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如何在生成之前在cmake中执行命令？

[英]How to execute a command in cmake before generation?

 原文  2017-04-13 21:03:16  7   1    c++/ c/ makefile/ cmake

问题描述

我希望CMake在开始生成过程之前先运行命令。

因此，我在* CMakeLists.txt的开始处添加了execute_process ，但是预期的提示只是偶尔出现的。 

cmake_minimum_required(VERSION 3.5)

project(amba_ctrl_datalinkmsg)

execute_process(COMMAND @echo 'HUHU HUHU HUHU')
execute_process(COMMAND pwd)
execute_process(COMMAND make -C ${CMAKE_CURRENT_SOURCE_DIR}/msg -f Makefile)

include_directories(include)
add_library(
    ${PROJECT_NAME} STATIC
    "src/source.cpp"
)

有任何想法吗？

为什么要这样做：

我需要从一些简单的定义文件中生成一个Cpp类。

  1. 检查生成器或定义文件的源是否比生成的类文件新
  2. 如果需要，生成发电机
  3. 生成源文件
  4. 建立一个静态库

我已经用一个简单的Makefile解决了点1至3。 4.用CMakeList.txt完成，因为该库在较大的项目中包含一个子项目。

从上面的输出到CMakeList.txt ，没有我的echo ： 

Process package 'amba_ctrl_datalinkmsg' with context:
--------------------------------------------------------------------------------
 source_space => /home/.../src/amba_ctrl/amba_ctrl_datalinkmsg
  build_space => /home/.../build/amba_ctrl_datalinkmsg
install_space => /home/.../install
   make_flags => -j8, -l8
  build_tests => False
--------------------------------------------------------------------------------
+++ Building 'amba_ctrl_datalinkmsg'
==> '. /home/.../build/amba_ctrl_datalinkmsg/cmake__build.sh && /usr/bin/make cmake_check_build_system' in '/home/.../build/amba_ctrl_datalinkmsg'
==> '. /home/.../build/amba_ctrl_datalinkmsg/cmake__build.sh && /usr/bin/make -j8 -l8' in '/home/.../build/amba_ctrl_datalinkmsg'
make[2]: *** No rule to make target '/home/.../src/source.cpp', needed by 'CMakeFiles/amba_ctrl_datalinkmsg.dir/src/source.cpp.o'. Stop.
CMakeFiles/Makefile2:99: recipe for target 'CMakeFiles/amba_ctrl_datalinkmsg.dir/all' failed
make[1]: *** [CMakeFiles/amba_ctrl_datalinkmsg.dir/all] Error 2
Makefile:127: recipe for target 'all' failed
make: *** [all] Error 2

如果正确调用了makefile，则cmake可以找到source.cpp 。 但是没有调用就没有源和头...

调用msgGen之前的树 

.
├── CMakeLists.txt
├── msg
│   ├── def1.msg
│   ├── def2.msg
│   ├── def3.msg
│   ├── Makefile
│   └── msgGen.cpp
├── package.xml
└── README.md

调用msgGen之后的树 

.
├── CMakeLists.txt
├── include
│   └── source.h
├── msg
│   ├── def1.msg
│   ├── def2.msg
│   ├── def3.msg
│   ├── Makefile
│   ├── msgGen
│   └── msgGen.cpp
├── package.xml
├── README.md
└── src
    └── source.cpp

添加RESULT_VARIABLE 

alex:overlay_ws$ ament build --only-packages amba_ctrl_datalinkmsg
# Topological order
 - amba_ctrl_datalinkmsg

