, either version 3 of the License, or
+#    with the written consent of the copyright owner, any later version.
+#
+#    PDF4QT is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU Lesser General Public License for more details.
+#
+#    You should have received a copy of the GNU Lesser General Public License
+#    along with PDF4QT.  If not, see <https://www.gnu.org/licenses/>.
+
+win32-msvc*: {
+    QMAKE_CXXFLAGS += /std:c++latest /utf-8 /bigobj
+}
+
+win32-*g++|unix: {
+    CONFIG += link_pkgconfig
+    QMAKE_CXXFLAGS += -std=c++20
+    win32: {
+        QMAKE_CXXFLAGS += -Wa,-mbig-obj
+    }
+}
+
+win32 {
+    CONFIG += skip_target_version_ext
+} else {
+    CONFIG += unversioned_libname
+}

Pdf4QtDocDiff/Pdf4QtDocDiff.pro

@@ -20,6 +20,8 @@ QT += core gui widgets winextras
 TARGET = Pdf4QtDocDiff
 TEMPLATE = app
 
+include(../Pdf4Qt.pri)
+
 VERSION = 1.1.0
 
 RC_ICONS = $$PWD/app-icon.ico
@@ -28,7 +30,6 @@ QMAKE_TARGET_DESCRIPTION = "PDF Document Diff"
 QMAKE_TARGET_COPYRIGHT = "(c) Jakub Melka 2018-2021"
 
 DEFINES += QT_DEPRECATED_WARNINGS
-QMAKE_CXXFLAGS += /std:c++latest /utf-8
 
 INCLUDEPATH += $$PWD/../PDF4QtLib/Sources
 DESTDIR = $$OUT_PWD/..

Pdf4QtDocPageOrganizer/Pdf4QtDocPageOrganizer.pro

@@ -20,6 +20,8 @@ QT += core gui widgets winextras
 TARGET = Pdf4QtDocPageOrganizer
 TEMPLATE = app
 
+include(../Pdf4Qt.pri)
+
 VERSION = 1.1.0
 
 RC_ICONS = $$PWD/app-icon.ico
@@ -28,7 +30,6 @@ QMAKE_TARGET_DESCRIPTION = "PDF Document Page Organizer"
 QMAKE_TARGET_COPYRIGHT = "(c) Jakub Melka 2018-2021"
 
 DEFINES += QT_DEPRECATED_WARNINGS
-QMAKE_CXXFLAGS += /std:c++latest /utf-8
 
 INCLUDEPATH += $$PWD/../PDF4QtLib/Sources
 DESTDIR = $$OUT_PWD/..

Pdf4QtDocPageOrganizer/pageitemmodel.cpp

@@ -1075,7 +1075,7 @@ bool PageItemModel::dropMimeData(const QMimeData* data, Qt::DropAction action, i
         rows.push_back(row);
     }
 
-    qSort(rows);
+    std::sort(rows.begin(), rows.end());
 
     // Sanity checks on rows
     if (rows.empty())

Pdf4QtLib/Pdf4QtLib.pro

@@ -20,7 +20,8 @@ QT       += gui widgets xml
 TARGET = Pdf4QtLib
 TEMPLATE = lib
 
-win32:TARGET_EXT = .dll
+include(../Pdf4Qt.pri)
+
 VERSION = 1.1.0
 
 QMAKE_TARGET_DESCRIPTION = "PDF rendering / editing library for Qt"
@@ -205,6 +206,7 @@ CONFIG(debug, debug|release) {
 SUFFIX = d
 }
 
+win32-msvc*: {
     # Link to freetype library
     LIBS += -L$$Pdf4Qt_DEPENDENCIES_PATH/FreeType/ -lfreetype$${SUFFIX}
     INCLUDEPATH += $$Pdf4Qt_DEPENDENCIES_PATH/FreeType/include
@@ -240,11 +242,20 @@ DEPENDPATH += $$Pdf4Qt_DEPENDENCIES_PATH/zlib/include
     LIBS += -L$$Pdf4Qt_DEPENDENCIES_PATH/lcms2/bin$${SUFFIX}/ -llcms2_static
     INCLUDEPATH += $$Pdf4Qt_DEPENDENCIES_PATH/lcms2/include
     DEPENDPATH += $$Pdf4Qt_DEPENDENCIES_PATH/lcms2/include
+}
+
+win32-*g++|unix: {
+    PKGCONFIG += freetype2 libopenjp2 libjpeg lcms2 libssl libcrypto zlib
+    LIBS += -ltbb
+    win32: {
+        LIBS += -lmscms -lcrypt32 -lsecur32
+    }
+}
 
