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 $@
<a href='/guix/log/THANKS?id=20e6b1d73769ab8cb09a3f9a50bc59242c23a3dc'>THANKS</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/THANKS?id=20e6b1d73769ab8cb09a3f9a50bc59242c23a3dc&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2016-07-18 06:56:29 +0200'>2016-07-18</span></td><td><a href='/guix/commit/THANKS?id=1d743e6bdda65e783087ad8b9b4289d0ef581a5a'>Thank Thomas.</a></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2015-11-23 17:48:35 +0100'>2015-11-23</span></td><td><a href='/guix/commit/THANKS?id=160b0ef3fd87c73b140f4480a521ad8c80475ab3'>Thank Jan.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2015-11-17 09:44:52 +0100'>2015-11-17</span></td><td><a href='/guix/commit/THANKS?id=87450b12744bf1f508b6fd4ee11c00af35fcc4ee'>Thank Chris.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2015-10-09 20:57:24 +0200'>2015-10-09</span></td><td><a href='/guix/commit/THANKS?id=28eb956dfeb8b759e690cf3e30dfe85788561778'>Thank Chris.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2015-09-20 22:06:48 +0200'>2015-09-20</span></td><td><a href='/guix/commit/THANKS?id=8fcac19975b163e0e5b98d27a52cb7c541bf94d9'>Thank Petter.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2015-08-27 23:34:23 +0200'>2015-08-27</span></td><td><a href='/guix/commit/THANKS?id=25ae74cffaa95cc4e509e3363f6f6525ddc21672'>Thank Eric Hanchrow.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2015-07-23 09:42:24 +0200'>2015-07-23</span></td><td><a href='/guix/commit/THANKS?id=015878fdbbfe5e30474bea229c014677e04cc27f'>Thank Anders.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2015-07-22 23:47:35 +0200'>2015-07-22</span></td><td><a href='/guix/commit/THANKS?id=0e9f9f7bc23a7e7f2390eb1bbb09f36f33cda534'>Thank Malcolm.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2015-07-22 22:56:42 +0200'>2015-07-22</span></td><td><a href='/guix/commit/THANKS?id=31ea3ebb0570c070df578d5983bdcdce117e4376'>Thank Dave.</a></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2015-07-04 12:13:01 +0300'>2015-07-04</span></td><td><a href='/guix/commit/THANKS?id=e7c48ee9519aa5cd094f3326a4caeccba072e9fd'>Clean up 'THANKS' and 'AUTHORS'.</a><span class='msg-avail'>...<span class='msg-tooltip'>* THANKS: Add Konrad Hinsen, Cyprien Nicolas, Yakkala Yagnesh Raghava
  and Alexander Shendi.  Remove Federico Beffa, Marek Benc, John
  Darrington, rekado, Cyrill Schenkel and Andy Wingo because they are
  placed in AUTHORS.  Move Amirouche Boubekki and Alex Kost to ...
* AUTHORS: ... here.  Add Arne Babenhauserheide, Ian Denhardt, Kevin
  Lemonnier, Mathieu Lirzin, Pierre-Antoine Rault and Ben Woodcroft.
  Fix some names and emails.
</span></span></td><td>Alex Kost</td></tr>
<tr><td><span title='2015-06-07 18:15:40 +0200'>2015-06-07</span></td><td><a href='/guix/commit/THANKS?id=a647e0b8eef9931a46aded4c4d71e0413cc84340'>Thank Thomas.</a></td><td>Ludovic Courtès</td></tr>