[问答]编译过程中遇到ffmpeg相关的编译失败问题，怎么破?

查看源码目录/vendor/hisi/hi35xx/middleware/source/third_party/ffmpeg/ffmpeg-y/ffbuild/config.log  
主要报错信息如下:  /home/fleetingold/llvm/bin/../bin/clang -mfloat-abi=softfp -mfpu=neon-vfpv4 -fPIC -fstack-protector-all -s -ftrapv -mcpu=cortex-a7 -c -o /tmp/ffconf.rxwaXFqw/test.o /tmp/ffconf.rxwaXFqw/test.c  clang-9: warning: argument unused during compilation: '-mfloat-abi=softfp' [-Wunused-command-line-argument]  clang-9: warning: argument unused during compilation: '-mfpu=neon-vfpv4' [-Wunused-command-line-argument]  clang-9: warning: argument unused during compilation: '-s' [-Wunused-command-line-argument]  clang-9: warning: argument unused during compilation: '-mcpu=cortex-a7' [-Wunused-command-line-argument]  /home/fleetingold/llvm/bin/../bin/clang -Wl,-z,relro,-z,now -fPIC -mcpu=cortex-a7 -o /tmp/ffconf.rxwaXFqw/test /tmp/ffconf.rxwaXFqw/test.o  /usr/bin/ld: cannot find crt1.o: No such file or directory  /usr/bin/ld: cannot find crti.o: No such file or directory  clang-9: error: linker command failed with exit code 1 (use -v to see invocation)  C compiler test failed.  
怎么破?