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