Warnings on OpenSUSE

167[49/99] Compiling libntp/pymodule.c
16804:53:29 runner ['gcc-4.8', '-Wall', '-Wextra', '-Wstrict-prototypes', '-std=gnu99', '-fPIC', '-fno-strict-aliasing', '-fmessage-length=0', '-fstack-protector', '-funwind-tables', '-fasynchronous-unwind-tables', '-fmessage-length=0', '-fstack-protector', '-funwind-tables', '-fasynchronous-unwind-tables', '-I../../libisc/include', '-I../../libisc/unix/include', '-I../../libsodium/include', '-I..', '-I../../include', '-I/usr/include/python2.7', '-DPYTHONDIR="/usr/local/lib/python2.7/site-packages"', '-DPYTHONARCHDIR="/usr/local/lib64/python2.7/site-packages"', '-DHAVE_PYEMBED=1', '-DHAVE_PYEXT=1', '-DHAVE_PYTHON_H=1', '-D_FORTIFY_SOURCE=2', '-DNDEBUG', '-D_FORTIFY_SOURCE=2', '-DOPENSSL_LOAD_CONF', '../../libntp/pymodule.c', '-c', '-o/home/worker/worker/status/full_OpenSUSE_4.8.3_GCC_4.8.3_crypto/build/build/main/libntp/pymodule.c.2.o']
169In file included from /usr/include/limits.h:25:0,
170                 from /usr/lib64/gcc/x86_64-suse-linux/4.8/include-fixed/limits.h:168,
171                 from /usr/lib64/gcc/x86_64-suse-linux/4.8/include-fixed/syslimits.h:7,
172                 from /usr/lib64/gcc/x86_64-suse-linux/4.8/include-fixed/limits.h:34,
173                 from /usr/include/python2.7/Python.h:19,
174                 from ../../libntp/pymodule.c:7:
175/usr/include/features.h:341:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
176 #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
177    ^

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