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[libpng17] Ported recent changes from libpng16 to libpng17

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Fixed 'minimal' builds. Various obviously useful minimal configurations
  don't build because of missing contrib/libtests test programs and overly
  complex dependencies in scripts/pnglibconf.dfa. This change adds
  contrib/conftest/*.dfa files that can be used in automatic build
  scripts to ensure that these configurations continue to build.
Enabled WRITE_INVERT and WRITE_PACK in contrib/pngminim/encoder.
This commit is contained in:
John Bowler
2013-11-22 17:41:20 -06:00
committed by Glenn Randers-Pehrson
parent 81824079b5
commit 7e2707e2af
35 changed files with 738 additions and 271 deletions
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4
contrib/pngminim/encoder/pngusr.dfa
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@@ -14,6 +14,10 @@ everything = off
option WRITE on
# These 2 options are required if you need to read PBM (P1 or P4) files.
option WRITE_INVERT on
option WRITE_PACK on
# You must choose fixed or floating point arithmetic:
# option FLOATING_POINT on