1 This directory contains test configuration files, currently always '.dfa' files 2 intended to be used in the build by setting the make macro DFA_XTRA to the name 3 of the file. 4 5 These files are used in release validation of the 'configure' builds of libpng 6 by building 'make check', or 'make all-am' for cross-builds, with each .dfa 7 file. 8 9 The files in this directory may change between minor releases, however 10 contributions describing specific builds of libpng are welcomed. There is no 11 guarantee that libpng will continue to build with such configurations; support 12 for given configurations can be, and has been, dropped between successive minor 13 releases. However if a .dfa file describing a configuration is not in this 14 directory it is very unlikely that it will be tested before a minor release! 15 16 You can use these .dfa files as the basis of new configurations. Files in this 17 directory should not have any use restrictions or restrictive licenses. 18 19 This directory is not included in the .zip and .7z distributions, which do 20 not contain 'configure' scripts. 21 22 DOCUMENTATION 23 ============= 24 25 Examples: 26 ${srcdir}/pngusr.dfa 27 ${srcdir}/contrib/pngminim/*/pngusr.dfa 28 29 Documentation of the options: 30 ${srcdir}/scripts/pnglibconf.dfa 31 32 Documentation of the file format: 33 ${srcdir}/scripts/options.awk 34 35 FILE NAMING 36 =========== 37 38 File names in this directory may NOT contain any of the five characters: 39 40 - , + * ? 41 42 Neither may they contain any space character. 43 44 While other characters may be used it is strongly suggested that file names be 45 limited to lower case Latiin alphabetic characters (a-z), digits (0-9) and, if 46 necessary the underscore (_) character. File names should be about 8 characters 47 long (excluding the .dfa extension). Submitted .dfa files should have names 48 between 7 and 16 characters long, shorter names (6 characters or less) are 49 reserved for standard tests. 50
