<div class="gmail_quote">On Thu, Aug 27, 2009 at 3:11 PM, Andrey Maslennikov <span dir="ltr"><<a href="mailto:andrew.maslennikov@gmail.com">andrew.maslennikov@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
My case: I have one
file which can be compiled into 4 different binaries using macros. For
this I use add_definitions() and remove_definitions() commands. But as
I understand these commands has global effect in CMakeLists file. How can I
define and undefine macros in <i>one</i> CMakeLists file?<br><br>For this case more useful another command - set_target_properties() with property COMPILE_FLAGS. It really helped me, but I was confronted with difficulties in this way. I can't call it with 2 parameters, like set_target_properties( target PROPERTIES COMPILE_FLAGS -D__flag1__ COMPILE_FLAGS -D__flag2__ ). In this case no keys were defined... It's very strange, because CMake's documentation present usage example with multiple properties in one command. I solved this issue with variable which contains all needed keys.</blockquote>
<div><br>You could write a small CMakeLists function that uses get_target_property() followed by <br>set_target_properties() to append flags to the COMPILE_FLAGS property.<br><br>Give this a shot:<br><br>function(append_compile_flags_to_target _target)<br>
get_target_property(_existing ${_target} COMPILE_FLAGS)<br> if(_existing)<br> set_target_properties(${_target} PROPERTIES COMPILE_FLAGS "${_existing} ${ARGN}")<br> else()<br> set_target_properties(${_target} PROPERTIES COMPILE_FLAGS ${ARGN})<br>
endif()<br>endfunction()<br><br>Overall though I agree with you, it should be possible to append multiple properties to the same set_target_properties() command.<br><br></div></div>-- <br>Philip Lowman<br>