[CMake] Installing results of ADD_CUSTOM_COMMAND

[Alex Brooks]

Hi,

I have a bit of a problem using cmake for IDL files.

I used ADD_CUSTOM_COMMAND to generate .h/.cpp files from .idl files:

FOREACH ( SUFFIX ${IDL_SUFFIXES} )
      STRING( REGEX REPLACE "\\.idl" ${SUFFIX} OUTPUT "${IDL_SOURCE}" )
      ADD_CUSTOM_COMMAND(
        OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT}
        COMMAND ${TAO_IDL}
        ARGS ${CMAKE_CURRENT_SOURCE_DIR}/${IDL_SOURCE} ${TAO_IDL_ARGS}
        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${IDL_SOURCE}
        )
	...

The .cpp files are then compiled into a library and marked for
installation:

ADD_LIBRARY( ${LIB_NAME} ${IDL_CPP_FILES} ${HUMAN_SOURCE_LIST} )

I also want to install the .h files.

I tell cmake to install the header files with:

FOREACH ( FILE ${IDL_HEADER_FILES} )
    INSTALL_FILES( /include/orca ${FILE} )
ENDFOREACH ( FILE ${IDL_HEADER_FILES} )

The problem is that cmake can't find the IDL_HEADER_FILES when it is run
(because they're only generated from .idl later, when 'make' is run).

The only way I've found to make it work correctly is to do:
'cmake .; make; cmake .; make install'

The second 'cmake .' can see the generated header files and creates the
correct install rules.  There's gotta be a better way of doing this
though -- can anyone offer any suggestions?


Thanks,

Alex