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Diffstat (limited to 'libpng/contrib/conftest/write.dfa')
| -rw-r--r-- | libpng/contrib/conftest/write.dfa | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/libpng/contrib/conftest/write.dfa b/libpng/contrib/conftest/write.dfa new file mode 100644 index 00000000..3319aabe --- /dev/null +++ b/libpng/contrib/conftest/write.dfa @@ -0,0 +1,45 @@ +# write.dfa +# Build time configuration of libpng +# +# Author: John Bowler +# Copyright: (c) John Bowler, 2013 +# 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 no read support and minimal write support. +# + +everything = off + +# Switch on the write code - this makes a minimalist encoder + +option WRITE on + +# Choose fixed or floating point APIs and arithmetic. The choices are +# independent but normally they will match. It is typically better to use the +# floating point if you have floating point hardware. If you don't know, or +# (perhaps) to make libpng smaller used fixed point throughout. + +#Fixed point: +#option FIXED_POINT on +#option FLOATING_ARITHMETIC off + +#Floating point: +option FLOATING_POINT on +option FLOATING_ARITHMETIC on + +# Basic error handling, IO and user memory support. The latter allows the +# application program to provide its own implementations of 'malloc' and 'free'. +option SETJMP on +option STDIO on +option USER_MEM on + +# Everything else is optional. Unlike the read code in libpng the write code +# does not need to deal with arbitrary formats, so only add support for things +# you really do write! For example you might only write sRGB images, sometimes +# with transparency and never write 16 bit images, so: +option WRITE_sRGB on +option WRITE_tRNS on +#option WRITE_16BIT off (this is the default with 'everything = off') |