 # ensure debug info even for RELEASE build
 CONFIG += force_debug_info
 
-QMAKE_CXXFLAGS += /std:c++latest /utf-8 /bigobj
+
 QMAKE_RESOURCE_FLAGS += -threshold 0 -compress 9
 
 PdfforQt_library.files = $$DESTDIR/Pdf4QtLib.dll

Pdf4QtLib/sources/pdfannotation.cpp

@@ -1415,7 +1415,7 @@ void PDFAnnotationManager::drawAnnotation(const PageAnnotation& annotation,
     {
         errors.push_back(PDFRenderError(RenderErrorType::Error, exception.getMessage()));
     }
-    catch (PDFRendererException exception)
+    catch (const PDFRendererException &exception)
     {
         errors.push_back(exception.getError());
     }

Pdf4QtLib/sources/pdfcolorspaces.cpp

@@ -293,7 +293,7 @@ QImage PDFAbstractColorSpace::getImage(const PDFImageData& imageData,
 
                         fillRGBBuffer(inputColors, outputLine, intent, cms, reporter);
                     }
-                    catch (PDFException lineException)
+                    catch (const PDFException &lineException)
                     {
                         QMutexLocker lock(&exceptionMutex);
                         if (!exception)
@@ -396,7 +396,7 @@ QImage PDFAbstractColorSpace::getImage(const PDFImageData& imageData,
                             *outputLine++ = *alphaLine++;
                         }
                     }
-                    catch (PDFException lineException)
+                    catch (const PDFException &lineException)
                     {
                         QMutexLocker lock(&exceptionMutex);
                         if (!exception)

Pdf4QtLib/sources/pdfdocumentreader.cpp

@@ -585,7 +585,7 @@ PDFDocument PDFDocumentReader::readFromBuffer(const QByteArray& buffer)
         PDFObjectStorage storage(std::move(objects), PDFObject(xrefTable.getTrailerDictionary()), qMove(m_securityHandler));
         return PDFDocument(std::move(storage), m_version);
     }
-    catch (PDFException parserException)
+    catch (const PDFException &parserException)
     {
         m_result = Result::Failed;
         m_errorMessage = parserException.getMessage();
@@ -770,7 +770,7 @@ PDFDocument PDFDocumentReader::readDamagedDocumentFromBuffer(const QByteArray& b
         PDFObjectStorage storage(std::move(objects), PDFObject(trailerDictionaryObject), qMove(m_securityHandler));
         return PDFDocument(std::move(storage), m_version);
     }
-    catch (PDFException parserException)
+    catch (const PDFException &parserException)
     {
         m_result = Result::Failed;
         m_warnings << parserException.getMessage();

Pdf4QtLib/sources/pdfdocumenttextflow.cpp

@@ -548,9 +548,9 @@ private:
 
 void PDFStructureTreeTextFlowCollector::visitStructureTree(const PDFStructureTree* structureTree)
 {
-    m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, QString(), PDFDocumentTextFlow::StructureItemStart});
+    m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, QString(), PDFDocumentTextFlow::StructureItemStart, {} });
     acceptChildren(structureTree);
-    m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, QString(), PDFDocumentTextFlow::StructureItemEnd});
+    m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, QString(), PDFDocumentTextFlow::StructureItemEnd, {} });
 }
 
 void PDFStructureTreeTextFlowCollector::markHasContent()
@@ -564,7 +564,7 @@ void PDFStructureTreeTextFlowCollector::markHasContent()
 void PDFStructureTreeTextFlowCollector::visitStructureElement(const PDFStructureElement* structureElement)
 {
     size_t index = m_items->size();
-    m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, QString(), PDFDocumentTextFlow::StructureItemStart});
+    m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, QString(), PDFDocumentTextFlow::StructureItemStart, {} });
 
