CMake自定义构建步骤PRE_LINK/PRE_BUILD不起作用

Question

PRE_LINK和PRE_BUILD似乎不适用于Linux上的CMake(生成MakeFiles).文档说只支持PRE_BUILD.但是,PRE_LINK根本不会受到影响.

我不确定是否理解他们错了或者我错过了什么.

(现在,作为解决方法,我添加了一个假目标和POST_BUILD步骤.然后创建依赖工作.但是,它有自己的问题.对于我的设置,它会在并行make(-j)完成时产生问题.

示例代码:

cmake_minimum_required(VERSION 2.8.5)
project(custom_command_test)

add_custom_target(my_actual_target
    COMMAND echo " I am the actual taget "
    COMMENT "Running actual target"
    )
add_custom_command(
    TARGET my_actual_target
    PRE_LINK
    COMMAND echo "I am prelinked to actual target"
    COMMENT " Running PRELINK action "
    )
add_custom_command(
    TARGET my_actual_target
    PRE_BUILD
    COMMAND echo " I am prebuilt to actual target"
    COMMENT " Running PRE_BUILD action"
    )
add_custom_command(
    TARGET my_actual_target
    POST_BUILD
    COMMAND echo " I postbuild to actual target"
    COMMENT " Running POST BUILD action "
    )

输出:

> cmake .
-- The C compiler identification is GNU 4.4.2
-- The CXX compiler identification is GNU 4.4.2
-- Check for working C compiler: XXXX/gcc/4.4.2/bin/gcc
-- Check for working C compiler: XXXX/gcc/4.4.2/bin/gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: XXXX/gcc/4.4.2/bin/g++
-- Check for working CXX compiler: XXXX/gcc/4.4.2/bin/g++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Configuring done
-- Generating done
-- Build files have been written to: XXXX

 > make my_actual_target
Scanning dependencies of target my_actual_target
[100%] Running actual target
 I am the actual taget 
 Running PRE_BUILD action
 I am prebuilt to actual target
 Running POST BUILD action 
 I postbuild to actual target
[100%] Built target my_actual_target

> cmake --version
cmake version 2.8.10.2

对此有何解决方案？

Answer 1

好像PRE_LINK只适用于“真实”目标，例如库或可执行文件：

add_library(my_actual_target foo.cpp)

add_custom_command(
    TARGET my_actual_target
    PRE_LINK
    COMMAND echo "I am prelinked to actual target"
    COMMENT " Running PRE_LINK action "
    )
add_custom_command(
    TARGET my_actual_target
    PRE_BUILD
    COMMAND echo " I am prebuilt to actual target"
    COMMENT " Running PRE_BUILD action"
    )
add_custom_command(
    TARGET my_actual_target
    POST_BUILD
    COMMAND echo " I postbuild to actual target"
    COMMENT " Running POST_BUILD action "
    )

结果：

Running PRE_BUILD action
...
Running PRE_LINK action
...
Running POST_BUILD action

恕我直言，这是文档问题