Do not try to regenerate po files; use the reference files that are packaged
in the tarball.

--- a/Makefile.in	2010-06-30 17:02:28.000000000 -0500
+++ b/Makefile.in	2014-08-16 00:22:38.447050269 -0500
@@ -1022,15 +1022,7 @@
 
 i18n/en.thl i18n/: $(po_document_dir)/po_document/$(PACKAGE)_document.pot
 	$(MKDIR_P) i18n
-	if test '$(USE_NLS)' = 'yes'; then \
-	  for file in "$(srcdir)/$(po_document_dir)/po_document/"*".po"; do lang=`basename "$$file" .po | sed 's/\..*//'`; \
-		test "$$lang" = 'en' && continue; \
-		msgexec -i "$$file" "$(srcdir)/gettext_to_separated.pl" | "$(srcdir)/separated_to_hash.pl" $$lang > i18n/$$lang.thl; \
-	  done; \
-	  msgexec -i $< "$(srcdir)/gettext_to_separated.pl" | "$(srcdir)/separated_to_hash.pl" en > i18n/en.thl; \
-	else \
-	  cp -p i18n_ref/*.thl i18n; \
-	fi
+	cp -p i18n_ref/*.thl i18n
 
 i18n_ref:
 	$(MKDIR_P) i18n_ref

Have install-sh install .mo files locally for in-source tests, so that msgfmt
is not needed.

--- a/Makefile.in	2010-06-30 17:02:28.000000000 -0500
+++ b/Makefile.in	2014-08-16 00:22:38.447050269 -0500
@@ -1052,19 +1044,8 @@
 # update the po files, and install locally the .mo files for the in
 # source tests
 check-local: makeinfo.pl texi2any.pl
-	if test '$(USE_NLS)' = 'yes'; then \
-	  cd $(po_document_dir)/po_document && $(MAKE) $(AM_MAKEFLAGS) update-po; \
-	fi
-	rm -rf locales
-	for file in "$(srcdir)/$(po_document_dir)/po_document/"*.po; do \
-	  basename=`basename "$$file" .po` ; \
-	  $(MKDIR_P) "locales/$$basename/LC_MESSAGES/" ; \
-	  if test '$(USE_NLS)' = 'yes'; then \
-	    $(MSGFMT) "$$file" -o "locales/$$basename/LC_MESSAGES/texi2html_document.mo" ; \
-	  else \
-	    cp -p "$(srcdir)/$(po_document_dir)/po_document/$$basename.mo" "locales/$$basename/LC_MESSAGES/texi2html_document.mo" ; \
-	  fi; \
-	done
+	$(MAKE) -C po_document localedir="$(abs_srcdir)/locales" install-data
+	$(MAKE) -C po_messages localedir="$(abs_srcdir)/locales" install-data
 
 makeinfo.pl texi2any.pl:
 	-$(LN_S) $(srcdir)/texi2html.pl $@
ass='path'>path: <a href='/guix/log/?id=2ccb9e002d9f97412be3c9c0cd80f5990e5ec3e9'>root</a>/<a href='/guix/log/gnu?id=2ccb9e002d9f97412be3c9c0cd80f5990e5ec3e9'>gnu</a>/<a href='/guix/log/gnu/packages?id=2ccb9e002d9f97412be3c9c0cd80f5990e5ec3e9'>packages</a>/<a href='/guix/log/gnu/packages/gd.scm?id=2ccb9e002d9f97412be3c9c0cd80f5990e5ec3e9'>gd.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/packages/gd.scm?id=2ccb9e002d9f97412be3c9c0cd80f5990e5ec3e9&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2023-02-25 00:00:32 +0100'>2023-02-25</span></td><td><a href='/guix/commit/gnu/packages/gd.scm?id=5c4240442cd39fd5d279e080184f0ee2fb1c8af4'>gnu: perl-gd: Use gexps.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2023-02-25 00:00:32 +0100'>2023-02-25</span></td><td><a href='/guix/commit/gnu/packages/gd.scm?id=279b0122b63502f1d5ea027025dcc4dd4180e478'>gnu: perl-gd: Remove input labels.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>