[CMake] cmake PyQT/SIP

[luxInteg]

On Thursday 02 December 2010 07:48:55 Michael Wild wrote:

> >> 
> >> Use ADD_CUSTOM_COMMAND.
> > 
> > @Michael: that advice is not correct.  add_custom_command sets up a
> > command to be run at "make" time. Instead, the execute_process command
> > should be used to run a command at "CMake" time which is what the OP
> > needs to generate his *.cpp files.
> > 
> > @LuxInteg:  See the CMakeLists.txt file at
> > http://plplot.svn.sourceforge.net/viewvc/plplot/trunk/bindings/qt_gui/pyq
> > t4/
> > 
> > for an example of generating source code with sip.
> > 
> > Alan
> 
> Huh, why can't he run sip at build time? If you do:
> 
> find_program(SIP_EXECUTABLE sip)
> 
> add_custom_command(OUTPUT
>     ${CMAKE_CURRENT_BINARY_DIR}/fileC.cpp
>     ${CMAKE_CURRENT_BINARY_DIR}/fileD.cpp
>   COMMAND ${SIP_EXECUTABLE} -c ${CMAKE_CURRENT_BINARY_DIR}
>     ${CMAKE_CURRENT_SOURCE_DIR}/fileA.sip
>   DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/fileA.sip
>   COMMENT "Processing ${CMAKE_CURRENT_SOURCE_DIR}/fileA.sip"
>   VERBATIM)
> 
> add_library(myPythonExtension SHARED
>   ${CMAKE_CURRENT_BINARY_DIR}/fileC.cpp
>   ${CMAKE_CURRENT_BINARY_DIR}/fileD.cpp)
> 
> # possibly link with required libraries here...
> 
Thanks for your hep so far

I have been experimenting on the  above with the following results:-

When the  dependency has other dependencies  the  above appears to fail;  i.e 
when  filA.sip calls some file  say  PyQt4/QTCore/somefile.sip.  (And I do not 
know of anyway of fitting this inside the add_custom_command() function.)

I tried  beforehand 
                    this:-
set(PYQt4_SIP_FILES   /usr/share/sip/PyQt4)   
                    then 
COMMAND ${SIP_EXECUTABLE} -c ${CMAKE_CURRENT_BINARY_DIR}
    ${CMAKE_CURRENT_SOURCE_DIR}/fileA.sip
  DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/fileA.sip
  ${PYQt4_SIP_FILES}/PyQt4/QTCore/somefile.sip
  MAIN_DEPENDENCY ${CMAKE_CURRENT_SOURCE_DIR}/fileA.sip

I even tried (the penultimate line)   with ${PYQt4_SIP_FILES}/PyQt4/  

but each time it comes  back with 

"sip: Unable to find file "QtCore/somefile.sip" "

I am using  a FindSIP.cmake that kde4 uses.

Advice would be appreciated

luxInteg