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pngcp minimal configuration changes

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Corrections for the pngcp minimal configuration in libpng 1.7 and corrections to
the libpng 1.7 code to fix bugs revealed by the reduced configuration.

Signed-off-by: John Bowler <jbowler@acm.org>
This commit is contained in:
John Bowler
2016-07-01 22:39:13 -07:00
parent eaf7abfdc3
commit 6a574a84bd
8 changed files with 61 additions and 40 deletions
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6
scripts/pnglibconf.dfa
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@@ -939,8 +939,10 @@ option WRITE_zTXt enables WRITE_COMPRESSED_TEXT
# leave the row_pointers member out of the info structure.
option INFO_IMAGE disabled
option READ_PNG requires READ_IMAGE READ_TRANSFORMS enables INFO_IMAGE
option WRITE_PNG requires WRITE WRITE_TRANSFORMS enables INFO_IMAGE
option READ_PNG requires READ_IMAGE READ_TRANSFORMS READ_INTERLACING,
enables INFO_IMAGE
option WRITE_PNG requires WRITE WRITE_TRANSFORMS WRITE_INTERLACING,
enables INFO_IMAGE
# There are four options here, two each for read and write. By default they are
# all switched on.