Fix cxx detection, update flags, and fix warnings.

Author: wengxt

CMakeLists.txt

@@ -21,16 +21,25 @@ include(CMakePackageConfigHelpers)
 include(ECMSetupVersion)
 include(ECMGenerateHeaders)
 
-include(CheckCXXCompilerFlag)
-
-check_cxx_compiler_flag("-std=gnu++17" SUPPORT_CXX17)
-
-if(NOT SUPPORT_CXX11)
-    message(FATAL_ERROR "need c++ 17 compatible compiler to compile")
+set(CMAKE_CXX_EXTENSIONS OFF)
+set(CMAKE_CXX_STANDARD_REQUIRED TRUE)
+set(CMAKE_CXX_STANDARD 17)
+
+set(CMAKE_C_FLAGS "-Wall -Wextra ${CMAKE_C_FLAGS}")
+set(CMAKE_CXX_FLAGS "-Wall -Wextra ${CMAKE_CXX_FLAGS}")
+set(CMAKE_SHARED_LINKER_FLAGS "-Wl,--no-undefined -Wl,--as-needed ${CMAKE_SHARED_LINKER_FLAGS}")
+set(CMAKE_MODULE_LINKER_FLAGS "-Wl,--no-undefined -Wl,--as-needed ${CMAKE_MODULE_LINKER_FLAGS}")
+
+set(CMAKE_C_VISIBILITY_PRESET hidden)
+set(CMAKE_CXX_VISIBILITY_PRESET hidden)
+set(CMAKE_VISIBILITY_INLINES_HIDDEN On)
+
+if (POLICY CMP0063)
+    # No sane project should be affected by CMP0063, so suppress the warnings
+    # generated by the above visibility settings in CMake >= 3.3
+    cmake_policy(SET CMP0063 NEW)
 endif()
 
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++17 -Wall")
-
 find_package(XKBCommon 0.5.0 REQUIRED COMPONENTS XKBCommon)
 
 if (ENABLE_LIBRARY)

qt5/platforminputcontext/fcitxwatcher.cpp

@@ -265,7 +265,7 @@ void FcitxWatcher::unwatchSocketFile() {
     m_fsWatcher->disconnect(SIGNAL(directoryChanged(QString)));
 }
 
-void FcitxWatcher::imChanged(const QString &service, const QString &oldOwner,
+void FcitxWatcher::imChanged(const QString &service, const QString &,
                              const QString &newOwner) {
     if (service == m_serviceName) {
         if (!newOwner.isEmpty()) {

qt5/quickphrase-editor/editor.cpp

@@ -116,7 +116,7 @@ QString ListEditor::addon() { return "fcitx-quickphrase"; }
 
 bool ListEditor::asyncSave() { return true; }
 
-void ListEditor::changeFile(int newIndex) {
+void ListEditor::changeFile(int) {
     if (m_model->needSave()) {
         int ret = QMessageBox::question(
             this, _("Save Changes"),

qt5/quickphrase-editor/filelistmodel.cpp

@@ -28,7 +28,7 @@ fcitx::FileListModel::FileListModel(QObject *parent)
 
 fcitx::FileListModel::~FileListModel() {}
 
-int fcitx::FileListModel::rowCount(const QModelIndex &parent) const {
+int fcitx::FileListModel::rowCount(const QModelIndex &) const {
     return m_fileList.size();
 }
 

qt5/quickphrase-editor/model.cpp

@@ -103,7 +103,7 @@ void QuickPhraseModel::deleteAllItem() {
 
 Qt::ItemFlags QuickPhraseModel::flags(const QModelIndex &index) const {
     if (!index.isValid())
-        return 0;
+        return {};
 
     return Qt::ItemIsEditable | Qt::ItemIsEnabled | Qt::ItemIsSelectable;
 }

qt5/widgetsaddons/fcitxqtkeysequencewidget.cpp

@@ -88,7 +88,7 @@ class FcitxQtKeySequenceWidgetPrivate {
     }
 
     // private slot
-    void doneRecording(bool validate = true);
+    void doneRecording();
 
     // members
     FcitxQtKeySequenceWidget *const q;
@@ -198,6 +198,7 @@ QKeySequence FcitxQtKeySequenceWidget::keySequence() const {
 void FcitxQtKeySequenceWidget::setKeySequence(
     const QKeySequence &seq, FcitxQtModifierSide side,
     FcitxQtKeySequenceWidget::Validation validate) {
+    Q_UNUSED(validate);
     // oldKeySequence holds the key sequence before recording started, if
     // setKeySequence()
     // is called while not recording then set oldKeySequence to the existing
@@ -212,7 +213,7 @@ void FcitxQtKeySequenceWidget::setKeySequence(
 
     d->side = side;
     d->keySequence = seq;
-    d->doneRecording(validate == Validate);
+    d->doneRecording();
 }
 
 // slot
@@ -240,7 +241,7 @@ void FcitxQtKeySequenceWidgetPrivate::startRecording() {
     updateShortcutDisplay();
 }
 
-void FcitxQtKeySequenceWidgetPrivate::doneRecording(bool validate) {
+void FcitxQtKeySequenceWidgetPrivate::doneRecording() {
     modifierlessTimeout.stop();
     isRecording = false;
     keyButton->releaseKeyboard();

qt5/widgetsaddons/qtkeytrans.cpp

@@ -23,6 +23,7 @@
 #include <QTextCodec>
 #include <ctype.h>
 #include <fcitx-config/hotkey.h>
+#include <algorithm>
 
 #define _ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
 #define _ARRAY_END(a) (a + _ARRAY_SIZE(a))
@@ -36,14 +37,14 @@ void qEventToSym(int key, const QString &text, Qt::KeyboardModifiers mod,
             break;
         int uni = text[0].unicode();
         int *result =
-            qBinaryFind(unicodeHasKey, _ARRAY_END(unicodeHasKey), uni);
+            std::lower_bound(unicodeHasKey, _ARRAY_END(unicodeHasKey), uni);
         if (result != _ARRAY_END(unicodeHasKey)) {
             sym = *result + 0x1000000;
             break;
         }
 
         Unicode2Key *keyMap =
-            qBinaryFind(unicodeKeyMap, _ARRAY_END(unicodeKeyMap), uni);
+            std::lower_bound(unicodeKeyMap, _ARRAY_END(unicodeKeyMap), uni);
         if (keyMap != _ARRAY_END(unicodeKeyMap)) {
             sym = keyMap->key;
             break;
@@ -56,26 +57,26 @@ void qEventToSym(int key, const QString &text, Qt::KeyboardModifiers mod,
 
         QtCode2Key *result = nullptr;
         if (mod & Qt::KeypadModifier) {
-            result = qBinaryFind(keyPadQtCodeToKey,
+            result = std::lower_bound(keyPadQtCodeToKey,
                                  _ARRAY_END(keyPadQtCodeToKey), key);
             if (result == _ARRAY_END(keyPadQtCodeToKey))
                 result = nullptr;
         } else {
             if (text.isNull()) {
-                result = qBinaryFind(qtCodeToKeyBackup,
+                result = std::lower_bound(qtCodeToKeyBackup,
                                      _ARRAY_END(qtCodeToKeyBackup), key);
                 if (result == _ARRAY_END(qtCodeToKeyBackup))
                     result = nullptr;
             }
             if (!result) {
-                result = qBinaryFind(qtCodeToKey, _ARRAY_END(qtCodeToKey), key);
+                result = std::lower_bound(qtCodeToKey, _ARRAY_END(qtCodeToKey), key);
 
                 if (result == _ARRAY_END(qtCodeToKey))
                     result = nullptr;
             }
 
             if (!result) {
-                result = qBinaryFind(keyPadQtCodeToKey,
+                result = std::lower_bound(keyPadQtCodeToKey,
                                      _ARRAY_END(keyPadQtCodeToKey), key);
                 if (result == _ARRAY_END(keyPadQtCodeToKey))
                     result = nullptr;