- some components and tools have been removed:
- QMake, Linguist, Assistant, checksdk, macdeployqt, pixeltool, qconfig,
- qdoc, qev, qvfb, runonphone and other non-essential
- - Qt3Support, QtWebKit, QtHelp, QtXmlPatterns, QtOpenGL, ActiveQt, Phonon and
- QtMultimedia
+ qdoc, qev, qvfb, runonphone, designer and other non-essential
+ - Qt3Support, QtWebKit, QtHelp, QtXmlPatterns, QtOpenGL, ActiveQt, Phonon,
+ QtMultimedia, QtSql, QtDesigner, QtDesignerComponents and QtScriptTtools
- some things have changed:
- QMake build system replaced with CMake
- - zlib, zstd, OpenSSL, PCRE, Freetype, ICU, X11, libpng and SQLite are
- required for building
- - OpenSSL, D-Bus, CUPS and resolv must be linked to during build
+ - Jansson, Freetype, ICU, X11 and libpng are required for building
+ - D-Bus and CUPS must be linked to during build
- QtUiTools is build as shared library by default
- - moc, uic, rcc, lrelease, lupdate, etc. are linked to components
+ - moc, uic, etc. are linked to components
- updated bundled Harfbuzz from upstream (not Harfbuzz-NG)
- - updated bundled FFTW from upstream
- versioned and extended classes have been merged into the base class,
e.g. QIconEngineV2 into QIconEngine and QKeyEventEx into QKeyEvent
- QGuiPlatformPlugin class is public
- - updated localizations data from Common Locale Data Repository v38
- - SQLite driver uses UTF-8 encoding instead of UTF-16
- - default text codec for C-strings is UTF-8
+ - updated localizations data from Common Locale Data Repository v42
+ - QTranslator uses gettext for translations
- OpenVG is no longer supported graphics output
- Blitter is no longer supported painting engine
- - native graphics system is no more, rasterizer is just as fast as native
+ - native graphics system is no more, rasterizer is faster than native
- QPicture, QPictureIO and plugins for it are no longer supported
- QML debugger and inspector have been removed, potentially dangerous
- no SIMD, zero performance impact with decent compiler
- state machine is no more
- - removed non-open source DB2, OCI, TDS and InterBase database drivers
- removed 3rd party sources that are very common nowdays
- dropped non-open source and discontinued platforms support
- dropped dnotify filesystem watcher support
- dropped Motif Drag-And-Drop (DND) support
- dropped LPR support
- dropped static plugins support
- - dropped MNG image format support
- - dropped obscure (24-bit) image formats support
+ - dropped XBM, PGM, MNG, BMP, ICO, TGA, JPEG, TIFF and GIF image format support
+ - dropped obscure (24-bit) and indexed (8-bit) image formats support
- dropped Valgrind support
+ - dropped recursive mutex and lock support
+ - dropped wide character and string support
+ - dropped network interfaces management support
+ - dropped no-op touch devices support
+ - dropped bitmap fonts support
+ - dropped accessibility support
- - some additions have been made:
- - JSON classes and types
- - command line parser
+ - some additions have been made:
+ - custom image format
+ - custom translations format
+ - custom hash algorithm
+ - JSON document handler
- standard directories handler
- - building with OpenSSL v1.1+ is possible
- - building with IODBC instead of unixODBC is possible
- building with LTO is possible and supported, if the toolchain can handle it
- - building without resolv is possible
- alternative libc implementations support
- additional text codecs via ICU converter
- Unicode v5.0+ characters and partial scripts support
- support for AArch64 architecture
- support for locale aliases
- - support for generating SHA-224, SHA-256, SHA-384, SHA-512 hash sums (SHA-2)
- - support for generating CRC-32 checksums via qChecksum32() function
- - verification section for plugins build with Clang
- - faster alternatives to qCompress() and qUncompress()
- - stack unwinding on assert or crash via libunwind
+ - support for generating SHA-256 and SHA-512 hash sums (SHA-2)
+ - qCompress() and qUncompress() use libdeflate which is much faster
+ - stack backtrace on assert, crash or warning via execinfo
- brief manual pages for all command-line tools
- desktop files, Shell profile and dynamic linker/loader config
- - automatic async D-Bus calls based on return type, no Q_NOREPLY needed
- more reliable qrand(), seeded per thread
- improved signal/slot template arguments handling
- - improved OpenSSL default certificate and certificates directory detection
- improved namespaces support and introduced QT_NAMESPACE_COMPAT
- improved cross-compilation support
- improved POSIX, XSI, SUSv2, etc. requirements build checks
- - improved Large File Support (LFS) requirements checks
- - script component relies on PCRE instead of internal copy
+ - script component uses QRegExp instead of internal PCRE copy
- tests and benchmarks can be run without prior installation
Bugs fixed in Katie, some of which in Qt5 too:
QTBUG-39285, QTBUG-18173, QTBUG-28968, QTBUG-34336, QTBUG-40974, QTBUG-44286,
QTBUG-12564, QTBUG-20028, QTBUG-71967, QTBUG-70956, QTBUG-71446, QTBUG-61307,
QTBUG-27287, QTBUG-25143, QTBUG-22833, QTBUG-57399, QTBUG-59159, QTBUG-15773,
-QTBUG-70506, QTBUG-46054, QTBUG-11223
+QTBUG-70506, QTBUG-46054, QTBUG-11223, QTBUG-63108, QTBUG-6932, QTBUG-42365,
+QTBUG-83817, QTBUG-4341, QTBUG-36933, QTBUG-49113, QTBUG-69920, QTBUG-40015,
+QTBUG-54942, QTBUG-91261, QTBUG-73445, QTBUG-21098, QTBUG-59966, QTBUG-85520
Unless you use QMake and QDoc porting to Katie or even supporting it along with
Qt4 in the same codebase is trivial and requires only minor changes because
Katie is mostly source compatible with Qt 4.8.x, compatibility with releases
earlier than that is not a goal. Do note that using libraries that
are linked to Qt4 from applications linked to Katie will trigger undefined
-behaviour.
-
-Should you enouncter a problem please report it at
-https://github.com/fluxer/katie/issues. For more information about changes,
-how to handle them and general info please visit
-https://github.com/fluxer/katie/wiki.
+behavior.
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