$Id$
Public domain.  Originally created by Karl Berry, 2005.

Libraries we compile for TeX Live.

All libraries use the original source tree with all modifications
maintained as patches and use a proxy build system, either
bypassing or using the original one.

See also comments in ../texk/README.

cairo 1.16.0 - no longer checked
  https://cairographics.org/releases/
  There are later releases than this, but they removed autotools support.
  Since cairo is only used by MetaPost (for png output), and 1.16.0
  seems fine for that, not taking the time and trouble to update.

freetype2 2.13.3 - checked 13aug24
  https://download.savannah.gnu.org/releases/freetype/

gd 2.3.3 - checked 13sep21
  https://github.com/libgd/libgd/releases

gmp 6.2.1 - checked 15nov20
  https://ftp.gnu.org/gnu/gmp/

graphite2 1.3.14 - checked 10apr20
  https://sourceforge.net/projects/silgraphite/files/graphite2/
  (requires C++11)

harfbuzz 10.2.0 - checked 12jan25
  https://github.com/harfbuzz/harfbuzz/releases/latest

icu 76.1 - checked 27oct24 (requires C++17, e.g., g++13)
  https://github.com/unicode-org/icu/releases/

libpaper 1.1.29 - checked 07jan24
  https://ftp.debian.org/debian/pool/main/libp/libpaper/

libpng 1.6.45 - checked 08jan25
  https://sourceforge.net/projects/libpng/files/ - used by many

lua 5.2.4
lua 5.3.6 - checked 04oct20
  https://www.lua.org/ftp/
  Lua updates must be done carefully, by the LuaTeX maintainer,
  since Lua changes generally imply new incompatibilities.

luajit 2.1.0-beta3 - checked 20jun17
  https://luajit.org/download/LuaJIT-2.1.0-beta3.tar.gz
  As with Lua.

mpfi 1.5.4 - checked 1feb24
  https://perso.ens-lyon.fr/nathalie.revol/software.html#download
  
mpfr 4.2.1 - checked 1feb24
  https://ftp.gnu.org/gnu/mpfr/

pixman 0.42.2 - no longer checked
  https://cairographics.org/releases/
  See cairo above.

potrace 1.16 - checked 29aug22
  https://potrace.sourceforge.net/

pplib 2.05.0 - checked 21apr20
  https://github.com/contextgarden/pplib

teckit 2.5.12 - checked 26aug23
  https://github.com/silnrsi/teckit/archive/2.5.12.tar.gz

xpdf 4.04 - checked 24apr22
  https://www.xpdfreader.com/download.html
  with modifications for pdftex

zlib 1.3.1 - checked 30jan24
  https://www.zlib.net/ - used by many

zziplib 0.13.72 - checked 10sep22
  https://github.com/gdraheim/zziplib/releases