docs: Makefile: document FONTS_CONF_DENY_VF= parameter

This parameter is there for some time, but it doesn't have anything
documenting it at make help.

Add some documentation, pointing to the place where one can find
more details.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Message-ID: <a84680c8f6f34e57c51829242ebc98a609af94c1.1758196090.git.mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

diff --git a/Documentation/Makefile b/Documentation/Makefile
index 0572e209305d60f26c2ba2833ae168fd7a071b12..0dbbd3f50b4f4d71cdaf3cd92508589741443104 100644 (file)
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -130,4 +130,7 @@ dochelp:
        @echo
        @echo  '  make PAPER={a4|letter} Specifies the paper size used for LaTeX/PDF output.'
        @echo
+       @echo  '  make FONTS_CONF_DENY_VF={path} sets a deny list to block variable Noto CJK fonts'
+       @echo  '  for PDF build. See tools/docs/lib/latex_fonts.py for more details'
+       @echo
        @echo  '  Default location for the generated documents is Documentation/output'