remove C library in cpp_master branch

[ygj6]

• remove C part files
• rename include/msgpack/.h to include/msgpack/.hpp
• remove C part in source code

Closes: #872

[redboltz]

It seems that some of appveyor builds are failed. Could you fix it?

[ygj6]

In the initial appveyor.yml, when msvc is "Visual Studio 10 2010" or "Visual Studio 11 2012" or "Visual Studio 12 2013", the value of MSGPACK_BOOST is OFF. If it is set to ON, the compilation will fail because Boost cannot be found.
This shows that for the three versions of msvc, Boost is not supported.
So, should I remove these three matrices in this PR?

[redboltz]

Boost said that MSVC 8.0 SP1, MSVC 9.0 and newer are supported.
https://www.boost.org/doc/libs/1_73_0/libs/log/doc/html/log/installation.html

And https://en.wikipedia.org/wiki/Microsoft_Visual_C%2B%2B#Internal_version_numbering said that Visual Studio 10 2010 has MSVC++ 10.

So boost supports Visual Studio 10 2010.

I'm not sure appveyor's image management. It seems that appveyor or cmake's problem.
We need to try to find boost on these environment.
I think that we need only header only libraries except some of examples. Install (just place boost image) manually could be an option.

[redboltz]

Some of examples require (not header only) boost library. But old msvc on appveyor doesn't have built library. So older msvc, disabling examples is acceptable solution.
It is better than removing build from the matrix because tests are built and executed.

Could you update appveyor.yml as follows ?

appveyor.yml

  matrix:
    - cpp11: -DMSGPACK_CXX11=OFF
      example:  -DMSGPACK_BUILD_EXAMPLES=OFF
      msvc: '"Visual Studio 10 2010"'
    - cpp11: -DMSGPACK_CXX11=OFF
      example:  -DMSGPACK_BUILD_EXAMPLES=OFF
      msvc: '"Visual Studio 11 2012"'
    - cpp11: -DMSGPACK_CXX11=OFF
      example:  -DMSGPACK_BUILD_EXAMPLES=OFF
      msvc: '"Visual Studio 12 2013"'
    - cpp11: -DMSGPACK_CXX11=ON
      example:  -DMSGPACK_BUILD_EXAMPLES=ON
      msvc: '"Visual Studio 14 2015"'
    - cpp11: -DMSGPACK_CXX11=OFF
      example:  -DMSGPACK_BUILD_EXAMPLES=ON
      msvc: '"Visual Studio 14 2015"'

- cmake -G %msvc% %cpp11% %example% %x3_parse% -DGTEST_LIBRARY=%APPVEYOR_BUILD_FOLDER%\googletest-release-1.7.0\build\Release\gtest.lib -DGTEST_MAIN_LIBRARY=%APPVEYOR_BUILD_FOLDER%\googletest-release-1.7.0\build\Release\gtest_main.lib -DGTEST_INCLUDE_DIR=%APPVEYOR_BUILD_FOLDER%\googletest-release-1.7.0\include -DZLIB_LIBRARY=%APPVEYOR_BUILD_FOLDER%\zlib-1.2.11\build\Release\zlib.lib -DZLIB_INCLUDE_DIR=%APPVEYOR_BUILD_FOLDER%\zlib-1.2.11 -DCMAKE_CXX_FLAGS='"/D_VARIADIC_MAX=10 /EHsc"' ..

[redboltz]

It seems that the fix solves first 3 appveyor builds but unexpected side effects.
Required more fix...

[redboltz]

It seems that 5906655 have some error on appveyor but I think that your approach (replacing CMakeLists.txt) is good :)
Text processing on Windows is very difficult to me :(

I will wait your update.

[codecov-commenter]

Codecov Report

Merging #876 into cpp_master will increase coverage by 5.29%.
The diff coverage is n/a.

@@              Coverage Diff               @@
##           cpp_master     #876      +/-   ##
==============================================
+ Coverage       81.16%   86.46%   +5.29%     
==============================================
  Files              86       71      -15     
  Lines            6419     5053    -1366     
==============================================
- Hits             5210     4369     -841     
+ Misses           1209      684     -525     

[redboltz]

Thank you for updating !