项目 A 依赖共享库 B，B 依赖 C，A 不依赖 C。当我使用 B 的 API 时，警告 B 找不到 C

Project A rely on shared library B, B rely on C, A don't rely on C. When I use an API of B, warning B can't find C

本文关键字：依赖 API 找不到 警告 共享 项目      更新时间：2023-10-16

一个项目A依赖于共享库B，B依赖于C，A不依赖于C。B作为共享库进行编译和安装。当A使用B的 API 时，会出现一条警告，B找不到C，如代码所示。

在该代码中，ALibTest。BTdLib.Cpangolin.

Scanning dependencies of target LibTest
[ 50%] Building CXX object CMakeFiles/LibTest.dir/main.cpp.o
[100%] Linking CXX executable LibTest
/usr/bin/ld: warning: libpangolin.so, needed by /home/wang/CLionProjects/TdLibrary/install/lib/libTdLib.so, not found (try using -rpath or -rpath-link)
/home/wang/CLionProjects/TdLibrary/install/lib/libTdLib.so: 'pangolin::CreateDisplay()’ undefined reference
...
collect2: error: ld returned 1 exit status
CMakeFiles/LibTest.dir/build.make:84: recipe for target 'LibTest' failed
make[3]: *** [LibTest] Error 1
CMakeFiles/Makefile2:109: recipe for target 'CMakeFiles/LibTest.dir/all' failed
make[2]: *** [CMakeFiles/LibTest.dir/all] Error 2
CMakeFiles/Makefile2:121: recipe for target 'CMakeFiles/LibTest.dir/rule' failed
make[1]: *** [CMakeFiles/LibTest.dir/rule] Error 2
Makefile:131: recipe for target 'LibTest' failed
make: *** [LibTest] Error 2

共享图书馆BCMakelist.txt.

add_library(TdLib SHARED
pangolin_tools.cpp
pangolin_tools.h
)
#pangolin
find_package(Pangolin REQUIRED)
include_directories(${Pangolin_INCLUDE_DIRS} )
set(HEADER_FILES
pangolin_tools.h
)
set_target_properties(TdLib PROPERTIES
PUBLIC_HEADER
"${HEADER_FILES}"
)
target_link_libraries(TdLib PRIVATE
${Pangolin_LIBRARIES}
)
install(TARGETS TdLib
# IMPORTANT: Add the foo library to the "export-set"
EXPORT ${PROJECT_NAME}Targets
RUNTIME DESTINATION "${INSTALL_BIN_DIR}" COMPONENT bin
LIBRARY DESTINATION "${INSTALL_LIB_DIR}" COMPONENT shlib
PUBLIC_HEADER DESTINATION "${INSTALL_INCLUDE_DIR}/TdLibrary"
COMPONENT dev)

我安装B

cmake .. -DCMAKE_INSTALL_PREFIX:=/home/wang/CLionProjects/TdLibrary/install
make
make install

项目ACMakelist.txt.

cmake_minimum_required(VERSION 3.9)
project(LibTest)
set(CMAKE_CXX_STANDARD 11)
#TdLib
set(TdLib_DIR "/home/wang/CLionProjects/TdLibrary/install/lib/CMake/TdLib/")
find_package(TdLib REQUIRED)
include_directories(${TdLib_INCLUDE_DIRS})
add_executable(LibTest main.cpp)
target_link_libraries(LibTest ${TdLib_LIBRARIES}

您肯定是链接到共享库。

在下文中，我将删除PRIVATE关键字：

target_link_libraries(TdLib PRIVATE
${Pangolin_LIBRARIES}
)

看看这是否有帮助。就我而言，我注意到您可以在没有任何target_link_libraries()的情况下链接库，然后在构建可执行文件时强制您添加库。

我也猜这个PRIVATE关键字可能并不完全符合您的想法。

相关文章：