1 # s_read.dfa 2 # Build time configuration of libpng 3 # 4 # Author: John Bowler 5 # Copyright: (c) John Bowler, 2013 6 # Usage rights: 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: 9 # United States. 10 # 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. 14 # 15 16 everything = off 17 18 option SIMPLIFIED_READ on 19 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 26 27 # This is not strictly necessary, but without it the message strings in the API 28 # will not be filled in 29 option ERROR_TEXT on 30 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 36
