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jpirko / libteam

team netdevice library
GNU Lesser General Public License v2.1
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libteam.pc: useless "Requires: libnl-3.0"? #12

Closed onlyjob closed 8 years ago

onlyjob commented 9 years ago

It seems that team.h and teamdctl.h use no headers from libnl-3-dev so it might be that Requires: libnl-3.0 in libteam.pc is unnecessary. See more in https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=780855#10

jpirko commented 9 years ago

not sure how does that work in debian. But generally, libteam needs features which were added to libnl3.

onlyjob commented 9 years ago

OK, thanks for confirming. Perhaps on that instance no such features were used so linker gave a warning about "useless dependency"... Let's close this.

rfc1036 commented 8 years ago

It works the same way on every Linux system: if libteam uses symbols from libnl-3 then libteam itself must be linked with libnl3.

Relying on the dynamic linker to find the symbols because the main binary is linked with libnl-3 works most of the time, but is broken.

FYI, the canonical reference about writing shared libraries is http://people.redhat.com/drepper/dsohowto.pdf .