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The scripts provided by the MinGW-W64 project are designed for building the dual-target(i686/x86_64) MinGW-W64 compiler for i686/x86_64 hosts. The scripts are distributed under the 'BSD 3' license. In order to use the scripts provided by the MinGW-W64 project it is needed: 1. Windows-64bit or Linux + Wine-64bit 2. Install MSYS: MSYS2: https://sourceforge.net/projects/msys2/files/Alpha-versions/ 3. Get the scripts into '<msys root>/home/<user>/mingw-w64-builds': "cd && git clone <paste correct url>" 4. In the MSYS file structure delete the '/MinGW' directory. 5. Delete the paths pointing to any preinstalled MinGW from the 'PATH' environment variable. 6. Go into the MinGW-builds root directory. "cd && cd mingw-w64-builds" 7. Options: '--mode=[gcc|python|clang]-version' - what package to build with version. '--arch=<i686|x86_64>' - build architecture. '--buildroot=<path>' - using '<path>' as build directory. By default used MSYS user home directory. '--fetch-only' - only download all the sources without start building. '--update-sources' - try to update sources from repositories before build. '--exceptions=<model>' - exceptions handling model. Available: dwarf, seh(gcc>=4.8.0 only), sjlj. '--use-lto' - building with using LTO. '--no-strip' - don't strip executables during install. '--no-multilib' - build GCC without multilib support (default for DWARF and SEH exception models). '--static-gcc' - build static GCC. '--dyn-deps' - build GCC with dynamically dependencies. '--rt-version=<v3|v4>' - version of mingw-w64 runtime to build. '--rev=N' - number of the build revision. '--with-testsuite' - run testsuite for packages that contain flags for it. '--threads=<posix|win32>' - used threads model. '--enable-languages=<langs>' - comma separated list(without spaces) of gcc supported languages. available languages: ada,c,c++,fortran,objc,obj-c++ For more options run: "./build --help" 8. Run: "./build --mode=gcc-4.8.1 --arch=i686" for building i686-MinGW-w64 "./build --mode=gcc-4.8.1 --arch=x86_64" for building x86_64-MinGW-w64 "./build --mode=gcc-4.8.1 --arch=x86_64 --preload" for preload sources and building x86_64-MinGW-w64 "./build --mode=gcc-4.8.1 --arch=i686 --exceptions=dwarf" for building i686-MinGW-w64 with DWARF exception handling For example, during the process of building of the i686-gcc-4.7.2 will be created the following directories: <buildroot>/i686-4.7.2-release-posix-sjlj-rev1/build <buildroot>/i686-4.7.2-release-posix-sjlj-rev1/libs <buildroot>/i686-4.7.2-release-posix-sjlj-rev1/logs <buildroot>/i686-4.7.2-release-posix-sjlj-rev1/prefix For x86_64: <buildroot>/x86_64-4.7.2-release-posix-sjlj-rev1/build <buildroot>/x86_64-4.7.2-release-posix-sjlj-rev1/libs <buildroot>/x86_64-4.7.2-release-posix-sjlj-rev1/logs <buildroot>/x86_64-4.7.2-release-posix-sjlj-rev1/prefix And the sources directory: <buildroot>/mingw-sources The archives with the built MinGW will be created in '<buildroot>/archives/' At the moment, successfully building the following versions: gcc-4.6.2 gcc-4.6.3 gcc-4.6.4 gcc-4.7.0 gcc-4.7.1 gcc-4.7.2 gcc-4.7.3 gcc-4.8.0 gcc-4.8.1 gcc-4.8.2 gcc-4_6-branch (currently 4.6.5 prerelease) gcc-4_7-branch (currently 4.7.4 prerelease) gcc-4_8-branch (currently 4.8.3 prerelease) gcc-trunk (currently 4.9.0 snapshot) Builds also contains patches for building Python 2.7.3, 2.7.4, 2.7.5 and 3.3.0 versions for support gdb pretty printers. Big thanks for these patches to: 2010-2012 Roumen Petrov, Руслан Ижбулатов 2012 Ray Donnelly  http://sourceforge.net/projects/mingw-w64/  http://www.opensource.org/licenses/BSD-3-Clause