Recent msgfmt change breaks builds on Linux

Summary

System Information

Debian Trixie x86-64 fpc 3.2.2 gettext (0.22.5-1)

Steps to reproduce

Attempt to build fpc

What is the current bug behavior?

Build fails https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1074706

What is the expected (correct) behavior?

Build should work.

Relevant logs and/or screenshots

>> /usr/bin/make -C fpcsrc/utils/fpdoc/intl install INSTALL_PREFIX=/<<PKGBUILDDIR>>/debian/tmp/usr PP=/<<PKGBUILDDIR>>/fpcsrc/compiler/ppcx64
>> make[1]: Entering directory '/<<PKGBUILDDIR>>/fpcsrc/utils/fpdoc/intl'
>> msgfmt fpdoc.de.po dwriter.de.po -o fpdoc.de.mo
>> msgfmt: input file doesn't contain a header entry with a charset specification
>> make[1]: *** [Makefile:9: de] Error 1

Possible fixes

po files now need to be UTF_8 encloded and have as a minimum, a header of

msgid ""
msgstr ""
"Content-Type: text/plain; charset=UTF-8\n"