include(FetchContent) FetchContent_Declare(zlib GIT_REPOSITORY "https://github.com/madler/zlib" GIT_TAG "v1.3" ) FetchContent_GetProperties(zlib) if (NOT zlib_POPULATED) FetchContent_Populate(zlib) endif() add_subdirectory("${zlib_SOURCE_DIR}" "${zlib_BINARY_DIR}" EXCLUDE_FROM_ALL) set(ZLIB_LIBRARIES "zlibstatic" PARENT_SCOPE) set(ZLIB_INCLUDE_DIRS "${zlib_SOURCE_DIR}" "${zlib_BINARY_DIR}" PARENT_SCOPE)