Interdependent libraries in BinDeps

I am writing a wrapper for a library foo, which contains symbols from another helper library bar, but does not contain shared object dependencies to bar. My goal is to build and install both foo and bar within a single package using BinDeps. BinDeps will successfully build both libs and will find bar, but keeps failing for foo due to non-satisfied dependencies.

Provider BinDeps.BuildProcess failed to satisfy dependency - Library foo

This is due to fact that BinDeps performs some checks using dlopen, which fail since the symbols from bar are not (yet) available. I could avoid that by loading bar globally to avoid problems for the checks
Libdl.dlopen(:libbar, Libdl.RTLD_LAZY | Libdl.RTLD_GLOBAL )
however this only works once both libs have already been built.
Similarly even if I prebuild the libs and load bar, the autogenerated deps.jl will be missing the Libdl.RTLD_GLOBAL flag.

I wonder what’s the suggested way of dealing with such a problem?