[CMake] Question about INSTALL_COMMAND for ExternalProject_Add()

[Workbench@gmx.at]

Now i've managed to create the right INSTALL_COMMAND but i don't know
how to link with my executable. i tried

add_executable(MyApp ${src})

target_link_libraries(MyApp STATIC GLFW GLAD)

and i get the following error message:

CMake Error at CMakeLists.txt:96 (target_link_libraries):
  Target "LIBGLAD" of type UTILITY may not be linked into another target.
  One may link only to INTERFACE, OBJECT, STATIC or SHARED libraries, or to
  executables with the ENABLE_EXPORTS property set.


CMake Error at CMakeLists.txt:96 (target_link_libraries):
  Target "LIBGLFW" of type UTILITY may not be linked into another target.
  One may link only to INTERFACE, OBJECT, STATIC or SHARED libraries, or to
  executables with the ENABLE_EXPORTS property set.



target_link_libraries(M

On 10.03.19 10:40, Workbench at gmx.at wrote:
> Hi everyone,
>
> i've managed to use ExternalProject_Add to install GLFW but i have
> troubles with glad...
>
> Here is my code for GLFW wich is working:
>
> include(ExternalProject)
> ExternalProject_Add(GLFW
>     PREFIX ${LIBDIR}/${CMAKE_BUILD_TYPE}/glfw-log
>     GIT_REPOSITORY https://github.com/glfw/glfw.git
>     GIT_TAG 3.2.1
>     SOURCE_DIR ${CMAKE_BINARY_DIR}/glfw
>     UPDATE_COMMAND ""
>     PATCH_COMMAND ""
>     INSTALL_DIR ${LIBDIR}/glfw
>     CMAKE_ARGS -DCMAKE_BUILD_TYPE:String={CMAKE_BUILD_TYPE}
> -DCMAKE_INSTALL_PREFIX=${LIB_DIR}/glfw
> )
>
> Now i tried the same with GLAD but i had to add INSTALL_COMMAND to make
> it work but i've no clue what i should enter there to install it the
> same way i did with glfw..
>
> ExternalProject_Add(GLAD
>     PREFIX ${LIBDIR}/${CMAKE_BUILD_TYPE}/glad-log
>     GIT_REPOSITORY https://github.com/Dav1dde/glad.git
>     GIT_TAG v0.1.29
>     SOURCE_DIR ${CMAKE_BINARY_DIR}/glad
>     UPDATE_COMMAND ""
>     PATCH_COMMAND ""
>     INSTALL_DIR ${CMAKE_BINARY_DIR}/${CMAKE_BUILD_TYPE}/glad
>     CMAKE_ARGS -DCMAKE_BUILD_TYPE:String=${CMAKE_BUILD_TYPE}
> -DCMAKE_INSTALL_PREFIX=${LIB_DIR}/glad
>     INSTALL_COMMAND "??"
> )
>
>
> I hope someone can help me, i'm a bit clueless about this.
>
>
> best regards!
>
>
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