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今天在rk3399pro开发板上编译rockchip的rga库，

出现了如下错误： librga.so: undefined reference to pthread_mutexattr_destroy' librga.so: undefined reference topthread_mutexattr_setpshared’ librga.so: undefined reference to `pthread_mutexattr_init’ collect2: error: ld returned 1 exit status CMakeFiles/im2d.dir/build.make:121: recipe for target ‘im2d’ failed make[2]: *** [im2d] Error 1 CMakeFiles/Makefile2:67: recipe for target ‘CMakeFiles/im2d.dir/all’ failed make[1]: *** [CMakeFiles/im2d.dir/all] Error 2 Makefile:83: recipe for target ‘all’ failed make: *** [all] Error 2 可以通过以下两种方法解决 方法1： 之前命令：./cmake-linux.sh 修改命令：./cmake-linux.sh -lpthread 方法2： 在buildroot.cmake需要加上SET(CMAKE_CXX_FLAGS “${CMAKE_CXX_FLAGS} -pthread”)

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