Cmake 使用GRAPHVIZ_custom_targets=TRUE为自定义目标生成依赖关系图

（使用底部的工作解决方案进行更新）

据我所知，到目前为止，支持使用自定义目标生成依赖关系图。但是，当尝试这样做时，我的目标之间没有依赖关系映射，我得到以下警告：

CMake Warning:
  Manually-specified variables were not used by the project:

    GRAPHVIZ_CUSTOM_TARGETS

我偶然发现了这个答案，但没有多大帮助。我能找到的下一个最接近的东西是支持一些不同用例的不完整代码

我在Windows上运行这个，但我不知道这是否是问题所在

所以，我被难住了，在我对KitWare提起诉讼之前，我需要一些帮助。。。因为我觉得我错过了一些非常明显的东西。任何帮助都将不胜感激

CMakeLists.txt

cmake_minimum_required(VERSION 3.18)

project(
    gviz 
    LANGUAGES NONE
)
add_custom_command(
    OUTPUT foo.txt
    COMMAND cmake --version > foo.txt
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
)

add_custom_command(
    OUTPUT bar.txt
    COMMAND cmake --version > bar.txt
    DEPENDS foo.txt
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
)


add_custom_target(
    foo
    DEPENDS foo.txt
)

add_custom_target(
    bar
    DEPENDS bar.txt
)

命令从控制台运行，并输出：

控制台输出：

cmake_graphviz> cmake --graphviz=group.dot -BNBuild -GNinja . -DGRAPHVIZ_CUSTOM_TARGETS=TRUE
-- Configuring done
-- Generating done
Generate graphviz: cmake_graphviz/group.dot
CMake Warning:
  Manually-specified variables were not used by the project:

    GRAPHVIZ_CUSTOM_TARGETS


-- Build files have been written to: cmake_graphviz/NBuild

最后是

group.dot

文件：

digraph "gviz" {
node [
  fontsize = "12"
];
subgraph clusterLegend {
  label = "Legend";
  color = black;
  edge [ style = invis ];
  legendNode0 [ label = "Executable", shape = egg ];
  legendNode1 [ label = "Static Library", shape = octagon ];
  legendNode2 [ label = "Shared Library", shape = doubleoctagon ];
  legendNode3 [ label = "Module Library", shape = tripleoctagon ];
  legendNode4 [ label = "Interface Library", shape = pentagon ];
  legendNode5 [ label = "Object Library", shape = hexagon ];
  legendNode6 [ label = "Unknown Library", shape = septagon ];
  legendNode7 [ label = "Custom Target", shape = box ];
  legendNode0 -> legendNode1 [ style = solid ];
  legendNode0 -> legendNode2 [ style = solid ];
  legendNode0 -> legendNode3;
  legendNode1 -> legendNode4 [ label = "Interface", style = dashed ];
  legendNode2 -> legendNode5 [ label = "Private", style = dotted ];
  legendNode3 -> legendNode6 [ style = solid ];
  legendNode0 -> legendNode7;
}
}

工作解决方案：

CMakeLists.txt

：

cmake_minimum_required(VERSION 3.18)

project(
    gviz 
    LANGUAGES NONE
)

# Because I don't like cmake files flooding my root directory
file(COPY cmake/CMakeGraphVizOptions.cmake DESTINATION ${CMAKE_BINARY_DIR})

add_custom_command(
    OUTPUT foo.txt
    COMMAND cmake --version > foo.txt
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
)

add_custom_command(
    OUTPUT bar.txt
    COMMAND cmake --version > bar.txt
    DEPENDS foo.txt
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
)


add_custom_target(
    foo
    DEPENDS foo.txt
)

add_custom_target(bar)

add_dependencies(bar foo)

cmake/CMakeGraphVizOptions.cmake

# This file sets some options to control GraphViz graphs.
set(GRAPHVIZ_GRAPH_NAME "MyGraph")
set(GRAPHVIZ_CUSTOM_TARGETS TRUE)
set(GRAPHVIZ_NODE_PREFIX "blah")

文件列表输出：

group.dot
group.dot.bar
group.dot.foo
group.dot.bar.dependers
group.dot.bar.dependers

现在，我唯一的问题是，它似乎没有通过文件输出链接依赖项，但这超出了这个问题的范围：）

在链接中，它声明：

生成的图形的外观和内容可以使用文件

CMakeGraphVizOptions.cmake

进行控制。首先在

CMAKE\u BINARY\u DIR

中搜索此文件，然后在

CMAKE\u SOURCE\u DIR

中搜索。如果找到，其中设置的变量将用于调整生成的Graphviz文件的选项

因此，不要在

cmake

命令行中设置

GRAPHVIZ\u CUSTOM\u目标，而是将其设置在名为
CMakeGraphVizOptions.cmake
的文件中，并将此文件添加到顶级源代码目录中

示例
CMakeGraphVizOptions.cmake
：

# This file sets some options to control GraphViz graphs.
set(GRAPHVIZ_GRAPH_NAME "MyGraph")
set(GRAPHVIZ_CUSTOM_TARGETS TRUE)

非常感谢。不幸的是，图表中缺少的“链接”可能是由于链接的Kitware合并请求的未完成状态。听起来要完成这个定制的目标图形功能还有很多工作要做。