CMake构建库而无需依赖target_link_libraries在这种情况下为wxWidgets

编程问答 2022-08-15

问题描述

下面是一个有效的CMakeLists.txt，该应用程序仅显示一个wxWidget框架。 如果target_link_libraries被删除，它将无法生成。

cmake_minimum_required(VERSION 3.5)

project(TestCMake LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_required ON)

add_deFinitions(-DBOOST_ASIO_disABLE_CONCEPTS)

set(CMAKE_DEBUG_POSTFIX "-d")
set(CMAKE_INSTALL_PREFIX "/usr/local")

find_package(wxWidgets required core base)
include(${wxWidgets_USE_FILE})
include_directories(.
                    ..
                    ${wxWidgets_INCLUDE_Dirs})

file(GLOB_RECURSE header_files *.h)
file(GLOB_RECURSE source_files *.cpp)

add_executable(TestCMake ${header_files} ${source_files})
target_link_libraries(TestCMake ${wxWidgets_LIBRARIES})

现在更改最后两行，如下所示。 没有target_link_libraries，但是可以成功构建，为什么？

cmake_minimum_required(VERSION 3.5)

project(TestCMake LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_required ON)

add_deFinitions(-DBOOST_ASIO_disABLE_CONCEPTS)

set(CMAKE_DEBUG_POSTFIX "-d")
set(CMAKE_INSTALL_PREFIX "/usr/local")

find_package(wxWidgets required core base)
include(${wxWidgets_USE_FILE})
include_directories(.
                    ..
                    ${wxWidgets_INCLUDE_Dirs})

file(GLOB_RECURSE header_files *.h)
file(GLOB_RECURSE source_files *.cpp)

add_library(TestCMake ${header_files} ${source_files})

解决方法

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buildbuildcmakewxwidgets