During the linker phase ln fails, because math library is not linked with explicitly.
How to reproduce:
$ cmake .
$ make
Scanning dependencies of target man
[ 0%] Built target man
Scanning dependencies of target sakura
[100%] Building C object CMakeFiles/sakura.dir/src/sakura.o
Linking C executable src/sakura
/usr/bin/ld: CMakeFiles/sakura.dir/src/sakura.o: undefined reference to symbol 'roundf@@GLIBC_2.2.5'
/usr/bin/ld: note: 'roundf@@GLIBC_2.2.5' is defined in DSO /lib/libm.so.6 so try adding it to the linker command line
/lib/libm.so.6: could not read symbols: Invalid operation
collect2: ld returned 1 exit status
make[2]: *** [src/sakura] Error 1
make[1]: *** [CMakeFiles/sakura.dir/all] Error 2
make: *** [all] Error 2
Versions:
coreutils 8.15
glibc 2.15
cmake 2.8.7
gcc 4.6.2