Process package 'amba_ctrl_datalinkmsg' with context:
--------------------------------------------------------------------------------
 source_space => /home/.../src/amba_ctrl/amba_ctrl_datalinkmsg
  build_space => /home/.../build/amba_ctrl_datalinkmsg
install_space => /home/.../install
   make_flags => -j8, -l8
  build_tests => False
--------------------------------------------------------------------------------
+++ Building 'amba_ctrl_datalinkmsg'
==> '. /home/.../build/amba_ctrl_datalinkmsg/cmake__build.sh && /usr/bin/make cmake_check_build_system' in '/home/.../build/amba_ctrl_datalinkmsg'
make[1]: Entering directory '/home/.../src/amba_ctrl/amba_ctrl_datalinkmsg/msg'
make gen
make[2]: Entering directory '/home/.../src/amba_ctrl/amba_ctrl_datalinkmsg/msg'
msgGen: build msgGen
g++ msgGen.cpp -o msgGen --std=c++11 -D'GENTARGETCPP="../src/source.cpp"' -D'GENTARGETH="../include/source.h"'
msgGen: run msgGen
dlCpm.msg dlIomReceiver.msg dlIomSender.msg
mkdir -p ../src/
mkdir -p ../include/
./msgGen
make[2]: Leaving directory '/home/.../src/amba_ctrl/amba_ctrl_datalinkmsg/msg'
msgGen: ready
make[1]: Leaving directory '/home/.../src/amba_ctrl/amba_ctrl_datalinkmsg/msg'
-- Found ament_cmake: 0.0.0 (/home/alex/git/AMBA/Software/ros2_ws/install/share/ament_cmake/cmake)
-- Using PYTHON_EXECUTABLE: /usr/bin/python3
-- Configuring done
-- Generating done
-- Build files have been written to: /home/.../build/amba_ctrl_datalinkmsg
==> '. /home/.../build/amba_ctrl_datalinkmsg/cmake__build.sh && /usr/bin/make -j8 -l8' in '/home/.../build/amba_ctrl_datalinkmsg'
[ 50%] Building CXX object CMakeFiles/amba_ctrl_datalinkmsg.dir/src/source.cpp.o
[100%] Linking CXX static library libamba_ctrl_datalinkmsg.a
[100%] Built target amba_ctrl_datalinkmsg
+++ Installing 'amba_ctrl_datalinkmsg'
==> '. /home/.../build/amba_ctrl_datalinkmsg/cmake__install.sh && /usr/bin/make install' in '/home/.../build/amba_ctrl_datalinkmsg'
[100%] Built target amba_ctrl_datalinkmsg
Install the project...
-- Install configuration: ""
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/environment/library_path.sh
-- Up-to-date: /home/.../install/share/ament_index/resource_index/package_run_dependencies/amba_ctrl_datalinkmsg
-- Up-to-date: /home/.../install/share/ament_index/resource_index/parent_prefix_path/amba_ctrl_datalinkmsg
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/local_setup.bash
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/local_setup.sh
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/local_setup.zsh
-- Up-to-date: /home/.../install/share/ament_index/resource_index/packages/amba_ctrl_datalinkmsg
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/amba_ctrl_datalinkmsg.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/ament_cmake_export_dependencies-extras.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/ament_cmake_export_include_directories-extras.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/ament_cmake_export_libraries-extras.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/amba_ctrl_datalinkmsgConfig.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/amba_ctrl_datalinkmsgConfig-version.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/package.xml
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/register_amba_ctrl_datalinkmsg_implementation.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/get_amba_ctrl_datalinkmsg_typesupport.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/configure_amba_ctrl_datalinkmsg_library.cmake
-- Up-to-date: /home/.../install/include/amba_ctrl_datalinkmsg
-- Installing: /home/.../install/include/amba_ctrl_datalinkmsg/source.h
-- Installing: /home/.../install/lib/libamba_ctrl_datalinkmsg.a
-- [ament] Deploying: /home/.../install/local_setup.bash
-- [ament] Deploying: /home/.../install/local_setup.sh
-- [ament] Deploying: /home/.../install/local_setup.zsh
-- [ament] Deploying: /home/.../install/setup.bash
-- [ament] Deploying: /home/.../install/setup.sh
-- [ament] Deploying: /home/.../install/setup.zsh
-- [ament] Deploying: /home/.../install/_order_packages.py

删除src并包含 dir 

alex:overlay_ws$ ament build --only-packages amba_ctrl_datalinkmsg
# Topological order
 - amba_ctrl_datalinkmsg

