cmake安装项目不会将我的可执行文件复制到我指定的文件夹 [英] cmake install project doesn't copy my executable to the folder I specify

问题描述

刚刚开始与Cmake。我已经成功设置了最小的hello world C ++应用程序可能的VS2012在Win7，但我有一个最后叨叨的东西，不是很对，我不明白为什么：（

我的文件夹结构是：

  [cmakeTest] 
  -  [build] 
  - [source] 
  -  [helloWorld] 
  -  main.cpp 
  -  CMakeLists.txt 
  -  CMakeLists.txt 
  

我的main.cpp文件只是：

  #include< iostream> 
 
 int main（）
 {
 std :: cout<<Hello World！; 
} 
  

source / CMakeLists.txt is：

  cmake_minimum_required（VERSION 3.0.1）
 
＃指定VS解决方案的项目名称
＃VS项目将为每个指定的CMake目标创建
 
项目（cmakeTesting ）
 
＃设置安装目录
 set（CMAKE_INSTALL_PREFIX $ {cmakeTesting_BINARY_DIR} / bin）
 
＃生成管理器项目
＃创建CMakePredefinedTargets文件夹与INSTALL和ZERO_CHECK 
 
 set_property（GLOBAL PROPERTY USE_FOLDERS ON）
 
＃从子目录中排队CMakeLists 
 
 add_subdirectory（helloWorld）
  
 
 
 
 source / helloWorld / CMakeLists.txt is：
 ＃设置属性 - >通用 - >配置类型到应用程序（.exe）
＃使用列出的源（main.cxx）创建helloWorld.exe 
＃添加源到解决方案资源管理器
 
 add_executable（helloWorld main.cpp）
 
＃创建一个名为executables的文件夹，并添加目标
＃project（helloWorld.vcproj） it 
 
 set_property（TARGET helloWorld PROPERTY FOLDERexecutables）
 
＃将逻辑添加到INSTALL.vcproj以将helloWorld.exe复制到dest dir 
 
 install（TARGETS helloWorld RUNTIME DESTINATION $ {PROJECT_BINARY_BIN} / bin）
  
 
 
 
 
 
 
它在构建目录中创建VS解决方案/项目内容
 
 
 
 
 
 
 
 
它会在/ build / helloWorld / Debug /和/ build / helloWorld / Release中创建exe文件）
 
 
 
 
 
 
无效：
 
 
 
 
 
 VS说它已经将exe复制到/bin/helloWorld.exe但它没有>： - （
 
 
 
 
 
 1> ------构建开始：项目：ZERO_CHECK，配置：发布Win32 ------ 
 
 
 
 2> ------ Build started：项目：ALL_BUILD，配置：发布Win32 ------ 
 
 
 
 2>构建所有项目
 
 
 
 3> ------构建开始：项目：INSTALL，配置：发布Win32 ------ 
 
 
 
 3>  - 安装配置：释放
 
 
 
 3>  - 更新：/bin/helloWorld.exe 
 
 
 
 ========== Build：3成功，0失败，1个最新，0个跳过========= = 
 
 
 
。
 
 
 
我知道这似乎很讨厌，但我想确保我明白继续前进到更复杂的东西（PS我使用的是cmake客户端而不是命令行。）
解决方案
这可能只是一个错字。在source / helloWorld / CMakeLists.txt的最后一行我想你的意思是 PROJECT_BINARY_DIR ，而不是 PROJECT_BINARY_BIN ？
 
 
 
这里发生的是， $ {PROJECT_BINARY_BIN} / bin 解析为 / bin （在CMake中取消引用未定义的字符串不幸地不会生成警告）， / bin 是一个绝对路径。如果你的项目是在C：驱动器，我希望你会发现C：\bin\helloWorld.exe实际上 存在：VS没有说谎： - ） / p> 
 
 
同样，通常在 install 命令中指定相对路径以允许用户选择安装根。同样，硬编码 CMAKE_INSTALL_PREFIX （至少没有警告）也不是真正用户友好的。
 
 
 
这种情况下，我会将 install 命令更改为：
 安装（TARGETS helloWorld RUNTIME DESTINATION bin）
  
并删除 set（CMAKE_INSTALL_PREFIX ... ）
 
 
 
说你的项目的根目录是C：\myProject，然后从VS命令提示符，你可以do：
  cd C：\myProject\build 
 cmake -DCMAKE_INSTALL_PREFIX = C：\myProject\build..\source 
 cmake --build。 --config Release --target INSTALL 
 bin\helloWorld.exe 
  
 
Just starting out with Cmake.  I've successfully setup the most minimal hello world C++ app possible for VS2012 on Win7 but I've got one last nagging thing that's not quite right and I can't figure out why :(

My folder structure is:
[cmakeTest]
- [build]
- [source]
  - [helloWorld]
    - main.cpp
    - CMakeLists.txt
  - CMakeLists.txt
My main.cpp file is just:
#include <iostream>

int main()
{
    std::cout << "Hello World!";
}
source/CMakeLists.txt is:
cmake_minimum_required (VERSION 3.0.1)

# Specifies project name for VS solution
# VS projects will be made for each CMake target specified

project(cmakeTesting)

# set the install directory
set(CMAKE_INSTALL_PREFIX ${cmakeTesting_BINARY_DIR}/bin)

# Generate organiser projects
# Creates "CMakePredefinedTargets" folder with INSTALL and ZERO_CHECK

set_property(GLOBAL PROPERTY USE_FOLDERS ON)

# Queue up CMakeLists from subdirectories

add_subdirectory(helloWorld)
source/helloWorld/CMakeLists.txt is:
# Set Properties->General->Configuration Type to Application (.exe)
# Creates helloWorld.exe with the listed sources (main.cxx)
# Adds sources to the Solution Explorer

add_executable (helloWorld main.cpp)

# Creates a folder called "executables" and adds target
# project (helloWorld.vcproj) under it

set_property(TARGET helloWorld PROPERTY FOLDER "executables")

# Adds logic to INSTALL.vcproj to copy helloWorld.exe to dest dir

install (TARGETS helloWorld RUNTIME DESTINATION ${PROJECT_BINARY_BIN}/bin)
What does work: 


It creates the VS solution/project stuff in the build directory
The project builds and runs in debug and release mode
It creates exe's in /build/helloWorld/Debug/ and /build/helloWorld/Release (which work)


What doesn't work: 


VS says it has copied the exe to /bin/helloWorld.exe but it hasn't >:-(


.

1>------ Build started: Project: ZERO_CHECK, Configuration: Release Win32 ------

2>------ Build started: Project: ALL_BUILD, Configuration: Release Win32 ------

2>  Build all projects

3>------ Build started: Project: INSTALL, Configuration: Release Win32 ------

3>  -- Install configuration: "Release"

3>  -- Up-to-date: /bin/helloWorld.exe

========== Build: 3 succeeded, 0 failed, 1 up-to-date, 0 skipped ==========

.

I know it seems fussy, but I'm trying to make sure I understand everything that's going on before steamrolling into more complex stuff (P.S. I'm using the cmake client not command line).
解决方案
This probably just boils down to being a typo.  In the last line of source/helloWorld/CMakeLists.txt I guess you meant PROJECT_BINARY_DIR rather than PROJECT_BINARY_BIN?

What's happening here is that ${PROJECT_BINARY_BIN}/bin resolves to /bin (dereferencing an undefined string in CMake unfortunately doesn't generate a warning) and /bin is an absolute path.  If your project is in the C: drive, I expect you'll find that C:\bin\helloWorld.exe actually does exist: VS hasn't been lying to you :-)

Just as an aside, it's usual to specify relative paths in the install command to allow the user to select the install root.  Likewise, it's not really user-friendly to hard code the CMAKE_INSTALL_PREFIX (at least without a warning).

In this case, I'd change the install command to:
install (TARGETS helloWorld RUNTIME DESTINATION bin)
and remove set(CMAKE_INSTALL_PREFIX ...) from source/CMakeLists.txt.

Say your project's root is C:\myProject, then from a VS command prompt, you can do:
cd C:\myProject\build
cmake -DCMAKE_INSTALL_PREFIX="C:\myProject\build" ..\source
cmake --build . --config Release --target INSTALL
bin\helloWorld.exe


                        
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