This is libio, the GNU C/C++ input/output library. By default, the library is configured to build the C++ iostream facility (in $libdir/libiostream.a). The library can be configured to build the C stdio facility that is part of a C run-time library. This library is distributed with libg++; see ../libg++/README for installation instructions, and where to send bug reports and questions. * Copyright restrictions The files in this directory are generally covered by the GNU Public License (which is in the file ../COPYING), but modified with the following: As a special exception, if you link this library with files compiled with a GNU compiler to produce an executable, this does not cause the resulting executable to be covered by the GNU General Public License. This exception does not however invalidate any other reasons why the executable file might be covered by the GNU General Public License. A few source files and subroutines are covered by other (but less restrictive) copyright conditions. E.g. some code (such as iovfprintf.c) is based on software that was developed by the University of California, Berkeley, for the Berkeley Software Distribution (BSD-4.4), and bears their copyright; and one file (floatconv.c) is derived from ("free") code copyrighted AT&T.