­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ ­ The config.h file was removed from XZ-Utils starting with version 5.5.0. XZ-Utils switched to CMake and removed Visual Studio project files and pre-generated headers/sources. We include the following files from XZ 5.4.7 to maintain compatibility with Python's MSBuild-based build system on Windows (PCbuild/liblzma.vcxproj): - config.h (src/common/config.h) - crc32_table.c (src/liblzma/check/crc32_table.c) - crc64_table.c (src/liblzma/check/crc64_table.c) These files are copied into the extracted XZ source directory during the Windows build process if they are missing.