我正在尝试使用 ld
直接链接以隔离构建问题。
当我包含 /usr/lib/gcc/x86_64-linux-gnu/4.7/libstdc++.so
时,我遇到了一些问题:
ac-aaa.o: In function `__static_initialization_and_destruction_0':
/usr/include/c++/4.7/iostream:75: undefined reference to `__dso_handle'
ac-callback.o: In function `__static_initialization_and_destruction_0':
/usr/include/c++/4.7/iostream:75: undefined reference to `__dso_handle'
...
正在搜索 __dso_handle
:
$ grep __dso_handle /usr/lib/gcc/x86_64-linux-gnu/4.7/*
Binary file /usr/lib/gcc/x86_64-linux-gnu/4.7/cc1plus matches
Binary file /usr/lib/gcc/x86_64-linux-gnu/4.7/crtbegin.o matches
Binary file /usr/lib/gcc/x86_64-linux-gnu/4.7/crtbeginS.o matches
Binary file /usr/lib/gcc/x86_64-linux-gnu/4.7/crtbeginT.o matches
crtbegin.o
、crtbeginT.o
和 crtbeginS.o
有何区别?