Cannot compile any_image example from the docs

[HappySeaFox]

Hi! Could you please help with compiling the code sample from the GIL docs:

Actual behavior

I copy-pasted the following code sample from the docs

#include <boost/gil.hpp>
#include <boost/gil/extension/dynamic_image/any_image.hpp>
#include <boost/gil/extension/io/jpeg.hpp>
#include <boost/gil/extension/io/png.hpp>
#include <boost/mpl/vector.hpp>

using namespace boost;
using namespace boost::gil;

...

typedef mpl::vector< gray8_image_t
                   , gray16_image_t
                   , rgb8_image_t
                   , rgba8_image_t
                   > my_img_types;

any_image< my_img_types > runtime_image;

read_image( ""
          , runtime_image
          , tiff_tag()
          );

from https://www.boost.org/doc/libs/1_75_0/libs/gil/doc/html/io.html

Even after fixing rgba_image_t -> rgba8_image_t, it still complains:

D:\projects\git.vcpkg\installed\x64-windows\include\boost/gil/extension/dynamic_image/any_image.hpp(31,32): error C2794: 'view_t': is not a member of any direct or indirect base class of 'boost::mpl::vector<boost::gil::gray8_image_t,boost::gil::gray16_image_t,boost::gil::rgb8_image_t,boost::gil::rgba8_image_t,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na,boost::mpl::na>' [D:\projects\git.sail-benchmark\build\sail-benchmark-gil.vcxproj]
D:\projects\git.vcpkg\installed\x64-windows\include\boost/mp11/algorithm.hpp(52): message : see reference to alias template instantiation 'boost::gil::detail::get_view_t<my_img_types>' being compiled [D:\projects\git.sail-benchmark\build\sail-benchmark-gil.vcxproj]
D:\projects\git.vcpkg\installed\x64-windows\include\boost/gil/extension/dynamic_image/any_image.hpp(34): message : see reference to class template instantiation 'boost::mp11::detail::mp_transform_impl<boost::gil::detail::get_view_t,boost::gil::any_image<my_img_types>>' being compiled [D:\projects\git.sail-benchmark\build\sail-benchmark-gil.vcxproj]
D:\projects\git.vcpkg\installed\x64-windows\include\boost/gil/extension/dynamic_image/any_image.hpp(34): message : see reference to alias template instantiation 'boost::mp11::mp_transform<boost::gil::detail::get_view_t,boost::gil::any_image<my_img_types>>' being compiled [D:\projects\git.sail-benchmark\build\sail-benchmark-gil.vcxproj]
D:\projects\git.vcpkg\installed\x64-windows\include\boost/gil/extension/dynamic_image/any_image.hpp(93): message : see reference to alias template instantiation 'boost::gil::detail::images_get_views_t<boost::gil::any_image<my_img_types>>' being compiled [D:\projects\git.sail-benchmark\build\sail-benchmark-gil.vcxproj]
D:\projects\git.sail-benchmark\src\sail-benchmark-gil.cpp(66): message : see reference to class template instantiation 'boost::gil::any_image<my_img_types>' being compiled [D:\projects\git.sail-benchmark\build\sail-benchmark-gil.vcxproj]

Expected behavior

It compiles.

C++ Minimal Working Example

Environment

• Compiler version: MSVC 2019
• Build settings:
• Version (Git ref or <boost/version.hpp>): 1.77 in vcpkg

[sdebionne]

Indeed, the documentation is not up-to-date. The need for an MPL vector has been removed, the any_image variant should be instantiated directly with:

any_image< gray8_image_t
         , gray16_image_t
         , rgb8_image_t
         , rgba8_image_t > runtime_image;

[HappySeaFox]

Cool, thanks! 😀