4 files changed, 36 insertions, 12 deletions
diff --git a/src/gui/accessible/linux/qspimatchrulematcher.cpp b/src/gui/accessible/linux/qspimatchrulematcher.cpp
index d7047ad3e0e..48357f7ae63 100644
--- a/src/gui/accessible/linux/qspimatchrulematcher.cpp
+++ b/src/gui/accessible/linux/qspimatchrulematcher.cpp
@@ -23,11 +23,11 @@ QSpiMatchRuleMatcher::QSpiMatchRuleMatcher(const QSpiMatchRule &matchRule)
       m_interfaceMatchType(matchRule.interfaceMatchType)
 {
     // extract roles encoded in bitset stored in multiple 32 bit integers
-    std::unordered_set<AtspiRole> atSpiRoles;
-    for (int i = 0; i < matchRule.roles.size(); ++i) {
+    for (qsizetype i = 0; i < matchRule.roles.size(); ++i) {
+        const auto role = matchRule.roles.at(i);
         for (int j = 0; j < 32; j++) {
-            if (matchRule.roles.at(i) & (1 << j)) {
-                const int atspiRole = i * 32 + j;
+            if (role & (1 << j)) {
+                const auto atspiRole = i * 32 + j;
                 if (atspiRole < ATSPI_ROLE_LAST_DEFINED)
                     m_roles.insert(AtspiRole(atspiRole));
                 else
@@ -38,6 +38,7 @@ QSpiMatchRuleMatcher::QSpiMatchRuleMatcher(const QSpiMatchRule &matchRule)
     }
 
     // use qualified interface names to match what accessibleInterfaces() returns
+    m_interfaces.reserve(matchRule.interfaces.size());
     for (const QString &ifaceName : matchRule.interfaces)
         m_interfaces.push_back("org.a11y.atspi."_L1 + ifaceName);
 }
diff --git a/src/gui/configure.cmake b/src/gui/configure.cmake
index dac2d072e42..b14f7e74ad2 100644
--- a/src/gui/configure.cmake
+++ b/src/gui/configure.cmake
@@ -30,6 +30,7 @@ set_property(CACHE INPUT_libpng PROPERTY STRINGS undefined no qt system)
 #### Libraries
 qt_set01(X11_SUPPORTED LINUX OR HPUX OR FREEBSD OR NETBSD OR OPENBSD OR SOLARIS OR
     HURD)
+qt_feature_vcpkg_scope(gui)
 qt_find_package(ATSPI2 MODULE PROVIDED_TARGETS PkgConfig::ATSPI2 MODULE_NAME gui QMAKE_LIB atspi)
 qt_find_package(DirectFB PROVIDED_TARGETS PkgConfig::DirectFB MODULE_NAME gui QMAKE_LIB directfb)
 qt_find_package(Libdrm MODULE PROVIDED_TARGETS Libdrm::Libdrm MODULE_NAME gui QMAKE_LIB drm)
@@ -39,15 +40,26 @@ qt_find_package(PlatformGraphics
 qt_find_package(EGL MODULE PROVIDED_TARGETS EGL::EGL MODULE_NAME gui QMAKE_LIB egl)
 