Process package 'amba_ctrl_datalinkmsg' with context:
--------------------------------------------------------------------------------
 source_space => /home/.../src/amba_ctrl/amba_ctrl_datalinkmsg
  build_space => /home/.../build/amba_ctrl_datalinkmsg
install_space => /home/.../install
   make_flags => -j8, -l8
  build_tests => False
--------------------------------------------------------------------------------
+++ Building 'amba_ctrl_datalinkmsg'
==> '. /home/.../build/amba_ctrl_datalinkmsg/cmake__build.sh && /usr/bin/make cmake_check_build_system' in '/home/.../build/amba_ctrl_datalinkmsg'
==> '. /home/.../build/amba_ctrl_datalinkmsg/cmake__build.sh && /usr/bin/make -j8 -l8' in '/home/.../build/amba_ctrl_datalinkmsg'
make[2]: *** No rule to make target '/home/.../src/amba_ctrl/amba_ctrl_datalinkmsg/src/source.cpp', needed by 'CMakeFiles/amba_ctrl_datalinkmsg.dir/src/source.cpp.o'. Stop.
CMakeFiles/Makefile2:99: recipe for target 'CMakeFiles/amba_ctrl_datalinkmsg.dir/all' failed
make[1]: *** [CMakeFiles/amba_ctrl_datalinkmsg.dir/all] Error 2
Makefile:127: recipe for target 'all' failed
make: *** [all] Error 2

<== Command '. /home/.../build/amba_ctrl_datalinkmsg/cmake__build.sh && /usr/bin/make -j8 -l8' failed in '/home/.../build/amba_ctrl_datalinkmsg' with exit code '2'
<== Command '. /home/.../build/amba_ctrl_datalinkmsg/cmake__build.sh && /usr/bin/make -j8 -l8' failed in '/home/.../build/amba_ctrl_datalinkmsg' with exit code '2'

更改为ERROR_VARIABLE 

alex:overlay_ws$ ament build --only-packages amba_ctrl_datalinkmsg
# Topological order
 - amba_ctrl_datalinkmsg

