[gcc r13-4419] d: Update recipes for building html and pdf documentation

[Iain Buclaw <ibuclaw@gcc.gnu.org>]

https://gcc.gnu.org/g:7870100db7b755e5916144e569e80cfa19e361eb

commit r13-4419-g7870100db7b755e5916144e569e80cfa19e361eb
Author: Iain Buclaw <ibuclaw@gdcproject.org>
Date:   Wed Nov 30 18:01:25 2022 +0100

    d: Update recipes for building html and pdf documentation
    
    gcc/d/ChangeLog:
    
            * Make-lang.in: Only include doc/include when building documentation.
            (d.html): Rename html directory to $(build_htmldir)/gdc.

Diff:
---
 gcc/d/Make-lang.in | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/gcc/d/Make-lang.in b/gcc/d/Make-lang.in
index 984b1d63dcb..144d5b88483 100644
--- a/gcc/d/Make-lang.in
+++ b/gcc/d/Make-lang.in
@@ -252,16 +252,15 @@ doc/gdc.info: $(D_TEXI_FILES)
 	else true; fi
 
 doc/gdc.dvi: $(D_TEXI_FILES)
-	$(TEXI2DVI) -I $(abs_docdir) -I $(abs_docdir)/include -o $@ $<
+	$(TEXI2DVI) -I $(abs_docdir)/include -o $@ $<
 
 doc/gdc.pdf: $(D_TEXI_FILES)
-	$(TEXI2PDF) -I $(abs_docdir) -I $(abs_docdir)/include -o $@ $<
+	$(TEXI2PDF) -I $(abs_docdir)/include -o $@ $<
 
-$(build_htmldir)/d/index.html: $(D_TEXI_FILES)
+$(build_htmldir)/gdc/index.html: $(D_TEXI_FILES)
 	$(mkinstalldirs) $(@D)
 	rm -f $(@D)/*
-	$(TEXI2HTML) -I $(gcc_docdir) -I $(gcc_docdir)/include \
-		-I $(srcdir)/d -o $(@D) $<
+	$(TEXI2HTML) -I $(gcc_docdir)/include -I $(srcdir)/d -o $(@D) $<
 
 .INTERMEDIATE: gdc.pod
 
@@ -276,7 +275,7 @@ d.rest.encap:
 d.info: doc/gdc.info
 d.dvi: doc/gdc.dvi
 d.pdf: doc/gdc.pdf
-d.html: $(build_htmldir)/d/index.html
+d.html: $(build_htmldir)/gdc/index.html
 d.srcinfo: doc/gdc.info
 	-cp -p $^ $(srcdir)/doc
 d.srcextra:
@@ -340,10 +339,10 @@ d.install-dvi: doc/gdc.dvi
 	  $(INSTALL_DATA) "$$d$$p" "$(DESTDIR)$(dvidir)/gcc/$$f"; \
 	done
 
-d.install-html: $(build_htmldir)/d
+d.install-html: $(build_htmldir)/gdc
 	@$(NORMAL_INSTALL)
 	test -z "$(htmldir)" || $(mkinstalldirs) "$(DESTDIR)$(htmldir)"
-	@for p in $(build_htmldir)/d; do \
+	@for p in $(build_htmldir)/gdc; do \
 	  if test -f "$$p" || test -d "$$p"; then d=""; else d="$(srcdir)/"; fi; \
 	  f=$(html__strip_dir) \
 	  if test -d "$$d$$p"; then \