CODEWITHSUNDEEP
postbuildmakefilecmakemessage
Genie
Genie

Reputation: 307

How to print messages after make done with cmake?

I'm trying to print messages after building process done using CMake.

I just want to inform the user after make command is done without any error.

How can I do it? I tried add_custom_target() but I cannot choose when to run.

Also, I tried add_custom_command(), again it doesn't give me the right result.

Any idea?

Thank you for your idea in advance.

Upvotes: 10

Views: 11219

Answers (3)

Genie
Genie

Reputation: 307

I just resolved the issue with the help of smarquis. Thank you.

Here's the step by step procedure to do it. Since my source tree are connected complicatedly with add_subdirectory() method, this method can be applied everyone.

  1. Initialize ALL_TARGETS variable cached. Add the line in CMakeLists.txt right below the version checking command.

     Set(ALL_TARGETS "" CACHE INTERNAL "")

  2. Override Add_library() and Add_executable() methods. If there's any other target, override it as well. Add the lines below at the end of CMakeLists.txt file.

     function(Add_library NAME)
   Set(ALL_TARGETS ${ALL_TARGETS} "${ARGN}" CACHE INTERNAL "ALL_TARGETS")
   _add_library(${NAME} ${ARGN})
 endfunction()

 function(Add_executable NAME)
   Set(ALL_TARGETS ${ALL_TARGETS} "${ARGN}" CACHE INTERNAL "ALL_TARGETS")
   _add_executable(${NAME} ${ARGN})
 endfunction()

  3. Create custom target that will execute all the things you want to do after building. In this example I just print some information on screen. Add it followed by the above.

     add_custom_target(BUILD_SUCCESSFUL ALL
                   DEPENDS ${ALL_TARGETS}
                   COMMAND ${CMAKE_COMMAND} -E echo ""
                   COMMAND ${CMAKE_COMMAND} -E echo "====================="
                   COMMAND ${CMAKE_COMMAND} -E echo "  Compile complete!"
                   COMMAND ${CMAKE_COMMAND} -E echo "====================="
                   COMMAND ${CMAKE_COMMAND} -E echo ""
                  )

  4. Tada!

Upvotes: 4

John
John

Reputation: 1834

To print a message after building a specific target, e. g. make yourtarget, you can use

add_custom_command(TARGET yourtarget POST_BUILD
                   COMMAND ${CMAKE_COMMAND} -E cmake_echo_color --cyan
                   "Message after yourtarget has been built.")

Instead of POST_BUILD, you could also use PRE_BUILD or PRE_LINK for other purposes, see documentation.

(You specified in the comments, that you like to print a message after all targets, but the original question is less precise. So it might be of some value for people looking here.)

Upvotes: 8

xStan
xStan

Reputation: 582

You could, indeed, do the following:

add_custom_target( FinalMessage ALL
    ${CMAKE_COMMAND} -E cmake_echo_color --cyan "Compilation is over!"
    COMMENT "Final Message" )
add_dependencies( FinalMessage ${ALL_TARGETS} )

That custom target depending on the list of all the targets you previously defined, you make sure it will be run last.

Upvotes: 11

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