I found no elf2flt, uClinux, XFLAT or GPL text in the five files. elf2flt was a part of uClinux: https://github.com/uclinux-dev/elf2flt/blob/main/elf2flt.c . elf2flt was a component of the FLAT binary format (hence the names XFLAT and NXFLAT). It was GPL licensed:
Line 34: * This is Free Software, under the GNU Public Licence v2 or greater. At one point uClinux was merged into the Linux mainline. I am not sure what happened to the FLAT tools since then. The FLAT tools were contemporary with the XFLAT tools. Both implemented shared libraries in uClinux without an MMU, but were based on a different design. They are BSD-3-Clause, copyright you and Cadenux. Could you state on the PR that both grant them to the ASF under Apache-2.0? Your ICLA covers your own copyright; the Cadenux line is the part that needs you on the record. I would then relicense the headers to match binfmt/libnxflat. Done!
