Add test for pixel_reference_is_mutable metafunction.
From the legacy tests
- port value_core and reference_core fixtures, see
https://lists.boost.org/boost-gil/2019/02/0138.php
- port representative pixel types and verify with tests of some
metafunctions.
Clean up test names for CTest in the CMake configuration.
Disable some GCC/clang warnings in tests to avoid CI build
termination due to too long logs.
Document maintenance rules of `test/legacy/` content.
Motivation to move the `test/legacy/` is to:
* clarify status of those tests
* make it easier to run tests selectively
* separate new/upcoming feature-specific tests
from those all-in-one tests.
Other changes:
Rename `gil_test_common.hpp` to `unit_test.hpp` to make
it clearer it acts as `boost/test/unit_test.hpp proxy`.
Remove `<include>$(BOOST_ROOT)` from `Jamfile`-s as unnecessary.
when building tests with both, Boost.Build and CMake.
Disable concepts check for tests where range (e.g. std::array)
used as image pixel - not fully specialised as acceptable pixel type.
Ignore warnings from boost/concept_check.hpp
Rationalise uses of GCC and clang diagnostic push/pop,
with adding constraint for GCC 4.6+ as minimum version
where the pragma was introduced.
Closes#228
Replace global compile options and definitions with interface targets.
Remove globing for headers.
Set project version based on GIL version.
Remove GIL_BUILD_TESTS option as redundant - there is no point in
using CMake for development of header-only library if no tests
are to be built.
The assignment was superfluous in general case and incorrect in specific
case when the algorithm was given a lambda expression.
The copy assignment operator is defined as deleted for lambda
expressions.
Add minimal test for for_each_pixel algorithm to verify it compiles with
lambda expression.
