kdelibs fails to build on recent rawhide (works on F-11), seems to have to do with not detecting isinf/isnan properly. From build.log: ... -- Looking for isnan -- Looking for isnan - not found. -- Looking for isinf -- Looking for isinf - not found. ... /builddir/build/BUILD/kdelibs-4.3.1/kjs/operations.cpp: In function 'bool KJS::isNaN(double)': /builddir/build/BUILD/kdelibs-4.3.1/kjs/operations.cpp:55: error: '_isnan' was not declared in this scope make[2]: *** [kjs/CMakeFiles/kjs.dir/operations.o] Error 1 ... Doesn't seem to be related to non-use of _GNU_SOURCE (and friends), cmake seems to define these already (but I'm not 100% sure). See also, http://koji.fedoraproject.org/koji/taskinfo?taskID=1645540 Someone on rawhide will probably have to take a closer look, see if this is kde or glibc (or other) at fault here.
Seems like it's our bug - it does not find isnan with %{cmake_kde4} macro but it does with just "cmake .." command in SPEC file.
Fixed, building now. woo. glibc to the rescue.