     // Mark stack so we can delete unused items
     m_hasContentStack.push_back(false);
@@ -579,37 +579,37 @@ void PDFStructureTreeTextFlowCollector::visitStructureElement(const PDFStructure
     if (!title.isEmpty())
     {
         markHasContent();
-        m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, QString(), PDFDocumentTextFlow::StructureTitle});
+        m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, QString(), PDFDocumentTextFlow::StructureTitle, {} });
     }
 
     if (!language.isEmpty())
     {
         markHasContent();
-        m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, language, PDFDocumentTextFlow::StructureLanguage });
+        m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, language, PDFDocumentTextFlow::StructureLanguage, {} });
     }
 
     if (!alternativeDescription.isEmpty())
     {
         markHasContent();
-        m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, alternativeDescription, PDFDocumentTextFlow::StructureAlternativeDescription });
+        m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, alternativeDescription, PDFDocumentTextFlow::StructureAlternativeDescription, {} });
     }
 
     if (!expandedForm.isEmpty())
     {
         markHasContent();
-        m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, expandedForm, PDFDocumentTextFlow::StructureExpandedForm });
+        m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, expandedForm, PDFDocumentTextFlow::StructureExpandedForm, {} });
     }
 
     if (!actualText.isEmpty())
     {
         markHasContent();
-        m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, actualText, PDFDocumentTextFlow::StructureActualText });
+        m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, actualText, PDFDocumentTextFlow::StructureActualText, {} });
     }
 
     if (!phoneme.isEmpty())
     {
         markHasContent();
-        m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, phoneme, PDFDocumentTextFlow::StructurePhoneme });
+        m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, phoneme, PDFDocumentTextFlow::StructurePhoneme, {} });
     }
 
     for (const auto& textItem : m_extractor->getText(structureElement))
@@ -623,7 +623,7 @@ void PDFStructureTreeTextFlowCollector::visitStructureElement(const PDFStructure
     const bool hasContent = m_hasContentStack.back();
     m_hasContentStack.pop_back();
 
-    m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, QString(), PDFDocumentTextFlow::StructureItemEnd });
+    m_items->push_back(PDFDocumentTextFlow::Item{ QRectF(), -1, QString(), PDFDocumentTextFlow::StructureItemEnd, {} });
 
     if (!hasContent)
     {
@@ -702,12 +702,12 @@ PDFDocumentTextFlow PDFDocumentTextFlowFactory::create(const PDFDocument* docume
                 PDFTextFlows textFlows = PDFTextFlow::createTextFlows(textLayout, PDFTextFlow::FlowFlags(PDFTextFlow::SeparateBlocks) | PDFTextFlow::RemoveSoftHyphen, pageIndex);
 
                 PDFDocumentTextFlow::Items flowItems;
-                flowItems.emplace_back(PDFDocumentTextFlow::Item{ QRectF(), pageIndex, PDFTranslationContext::tr("Page %1").arg(pageIndex + 1), PDFDocumentTextFlow::PageStart });
+                flowItems.emplace_back(PDFDocumentTextFlow::Item{ QRectF(), pageIndex, PDFTranslationContext::tr("Page %1").arg(pageIndex + 1), PDFDocumentTextFlow::PageStart, {} });
                 for (const PDFTextFlow& textFlow : textFlows)
                 {
                     flowItems.emplace_back(PDFDocumentTextFlow::Item{ textFlow.getBoundingBox(), pageIndex, textFlow.getText(), PDFDocumentTextFlow::Text, textFlow.getBoundingBoxes() });
                 }
-                flowItems.emplace_back(PDFDocumentTextFlow::Item{ QRectF(), pageIndex, QString(), PDFDocumentTextFlow::PageEnd });
+                flowItems.emplace_back(PDFDocumentTextFlow::Item{ QRectF(), pageIndex, QString(), PDFDocumentTextFlow::PageEnd, {} });
 
                 QMutexLocker lock(&mutex);
                 items[pageIndex] = qMove(flowItems);
@@ -760,7 +760,7 @@ PDFDocumentTextFlow PDFDocumentTextFlowFactory::create(const PDFDocument* docume
             PDFDocumentTextFlow::Items flowItems;
             for (PDFInteger pageIndex : pageIndices)
             {
-                flowItems.emplace_back(PDFDocumentTextFlow::Item{ QRectF(), pageIndex, PDFTranslationContext::tr("Page %1").arg(pageIndex + 1), PDFDocumentTextFlow::PageStart });
+                flowItems.emplace_back(PDFDocumentTextFlow::Item{ QRectF(), pageIndex, PDFTranslationContext::tr("Page %1").arg(pageIndex + 1), PDFDocumentTextFlow::PageStart, {} });
                 for (const PDFStructureTreeTextItem& sequenceItem : extractor.getTextSequence(pageIndex))
                 {
                     if (sequenceItem.type == PDFStructureTreeTextItem::Type::Text)
@@ -768,7 +768,7 @@ PDFDocumentTextFlow PDFDocumentTextFlowFactory::create(const PDFDocument* docume
                         flowItems.emplace_back(PDFDocumentTextFlow::Item{ sequenceItem.boundingRect, pageIndex, sequenceItem.text, PDFDocumentTextFlow::Text, sequenceItem.characterBoundingRects });
                     }
                 }
-                flowItems.emplace_back(PDFDocumentTextFlow::Item{ QRectF(), pageIndex, QString(), PDFDocumentTextFlow::PageEnd });
+                flowItems.emplace_back(PDFDocumentTextFlow::Item{ QRectF(), pageIndex, QString(), PDFDocumentTextFlow::PageEnd, {} });
             }
 
             result = PDFDocumentTextFlow(qMove(flowItems));

Pdf4QtLib/sources/pdfpagecontentprocessor.cpp

@@ -707,7 +707,7 @@ void PDFPageContentProcessor::processContent(const QByteArray& content)
             m_operands.clear();
             m_errorList.append(PDFRenderError(RenderErrorType::Error, exception.getMessage()));
         }
-        catch (PDFRendererException exception)
+        catch (const PDFRendererException &exception)
         {
             m_operands.clear();
             m_errorList.append(exception.getError());
@@ -3401,7 +3401,7 @@ bool PDFPageContentProcessor::isContentSuppressedByOC(PDFObjectReference ocgOrOc
     {
         ocmd = PDFOptionalContentMembershipObject::create(m_document, PDFObject::createReference(ocgOrOcmd));
     }
-    catch (PDFException e)
+    catch (const PDFException &e)
     {
         m_errorList.push_back(PDFRenderError(RenderErrorType::Error, e.getMessage()));
     }

Pdf4QtLib/sources/pdfpagecontentprocessor.h

@@ -700,7 +700,7 @@ protected:
     /// Returns optional content activity
     const PDFOptionalContentActivity* getOptionalContentActivity() const { return m_optionalContentActivity; }
 
-    class PDFTransparencyGroupGuard
+    class PDF4QTLIBSHARED_EXPORT PDFTransparencyGroupGuard
     {
     public:
         explicit PDFTransparencyGroupGuard(PDFPageContentProcessor* processor, PDFTransparencyGroup&& group);

Pdf4QtLib/sources/pdfutils.cpp

@@ -246,7 +246,7 @@ std::vector<PDFDependentLibraryInfo> PDFDependentLibraryInfo::getLibraryInfo()
     libjpegInfo.library = tr("libjpeg");
     libjpegInfo.license = tr("permissive + ack.");
     libjpegInfo.url = tr("https://www.ijg.org/");
-#if defined(Q_OS_UNIX)
+#if defined(Q_OS_UNIX) || defined(__MINGW32__)
     libjpegInfo.version = tr("%1").arg(JPEG_LIB_VERSION);
 #else
     libjpegInfo.version = tr("%1.%2").arg(JPEG_LIB_VERSION_MAJOR).arg(JPEG_LIB_VERSION_MINOR);

Pdf4QtViewer/Pdf4QtViewer.pro

@@ -20,7 +20,8 @@ QT += core gui widgets winextras printsupport texttospeech network xml
 TARGET = Pdf4QtViewer
 TEMPLATE = lib
 
-win32:TARGET_EXT = .dll
+include(../Pdf4Qt.pri)
+
 VERSION = 1.1.0
 
 DEFINES += PDF4QTVIEWER_LIBRARY
@@ -30,7 +31,9 @@ QMAKE_TARGET_COPYRIGHT = "(c) Jakub Melka 2018-2021"
 
 DEFINES += QT_DEPRECATED_WARNINGS
 
-QMAKE_CXXFLAGS += /std:c++latest /utf-8
+win32-*g++|unix: {
+    LIBS += -ltbb
+}
 
 INCLUDEPATH += $$PWD/../PDF4QtLib/Sources
 DESTDIR = $$OUT_PWD/..

