PLESSEY: add options NCR weighted mod-10, hide check digit(s) in HRT
test suite: now runnable under MSVC 2019, 2017, 2015, MinGW/MSYS
win32/README: update with MSVC 2019 and CMake instructions
The testcommon library, which is outside of this link unit, is
referencing the INTERNAL functions, so despite the name they
need to be exported. The export code is copy&pasted from the
ZINT_EXTERN definition which can't be reused over preprocessor
limitations.
We might just use ZINT_EXTERN instead though
The SHARED attribute is forced via the add_library, so the default
value of cmake is ignored. Also, this option should obviously not
be set for the `zint-static` library
Expose the ability to turn these dependencies off, which results in reduced
functionality. However, it enables a developer using the zint library to
instruct cmake to build a libzint as deployed by e.g. build servers which
don't have png/zint installed, without having to uninstall those libraries
from the development system
The dependency is implied by the target_link_library line. Manual dependencies
are a workaround to force re-execution of external tools with intransparent
side effects
If explicit link flag handling is required, it *should* be handled by
FindPNG, and we should explicitly bind these kind of things to targets,
rather than expanding the global linker flags
I have no apple setup and can therefore not test this commit
This will pick up the local copies of the test data by default, without
needing to create a subdirectory in the backend/tests path and executing
the tests from there. The Current Working Directory can be set if this
proves to be insufficient
Linking against the dynamic zint library requires LD_LIBRARY_PATH and friends
to be set, which complicates the test setup. On the long run, we want to be
able to test both the dynamic and the static (at the same time), though
