I propose changing the default `-std=` compiler flag from the non-
standard `gnu++11` to `c++11`. Our code is fully C++11 compliant and
that should be reflected in the C++ standard we choose as default.
Furthermore there's an ambiguity as we make people use
`-DCMAKE_CXX_FLAGS="-std=c++11"` when this is already handled
(differently) in `CMakeLists.txt`. See the [pixls.us](https://discuss.pixls.us/t/rawtherapee-5-and-dcmake-cxx-flags/3145/3)
discussion. You also see it in `AboutThisBuild.txt`:
```
Build flags: -std=c++11 -Wno-deprecated-declarations -Wno-unused-result -std=gnu++11 -march=native -Werror=unused-label -fopenmp -Werror=unknown-pragmas -O3 -DNDEBUG
```
This commit changes `-std=gnu++11` to `-std=c++11` and builds fine
without `-DCMAKE_CXX_FLAGS="-std=c++11"`.
...(i.e. including when building the index), with the help of
-DCMAKE_ECLIPSE_VERSION="4.6.0" (set to your version, of course) on the
command line. Without this, the declared symbols are wrong and c++11 is
not supported by the IDE (vs the build makefiles).
Most conflicts seemed to be simple enough. There were a lot of `append_text` to
`append` conversions for `Gtk::ComboBoxText`. The `PopUpCommon` class also saw
a lot of changes with non-trivial conflict resolutions.
resized, and display a tooltip.
The ICM tool has been reworked to avoid loosing space.
The curve's histogram are now displayed.
For Windows users, if you can't build the Gtk3 branch anymore with your
Gcc5.x compiler, try to uncomment line 20-21 of the main CMakeLists.txt.
For some reason, I had to comment that out.
