MinGW for Perl provides a distribution of the 32 bit and 64 bit compilers from the mingw-w64 project bundled to provide support for Perl development. Tools are compiled for c, c++ and fortran.
Currently the distribution is built from:
GCC 4.6.4 release.
mingw-w64 crt v.2.0.8 stable r5746
pthreads-win32 cvs 20100527
The distributions are compiled as a native bootstrap under MSYS. In addition to the compilers the complete prepared environment used to create them is available as a single download.
The build Makefile is based almost entirely on the Makefile for a multilib build from the TDM-GCC project at http://tdm-gcc.tdragon.net/. Patches to help msys build and relocation are taken from here. ( The TDM-GCC patches for static libraries have not been applied).
Many additional tools and patches are taken from the sezero personal builds of gcc 4.5.4 available at http://mingw-w64.sourceforge.net/