我目前正在尝试编译一个在macOS High Sierra 10.13.4上使用Boost.Filesystem的程序。我也使用gcc 7.3编译,我使用Homebrew手动安装。程序将编译,但在链接
期间抛出以下错误Undefined symbols for architecture x86_64:
"boost::filesystem::path_traits::dispatch(boost::filesystem::directory_entry const&, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >&)", referenced from:
boost::enable_if<boost::filesystem::path_traits::is_pathable<boost::decay<boost::filesystem::directory_entry>::type>, boost::filesystem::path&>::type boost::filesystem::path::operator=<boost::filesystem::directory_entry>(boost::filesystem::directory_entry const&) in world.cc.o
ld: symbol(s) not found for architecture x86_64
collect2: error: ld returned 1 exit status
我正在使用cmake构建,我的CMakeLists.txt文件看起来像这样
cmake_minimum_required (VERSION 3.0)
MESSAGE(STATUS "Compiler: " ${CMAKE_CXX_COMPILER})
# variables for CMAKE
set(PROJECT sealab)
set(BINARY ${PROJECT}.out)
set(SRC_DIR src/)
set(INC_DIR inc/)
FILE(GLOB_RECURSE SRC ${SRC_DIR}/*.cc)
# library include dirs
set(IMGUI_INC libs/imgui/)
set(SPDLOG_INC libs/spdlog/include/)
set(JSON_INC libs/json/include/)
set(
LIB_INC
${IMGUI_INC}
${SPDLOG_INC}
${JSON_INC}
${GLM_INC}
)
# library src files
FILE(GLOB IMGUI_SRC ${IMGUI_INC}*.cpp)
FILE(GLOB SPDLOG_SRC ${SPDLOG_INC}*.cpp)
set(
LIB_SRC
${IMGUI_SRC}
${SPDLOG_SRC}
)
project(${PROJECT})
# version number
set(${PROJECT}_VERSION_MAJOR 0)
set(${PROJECT}_VERSION_MINOR 1)
# Compilation Database
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
# C++ standard
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wno-unused-local-typedefs")
# threads
set(THREADS_PREFER_PTHREAD_FLAG ON)
# adding packages
find_package(OpenGL REQUIRED)
find_package(GLEW REQUIRED)
find_package(glfw3 3.2 REQUIRED)
find_package(Threads REQUIRED)
find_package(Assimp REQUIRED)
find_package(glm REQUIRED)
find_package(Boost COMPONENTS system filesystem REQUIRED)
set(Boost_USE_MULTITHREADED ON)
set(Boost_USE_STATIC_LIBS ON)
set(Boost_USE_STATIC_RUNTIME ON)
# adding directories and source files
include_directories(
${OPENGL_INCLUDE_DIRS}
${GLEW_INCLUDE_DIRS}
${ASSIMP_INCLUDE_DIRS}
${GLM_INCLUDE_DIRS}
${Boost_INCLUDE_DIRS}
)
include_directories(${INC_DIR} ${LIB_INC})
link_directories(${INC_DIR} ${LIB_INC})
# adding source files
add_executable(${BINARY} ${SRC} ${LIB_SRC})
set_target_properties(${BINARY} PROPERTIES COTIRE_UNITY_TARGET_NAME "unity")
# linking libraries
target_link_libraries(
${BINARY}
OpenGL::GL
${GLEW_LIBRARIES}
Threads::Threads
${ASSIMP_LIBRARIES}
glfw
glm
${Boost_LIBRARIES}
)
我使用命令cmake -DCMAKE_C_COMPILER=$CC -DCMAKE_CXX_COMPILER=$CXX .
生成Makefile,环境变量$CC
和$CXX
设置为Homebrew创建的gcc和g ++版本。
我已经查看了其他几个stackoverflow的答案,其中人们有相同的错误,所有这些都是错误链接的结果。我的链接方式与正确的答案相同,但错误仍然存在。我还在错误地链接它还是还有其他东西在这里?