[CMake] Problem copying generated files in an out-of-source build

[Eric Tellefsen]

Anatoly,

Thanks for the advice - I included the binary dir and all is well

Eric

Anatoly Shirokov <shirokov_a at mail.ru> wrote on 09/25/2009 12:25:16 AM:

> May be it helps:
> 
> generated/CMakeLists.txt:
> 
> project (generated)
> 
> add_custom_command(...)
> ...
> depends_on_generated/CMakeLists.txt:
> 
> project(depends_on_generated)
> ...
> # add the generated binary dir to the search paths
> include_directories(${generated_BINARY_DIR})
> ...
> 
> BR, Anatoly
> 
> Eric Tellefsen:
> >
> > I am having some trouble with the following.
> >
> > I have a static library project which has a tree structure of the main 

> > directory and a group of sub directories.  The main project has a 
> > CMakeLists.txt file as well as the sub directories.  Each of the sub 
> > directories CMakeLists.txt file generates .cpp & .h files from a .wsdl 

> > file via calls to gSoap executables.  When make is run, all the sub 
> > directory files are generated into the respective 
> > CMAKE_CURRENT_BINARY_DIR locations, and then compiled by the project 
> > level generated Makefile.  All of this works fine.
> >
> > My seemingly simple problem is as follows.  This library and all of 
> > the others being used by my group, I have just converted to CMake and 
> > am using out-of-source builds.  Another library depends on the WSDL 
> > (mentioned above) sub directories for header files which are generated 

> > into CMAKE_CURRENT_BINARY_DIR.  Unfortunately this inter-library 
> > dependency is looking to the CMAKE_CURRENT_SOURCE_DIR.  When this 
> > library builds out-of-source, it cannot find  these headers and the 
> > compile fails.
> >
> > My short-term solution was to copy these files from the respective 
> > BINARY to SOURCE directories using a custom command.  This does not 
> > seem to work and I cannot understand why.  I've put this code into 
> > both the master CMakeLists.txt  as well as the specific subdirectory 
> > CMakeLists.txt file.
> >
> > Am I taking the wrong approach?  Is my syntax for the custom command 
> > incorrect?  I'm stumped and could use some suggestions from the group.
> >
> > Thanks
> >
> > Eric
> >
> > Custom command is below
> >
> > macro( GenericFileCopy Filename FromDir ToDir )
> >
> > ADD_CUSTOM_COMMAND(
> >         OUTPUT  ${ToDir}/${Filename}
> >         COMMAND ${CMAKE_COMMAND} -E chdir ${FromDir} cp ${Filename} 
> > ${ToDir}
> >         DEPENDS ${FromDir}/${Filename}
> >         COMMENT "Copying ${FromDir}/${Filename} to ${ToDir}"
> >         )
> > endmacro( GenericFileCopy )
> >
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