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.
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.