#FetchContent_Declare(gflags # SOURCE_DIR ${LIB_BASE_DIR}/gflags-src) #FetchContent_MakeAvailable(gflags) # #include_directories(${gflags_BINARY_DIR}/include) set(GFLAGS_ROOT_DIR ${LIB_BASE_DIR}/gflags-src) find_package(gflags REQUIRED CONFIG HINTS ${GFLAGS_ROOT_DIR}) set(GFLAGS_INCLUDE_DIR ${LIB_BASE_DIR}/gflags-build/include) list(APPEND third_party_libraries gflags)