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Diffstat (limited to 'libpng/contrib/conftest/pngcp.dfa')
| -rw-r--r-- | libpng/contrib/conftest/pngcp.dfa | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/libpng/contrib/conftest/pngcp.dfa b/libpng/contrib/conftest/pngcp.dfa new file mode 100644 index 00000000..15a856e2 --- /dev/null +++ b/libpng/contrib/conftest/pngcp.dfa @@ -0,0 +1,57 @@ +# 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 suppport +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 are just required for specific customizations +option WRITE_CUSTOMIZE_ZTXT_COMPRESSION on +option WRITE_CUSTOMIZE_COMPRESSION on |