Windows containers failing to build

[patrick-stephens]

Windows 2019 failed here https://github.com/fluent/fluent-bit/actions/runs/14178178470/job/39718022548#step:5:2710 because that plugin uses flb_plg_trace which in turn uses FLB_FILENAME which apparently is not defined in this environment.

@leonardo-albertovich thinks the root cause of it is we're adding the definition in the global CMakeLists.txt file here using the gcc/clang compatible command line flag unconditionally instad of doing it in the previous conditional where we could use /D__FLB_FILENAME__=FILE for msvc and -D__FLB_FILENAME__=FILE for the rest.

[mabrarov]

Hi @patrick-stephens,

By some reason when using NMake Makefiles CMake generator (I can be wrong, but I feel it was documentation recommended way of building Fluent Bit on Windows 1-2 years ago), then this issue doesn't happen. Refer to #10180.

IMHO, Fluent Bit CMake project (including its sub-projects) can be not ready for CMake multi-configuration generators (as opposite to single-configuration generators). Such CMake generators require usage of CMake generator expressions - refer to https://cmake.org/cmake/help/latest/manual/cmake-buildsystem.7.html#build-configurations.

Thank you.