diff --git a/gcc/treelang/ChangeLog b/gcc/treelang/ChangeLog
index 06feed972846..0f08dd69870c 100644
--- a/gcc/treelang/ChangeLog
+++ b/gcc/treelang/ChangeLog
@@ -1,3 +1,8 @@
+2007-03-01  Brooks Moses  <brooks.moses@codesourcery.com>
+
+	* Make-lang.in: Add install-pdf target as copied from
+	automake v1.10 rules.
+
 2007-02-26  Brooks Moses  <brooks.moses@codesourcery.com>
 
 	* treelang.texi: Standardize title page, remove version number
diff --git a/gcc/treelang/Make-lang.in b/gcc/treelang/Make-lang.in
index 00d9ac88a310..0a297a062754 100644
--- a/gcc/treelang/Make-lang.in
+++ b/gcc/treelang/Make-lang.in
@@ -24,8 +24,8 @@
 # Each language makefile fragment must provide the following targets:
 #
 # foo.all.cross, foo.start.encap, foo.rest.encap,
-# foo.install-common, foo.install-man, foo.install-info, foo.dvi, foo.pdf
-# foo.html, foo.uninstall,
+# foo.install-common, foo.install-man, foo.install-info, foo.install-pdf,
+# foo.info, foo.dvi, foo.pdf, foo.html, foo.uninstall,
 # foo.mostlyclean, foo.clean, foo.distclean,
 # foo.maintainer-clean, foo.stage1, foo.stage2, foo.stage3, foo.stage4
 #
@@ -160,7 +160,9 @@ treelang.srcinfo: doc/treelang.info
 
 treelang.dvi: doc/treelang.dvi
 
-treelang.pdf: doc/treelang.pdf
+TREELANG_PDFFILES = doc/treelang.pdf
+
+treelang.pdf: $(TREELANG_PDFFILES)
 
 TEXI_TREELANG_FILES = treelang/treelang.texi \
 	 $(gcc_docdir)/include/gcc-common.texi \
@@ -210,6 +212,16 @@ treelang.install.common.done:  installdirs treelang.done
 # We might not be able to build the info files
 treelang.install-info: $(DESTDIR)$(infodir)/treelang.info
 
+treelang.install-pdf: $(TREELANG_PDFFILES)
+	@$(NORMAL_INSTALL)
+	test -z "$(pdfdir)/gcc" || $(mkinstalldirs) "$(DESTDIR)$(pdfdir)/gcc"
+	@list='$(TREELANG_PDFFILES)'; for p in $$list; do \
+	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
+	  f=$(pdf__strip_dir) \
+	  echo " $(INSTALL_DATA) '$$d$$p' '$(DESTDIR)$(pdfdir)/gcc/$$f'"; \
+	  $(INSTALL_DATA) "$$d$$p" "$(DESTDIR)$(pdfdir)/gcc/$$f"; \
+	done
+
 treelang.install-man:
 
 treelang.uninstall: