Build fails on macOS with deployment target < 13.3 due to std::format using unavailable std::to_chars

[starxg]

faker-cxx fails to build on macOS when the deployment target is set below macOS 13.3.

The project uses std::format, which instantiates libc++ floating-point formatting code. On Apple libc++, floating-point overloads of std::to_chars are marked as unavailable before macOS 13.3, so the build fails when using a lower deployment target such as macOS 11.0.

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• OS: macOS
• Architecture: arm64
• Compiler: Apple Clang / libc++
• C++ standard: C++20
• Package manager: vcpkg
• Library version: faker-cxx v4.3.2
• Deployment target: macOS 11.0

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vcpkg triplet:

set(VCPKG_TARGET_ARCHITECTURE arm64)
set(VCPKG_CRT_LINKAGE dynamic)
set(VCPKG_LIBRARY_LINKAGE dynamic)

set(VCPKG_CMAKE_SYSTEM_NAME Darwin)
set(VCPKG_OSX_ARCHITECTURES arm64)

set(CMAKE_OSX_DEPLOYMENT_TARGET 11.0)
set(VCPKG_OSX_DEPLOYMENT_TARGET 11.0)