On 03/05/2018 05:55 PM, Sérgio Basto wrote:
On Mon, 2018-01-22 at 16:24 +0100, Florian Weimer wrote:
### Disable strict symbol checks in the link editor (ld)

By default, the link editor will refuse to link shared objects which
contain undefined symbols.  In some cases (such as when a DSO is
loaded as a plugin and is expected to bind to symbols in the main
executable), undefined symbols are expected.  In this case, you can

      %undefine _strict_symbol_defs_build

to the RPM spec file to disable these strict checks.  Alternatively,
you can pass `-z undefs` to ld (written as `-Wl,-z,undefs` on the gcc
command line).  The latter needs binutils 2.29.1-12.fc28 or later.

This is also part of the build flags documentation at:


IMHO, also in https://fedoraproject.org/wiki/Changes/BINUTILS2291 or
should link to  https://src.fedoraproject.org/rpms/redhat-rpm-config/bl
ob/master/f/buildflags.md or should mention that we may use:
%undefine _strict_symbol_defs_build

The change was reverted, so this is currently not necessary.

The next change will discuss remedies.

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