Pdf4QtViewer/pdfdocumentpropertiesdialog.cpp

@@ -361,7 +361,7 @@ void PDFDocumentPropertiesDialog::initializeFonts(const pdf::PDFDocument* docume
                                     }
                                 }
                             }
-                            catch (pdf::PDFException)
+                            catch (const pdf::PDFException &)
                             {
                                 // Do nothing, some error occured, continue with next font
                                 continue;
@@ -370,7 +370,7 @@ void PDFDocumentPropertiesDialog::initializeFonts(const pdf::PDFDocument* docume
                     }
                 }
             }
-            catch (pdf::PDFException)
+            catch (const pdf::PDFException &)
             {
                 // Do nothing, some error occured
             }

Pdf4QtViewer/pdfprogramcontroller.cpp

@@ -318,8 +318,8 @@ PDFProgramController::PDFProgramController(QObject* parent) :
     m_undoRedoManager(nullptr),
     m_recentFileManager(new PDFRecentFileManager(this)),
     m_optionalContentActivity(nullptr),
-    m_futureWatcher(nullptr),
     m_textToSpeech(nullptr),
+    m_futureWatcher(nullptr),
     m_CMSManager(new pdf::PDFCMSManager(this)),
     m_toolManager(nullptr),
     m_annotationManager(nullptr),

Pdf4QtViewer/pdfsidebarwidget.cpp

@@ -663,7 +663,7 @@ void PDFSidebarWidget::onAttachmentCustomContextMenuRequested(const QPoint& pos)
                             QMessageBox::critical(this, tr("Error"), tr("Failed to save attachment to file. %1").arg(file.errorString()));
                         }
                     }
-                    catch (pdf::PDFException e)
+                    catch (const pdf::PDFException &e)
                     {
                         QMessageBox::critical(this, tr("Error"), tr("Failed to save attachment to file. %1").arg(e.getMessage()));
                     }

Pdf4QtViewer/pdfviewersettings.cpp

@@ -263,11 +263,11 @@ PDFViewerSettings::Settings::Settings() :
     m_allowLaunchApplications(true),
     m_allowLaunchURI(true),
     m_allowDeveloperMode(false),
+    m_multithreadingStrategy(pdf::PDFExecutionPolicy::Strategy::AlwaysMultithreaded),
     m_compiledPageCacheLimit(128 * 1024),
     m_thumbnailsCacheLimit(PIXMAP_CACHE_LIMIT),
     m_fontCacheLimit(pdf::DEFAULT_FONT_CACHE_LIMIT),
     m_instancedFontCacheLimit(pdf::DEFAULT_REALIZED_FONT_CACHE_LIMIT),
-    m_multithreadingStrategy(pdf::PDFExecutionPolicy::Strategy::AlwaysMultithreaded),
     m_speechRate(0.0),
     m_speechPitch(0.0),
     m_speechVolume(1.0),

Pdf4QtViewer/pdfviewersettingsdialog.cpp

@@ -69,9 +69,9 @@ PDFViewerSettingsDialog::PDFViewerSettingsDialog(const PDFViewerSettings::Settin
     m_settings(settings),
     m_cmsSettings(cmsSettings),
     m_otherSettings(otherSettings),
-    m_certificateStore(certificateStore),
     m_actions(),
     m_isLoadingData(false),
+    m_certificateStore(certificateStore),
     m_enabledPlugins(enabledPlugins),
     m_plugins(plugins),
     m_networkAccessManager(nullptr),

Pdf4QtViewerLite/Pdf4QtViewerLite.pro

@@ -20,6 +20,8 @@ QT += core gui widgets winextras
 TARGET = Pdf4QtViewerLite
 TEMPLATE = app
 
+include(../Pdf4Qt.pri)
+
 VERSION = 1.1.0
 
 RC_ICONS = $$PWD/app-icon.ico
@@ -28,7 +30,10 @@ QMAKE_TARGET_DESCRIPTION = "PDF viewer for Qt, Lite version"
 QMAKE_TARGET_COPYRIGHT = "(c) Jakub Melka 2018-2021"
 
 DEFINES += QT_DEPRECATED_WARNINGS
-QMAKE_CXXFLAGS += /std:c++latest /utf-8
+
+win32-*g++|unix: {
+    LIBS += -ltbb
+}
 
 INCLUDEPATH += $$PWD/../PDF4QtLib/Sources $$PWD/../PDF4QtViewer
 DESTDIR = $$OUT_PWD/..

