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Editorial Team
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Asked: 2026-05-22T01:16:20+00:00

actual I’m struggling with CMAKE_CUSTOM_COMMAND. Actually I try to define a separated make target

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actual I’m struggling with CMAKE_CUSTOM_COMMAND. Actually I try to define a separated make target for my demo sources while i got dependencies i could only solve after “regular” build, when any file is generated. This target should perform some steps after any regular build:

  1. Compile sources
  2. Create executables

Up to this point anything works fine using add_subdirectory command with separated CMakeLists files, but this fails when I try to solve dependencies which have not
created yet (i.e. copy dll on windows platform to demo executable dir)

  1. Copy dependencies (dlls ect.)

I’ve tried to use the CMAKE_CUSTOM_TARGET and CMAKE_CUSTOM_COMMAND commands. But I fail. How I could invoke a build of my demo sources using a separeted target?

Thanks for any help.
Best regards.

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1 Answer

  1. Editorial Team

    To build one target after another you can use cmake add_dependencies command, specialy designed for this purpose.

    set (MY_LIB_DEPS
 target1
 target2
 #...
 targetn)

add_library(MY_LIB source.cpp)
target_link_libraries(MY_LIB ${MY_LIB_DEPS} 3rd_party_lib)
add_dependencies(MY_LIB ${MY_LIB_DEPS})

    Also copying dlls and executables typically is done during installation, not building (Using make – while running command make install just after make). To achieve this use install command. For installing executable, for example, it can be used like this:

    add_executable(my_exec my_exec_source.cpp)
target_link_libraries(my_exec ${MY_EXEC_DEPS})
#...
install(TARGETS my_exec RUNTIME
 DESTINATION ${MY_PROJECT_EXEC_INSTALL_PATH}
 RENAME "${MY_PROJECT_PREFIX}-main_exec")
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