undefined reference to `clock_gettime'

简介: 下面这个错误通常是因为链接选项里漏了-lrt,但有时发现即使加了-lrt仍出现这个问题,使用nm命令一直,会发现-lrt最终指向的文件没有包含任何symbol,这个时候,可以找相应的静态库版本librt.a,看看它里面是否存在`clock_gettime'。

下面这个错误通常是因为链接选项里漏了-lrt,但有时发现即使加了-lrt仍出现这个问题,使用nm命令一直,会发现-lrt最终指向的文件没有包含任何symbol,这个时候,可以找相应的静态库版本librt.a,看看它里面是否存在`clock_gettime'。

/data1/mooon/run/lib/libsys.a(lock.o): In function `sys::CLock::timed_lock(unsigned int)':
/data1/mooon/src/common_library/src/sys/./lock.cpp:101: undefined reference to `clock_gettime'
/data1/mooon/run/lib/libsys.a(event.o): In function `sys::CEvent::timed_wait(sys::CLock&, unsigned int)':
/data1/mooon/src/common_library/src/sys/./event.cpp:56: undefined reference to `clock_gettime'

提示:使用/usr/lib/x86_64-linux-gnu/librt.a替代-lrt
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