The issue is that, by default, Git for Windows checks out text files
with CRLF line endings. This is a problem for awk, which is expecting
Unix-style LF line endings. When cloning on Windows and attempting to
compile on WSL, Mingw or Cygwin, there may be an error from awk.
The fix is to leverage CMake's ability to configure a file and perform
EOL conversions. We copy the awk scripts from the source directory to
the build directory. This portable method ensures they have LF endings,
and the build logic is updated to use the build directory version.
Intentionally avoiding .gitattributes to avoid setting precedent.
Co-authored-by: Christopher Sean Morrison <brlcad@gmail.com>
Co-authored-by: Cosmin Truta <ctruta@gmail.com>
Signed-off-by: Cosmin Truta <ctruta@gmail.com>
Update the ci_*.sh scripts and move them to the more conventional
ci/ directory. Update .appveyor.yml and .travis.yml, as well as
the AUTHORS file, accordingly.
Speed up ci_cmake.sh: add "-DPNG_TESTS=OFF" to the list of CMake
variables if CI_NO_TEST is true.
Remove "sudo: false" from .travis.yml.
Refactor .appveyor.yml.
Delete variables (ALIGN, ARCH, DOCS) and targets (writelock) that are
no longer necessary.
Reorder the object file lists alphabetically, consistently across all
makefiles and build scripts.
Apply other minor fixes.
Exclude the branch "libpng16" from testing. It's identical to "master".
Also exclude the other (non-current) "libpng[0-1][0-7]" branches.
Parallelize the builds and the unit tests.
For Travis CI, update the build matrix as follows:
* On Linux, use both clang and gcc.
* On macOS, use clang only, with and without Xcode.
For AppVeyor CI, add a build matrix as follows:
* On Windows, use Microsoft Visual Studio 2019 on x86, x64 and arm64.
* Also on Windows, use MSYS2 on x86 and x64.
Use the new scripts/ci_*.sh; remove the old scripts/travis.sh.
Currently, libpng supports three different types of build automation:
the GNU autotools, CMake, and a legacy of hand-made makefiles.
In order to simplify the continous integration of all of the above
build options, we introduce the following scripts:
* ci_autotools.sh: CI utility for the Autotools build
* ci_cmake.sh: CI utility for the CMake build
* ci_legacy.sh: CI utility for the legacy makefiles
Delete the files that are unused, redundant, or fundamentally broken:
def.c, makefile.bor, makefile.knr, makefile.msc, makefile.solaris-x86,
makefile.tc3
