The GNU Autoconf Archive is a collection of more than 450 macros for GNU Autoconf that have been contributed as free software by friendly supporters of the cause From all over the Internet. Every single one of those macros can be re-used without imposing any restrictions whatsoever on the licensing of the generated configure script. In particular, it is possible to use all those macros in configure scripts that are meant for non-free software. This policy is unusual for a Free Software Foundation project. The FSF firmly believes that software ought to be free, and software licenses like the GPL are specifically designed to ensure that derivative work based on free software must be free as well. In case of Autoconf, however, an exception has been made, because Autoconf is at such a pivotal position in the software development tool chain that the benefits from having this tool available as widely as possible outweigh the disadvantage that some authors may choose to use it, too, for proprietary software.
The best place to start exploring the Archive is the on-line documentation at <http://www.gnu.org/software/autoconf-archive/>. Here are the compressed sources: http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.06.09.tar.gz (1.1MB) http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.06.09.tar.bz2 (776KB) http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.06.09.tar.xz (520KB) http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.06.09.tar.lz (520KB) Here are the GPG detached signatures[*]: http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.06.09.tar.gz.sig http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.06.09.tar.bz2.sig http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.06.09.tar.xz.sig http://ftpmirror.gnu.org/autoconf-archive/autoconf-archive-2013.06.09.tar.lz.sig Use a mirror for higher download bandwidth: http://www.gnu.org/order/ftp.html [*] Use a .sig file to verify that the corresponding file (without the .sig suffix) is intact. First, be sure to download both the .sig file and the corresponding tarball. Then, run a command like this: gpg --verify autoconf-archive-2013.06.09.tar.gz.sig If that command fails because you don't have the required public key, then run this command to import it: gpg --keyserver keys.gnupg.net --recv-keys 99089D72 and rerun the 'gpg --verify' command. This release was bootstrapped with the following tools: Autoconf 2.69 Automake 1.13.1 Gnulib v0.0-7952-g439b0e9 NEWS * Noteworthy changes in release 2013.06.09 (2013-06-09) [stable] AX_PROG_FLEX has been updated to be more liberal about the name of the flex executable. AX_LIB_HDF5 has been updated to support the variables HDF5_CC, HDF5_FC, and HDF5_LIBS. See <http://savannah.gnu.org/patch/?8026> for further details. AX_XSDCXX has been added; a macro to find the CodeSynthesis XSD executable and the corresponding headers. See <http://savannah.gnu.org/patch/?8011> for further details. AX_PYTHON_DEVEL no longer overrides LOCALMODLIBS. Further details are available at <http://savannah.gnu.org/patch/index.php?8065>. The portability of AX_ZONEINFO has been improved. Further details can be found at <http://savannah.gnu.org/patch/index.php?8029>. The configure flags generated by AX_ENABLE_DEFAULT_ACLOCALDIR have been fixed. AX_CHECK_GLU and AX_CHECK_GLUT have been added again by a new maintainer.
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