option (USE_INTERNAL_LIBXML2_LIBRARY "Set to FALSE to use system libxml2 library instead of bundled" ${NOT_UNBUNDLED}) if (NOT EXISTS "${ClickHouse_SOURCE_DIR}/contrib/libxml2/libxml.h") if (USE_INTERNAL_LIBXML2_LIBRARY) message (WARNING "submodule contrib/libxml2 is missing. to fix try run: \n git submodule update --init --recursive") set (USE_INTERNAL_LIBXML2_LIBRARY 0) endif () set (MISSING_INTERNAL_LIBXML2_LIBRARY 1) endif () if (NOT USE_INTERNAL_LIBXML2_LIBRARY) find_package (LibXml2) #find_library (LIBXML2_LIBRARY libxml2) #find_path (LIBXML2_INCLUDE_DIR NAMES libxml.h PATHS ${LIBXML2_INCLUDE_PATHS}) endif () if (LIBXML2_LIBRARY AND LIBXML2_INCLUDE_DIR) elseif (NOT MISSING_INTERNAL_LIBXML2_LIBRARY) set (LIBXML2_INCLUDE_DIR ${ClickHouse_SOURCE_DIR}/contrib/libxml2/include ${ClickHouse_SOURCE_DIR}/contrib/libxml2-cmake/linux_x86_64/include) set (USE_INTERNAL_LIBXML2_LIBRARY 1) set (LIBXML2_LIBRARY libxml2) endif () message (STATUS "Using libxml2: ${LIBXML2_INCLUDE_DIR} : ${LIBXML2_LIBRARY}")