On Fri, Jan 15, 2010 at 9:44 AM, Marcel Loose <lo...@astron.nl> wrote:
> Hi Jack, > > The difference with your and my case is that you have an input file > (the .xsd file) and output files (the .h and .cpp files). In my case I > generate the output file, e.g. myheader.h, from myheader.h.in, using > configure_file(). The problem is that I cannot get this to work during > 'make', only during 'cmake'. > > Best regards, > Marcel Loose. > > On Fri, 2010-01-15 at 15:04 +0100, Smith Jack (Ext. - UGIS - UniCredit > Group) wrote: > > I do a similar thing with an XSD file from which I generate c++ > wrapper classes for accessing the corresponding XML > > > > Note the DEPENDS line ! > > > > MACRO(XSD FILE NAMESPACE) > > ADD_CUSTOM_COMMAND( > > OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/xml/${FILE}.cpp > > OUTPUT ${CMAKE_CURRENT_SOURCE_DIR}/xml/${FILE}.h > > DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/xml/${FILE}.xsd > > COMMAND ${XAPI_CODESYNTH}/bin/xsd > > ARGS cxx-tree --generate-serialization --hxx-suffix .h > --cxx-suffix .cpp --fwd-suffix -fwd.hxx --type-naming java > --function-naming java --namespace-map =${NAMESPACE} > --generate-polymorphic --output-dir ${CMAKE_CURRENT_SOURCE_DIR}/xml > ${CMAKE_CURRENT_SOURCE_DIR}/xml/${FILE}.xsd > > COMMENT "generating Codesynthesis Wrappers") > > ENDMACRO(XSD) > > > > > > > > > -----Original Message----- > > > From: cmake-boun...@cmake.org > > > [mailto:cmake-boun...@cmake.org] On Behalf Of Marcel Loose > > > Sent: Friday, January 15, 2010 2:55 PM > > > To: cmake@cmake.org > > > Subject: [CMake] How to regenerate source file during make? > > > > > > Hi all, > > > > > > I've been struggling with this for hours now and I can't seem > > > to get a grip on it. > > > > > > I have a header file that must be (re)generated during 'make' > > > when some external data have changed. I can successfully > > > generate this file during 'cmake' using configure_file(), but > > > I haven't been able to figure out how I can trigger the > > > configure_file() during make. > > > > > > Should I define a target for this header file? Or can I > > > specify some kind of file dependency, such that when the > > > header file is missing our out-of-date, it will be (re)generated? > > > > > > I guess it must be some clever combination of > > > add_custom_command() and add_custom_target(). > > > > > > Best regards, > > > Marcel Loose. > This should work already: if you change my_header.h.in then cmake should re-run to re-configure your file at 'make' time. If you have additional dependencies that should trigger a re-configure, you should probably convert it to an add_custom_command such that it happens at build time.
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