Also, for the sake of completeness, it might be a good idea to spell out the tool chain being used, Siddarth.
Burt On Fri, Jan 3, 2020 at 7:58 AM Dave Barach via Lists.Fd.Io <dbarach= cisco....@lists.fd.io> wrote: > There should be no need to change anything except what your plugin links > against. > > > > As Damjan wrote: unless you’re more specific – name the symbols involved, > where they’re defined, etc. - we can’t help you. > > > > Dave > > > > *From:* vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> *On Behalf Of *siddarth > rai > *Sent:* Friday, January 3, 2020 2:14 AM > *To:* Damjan Marion <dmar...@me.com> > *Cc:* vpp-dev <vpp-dev@lists.fd.io> > *Subject:* Re: [vpp-dev] Linking external libraries to VPP executable > > > > Hi, > > > > My plugin is linked to an external lib. > > When my plugin calls the init function of that external lib, it runs into > some problems with symbols (presumably the external lib init function calls > a dlopen to load some other files) > > It seems the problem comes from the fact that VPP calls a dlopen of > plugins. > > A simple executable linking directly to the external library and calling > the init function of the external lib does not give the same problem. > > > > I prototyped the whole scenario by making a stub executable (acting like > VPP executable). Also made a stub shared object (like the plugin) which > links to the external lib. Then I did a dlopen of this shared object from > my stub executable (just like VPP) where the shared object code calls the > init function of external lib. This reproduces the same problem as seen > with VPP. I then linked my stub executable with the external library in > addition and then everything worked fine. > > > > In fact, I went ahead and changed the src/vlib/CMakeLists.txt so that > external lib links with vlib. This works fine for me. > > > > I just wanted to find out, if there is any generic infra available to link > additional external libraries to say, vlib, without fiddling around with > the build system of VPP. > > > > Regards, > > Siddarth > > > > On Thu, Jan 2, 2020 at 7:38 PM Damjan Marion <dmar...@me.com> wrote: > > > > 99% of vpp code is not in vpp executable so i wander why do you want to do > that? both some of vpp standard libraries (vnet, vlib, ..) and some of vpp > plugins are linked against libs, so to be able to help you i need more > details... > > -- > > Damjan > > > > On 2 Jan 2020, at 14:20, siddarth rai <sid...@gmail.com> wrote: > > > > Hi, > > > > I mean only 'vpp executable' > > > > Regards, > > Siddarth > > > > On Thu, Jan 2, 2020 at 5:10 PM Damjan Marion <dmar...@me.com> wrote: > > > what do you mean by “vpp executable lib”? can you provide more details > what exactly do you want to do? > > -- > Damjan > > > On 2 Jan 2020, at 12:27, siddarth rai <sid...@gmail.com> wrote: > > > > > > Hello, > > > > I am working on VPP 1908. > > I want to link some external non-vpp libraries to my vpp executable lib. > > > > Would it work if I add the path of external lib to vlib/CMakeLists.txt > file using 'LINK_LIBRARIES' ? > > > > Can anyone tell if this is the right way or if there is any other way ? > > > > Any help will be appreciated. > > > > Thank you, > > Siddarth > > -=-=-=-=-=-=-=-=-=-=-=- > > Links: You receive all messages sent to this group. > > > > View/Reply Online (#15013): https://lists.fd.io/g/vpp-dev/message/15013 > > Mute This Topic: https://lists.fd.io/mt/69378301/675642 > > Group Owner: vpp-dev+ow...@lists.fd.io > > Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [dmar...@me.com] > > -=-=-=-=-=-=-=-=-=-=-=- > > -=-=-=-=-=-=-=-=-=-=-=- > Links: You receive all messages sent to this group. > > View/Reply Online (#15020): https://lists.fd.io/g/vpp-dev/message/15020 > Mute This Topic: https://lists.fd.io/mt/69378301/675642 > Group Owner: vpp-dev+ow...@lists.fd.io > Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [dmar...@me.com] > -=-=-=-=-=-=-=-=-=-=-=- > > -=-=-=-=-=-=-=-=-=-=-=- > Links: You receive all messages sent to this group. > > View/Reply Online (#15029): https://lists.fd.io/g/vpp-dev/message/15029 > Mute This Topic: https://lists.fd.io/mt/69378301/541103 > Group Owner: vpp-dev+ow...@lists.fd.io > Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [bur...@gmail.com] > -=-=-=-=-=-=-=-=-=-=-=- >
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