[gcc r14-6712] ada: Add makefile targets for building/installing html doc

[Marc Poulhi?s]

https://gcc.gnu.org/g:41f1b570acdea71ab107998b25a5f319a31273cd

commit r14-6712-g41f1b570acdea71ab107998b25a5f319a31273cd
Author: Marc Poulhiès <poulhies@adacore.com>
Date:   Tue Nov 21 14:53:05 2023 +0100

    ada: Add makefile targets for building/installing html doc
    
    Add the ada.html and ada.install-html targets so that we can build the
    html with `make html`.
    
    gcc/ada/
    
            * gcc-interface/Make-lang.in (ada.html, ada.install-html): Add.

Diff:
---
 gcc/ada/gcc-interface/Make-lang.in | 35 +++++++++++++++++++++++++++++++----
 1 file changed, 31 insertions(+), 4 deletions(-)

diff --git a/gcc/ada/gcc-interface/Make-lang.in b/gcc/ada/gcc-interface/Make-lang.in
index 97830ee37f9..2cf0c6d0977 100644
--- a/gcc/ada/gcc-interface/Make-lang.in
+++ b/gcc/ada/gcc-interface/Make-lang.in
@@ -889,10 +889,6 @@ ada.install-pdf: $(ADA_PDFFILES)
 	  $(INSTALL_DATA) "$$d$$p" "$(DESTDIR)$(pdfdir)/gcc/$$f"; \
 	done
 
-ada.html:
-
-ada.install-html:
-
 doc/gnat_ugn.dvi: ada/gnat_ugn.texi \
 	$(gcc_docdir)/include/fdl.texi	\
 	$(gcc_docdir)/include/gcc-common.texi gcc-vers.texi
@@ -917,6 +913,37 @@ doc/gnat_rm.pdf: ada/gnat_rm.texi $(gcc_docdir)/include/fdl.texi	\
 doc/gnat-style.pdf: ada/gnat-style.texi $(gcc_docdir)/include/fdl.texi
 	$(TEXI2PDF) -c -I $(abs_docdir)/include -o $@ $<
 
+ADA_TEXI_FILES = \
+       ada/gnat_rm.texi \
+       ada/gnat_ugn.texi \
+       $(gcc_docdir)/include/fdl.texi \
+       $(gcc_docdir)/include/gpl_v3.texi \
+       $(gcc_docdir)/include/gcc-common.texi \
+       gcc-vers.texi
+
+$(build_htmldir)/ada/index.html: $(ADA_TEXI_FILES)
+	$(mkinstalldirs) $(@D)
+	rm -f $(@D)/*
+	$(TEXI2HTML) -I $(gcc_docdir)/include -I $(srcdir)/ada -o $(@D) $<
+
+ada.html: $(build_htmldir)/ada/index.html
+ada.install-html: $(build_htmldir)/ada
+	@$(NORMAL_INSTALL)
+	test -z "$(htmldir)" || $(mkinstalldirs) "$(DESTDIR)$(htmldir)"
+	@for p in $(build_htmldir)/ada; do \
+	  if test -f "$$p" || test -d "$$p"; then d=""; else d="$(srcdir)/"; fi; \
+	  f=$(html__strip_dir) \
+	  if test -d "$$d$$p"; then \
+	    echo " $(mkinstalldirs) '$(DESTDIR)$(htmldir)/$$f'"; \
+	    $(mkinstalldirs) "$(DESTDIR)$(htmldir)/$$f" || exit 1; \
+	    echo " $(INSTALL_DATA) '$$d$$p'/* '$(DESTDIR)$(htmldir)/$$f'"; \
+	    $(INSTALL_DATA) "$$d$$p"/* "$(DESTDIR)$(htmldir)/$$f"; \
+	  else \
+	    echo " $(INSTALL_DATA) '$$d$$p' '$(DESTDIR)$(htmldir)/$$f'"; \
+	    $(INSTALL_DATA) "$$d$$p" "$(DESTDIR)$(htmldir)/$$f"; \
+	  fi; \
+	done
+
 # Install hooks:
 # gnat1 is installed elsewhere as part of $(COMPILERS).