Cannot find source file: `api.rst`

[seanmiddleditch]

On the very latest on master (e3910b8a9cdb8ab81979af39357eedd5deb94941) I get this error generating the CMake projects on Windows/MSVC:

1> [CMake] -- CMake version: 3.28.3-msvc11
1> [CMake] -- {fmt} version: 10.2.2
1> [CMake] -- Build type: Debug
1> [CMake] -- FMT_PEDANTIC: OFF
1> [CMake] -- Configuring done (0.5s)
1> [CMake] CMake Error at doc/CMakeLists.txt:18 (add_custom_target):
1> [CMake]   Cannot find source file:
1> [CMake] 
1> [CMake]     api.rst

I have Doxygen installed, so it looks like the project is trying to build the docs in doc/, which appears to not be the case in GitHub Actions (https://github.com/fmtlib/fmt/actions/runs/9331997765/job/25687295919) which might explain why the builds are passing CI?

There's a doc/api.md file but no doc/api.rst file in the repository, and I don't see any scripts or build steps that would generate a .rst version, though I do see a few various references to .rst files and not the .md files.

I'm guessing this broke as of https://github.com/fmtlib/fmt/commit/19927462497c249d8aa01293da0e1aacace51686

[vitaut]

The documentation is being migrated to mkdocs. The doc target itself is fixed in https://github.com/fmtlib/fmt/commit/250456d5a3a892fa53c31c659cfe0d39f303e114 although the migration is still in progress.