在py-faster-rcnn/lib里make时报错：
c++ -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions -Wl,-z,relro -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -Wdate-time -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -Wl,-Bsymbolic-functions -Wl,-z,relro -Wdate-time -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security build/temp.linux-x86_64-2.7/nms/nms_kernel.o build/temp.linux-x86_64-2.7/nms/gpu_nms.o -lcudart -o /home/wzy/py-faster-rcnn/lib/nms/gpu_nms.so
c++: 错误： unrecognized command line option ‘-Wdate-time’
c++: 错误： unrecognized command line option ‘-fstack-protector-strong’
c++: 错误： unrecognized command line option ‘-Wdate-time’
c++: 错误： unrecognized command line option ‘-fstack-protector-strong’
error: command 'c++' failed with exit status 1
突然想到之前装cuda时gcc版本过高降低了的，现在可能是要改回去。
root@wzy-ubuntu:/usr/bin# ls gcc*
gcc gcc-5 gcc-ar-4.7 gcc-nm gcc-nm-5 gcc-ranlib-4.7
gcc-4.7 gcc-ar gcc-ar-5 gcc-nm-4.7 gcc-ranlib gcc-ranlib-5
root@wzy-ubuntu:/usr/bin# rm gcc
root@wzy-ubuntu:/usr/bin# ln -s gcc-5 gcc
root@wzy-ubuntu:/usr/bin# rm g++
root@wzy-ubuntu:/usr/bin# ln -s g++-5 g++
root@wzy-ubuntu:/usr/bin# ls
然后make，貌似好了。
x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/lib/python2.7/dist-packages/numpy/core/include -Ipycocotools -I/usr/include/python2.7 -c pycocotools/_mask.c -o build/temp.linux-x86_64-2.7/pycocotools/_mask.o -Wno-cpp -Wno-unused-function -std=c99
x86_64-linux-gnu-gcc -pthread -shared -Wl,-O1 -Wl,-Bsymbolic-functions -Wl,-Bsymbolic-functions -Wl,-z,relro -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -Wdate-time -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -Wl,-Bsymbolic-functions -Wl,-z,relro -Wdate-time -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security build/temp.linux-x86_64-2.7/pycocotools/maskApi.o build/temp.linux-x86_64-2.7/pycocotools/_mask.o -o /home/wzy/py-faster-rcnn/lib/pycocotools/_mask.so
rm -rf build