micro-logger-cpp

Small header-only C++ logging library using streams. A logger instance can be created from a std::ostream& (a file; cout; etc.) and a tag (e.g. your class' name).

Kept the interface minimalist (e.g. no way to change the formatting for Logger's interface): found it easier to simply update the code to suits the needs of whichever project I'm working on.

Platform Support

• Linux: ✅ Fully supported (native build)
• macOS: ✅ Fully supported (native build)
• Windows: ✅ Supported via cross-compilation from Linux/macOS

Windows Cross-Compilation

micro-logger-cpp can be cross-compiled for Windows using mingw-w64. The library uses C++11 threading features (std::mutex), which requires the POSIX threading model variant of mingw-w64.

Quick Start (Docker):

cd cross-compile
./cross-compile-windows.sh

Test with Wine:

cd cross-compile
./test-windows-with-wine.sh

Output:

• Windows executable: cross-compile/build-windows/micro_logger_sample.exe

Requirements:

• Docker (for containerized cross-compilation)
• OR mingw-w64 with POSIX threading model installed locally

Important: The default mingw-w64 uses the win32 threading model, which does NOT support C++11 threading. You must use the POSIX variant:

# Ubuntu/Debian: Install POSIX variant
apt-get install g++-mingw-w64-x86-64-posix

# Compiler names:
x86_64-w64-mingw32-g++-posix   # ✅ Correct (supports std::mutex)
x86_64-w64-mingw32-g++         # ❌ May not support std::mutex (win32 threading)

For detailed information about the threading model issue and complete investigation notes, see:

• cross-compile/README.md - Build instructions
• WINDOWS_CROSS_COMPILATION_NOTES.md - Technical deep-dive