Pdf4QtViewerPlugins/AudioBookPlugin/AudioBookPlugin.pro

@@ -20,18 +20,20 @@ DEFINES += AUDIOBOOKPLUGIN_LIBRARY
 
 QT += gui widgets
 
+include(../../Pdf4Qt.pri)
+
 LIBS += -L$$OUT_PWD/../..
 
 LIBS += -lPdf4QtLib
 
-QMAKE_CXXFLAGS += /std:c++latest /utf-8
+win32-*g++: {
+    LIBS += -lole32 -lsapi
+}
 
 INCLUDEPATH += $$PWD/../../Pdf4QtLib/Sources
 
 DESTDIR = $$OUT_PWD/../../pdfplugins
 
-CONFIG += c++11
-
 SOURCES += \
     audiobookcreator.cpp \
     audiobookplugin.cpp \

Pdf4QtViewerPlugins/AudioBookPlugin/audiobookcreator.cpp

@@ -18,6 +18,7 @@
 #include "audiobookcreator.h"
 
 #ifdef Q_OS_WIN
+#include <windows.h>
 #include <sapi.h>
 #if defined(PDF4QT_USE_PRAGMA_LIB)
 #pragma comment(lib, "ole32")

Pdf4QtViewerPlugins/DimensionsPlugin/DimensionsPlugin.pro

@@ -20,18 +20,16 @@ DEFINES += DIMENSIONPLUGIN_LIBRARY
 
 QT += gui widgets
 
+include(../../Pdf4Qt.pri)
+
 LIBS += -L$$OUT_PWD/../..
 
 LIBS += -lPdf4QtLib
 
-QMAKE_CXXFLAGS += /std:c++latest /utf-8
-
 INCLUDEPATH += $$PWD/../../Pdf4QtLib/Sources
 
 DESTDIR = $$OUT_PWD/../../pdfplugins
 
-CONFIG += c++11
-
 SOURCES += \
     dimensionsplugin.cpp \
     dimensiontool.cpp \

Pdf4QtViewerPlugins/ObjectInspectorPlugin/ObjectInspectorPlugin.pro

@@ -20,18 +20,16 @@ DEFINES += OBJECTINSPECTORPLUGIN_LIBRARY
 
 QT += gui widgets
 
+include(../../Pdf4Qt.pri)
+
 LIBS += -L$$OUT_PWD/../..
 
 LIBS += -lPdf4QtLib
 
-QMAKE_CXXFLAGS += /std:c++latest /utf-8
-
 INCLUDEPATH += $$PWD/../../Pdf4QtLib/Sources
 
 DESTDIR = $$OUT_PWD/../../pdfplugins
 
-CONFIG += c++11
-
 SOURCES += \
     objectinspectordialog.cpp \
     objectinspectorplugin.cpp \
@@ -61,3 +59,7 @@ FORMS += \
     objectstatisticsdialog.ui \
     objectviewerwidget.ui \
     statisticsgraphwidget.ui
+
+win32-*g++|unix: {
+    LIBS += -ltbb
+}

Pdf4QtViewerPlugins/ObjectInspectorPlugin/objectviewerwidget.cpp

@@ -35,9 +35,9 @@ ObjectViewerWidget::ObjectViewerWidget(QWidget *parent) :
 ObjectViewerWidget::ObjectViewerWidget(bool isPinned, QWidget* parent) :
     QWidget(parent),
     ui(new Ui::ObjectViewerWidget),
-    m_isPinned(isPinned),
     m_cms(nullptr),
     m_document(nullptr),
+    m_isPinned(isPinned),
     m_isRootObject(false)
 {
     ui->setupUi(this);
@@ -252,7 +252,7 @@ void ObjectViewerWidget::updateUi()
                 ui->stackedWidget->setCurrentWidget(ui->contentTextBrowserPage);
             }
         }
-        catch (pdf::PDFException exception)
+        catch (const pdf::PDFException &exception)
         {
             ui->contentTextBrowser->setText(exception.getMessage());
             ui->stackedWidget->setCurrentWidget(ui->contentTextBrowserPage);

Pdf4QtViewerPlugins/OutputPreviewPlugin/OutputPreviewPlugin.pro

@@ -20,18 +20,16 @@ DEFINES += OUTPUTPREVIEWPLUGIN_LIBRARY
 
 QT += gui widgets
 
+include(../../Pdf4Qt.pri)
+
 LIBS += -L$$OUT_PWD/../..
 
