58 lines
1.9 KiB
Plaintext
58 lines
1.9 KiB
Plaintext
# pngcp.dfa
|
|
# Build time configuration of libpng
|
|
#
|
|
# Author: John Bowler
|
|
# Copyright: (c) John Bowler, 2016
|
|
# Usage rights:
|
|
# To the extent possible under law, the author has waived all copyright and
|
|
# related or neighboring rights to this work. This work is published from:
|
|
# United States.
|
|
#
|
|
# Build libpng with support for pngcp. This means just png_read_png,
|
|
# png_write_png and small number of configuration settings.
|
|
#
|
|
everything = off
|
|
|
|
# This option is specific to this configuration; it adds a #define to the
|
|
# generated pnglibconf.h which turns on the (not portable) timing option for
|
|
# pngcp. Note that any option is automatically preceded by PNG_; there is no
|
|
# way round this and this is deliberate.
|
|
option PNGCP_TIMING
|
|
|
|
# Because of the everything off above the option must also be turned on. This
|
|
# may not be done in one step because it is safer and avoids mis-spelled options
|
|
# in user .dfa files to error out if an unrecognized option is turned on.
|
|
option PNGCP_TIMING on
|
|
|
|
# Options to turn on png_read_png and png_write_png:
|
|
option INFO_IMAGE on
|
|
option SEQUENTIAL_READ on
|
|
option EASY_ACCESS on
|
|
option WRITE on
|
|
option WRITE_16BIT on
|
|
option WRITE_FILTER on
|
|
|
|
# pngcp needs this to preserve unknown chunks, switching all these on means that
|
|
# pngcp can work without explicit known chunk reading support
|
|
option UNKNOWN_CHUNKS on
|
|
option SET_UNKNOWN_CHUNKS on
|
|
option HANDLE_AS_UNKNOWN on
|
|
option SAVE_UNKNOWN_CHUNKS on
|
|
option WRITE_UNKNOWN_CHUNKS on
|
|
|
|
# pngcp needs this to handle palette files with invalid indices:
|
|
option CHECK_FOR_INVALID_INDEX on
|
|
option GET_PALETTE_MAX on
|
|
|
|
# Pre-libpng 1.7 pngcp has to stash text chunks manually, post 1.7 without this
|
|
# text chunks should be handled as unknown ok.
|
|
option TEXT on
|
|
|
|
# this is used to turn off limits:
|
|
option USER_LIMITS on
|
|
option SET_USER_LIMITS on
|
|
|
|
# these are just required for specific customizations
|
|
option WRITE_CUSTOMIZE_ZTXT_COMPRESSION on
|
|
option WRITE_CUSTOMIZE_COMPRESSION on
|