[PATCH v3 2/2] docs: Integrate rustdoc generation into htmldocs

[Carlos Bilbao]

Change target `make htmldocs` to combine RST Sphinx and the
generation of Rust documentation, when support is available.

Signed-off-by: Carlos Bilbao <carlos.bilbao@xxxxxxx>
---
 Documentation/Makefile | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/Makefile b/Documentation/Makefile
index 64d44c1ecad3..f537cf558af6 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -92,6 +92,10 @@ quiet_cmd_sphinx = SPHINX  $@ --> file://$(abspath $(BUILDDIR)/$3/$4)
 	fi
 
 htmldocs:
+# If Rust support is available, add rustdoc generated contents
+ifdef CONFIG_RUST
+	$(Q)$(MAKE) rustdoc
+endif
 	@$(srctree)/scripts/sphinx-pre-install --version-check
 	@+$(foreach var,$(SPHINXDIRS),$(call loop_cmd,sphinx,html,$(var),,$(var)))
 
-- 
2.34.1