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