[CMake] ADD_CUSTOM_COMMAND and Visual Studio 2010

[Michael Wild]

On 31. Mar, 2010, at 12:07 , elizabeta petreska wrote:

> Hello
> 
> I am using cmake 2.8 to generate Visual Studio 2010 solution files.
> 
> I have the following cmakelists.txt :
> 
> set(PROJECT_NAME Test2)
> PROJECT(${PROJECT_NAME})
> 
> FILE(GLOB Test_SRCS
> main.cpp
>  )
> 
> 
> ADD_EXECUTABLE(${PROJECT_NAME}
>  ${Test_SRCS}
> )
> 
> 
> ADD_CUSTOM_COMMAND (OUTPUT "$(ConfigurationName)/Foo.txt"
>       COMMAND echo Foo >  "$(ConfigurationName)/Foo.txt"
>       DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/myfile.txt
> )
> ADD_CUSTOM_TARGET (Foo DEPENDS "$(ConfigurationName)/Foo.txt")
> ADD_DEPENDENCIES(${PROJECT_NAME} Foo)
> 
> The problem is that Foo.txt is generated on every build on the solution
> although myfile.txt is not changed.

Use absolute paths in the OUTPUT and DEPENDS options. And you should also use the CMAKE_CFG_INTDIR variable instead of $(ConfigurationName)...

set(outfile "${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}/Foo.txt")
add_custom_command(OUTPUT "${outfile}"
  COMMAND echo Foo > "${outfile}"
  DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/myfile.txt"
  )
add_custom_target(Foo DEPENDS "${outfile}")


HTH

Michael