2 # Build time configuration of libpng
5 # Copyright: (c) John Bowler, 2013
7 # To the extent possible under law, the author has waived all copyright and
8 # related or neighboring rights to this work. This work is published from:
11 # Build libpng with simplified read support (only). This builds a minimal
12 # libpng able to read all PNG formats and convert them into a small number of
13 # well understood memory formats.
18 option SIMPLIFIED_READ on
20 # It isn't necessary to chose fixed or floating point for the APIs because the
21 # simplified API doesn't need fixed or floating point numbers. It is necessary
22 # to chose an internal math implementation. The default (because of 'everything
23 # = off') is fixed point - turn the floating point implementation on if you have
24 # hardware floating point or prefer your software floating point implementation.
25 option FLOATING_ARITHMETIC on
27 # This is not strictly necessary, but without it the message strings in the API
28 # will not be filled in
31 # Switching these options on enables the 'AFIRST' and 'BGR' formats - you don't
32 # need this if you don't use them, they just allow the in-memory layout to be
33 # changed to match common hardware formats.
34 option SIMPLIFIED_READ_AFIRST on
35 option SIMPLIFIED_READ_BGR on