编译链接时报错：
/home/toolchain/gcc/bin/../lib/gcc/aarch64-linux-gnu/7.3.1/../../../../aarch64-linux-gnu/bin/ld: cannot find /lib/libpthread.so.0
/home/toolchain/gcc/bin/../lib/gcc/aarch64-linux-gnu/7.3.1/../../../../aarch64-linux-gnu/bin/ld: cannot find /usr/lib/libpthread_nonshared.a
collect2: error: ld returned 1 exit status
make[2]: *** [code/main/CMakeFiles/ymap.dir/build.make:138: bin/xag_flymap] Error 1
make[1]: *** [CMakeFiles/Makefile2:1334: code/main/CMakeFiles/ymap.dir/all] Error 2
make: *** [Makefile:130: all] Error 2
解决办法：
a.定要检查库的路径
b.尽量把库放在一个路径下
c.尽量避免绝对路径