I tried as you have suggested. I have one more problem. I tried the following CMakeLists.txt
-------- project(cmake_test) cmake_minimum_required(VERSION 2.6) add_executable(testcmake testcmake.m4.cpp) add_custom_command(OUTPUT testcmake.m4.cpp m4 -P -s testcmake.cpp > testcmake.m4.cpp VERBATIM) set_source_files_properties(testcmake.m4.cpp PROPERTIES GENERATED true SYMBOLIC true) ------------------ In the above testcmake.cpp is the actual file and I wish to create the processed file as testcmake.m4.cpp. But, I get the following error when I run cmake ------------------------- CMake Error at CMakeLists.txt:6 (add_custom_command): add_custom_command called with OUTPUT containing a ">". This character is not allowed. -- Configuring incomplete, errors occurred! ------------------------- 'm4' outputs only on stdout and does not have an option to specify the output file. Please suggest me a solution for this... Also, if I wish to do this for all CPP files, how do I specify it? 2009/6/5 Denis Scherbakov <denis_scherba...@yahoo.com>: > > >> I wanted to do some looping in macros which are not >> possible in GNU >> CPP. So, I wrote >> macros in m4. I wish to pre-process all my C/C++ code with >> m4 before >> handing it over to >> gcc. I did not find any direct way out for doing this in >> cmake. Any >> ideas how to do it with >> cmake? > > Use ADD_CUSTOM_COMMAND to call m4 preprocessor and OUTPUT file.cpp > Then use SET_SOURCE_FILES_PROPERTIES set GENERATED TRUE > and then include file.cpp into a list of sources for compilation. > > Denis > > > > _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake