Gcc requires that an unpatched, pristine version of autoconf be used when preparing patches for official submission. For various reasons [1] these pristine versions cannot coexist with the existing mingw32-autoconf packages in /mingw. This package provides autoconf-2.64 and installs into /mingw/opt/gcc-tools/epoch2/{bin,share} for use when developing gcc-4.5.x and gcc-4.6.x. It is also used when building gettext-0.18.1.1. gcc-4.3.x and gcc-4.4.x development requires autoconf-2.59 gcc-4.5.x and gcc-4.6.x development requires autoconf-2.64 [1] http://cygwin.com/ml/cygwin-apps/2009-01/msg00007.html Autoconf is an extensible package of M4 macros that produce shell scripts to automatically configure software source code packages. These scripts can adapt the packages to many kinds of UNIX-like systems without manual user intervention. Autoconf creates a configuration script for a package from a template file that lists the operating system features that the package can use, in the form of M4 macro calls. Gcc requires that an unpatched, pristine version of automake be used when preparing patches for official submission. For various reasons [1] these pristine versions cannot coexist with the existing mingw32-automake packages in /mingw. This package provides automake-1.11 and installs into /mingw/opt/gcc-tools/epoch2/{bin,share} for use when developing gcc-4.5.x and gcc-4.6.x. It is also used when building gettext-0.18.1.1. gcc-4.3.x and gcc-4.4.x development requires the latest release in the automake-1.9.x series. gcc-4.5.x and gcc-4.6.x development requires the latest release in the automake-1.11.x series. [1] http://cygwin.com/ml/cygwin-apps/2009-01/msg00007.html Automake is a tool for automatically generating Makefile.in files compliant with the GNU Coding Standards. Automake requires the use of Autoconf.