Robert Dailey wrote:
Hi,
I want to define a preprocessor directive through CMakeLists.txt,
however the only documented method of doing this that I see is
*add_definitions()*. Is there a better way of doing this? According to
the documentation this isn't 100% portable, which in my opinion defeats
the entire purpose of using CMake to begin with (Or at the very least
that function itself). I don't think it is right to have to specify -D.
I should be able to do:
add_definitions( BOOST_ALL_NO_LIB )
However, I have to do:
add_definitions( -DBOOST_ALL_NO_LIB )
Any help would be greatly appreciated.
We have yet to find a compiler that does not support -D. However, it
seems unportable. In cmake 2.6 we added properties on directories and
targets that do not have the -D:
http://www.cmake.org/cmake/help/cmake2.6docs.html#prop_dir:COMPILE_DEFINITIONS
http://www.cmake.org/cmake/help/cmake2.6docs.html#prop_tgt:COMPILE_DEFINITIONS
That said, in doing that cmake parses add_definitions for -D and turns
it into one of those properties anyway. So, both are equally compiler
portable at this point should we ever see a compiler that does not use -D...
-Bill
_______________________________________________
CMake mailing list
CMake@cmake.org
http://www.cmake.org/mailman/listinfo/cmake
