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Development tools

• The WineDump tool supports printing the contents of Windows registry files (REGF format), as well as printing data for both architectures in hybrid x86/ARM64 PE files.
• The composable, default_overload, deprecated, and protected attributes are supported in the IDL compiler.
• The libwine.so library is removed. It was no longer used, and deprecated since Wine 6.0. Winelib ELF applications that were built with Wine 5.0 or older will need a rebuild to run on Wine 9.0.

Bundled libraries

• The FluidSynth library version 2.3.3 is bundled and used for DirectMusic.
• The math library of Musl version 1.2.3 is bundled and used for the math functions of the C runtime.
• The Zydis library version is 4.0.0 is bundled and used for x86 disassembly support.
• Vkd3d is updated to the upstream release 1.10.
• Faudio is updated to the upstream release 23.12.
• LDAP is updated to the upstream release 2.5.16.
• LCMS2 is updated to the upstream release 2.15.
• LibMPG123 is updated to the upstream release 1.32.2.
• LibPng is updated to the upstream release 1.6.40.
• LibTiff is updated to the upstream release 4.6.0.
• LibXml2 is updated to the upstream release 2.11.5.
• LibXslt is updated to the upstream release 1.1.38.
• Zlib is updated to the upstream release 1.3.

External dependencies

• The Wayland client library, as well as the xkbcommon and xkbregistry libraries, are used when building the Wayland driver.
• The PCSClite library is used for smart card support. On macOS, the PCSC framework can be used as an alternative to PCSClite.
• For PE builds, a cross-compiler that supports .seh directives for exception handling is required on all platforms except i386.