How to execute a command in cmake before generation?
Question
I want that CMake runs a command before it starts its generating process.
Therefore I add execute_process at the very beginning of my *CMakeLists.txt` but the expected prompts are come only sporadic.
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"
)
Any Ideas?
Why I want to do so:
I need to generate a Cpp class from some simple definition files.
- check if the source of the generator or the definition files newer than the generated class file
- build generator if needed
- generate source files
- build a static library
The points 1 to 3 I have solved with a simple Makefile. 4. is done with a CMakeList.txt because this library ist a subproject in a bigger project.
The output to the CMakeList.txt from above without my 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
If the makefile were called correctly cmake can find the source.cpp . But without the call no source and header exist...
the tree before calling the msgGen
.
├── CMakeLists.txt
├── msg
│ ├── def1.msg
│ ├── def2.msg
│ ├── def3.msg
│ ├── Makefile
│ └── msgGen.cpp
├── package.xml
└── README.md
the tree after calling the msgGen
.
├── CMakeLists.txt
├── include
│ └── source.h
├── msg
│ ├── def1.msg
│ ├── def2.msg
│ ├── def3.msg
│ ├── Makefile
│ ├── msgGen
│ └── msgGen.cpp
├── package.xml
├── README.md
└── src
└── source.cpp
adding 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
removing src and include 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'
changing to 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 answers
solution1
0 ACCPTED 2017-04-30 17:18:13
Thanks to @Tsyvarev and the others. Here is the way I choose:
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 )
...
this runs with the corresponding msg/Makefile
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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