Simplify allowing warnings during ARM build

RHEL8 Sphinx does not support all features used in ARM building. But
with few emitted warnings it can build the documentation fine. Simplify
warnings acceptance by allowing make doc SPHINX_W=''.

(cherry picked from commit 3db7e241d25e7c6d50c7a8a26c84e84c0f7344c7)

diff --git a/Makefile.docs b/Makefile.docs
index 4a7b8e597a056c0bfe0836afe998107d694b4c3b..13692895cd091a0c3719f96e8579ce955999bab4 100644 (file)
--- a/Makefile.docs
+++ b/Makefile.docs
@@ -2,6 +2,7 @@ SPHINX_V = $(SPHINX_V_@AM_V@)
 SPHINX_V_ = $(SPHINX_V_@AM_DEFAULT_V@)
 SPHINX_V_0 = -q
 SPHINX_V_1 = -n
+SPHINX_W = -W
 
 AM_V_SPHINX = $(AM_V_SPHINX_@AM_V@)
 AM_V_SPHINX_ = $(AM_V_SPHINX_@AM_DEFAULT_V@)
@@ -20,7 +21,7 @@ SESSION_KEY = .. |session_key| replace:: ``$(runstatedir)/session.key``
 export RST_EPILOG = $(RNDC_CONF)$(LF)$(RNDC_KEY)$(LF)$(NAMED_CONF)$(LF)$(BIND_KEYS)$(LF)$(NAMED_PID)$(LF)$(SESSION_KEY)
 
 common_SPHINXOPTS =                    \
-       -W                              \
+       $(SPHINX_W)                     \
        -c $(srcdir)                    \
        -a                              \
        $(SPHINX_V)