决定在CMakeLists.txt中写入什么 - 主要在子文件夹中

时间:2013-01-08 03:08:38

标签: c++ cmake

我有一个使用CMake和gtest的简单项目。我有一个基本的CMakeLists.txt文件,但我希望更好地了解如何使用多个CMakeLists.txt并连接它们。到目前为止,该项目的代码是这样的:

https://github.com/dmonopoly/writeart/tree/10b62048e6eb6a6ddd0658123d85ce4f5f601178

为了更快地参考,我利用的唯一一个CMakeLists.txt文件(在项目根目录中)有这个内容:

cmake_minimum_required(VERSION 2.8)

# Options
option(TEST "Build all tests." OFF) # makes boolean 'TEST' available

# Make PROJECT_SOURCE_DIR, PROJECT_BINARY_DIR, and PROJECT_NAME available
set(PROJECT_NAME MyProject)
project(${PROJECT_NAME})

set(CMAKE_CXX_FLAGS "-g") # -Wall")

#set(COMMON_INCLUDES ${PROJECT_SOURCE_DIR}/include) if you want your own include/ directory
# then you can do include_directories(${COMMON_INCLUDES}) in other cmakelists.txt files

################################
# Normal Libraries & Executables
################################
add_library(standard_lib Standard.cpp Standard.h)
add_library(converter_lib Converter.cpp Converter.h)
add_executable(main Main.cpp)

target_link_libraries(main standard_lib converter_lib)

################################
# Testing
################################
if (TEST)
    # This adds another subdirectory, which has project(gtest)
    add_subdirectory(lib/gtest-1.6.0)

    enable_testing()

    # Include the gtest library
    # gtest_SOURCE_DIR is available due to project(gtest) above
    include_directories(${gtest_SOURCE_DIR}/include ${gtest_SOURCE_DIR})

    ##############
    # Unit Tests
    ##############
    # Naming
    set(UNIT_TESTS runUnitTests)

    add_executable(${UNIT_TESTS} ConverterTest.cpp)

    # standard linking to gtest stuff
    target_link_libraries(${UNIT_TESTS} gtest gtest_main)

    # extra linking for the project
    target_link_libraries(${UNIT_TESTS} standard_lib converter_lib)

    # This is so you can do 'make test' to see all your tests run, instead of manually running the executable runUnitTests to see those specific tests.
    add_test(NAME myUnitTests COMMAND runUnitTests)
endif()

我的目标是将Standard.cpp和Standard.h移动到lib /.但是,当我这样做的时候,我发现我在CMakeLists.txt中所做的事情的顺序很复杂。我需要用于我的gtest设置的库,但是库必须在lib / CMakeLists.txt中制作,对吧?找到所有库和可执行文件的位置并不是很容易变得非常复杂,因为你必须查看所有的CMakeLists.txt吗?

如果我在概念上遗漏了某些东西,或者如果有一个很好的例子我可以用来轻松解决这个问题,那就太好了。

帮助表示感谢,并提前感谢。

1 个答案:

答案 0 :(得分:1)

如果您不想使用多个CMakeLists.txt文件,请不要。

################################
# Normal Libraries & Executables
################################

add_library(standard_lib lib/Standard.cpp lib/Standard.h)
add_library(converter_lib lib/Converter.cpp lib/Converter.h)

# Main.cpp needs to know where "Standard.h" is for the #include, 
#   so we tell it to search this directory too. 
include_directories(lib)

如果您确实需要多个CMakeLists.txt,请将其移出:

# Main CMakeLists.txt:
add_subdirectory(lib)

include_directories (${standard_lib_SOURCE_DIR}/standard_lib) 

link_directories (${standard_lib_BINARY_DIR}/standard_lib) 

/lib/CMakeLists.txt

add_library (standard_lib Standard.cpp)

这是an example