x86_64-linux-gnu/libgdk-x11-2.0.so: error adding symbols: DSO missing from command line

•  错误

/usr/bin/ld: /tmp/ccEhmpVQ.o: undefined reference to symbol 'gdk_screen_get_default'
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/libgdk-x11-2.0.so: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status

• 解决办法

判断是链接的库中，同时包含3.0、2.0。