# write.dfa
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# Build time configuration of libpng
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#
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# Author: John Bowler
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# Copyright: (c) John Bowler, 2013
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# Usage rights:
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# To the extent possible under law, the author has waived all copyright and
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# related or neighboring rights to this work. This work is published from:
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# United States.
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#
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# Build libpng with no read support and minimal write support.
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#
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everything = off
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# Switch on the write code - this makes a minimalist encoder
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option WRITE on
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# Choose fixed or floating point APIs and arithmetic. The choices are
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# independent but normally they will match. It is typically better to use the
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# floating point if you have floating point hardware. If you don't know, or
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# (perhaps) to make libpng smaller used fixed point throughout.
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#Fixed point:
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#option FIXED_POINT on
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#option FLOATING_ARITHMETIC off
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#Floating point:
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option FLOATING_POINT on
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option FLOATING_ARITHMETIC on
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# Basic error handling, IO and user memory support. The latter allows the
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# application program to provide its own implementations of 'malloc' and 'free'.
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option SETJMP on
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option STDIO on
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option USER_MEM on
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# Everything else is optional. Unlike the read code in libpng the write code
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# does not need to deal with arbitrary formats, so only add support for things
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# you really do write! For example you might only write sRGB images, sometimes
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# with transparency and never write 16 bit images, so:
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option WRITE_sRGB on
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option WRITE_tRNS on
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#option WRITE_16BIT off (this is the default with 'everything = off')
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