| Sireesh Tripurari | b478e66 | 2014-05-09 15:15:10 +0530 | [diff] [blame] | 1 | # write.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 no read support and minimal write support. |
| 12 | # |
| 13 | |
| 14 | everything = off |
| 15 | |
| 16 | # Switch on the write code - this makes a minimalist encoder |
| 17 | |
| 18 | option WRITE on |
| 19 | |
| 20 | # Choose fixed or floating point APIs and arithmetic. The choices are |
| 21 | # independent but normally they will match. It is typically better to use the |
| 22 | # floating point if you have floating point hardware. If you don't know, or |
| 23 | # (perhaps) to make libpng smaller used fixed point throughout. |
| 24 | |
| 25 | #Fixed point: |
| 26 | #option FIXED_POINT on |
| 27 | #option FLOATING_ARITHMETIC off |
| 28 | |
| 29 | #Floating point: |
| 30 | option FLOATING_POINT on |
| 31 | option FLOATING_ARITHMETIC on |
| 32 | |
| 33 | # Basic error handling, IO and user memory support. The latter allows the |
| 34 | # application program to provide its own implementations of 'malloc' and 'free'. |
| 35 | option SETJMP on |
| 36 | option STDIO on |
| 37 | option USER_MEM on |
| 38 | |
| 39 | # Everything else is optional. Unlike the read code in libpng the write code |
| 40 | # does not need to deal with arbitrary formats, so only add support for things |
| 41 | # you really do write! For example you might only write sRGB images, sometimes |
| 42 | # with transparency and never write 16 bit images, so: |
| 43 | option WRITE_sRGB on |
| 44 | option WRITE_tRNS on |
| 45 | #option WRITE_16BIT off (this is the default with 'everything = off') |