New port for mailio.

[karastojko]

Describe the pull request

• What does your PR fix?
  Fixes [New Port Request] <mailio> #16695

• Which triplets are supported/not supported? Have you updated the CI baseline?
  MSVC, Gcc, Clang are supported on Linux, MacOS, Windows.

• Does your PR follow the maintainer guide?
  Yes

[autoantwort]

You have to format your vcpkg.json file with ./vcpkg format-manifest ports/mailio/vcpkg.json. If you have committed this, you have to run ./vcpkg x-add-version mailio

[JackBoosY]

1. Please run ./vcpkg format-manifest --all first,
2. then run ./vcpkg x-add-version --all and commit changes.

[JackBoosY]

Starting package 263/274: mailio:x64-windows-static
Building package mailio[core]:x64-windows-static...
-- Downloading https://github.com/karastojko/mailio/archive/1872f29d88a52f06cd96b611673b2e46c6b9832b.tar.gz -> karastojko-mailio-1872f29d88a52f06cd96b611673b2e46c6b9832b.tar.gz...
-- Extracting source D:/downloads/karastojko-mailio-1872f29d88a52f06cd96b611673b2e46c6b9832b.tar.gz
-- Using source at D:/buildtrees/mailio/src/46c6b9832b-9aa8aa669f.clean
-- Configuring x64-windows-static
-- Building x64-windows-static-dbg
-- Building x64-windows-static-rel
-- Installing: D:/packages/mailio_x64-windows-static/share/mailio/copyright
-- Performing post-build validation
DLLs should not be present in a static build, but the following DLLs were found:

    D:/packages/mailio_x64-windows-static/bin/mailio.dll
    D:/packages/mailio_x64-windows-static/debug/bin/mailio.dll

It seems that BUILD_SHARED_LIBS is not used in the internal cmake code.

[JackBoosY]

I will help you to solve it tomorrow.

[ras0219-msft]

LGTM once the version is changed to 0.20.0. Note that you will need to undo the changes to versions/ (git checkout upstream/master -- versions) and re-run vcpkg x-add-version mailio.

[karastojko]

Tag renamed to 0.20.0 to follow the convention.

[ras0219-msft]

Awesome, thanks for the great library and PR :)

[autoantwort]

This port is failing in the pipeline for windows uwp, as you can see here

[kotori2]

Any idea on how to link this library? Simply use target_link_libraries(${PROJECT_NAME} mailio) won't work and find_package won't work as well...

[karastojko]

Any idea on how to link this library? Simply use target_link_libraries(${PROJECT_NAME} mailio) won't work and find_package won't work as well...

@kotori2
This works for me:

include_directories(${CMAKE_SOURCE_DIR}/libs/mailio/include)
find_library(MAILIO_LIB mailio HINTS ${CMAKE_SOURCE_DIR}/libs/mailio/build)
add_executable(${PROJ} ${PROJSRC} ${PROJINC})
target_link_libraries(${PROJ} ${Boost_LIBRARIES} Threads::Threads ${OPENSSL_LIBRARIES} ${MAILIO_LIB})

where PROJ, PROJSRC, PROJINC is another project that uses mailio.