/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libcheck.a(check.o): In function `tcase_create':
(.text+0x192): undefined reference to `floor'
/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libcheck.a(check.o): In function `tcase_create':
(.text+0x1b9): undefined reference to `floor'
/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libcheck.a(check.o): In function `tcase_set_timeout':
(.text+0x470): undefined reference to `floor'
/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libcheck.a(check.o): In function `tcase_set_timeout':
(.text+0x497): undefined reference to `floor'
/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libcheck.a(check_pack.o): In function `ppack':
(.text+0x53c): undefined reference to `__pthread_register_cancel'
/usr/lib/gcc/i686-linux-gnu/4.8/../../../i386-linux-gnu/libcheck.a(check_pack.o): In function `ppack':
(.text+0x57b): undefined reference to `__pthread_unregister_cancel'