 LIBS += -lPdf4QtLib
 
-QMAKE_CXXFLAGS += /std:c++latest /utf-8
-
 INCLUDEPATH += $$PWD/../../Pdf4QtLib/Sources
 
 DESTDIR = $$OUT_PWD/../../pdfplugins
 
-CONFIG += c++11
-
 SOURCES += \
     inkcoveragedialog.cpp \
     outputpreviewdialog.cpp \

Pdf4QtViewerPlugins/RedactPlugin/RedactPlugin.pro

@@ -20,18 +20,16 @@ DEFINES += REDACTPLUGIN_LIBRARY
 
 QT += gui widgets
 
+include(../../Pdf4Qt.pri)
+
 LIBS += -L$$OUT_PWD/../..
 
 LIBS += -lPdf4QtLib
 
-QMAKE_CXXFLAGS += /std:c++latest /utf-8
-
 INCLUDEPATH += $$PWD/../../Pdf4QtLib/Sources
 
 DESTDIR = $$OUT_PWD/../../pdfplugins
 
-CONFIG += c++11
-
 SOURCES += \
     createredacteddocumentdialog.cpp \
     redactplugin.cpp

Pdf4QtViewerPlugins/SoftProofingPlugin/SoftProofingPlugin.pro

@@ -20,18 +20,16 @@ DEFINES += SOFTPROOFINGPLUGIN_LIBRARY
 
 QT += gui widgets
 
+include(../../Pdf4Qt.pri)
+
 LIBS += -L$$OUT_PWD/../..
 
 LIBS += -lPdf4QtLib
 
-QMAKE_CXXFLAGS += /std:c++latest /utf-8
-
 INCLUDEPATH += $$PWD/../../Pdf4QtLib/Sources
 
 DESTDIR = $$OUT_PWD/../../pdfplugins
 
-CONFIG += c++11
-
 SOURCES += \
     softproofingplugin.cpp \
     settingsdialog.cpp

Pdf4QtViewerProfi/Pdf4QtViewerProfi.pro

@@ -20,6 +20,8 @@ QT += core gui widgets winextras
 TARGET = Pdf4QtViewerProfi
 TEMPLATE = app
 
+include(../Pdf4Qt.pri)
+
 VERSION = 1.1.0
 
 RC_ICONS = $$PWD/app-icon.ico
@@ -28,7 +30,10 @@ QMAKE_TARGET_DESCRIPTION = "PDF viewer for Qt, Profi version"
 QMAKE_TARGET_COPYRIGHT = "(c) Jakub Melka 2018-2021"
 
 DEFINES += QT_DEPRECATED_WARNINGS
-QMAKE_CXXFLAGS += /std:c++latest /utf-8
+
+win32-*g++|unix: {
+    LIBS += -ltbb
+}
 
 INCLUDEPATH += $$PWD/../PDF4QtLib/Sources $$PWD/../PDF4QtViewer
 DESTDIR = $$OUT_PWD/..

PdfExampleGenerator/PdfExampleGenerator.pro

@@ -17,7 +17,9 @@
 
 QT += gui widgets
 
-CONFIG += c++11 console
+include(../Pdf4Qt.pri)
+
+CONFIG += console
 CONFIG -= app_bundle
 
 # The following define makes your compiler emit warnings if you use
@@ -31,8 +33,6 @@ DEFINES += QT_DEPRECATED_WARNINGS
 # You can also select to disable deprecated APIs only up to a certain version of Qt.
 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
 
-QMAKE_CXXFLAGS += /std:c++latest /utf-8
-
 INCLUDEPATH += $$PWD/../PDF4QtLib/Sources
 
 DESTDIR = $$OUT_PWD/..

PdfTool/PdfTool.pro

@@ -15,9 +15,11 @@
 #    You should have received a copy of the GNU Lesser General Public License
 #    along with PDF4QT.  If not, see <https://www.gnu.org/licenses/>.
 
