Documentation: add top level 'make help' output for Sphinx

While there's slight overlap with the DocBook help now, this can stay
intact when the DocBook help goes away.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>

3 files changed, 12 insertions, 2 deletions

diff --git a/Documentation/DocBook/Makefile b/Documentation/DocBook/Makefile
index e0c7e1e0590b..496d4295ec38 100644
--- a/Documentation/DocBook/Makefile
+++ b/Documentation/DocBook/Makefile
@@ -218,7 +218,7 @@ silent_gen_xml = :
 ###
 # Help targets as used by the top-level makefile
 dochelp:
-        @echo  ' Linux kernel internal documentation in different formats:'
+        @echo  ' Linux kernel internal documentation in different formats (DocBook):'
         @echo  '  htmldocs        - HTML'
         @echo  '  pdfdocs         - PDF'
         @echo  '  psdocs          - Postscript'
@@ -227,7 +227,7 @@ dochelp:
         @echo  '  installmandocs  - install man pages generated by mandocs'
         @echo  '  cleandocs       - clean all generated DocBook files'
         @echo
-        @echo  'make DOCBOOKS="s1.xml s2.xml" [target] Generate only docs s1.xml s2.xml'
+        @echo  '  make DOCBOOKS="s1.xml s2.xml" [target] Generate only docs s1.xml s2.xml'
         @echo  '  valid values for DOCBOOKS are: $(DOCBOOKS)'
 
 
diff --git a/Documentation/Makefile.sphinx b/Documentation/Makefile.sphinx
index addf32309bc3..810c11f0d37f 100644
--- a/Documentation/Makefile.sphinx
+++ b/Documentation/Makefile.sphinx
@@ -60,4 +60,12 @@ installmandocs:
 cleandocs:
         $(Q)rm -rf $(BUILDDIR)
 
+dochelp:
+        @echo  ' Linux kernel internal documentation in different formats (Sphinx):'
+        @echo  '  htmldocs        - HTML'
+        @echo  '  pdfdocs         - PDF'
+        @echo  '  epubdocs        - EPUB'
+        @echo  '  xmldocs         - XML'
+        @echo  '  cleandocs       - clean all generated files'
+
 endif # HAVE_SPHINX
diff --git a/Makefile b/Makefile
index 8908a51b895a..f7f393c40886 100644
--- a/Makefile
+++ b/Makefile
@@ -1364,6 +1364,8 @@ help:
         @$(MAKE) $(build)=$(package-dir) help
         @echo  ''
         @echo  'Documentation targets:'
+        @$(MAKE) -f $(srctree)/Documentation/Makefile.sphinx dochelp
+        @echo  ''
         @$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp
         @echo  ''
         @echo  'Architecture specific targets ($(SRCARCH)):'