Question

我正在尝试使用CMake在我的主库中包含共享库。

我使用了本示例Trying to build shared library in CLion/CMake和C++ Link two Shared Library to main.cpp 但它不起作用。我正在获得对所有函数调用的未定义引用。

我的目录树是这样的：

**folder**
| **project folder**
|      | 
|      |_main.cpp
       |_
|      |_CMakeLists.txt
|      |
| **lib**
     |_**lib1**
          |_CMakeLists.txt
          |_liblib1.so
          |_**src**
               |_lib1.cpp
          |_**include**
               |_lib1.h

这是我的项目CMakeLists.txt：

cmake_minimum_required(VERSION 3.14)
project(DAL_project)

set(CMAKE_CXX_STANDARD 17)
set(GCC_COVERAGE_COMPILE_FLAGS "-lpq")
set(GCC_COVERAGE_LINK_FLAGS    "-lpq")

include_directories(/usr/include)
include_directories(-I/home/yaodav/Desktop/git_repo/lib/internal/conn2/include/)
SET(CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} ${GCC_COVERAGE_COMPILE_FLAGS}")
SET(CMAKE_EXE_LINKER_FLAGS  "${CMAKE_EXE_LINKER_FLAGS} ${GCC_COVERAGE_LINK_FLAGS}")
SET(SOURCE_FILES main.cpp  SymbolInfo.cpp SymbolInfo.h SymbolDAL.cpp SymbolDAL.h AppSettingDAL.cpp AppSettingDAL.h AppSetting.cpp AppSetting.h)
add_executable(DAL_project ${SOURCE_FILES} )

我正在尝试将这些行添加到CMakeLists.txt，但无法正常工作：

target_link_libraries(DAL_project conlibcon.so)
add_library(libconnlib SHARED IMPORTED -L../lib/internal/conn1)

Answer 1

project(DAL_project)

set(CMAKE_CXX_STANDARD 17) 
set(GCC_COVERAGE_COMPILE_FLAGS "-lpq") 
set(GCC_COVERAGE_LINK_FLAGS "-lpq")

include_directories(/usr/include) 
include_directories(/home/yaodav/Desktop/git_repo/lib/internal/conn2/include) 
link_directories(/lib/internal/conn1 )
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${GCC_COVERAGE_COMPILE_FLAGS}") 
SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${GCC_COVERAGE_LINK_FLAGS}") 
SET(SOURCE_FILES main.cpp SymbolInfo.cpp SymbolInfo.h SymbolDAL.cpp SymbolDAL.h AppSettingDAL.cpp AppSettingDAL.h AppSetting.cpp AppSetting.h) 
add_executable(DAL_project ${SOURCE_FILES} )
target_link_libraries(DAL_project connlib)

如果这不起作用，请尝试执行此操作 add_library（共享导入LIB_NAME） set_property（TARGET LIB_NAME属性IMPORTED_LOCATION FULL_PATH_TO_LIB）

将库添加到target_link_libraries，并将包含文件添加到include_directories

C ++共享库到main.cpp

1 个答案: