This is needed to work around a build failure when this test fails, as
it spuriously does when cross-compiling for MinGW using v10 API package,
see https://sourceforge.net/p/mingw-w64/bugs/935/ for more details.
Of course, the fact that the build fails if snprintf() is unavailable is
actually a bug, but in practice this function is available everywhere by
now, so simply stop testing for it.
This mostly cherry picks ceff22ee (Use C99 snprintf, 2021-01-31), but
keeps the test for MSVC versions without vsnprintf() for compatibility.
0001-ci-Add-Travis-support-for-Linux-builds-with-Autoconf.patch by
Roger Leigh (sent to mailing list on 2017-06-08)
This patch adds support for the Travis-CI service.
* .appveyor.yml: new file from
0002-ci-Add-AppVeyor-support.patch by Roger Leigh (sent to mailing
list on 2017-06-08)
This patch adds a .appveyor.yml file to the top-level. This allows
one to opt in to having a branch built on Windows with Cygwin,
MinGW and MSVC automatically when a branch is pushed to GitHub,
GitLab, BitBucket or any other supported git hosting service.
* CMakeLists.txt, test/CMakeLists.txt, test/TiffTestCommon.cmake: apply
patch 0001-cmake-Improve-Cygwin-and-MingGW-test-support.patch from Roger
Leigh (sent to mailing list on 2017-06-08)
This patch makes the CMake build system support running the tests
with MinGW or Cygwin.
