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Mingw-w64 can be run natively on Microsoft Windows, cross-hosted on Linux (or other Unix), or "cross-native" on MSYS2 or Cygwin. Mingw-w64 can generate 32-bit and 64-bit executables for x86 under the target names i686-w64-mingw32 and x86_64-w64-mingw32 .
MinGW can be run either on the native Microsoft Windows platform, cross-hosted on Linux (or other Unix), or "cross-native" on Cygwin. Although programs produced under MinGW are 32-bit executables, they can be used both in 32 and 64-bit versions of Windows.
It combines the most recent stable release of the GCC toolset, a few patches for Windows-friendliness, and the free and open-source MinGW runtime APIs to create an open-source alternative to Microsoft's compiler and platform SDK. It is able to build 32-bit or 64-bit binaries, for any version of Windows since Windows 98.
Cygwin is provided in two versions: the full 64-bit version and a stripped-down 32-bit version, whose final version was released in 2022. [18] Cygwin consists of a library that implements the POSIX system call API in terms of Windows system calls to enable the running of a large number of application programs equivalent to those on Unix systems ...
In December 2019 Codeweavers released CrossOver 19, providing support for 32 bit Windows applications on an operating system with no 32 bit libraries solving this problem. [5] The technique, known as "wine32on64", requires using modified LLVM to build additional thunk code that allows running 32-bit programs in a 64-bit wine.
The Platform SDK shipped with a compiler that could produce the code needed for these thunks. Versions of 64-bit Windows are also able to run 32-bit applications via WoW64. The SysWOW64 folder located in the Windows folder on the OS drive contains several tools to support 32-bit applications. [22]
The GnuWin32 project provides native ports in the form of executable computer programs, patches, and source code for various GNU and open source tools and software, much of it modified to run on the 32-bit Windows platform. The ports included in the GnuWin32 packages are:
The Thread Information Block (TIB) or Thread Environment Block (TEB) is a data structure in Win32 on x86 that stores information about the currently running thread. It descended from, and is backward-compatible on 32-bit systems with, a similar structure in OS/2. [1] The TIB is officially undocumented for Windows 9x.