Question

在下面的示例中，有两个cmake子文件夹：一个生成文件file1.txt，第二个生成file2.txt。第二个命令取决于第一个。

|-- generator
    |-- CMakeLists.txt -> file1.txt
|-- producer
    |-- CMakeLists.txt -> file2.txt (depends on file1.txt)

发电机：

add_custom_command(
    OUTPUT "${PROJECT_SOURCE_DIR}/file1.txt"
    COMMAND ${CMAKE_COMMAND} -E touch "${PROJECT_SOURCE_DIR}/file1.txt"
    COMMENT "Generate first file"
)

生产者：

add_custom_command(
    OUTPUT "${PROJECT_SOURCE_DIR}/file2.txt"
    COMMAND ${CMAKE_COMMAND} -E touch "${PROJECT_SOURCE_DIR}/file2.txt"
    DEPENDS "${PROJECT_SOURCE_DIR}/file1.txt"
    COMMENT "Generate second file"
)
add_custom_target(mytarget DEPENDS "${PROJECT_SOURCE_DIR}/file2.txt")

如果单个CMakeLists.txt文件的两个命令都在同一作用域中，则没有问题。但是我想通过生成的文件连接来自不同作用域的两个命令。

$ cmake .. && make mytarget

Scanning dependencies of target mytarget
make[3]: *** No rule to make target '../file1.txt', needed by '../file2.txt'.  Stop.
CMakeFiles/Makefile2:103: recipe for target 'producer/CMakeFiles/mytarget.dir/all' failed
make[2]: *** [producer/CMakeFiles/mytarget.dir/all] Error 2
CMakeFiles/Makefile2:110: recipe for target 'producer/CMakeFiles/mytarget.dir/rule' failed
make[1]: *** [producer/CMakeFiles/mytarget.dir/rule] Error 2
Makefile:118: recipe for target 'mytarget' failed
make: *** [mytarget] Error 2

CMake的add_custom_command取决于生成的文件

0 个答案: