compiler flags leaking through krb5-config --libs

[Andreas Hasenack]

krb5-config --libs is leaking some compiler specific flags that we define in Ubuntu:

$ krb5-config --libs
-L/usr/lib/x86_64-linux-gnu/mit-krb5 -Wl,-Bsymbolic-functions -flto=auto -ffat-lto-objects -flto=auto -Wl,-z,relro -lkrb5 -lk5crypto -lcom_err

That ones that concern me more specifically are:
- -Wl,-Bsymbolic-functions
- -lto related ones

I'm unsure if -Wl,-z,relro should be there either.

It looks like LDFLAGS got mixed with LIBS. pkg-config's output is different and only contains the libraries and library path:

$ pkg-config --libs krb5
-L/usr/lib/x86_64-linux-gnu/mit-krb5 -lkrb5 -lk5crypto -lcom_err

[Andreas Hasenack (ahasenack)]

Post in the upstream mailing list, let's see if this spawns a discussion:

https://mailman.mit.edu/pipermail/krbdev/2022-April/013543.html

[Sergio Durigan Junior (sergiodj)]

I'm marking this bug as Triaged and subscribing ubuntu-server to it just to follow our triaging procedure.