license: BSD-3-Clause
1999-2011 Google,Inc
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license: FSFUL
1992-2008 Free Software Foundation,Inc
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license: FSFULLR
1996-2008 Free Software Foundation,Inc
-----
license: FSFULLRWD
1996-2008 Free Software Foundation,Inc
-----
license: GPL-2.0-or-later WITH Autoconf-exception-generic
1992-2008 Free Software Foundation,Inc
-----
license: GPL-2.0-or-later WITH Libtool-exception
1992-2008 Free Software Foundation,Inc
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license: public-domain
1994 X Consortium
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license: X11
1994 X Consortium