squashfs-tools-4.3-16.fc28.x86_64 linked /usr/sbin/mksquashfs and /usr/sbin/unsquashfs without the standard Fedora linker flags (LDFLAGS) from redhat-rpm-config. Looking at the build log, there is no LDFLAGS injection at all. See https://src.fedoraproject.org/rpms/redhat-rpm-config/blob/master/f/buildflags.md for information on RPM macros and environment variables provided by the build environment.
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Thanks for catching this. I'll have fixes for f29 and f30 tonight. Probably rawhide too, though I had started some stuff there to get some other changes and may not go back or forward enough to get this fix in tonight.
squashfs-tools-4.3-20.fc30 has been submitted as an update to Fedora 30. https://bodhi.fedoraproject.org/updates/FEDORA-2019-accdc3a5f3
squashfs-tools-4.3-20.fc29 has been submitted as an update to Fedora 29. https://bodhi.fedoraproject.org/updates/FEDORA-2019-852102b3ba
squashfs-tools-4.3-20.fc30 has been pushed to the Fedora 30 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2019-accdc3a5f3
squashfs-tools-4.3-20.fc29 has been pushed to the Fedora 29 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2019-852102b3ba
squashfs-tools-4.3-20.fc30 has been pushed to the Fedora 30 stable repository. If problems still persist, please make note of it in this bug report.
squashfs-tools-4.3-20.fc29 has been pushed to the Fedora 29 stable repository. If problems still persist, please make note of it in this bug report.