Process package 'amba_ctrl_datalinkmsg' with context:
--------------------------------------------------------------------------------
 source_space => /home/.../src/amba_ctrl/amba_ctrl_datalinkmsg
  build_space => /home/.../build/amba_ctrl_datalinkmsg
install_space => /home/.../install
   make_flags => -j8, -l8
  build_tests => False
--------------------------------------------------------------------------------
+++ Building 'amba_ctrl_datalinkmsg'
==> '. /home/.../build/amba_ctrl_datalinkmsg/cmake__build.sh && /usr/bin/make cmake_check_build_system' in '/home/.../build/amba_ctrl_datalinkmsg'
make[1]: Entering directory '/home/.../src/amba_ctrl/amba_ctrl_datalinkmsg/msg'
make gen
make[2]: Entering directory '/home/.../src/amba_ctrl/amba_ctrl_datalinkmsg/msg'
msgGen: build msgGen
g++ msgGen.cpp -o msgGen --std=c++11 -D'GENTARGETCPP="../src/source.cpp"' -D'GENTARGETH="../include/source.h"'
msgGen: run msgGen
dlCpm.msg dlIomReceiver.msg dlIomSender.msg
mkdir -p ../src/
mkdir -p ../include/
./msgGen
make[2]: Leaving directory '/home/.../src/amba_ctrl/amba_ctrl_datalinkmsg/msg'
msgGen: ready
make[1]: Leaving directory '/home/.../src/amba_ctrl/amba_ctrl_datalinkmsg/msg'
-- Found ament_cmake: 0.0.0 (/home/alex/git/AMBA/Software/ros2_ws/install/share/ament_cmake/cmake)
-- Using PYTHON_EXECUTABLE: /usr/bin/python3
-- Configuring done
-- Generating done
-- Build files have been written to: /home/.../build/amba_ctrl_datalinkmsg
==> '. /home/.../build/amba_ctrl_datalinkmsg/cmake__build.sh && /usr/bin/make -j8 -l8' in '/home/.../build/amba_ctrl_datalinkmsg'
[ 50%] Building CXX object CMakeFiles/amba_ctrl_datalinkmsg.dir/src/source.cpp.o
[100%] Linking CXX static library libamba_ctrl_datalinkmsg.a
[100%] Built target amba_ctrl_datalinkmsg
+++ Installing 'amba_ctrl_datalinkmsg'
==> '. /home/.../build/amba_ctrl_datalinkmsg/cmake__install.sh && /usr/bin/make install' in '/home/.../build/amba_ctrl_datalinkmsg'
[100%] Built target amba_ctrl_datalinkmsg
Install the project...
-- Install configuration: ""
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/environment/library_path.sh
-- Up-to-date: /home/.../install/share/ament_index/resource_index/package_run_dependencies/amba_ctrl_datalinkmsg
-- Up-to-date: /home/.../install/share/ament_index/resource_index/parent_prefix_path/amba_ctrl_datalinkmsg
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/local_setup.bash
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/local_setup.sh
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/local_setup.zsh
-- Up-to-date: /home/.../install/share/ament_index/resource_index/packages/amba_ctrl_datalinkmsg
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/amba_ctrl_datalinkmsg.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/ament_cmake_export_dependencies-extras.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/ament_cmake_export_include_directories-extras.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/ament_cmake_export_libraries-extras.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/amba_ctrl_datalinkmsgConfig.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/amba_ctrl_datalinkmsgConfig-version.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/package.xml
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/register_amba_ctrl_datalinkmsg_implementation.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/get_amba_ctrl_datalinkmsg_typesupport.cmake
-- Up-to-date: /home/.../install/share/amba_ctrl_datalinkmsg/cmake/configure_amba_ctrl_datalinkmsg_library.cmake
-- Up-to-date: /home/.../install/include/amba_ctrl_datalinkmsg
-- Installing: /home/.../install/include/amba_ctrl_datalinkmsg/source.h
-- Installing: /home/.../install/lib/libamba_ctrl_datalinkmsg.a
-- [ament] Deploying: /home/.../install/local_setup.bash
-- [ament] Deploying: /home/.../install/local_setup.sh
-- [ament] Deploying: /home/.../install/local_setup.zsh
-- [ament] Deploying: /home/.../install/setup.bash
-- [ament] Deploying: /home/.../install/setup.sh
-- [ament] Deploying: /home/.../install/setup.zsh
-- [ament] Deploying: /home/.../install/_order_packages.py
alex:overlay_ws$

1 个解决方案

解决方案1
 0 已采纳  2017-04-30 17:18:13

感谢@Tsyvarev和其他人。 这是我选择的方式：

CMakeList.txt 

cmake_minimum_required(VERSION 3.5)

project(datalinkmsg)

add_custom_command(OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/src/DatalinkMsg.cpp
                   COMMAND make -C ${CMAKE_CURRENT_SOURCE_DIR}/msg -f Makefile)

add_custom_target( generate
                   ALL make -C ${CMAKE_CURRENT_SOURCE_DIR}/msg -f Makefile
                   DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/src/DatalinkMsg.cpp
                   DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/msg/msgGen.cpp
                   DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/msg/*.msg )
...

这与相应的味精/ Makefile一起运行 

MSGDEFS = *.msg

TARGET = msgGen
SOURCE = msgGen.cpp

GENTARGETCPP = ../src/DatalinkMsg.cpp
GENTARGETH   = ../include/DatalinkMsg.h

all: $(GENTARGETCPP) $(GENTARGETH) $(MSGDEFS) $(SOURCE)

$(GENTARGETCPP): $(MSGDEFS) $(SOURCE)
    make gen

$(GENTARGETH): $(MSGDEFS) $(SOURCE)
    make gen

gen: $(TARGET) $(MSGDEFS) $(SOURCE)
    mkdir -p ../src/
    mkdir -p ../include/
    ./$<

$(TARGET): msgGen.cpp
    g++ $< -o $@ --std=c++11

clean:
    rm -f $(TARGET) $(GENTARGETCPP) $(GENTARGETH)

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