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23bdc7a6c4
Running the pnglibconf scripts (script/*.awk) is not always possible. An AWK interpreter is not always guaranteed to be available; and even if it is, there are limitations when making cross-platform libpng builds, especially when the differences between the host platform and the target platform are significant. For example: * Building for the Windows (MinGW) target on a Unix development host; * Building for the iOS target on a macOS development host; * Building for the Android target on any development host. In such scenarios, a preconfigured (i.e. prebuilt) pnglibconf.h file, either taken from the libpng source tree or provided by the user who wants to make a custom libpng build, becomes a necessity. In this commit we introduce the build option `PNG_LIBCONF_HEADER` in order to address this specific use case. We also specify a version range (3.14...4.0) for the minimum required CMake program, to future-proof the CMake build for just a little bit longer. Signed-off-by: Cosmin Truta <ctruta@gmail.com>
CMake Files, Lists and Scripts for the PNG Reference Library
Copyright Notice
- Copyright (c) 2018-2024 Cosmin Truta.
- Copyright (c) 2007-2018 Glenn Randers-Pehrson.
- Originally written by Christian Ehrlicher, 2007.
Use, modification and distribution of the CMake
files in the libpng distribution are subject to
the same licensing terms and conditions as libpng.
Please see the copyright notice in png.h or visit
http://libpng.org/pub/png/src/libpng-LICENSE.txt
File List
CMakeLists.txt ==> The main CMake lists file
scripts/cmake/AUTHORS.md ==> The Authors file
scripts/cmake/README.md ==> This file
scripts/cmake/PNGConfig.cmake ==> Config file for FindPNG
scripts/cmake/genchk.cmake.in ==> Template for genchk.cmake
scripts/cmake/genout.cmake.in ==> Template for genout.cmake
scripts/cmake/gensrc.cmake.in ==> Template for gensrc.cmake
scripts/cmake/test.cmake.in ==> Template for test.cmake
Acknowledgements
See the accompanying file scripts/cmake/AUTHORS.md
for the list of Contributing Authors.
If you are a Contributing Author, please make sure that you are being acknowledged.