libstdc++/8197: std::sin(float) causes undefined reference to sinf
Gabriel Dos Reis
Sun Oct 27 13:43:00 GMT 2002
"Christian Ehrhardt" <email@example.com> writes:
| I got some more information on this one and a patch that fixes the
| problem for me:
Thanks for reporting more info on this issue.
| The problem seems to be that std::sin(float) is an inline function defined in
| cmath. This inline function uses __builtin_sinf which in turn generates
| a reference to a function sinf.
| This function even exists and is exported from stubs.o:
| turing# nm sparc-sun-solaris2.9/libstdc++-v3/libmath/stubs.o |grep sinf
| 00000714 T sinf
| However, in libstdc++.so the symbol sinf is private:
Do we have infrastructure to export symbols based on target
configurations? If not, does telling linker-map.gnu to export
non-existing symbols an error? If not, is it documented to work as
PS: I just realized I asked more questions that could provide any hints.
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