I did some more research. It looks like every symbol with a leading underscore disappears if build with debuild or other. I have tried to remove all compiler and linker flags not needed or differ from vanilla build, but this had no effect.
As i could not see any other relevant changes within the patches, i think the library breaks while adding symvers. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1393752 Title: missing symbols in libssl1.0.1f-1ubuntu2.7 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/1393752/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs