On 4/2/2012 9:18 PM, Christoph Anton Mitterer wrote:
Hi.
I started to switch over all my build systems to CMake recently and am
stuck with the following.
I thought of the "C" in CMake ("cross-platform") that it means to that
most basic tasks are handled for most platforms/compilers in a
transparent way, but this seems all but be the case unfortunately.
Nothing is perfect. :)
This starts with commands like add_definitions where one have to use
"-D" as parameter suffix (well eventually there could be compilers which
don't use -D as option for this)... and ends with the following what I
though would really be one of the basics in business.
I was concern about this for a while, however, we have never seen a
compiler that did not take -D. :) Actually, I ported to a VMS
compiler once and it used a different flag, but I was able to fix it
from the CMake source level, translating the -D to the correct flag for
that compiler. So, -D is not really an issue, as CMake can correct for
it if need be. The CMake api for definitions is -D.
I'd like to allow users of my build system to specify whether
- everything shall be linked statically (i.e. what gcc's --static does)
- selectively select libraries (for which I allow it) to be linked
statically as shared objects or to be dynamically loaded[0].
Isn't this possible? If it is how?
I mean I've googled obviously and found ugly looking hacks where you set
some magic variables to --static (e.g.)... but this is then absolutely
importable.
Rather I'd have expected some clean interface e.g.
target_link_libraries(foo STATIC lib1 lib2 SHARED lib3 lib4)
where obviously lib1/2 are linked statically and 3/4 as shared objects.
That would be nice, and has been on the todo list for a while. However,
it has never been important enough for someone to actually implement.
Any ideas?! :-)
Well, you could implement it... :)
This is an interesting interface:
target_link_libraries(foo STATIC lib1 lib2 SHARED lib3 lib4)
I would suggest that you move to the discussion to the cmake-developers
list.
-Bill
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