 qt_find_package(WrapSystemFreetype 2.2.0 MODULE
-    PROVIDED_TARGETS WrapSystemFreetype::WrapSystemFreetype MODULE_NAME gui QMAKE_LIB freetype)
+    PROVIDED_TARGETS WrapSystemFreetype::WrapSystemFreetype MODULE_NAME gui QMAKE_LIB freetype
+    VCPKG_PORT freetype
+    VCPKG_ADD_TO_FEATURE freetype
+)
 if(QT_FEATURE_system_zlib)
     qt_add_qmake_lib_dependency(freetype zlib)
 endif()
-qt_find_package(Fontconfig PROVIDED_TARGETS Fontconfig::Fontconfig MODULE_NAME gui QMAKE_LIB fontconfig)
+qt_find_package(Fontconfig PROVIDED_TARGETS Fontconfig::Fontconfig MODULE_NAME gui
+    QMAKE_LIB fontconfig
+    VCPKG_PORT fontconfig
+    VCPKG_ADD_TO_FEATURE fontconfig
+    VCPKG_PLATFORM "linux"
+)
 qt_add_qmake_lib_dependency(fontconfig freetype)
 qt_find_package(gbm MODULE PROVIDED_TARGETS gbm::gbm MODULE_NAME gui QMAKE_LIB gbm)
 qt_find_package(WrapSystemHarfbuzz 2.6.0 MODULE
-    PROVIDED_TARGETS WrapSystemHarfbuzz::WrapSystemHarfbuzz MODULE_NAME gui QMAKE_LIB harfbuzz)
+    PROVIDED_TARGETS WrapSystemHarfbuzz::WrapSystemHarfbuzz MODULE_NAME gui QMAKE_LIB harfbuzz
+    VCPKG_PORT harfbuzz
+    VCPKG_ADD_TO_FEATURE harfbuzz
+)
 qt_find_package(Libinput MODULE
     PROVIDED_TARGETS Libinput::Libinput MODULE_NAME gui QMAKE_LIB libinput)
 qt_find_package_extend_sbom(TARGETS Libinput::Libinput
@@ -61,11 +73,20 @@ qt_find_package_extend_sbom(TARGETS Libinput::Libinput
         "Copyright © 2013-2015 Red Hat, Inc."
 )
 qt_find_package(WrapSystemJpeg MODULE
-    PROVIDED_TARGETS WrapSystemJpeg::WrapSystemJpeg MODULE_NAME gui QMAKE_LIB libjpeg)
+    PROVIDED_TARGETS WrapSystemJpeg::WrapSystemJpeg MODULE_NAME gui QMAKE_LIB libjpeg
+    VCPKG_PORT libjpeg-turbo
+    VCPKG_ADD_TO_FEATURE jpeg
+)
 qt_find_package(WrapSystemMd4c MODULE
-    PROVIDED_TARGETS WrapSystemMd4c::WrapSystemMd4c MODULE_NAME gui QMAKE_LIB libmd4c)
+    PROVIDED_TARGETS WrapSystemMd4c::WrapSystemMd4c MODULE_NAME gui QMAKE_LIB libmd4c
+    VCPKG_PORT md4c
+    VCPKG_ADD_TO_FEATURE textmarkdownreader
+)
 qt_find_package(WrapSystemPNG MODULE
-    PROVIDED_TARGETS WrapSystemPNG::WrapSystemPNG MODULE_NAME gui QMAKE_LIB libpng)
+    PROVIDED_TARGETS WrapSystemPNG::WrapSystemPNG MODULE_NAME gui QMAKE_LIB libpng
+    VCPKG_PORT libpng
+    VCPKG_ADD_TO_FEATURE png
+)
 if(QT_FEATURE_system_zlib)
     qt_add_qmake_lib_dependency(libpng zlib)
 endif()
diff --git a/src/gui/painting/qcolorspace.cpp b/src/gui/painting/qcolorspace.cpp
index 9149971b999..680bdef3ac9 100644
--- a/src/gui/painting/qcolorspace.cpp
+++ b/src/gui/painting/qcolorspace.cpp
@@ -1205,9 +1205,9 @@ QByteArray QColorSpace::iccProfile() const
 */
 QColorSpace QColorSpace::fromIccProfile(const QByteArray &iccProfile)
 {
+    QColorSpace colorSpace;
     // Must detach if input is fromRawData(); nullTerminated() is trick to do that and nothing else
     QByteArray ownedIccProfile = iccProfile.nullTerminated();
-    QColorSpace colorSpace;
     if (QIcc::fromIccProfile(ownedIccProfile, &colorSpace))
         return colorSpace;
     colorSpace.detach();
diff --git a/src/gui/text/qfont.cpp b/src/gui/text/qfont.cpp
index 7ffb688c035..2b2f2a27fcd 100644
--- a/src/gui/text/qfont.cpp
+++ b/src/gui/text/qfont.cpp
@@ -1829,6 +1829,8 @@ bool QFont::operator==(const QFont &f) const
 */
 bool QFont::operator<(const QFont &f) const
 {
+    // NB: This operator actually implements greater-than, because it consistently
+    //     swaps LHS (should be *this, but is `f`) and RHS (should be `f`, but is *this)
     if (f.d == d) return false;
     // the < operator for fontdefs ignores point sizes.
     const QFontDef &r1 = f.d->request;
@@ -2199,7 +2201,7 @@ QString QFont::toString() const
 
     fontDescription += comma + QString::number(sortedFeatures.size());
     for (const auto &[tag, value] : std::as_const(sortedFeatures).asKeyValueRange())
-        fontDescription += comma + tag.toString() + u'=' + QString::number(value);
+        fontDescription += comma + QLatin1StringView{tag.toString()} + u'=' + QString::number(value);
 
     return fontDescription;
 }