-CONFIG += c++11 console
+CONFIG += console
 CONFIG -= app_bundle
 
+include(../Pdf4Qt.pri)
+
 TARGET = PdfTool
 VERSION = 1.1.0
 
@@ -28,7 +30,12 @@ QMAKE_TARGET_COPYRIGHT = "(c) Jakub Melka 2018-2021"
 # In order to do so, uncomment the following line.
 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
 
-QMAKE_CXXFLAGS += /std:c++latest /utf-8
+win32-*g++|unix: {
+    LIBS += -ltbb
+    win32: {
+        LIBS += -lole32 -lsapi
+    }
+}
 
 INCLUDEPATH += $$PWD/../PDF4QtLib/Sources
 

PdfTool/pdftoolabstractapplication.cpp

@@ -95,7 +95,7 @@ int PDFToolHelpApplication::execute(const PDFToolOptions& options)
 
         infos.emplace_back(qMove(info));
     }
-    qSort(infos);
+    std::sort(infos.begin(), infos.end());
 
     for (const Info& info : infos)
     {

PdfTool/pdftoolattachments.cpp

@@ -189,7 +189,7 @@ int PDFToolAttachmentsApplication::execute(const PDFToolOptions& options)
                     return ErrorFailedWriteToFile;
                 }
             }
-            catch (pdf::PDFException e)
+            catch (const pdf::PDFException &e)
             {
                 PDFConsole::writeError(PDFToolTranslationContext::tr("Failed to save attachment to file. %1").arg(e.getMessage()), options.outputCodec);
                 return ErrorFailedWriteToFile;

PdfTool/pdftoolaudiobook.cpp

@@ -21,6 +21,7 @@
 
 #include <QFileInfo>
 
+#include <windows.h>
 #include <sapi.h>
 
 #if defined(PDF4QT_USE_PRAGMA_LIB)

PdfTool/pdftoolinfofonts.cpp

@@ -254,7 +254,7 @@ int PDFToolInfoFonts::execute(const PDFToolOptions& options)
                                 }
                             }
                         }
-                        catch (pdf::PDFException)
+                        catch (const pdf::PDFException &)
                         {
                             // Do nothing, some error occured, continue with next font
                             continue;
@@ -263,7 +263,7 @@ int PDFToolInfoFonts::execute(const PDFToolOptions& options)
                 }
             }
         }
-        catch (pdf::PDFException)
+        catch (const pdf::PDFException &)
         {
             // Do nothing, some error occured
         }

PdfTool/pdftoolinfometadata.cpp

@@ -61,7 +61,7 @@ int PDFToolInfoMetadataApplication::execute(const PDFToolOptions& options)
             QByteArray rawData = document.getDecodedStream(metadata.getStream());
             PDFConsole::writeData(rawData);
         }
-        catch (pdf::PDFException e)
+        catch (const pdf::PDFException &e)
         {
             PDFConsole::writeError(e.getMessage(), options.outputCodec);
         }

PdfTool/pdftoolseparate.cpp

@@ -122,7 +122,7 @@ int PDFToolSeparate::execute(const PDFToolOptions& options)
                 }
             }
         }
-        catch (pdf::PDFException exception)
+        catch (const pdf::PDFException &exception)
         {
             PDFConsole::writeError(exception.getMessage(), options.outputCodec);
         }

PdfTool/pdftoolunite.cpp

@@ -211,7 +211,7 @@ int PDFToolUnite::execute(const PDFToolOptions& options)
             return ErrorFailedWriteToFile;
         }
     }
-    catch (pdf::PDFException exception)
+    catch (const pdf::PDFException &exception)
     {
         PDFConsole::writeError(exception.getMessage(), options.outputCodec);
         return ErrorUnknown;

PdfTool/pdftoolxml.cpp

@@ -134,7 +134,7 @@ void PDFXmlExportVisitor::visitStream(const pdf::PDFStream* stream)
                 m_writer->writeTextElement("text", text);
             }
         }
-        catch (pdf::PDFException)
+        catch (const pdf::PDFException &)
         {
             // Do nothing
         }

UnitTests/UnitTests.pro

@@ -22,6 +22,8 @@ CONFIG -= app_bundle
 
 TEMPLATE = app
 
+include(../Pdf4Qt.pri)
+
 INCLUDEPATH += $$PWD/../Pdf4QtLib/Sources
 
 DESTDIR = $$OUT_PWD/..
@@ -30,8 +32,6 @@ LIBS += -L$$OUT_PWD/..
 
 LIBS += -lPdf4QtLib
 
-QMAKE_CXXFLAGS += /std:c++latest
-
 SOURCES += \ 
     tst_lexicalanalyzertest.cpp