hi all:
my code is work well on fedora 7 or fedora 8. now i installed
ubuntu, my code can't compile crrectly.
error is __errno_location function is not defined: undefined
reference to `__errno_location()'
but the function is exectly defined in libpthread.a.
nm /usr/lib/libpthread.a | grep errno
U __errno_location
errno.o:
00000051 T __errno_location
00000000 T __h_errno_location
U __errno_location
U __errno_location

why? please!

Allen

czp.opensource@gmail.com wrote:
>
> why? please!
>
Try a Linux group, they'll know.

--
Ian Collins.

czp.opensource@gmail.com wrote:

> hi all:
> my code is work well on fedora 7 or fedora 8. now i installed
> ubuntu, my code can't compile crrectly.
> error is __errno_location function is not defined: undefined
> reference to `__errno_location()'
> but the function is exectly defined in libpthread.a.
> nm /usr/lib/libpthread.a | grep errno
> U __errno_location
> errno.o:
> 00000051 T __errno_location
> 00000000 T __h_errno_location
> U __errno_location
> U __errno_location
>
> why? please!
>
> Allen
Sounds like a linking problem. Is it something to do with the way you have
specified libraries to be used. Often if you specify library A first and B
later in the list, then if something in B calls something in A, the linker
will not find it. One way to handle this is to repeat the list of
libraries, so that A now appears after B, as well as before it.

Chris Gordon-Smith
www.simsoup.info