https://bugs.gentoo.org/910196
https://github.com/openvswitch/ovs/commit/a45b3afbf82e1c1702d25a5097a25c45923c6fae
https://github.com/openvswitch/ovs/commit/6929485d318e08c11e8e98f7847d5cefcb36c21c
https://github.com/openvswitch/ovs/commit/93412e00e7a1f61c5eb4771d150bdbf504ff59aa

From a45b3afbf82e1c1702d25a5097a25c45923c6fae Mon Sep 17 00:00:00 2001
From: gordonwwang <gordonwwang@tencent.com>
Date: Thu, 17 Aug 2023 11:04:39 +0800
Subject: [PATCH] ovs.tmac: Fix troff warning in versions above groff-1.23.

When the compilation dependency is groff-1.23, the following message is
displayed in the compilation log, and the compilation fails:

  troff:vswitchd/ovs-vswitchd.8:1298: warning: cannot select font 'CW'
  make[1]: *** [Makefile:6761: manpage-check] Error 1

CW font was removed and and now groff warns about non-existent font:
 https://git.savannah.gnu.org/cgit/groff.git/commit/?id=d75ea8b2e283e37bd560e821fa4597065f36725f)

Fix that by replacing CW with CR.  CW supposed to be an alias of CR
anyway.

Submitted-at: https://github.com/openvswitch/ovs/pull/416
Co-authored-by: Xiaojie Chen <jackchanx@163.com>
Signed-off-by: Xiaojie Chen <jackchanx@163.com>
Signed-off-by: gordonwwang <gordonwwang@tencent.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
---
 lib/ovs.tmac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/ovs.tmac b/lib/ovs.tmac
index 5f8f20afa4a..97b6fa3df76 100644
--- a/lib/ovs.tmac
+++ b/lib/ovs.tmac
@@ -175,7 +175,7 @@
 .  nr mE \\n(.f
 .  nf
 .  nh
-.  ft CW
+.  ft CR
 ..
 .
 .

From 6929485d318e08c11e8e98f7847d5cefcb36c21c Mon Sep 17 00:00:00 2001
From: Frode Nordahl <frode.nordahl@canonical.com>
Date: Mon, 21 Aug 2023 15:53:33 +0200
Subject: [PATCH] docs: Add `nowarn` region option to tables.

Starting with groff 1.23.0 a warning is produced if the tbl
preprocessor is not run.  A side effect of enabling it is that
new warnings on table formatting is printed.

As requested during the review [0] of a series [1] attempting to
address this, this patch makes use of the `nowarn` region option
as opposed to attempting to change the formatting.

0: https://patchwork.ozlabs.org/project/openvswitch/patch/ZM00Wfa80rOb2oCA@riva.ucam.org/#3164177
1: https://patchwork.ozlabs.org/project/openvswitch/list/?series=367378&state=*

Reported-by: Lucas Nussbaum <lucas@debian.org>
Reported-at: https://bugs.debian.org/1042358
Signed-off-by: Frode Nordahl <frode.nordahl@canonical.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
---
 build-aux/extract-ofp-fields | 6 +++---
 lib/meta-flow.xml            | 1 +
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/build-aux/extract-ofp-fields b/build-aux/extract-ofp-fields
index 8766995d9ab..7a9788be968 100755
--- a/build-aux/extract-ofp-fields
+++ b/build-aux/extract-ofp-fields
@@ -578,7 +578,7 @@ def field_to_xml(field_node, f, body, summary):
     body += [""".PP
 \\fB%s Field\\fR
 .TS
-tab(;);
+tab(;),nowarn;
 l lx.
 """ % title]
 
@@ -655,7 +655,7 @@ def group_xml_to_nroff(group_node, fields):
         '.SH \"%s\"\n' % build.nroff.text_to_nroff(title.upper() + " FIELDS"),
         '.SS "Summary:"\n',
         '.TS\n',
-        'tab(;);\n',
+        'tab(;),nowarn;\n',
         'l l l l l l l.\n',
         'Name;Bytes;Mask;RW?;Prereqs;NXM/OXM Support\n',
         '\_;\_;\_;\_;\_;\_\n']
@@ -665,7 +665,7 @@ def group_xml_to_nroff(group_node, fields):
     return ''.join(content)
 
 def make_oxm_classes_xml(document):
-    s = '''tab(;);
+    s = '''tab(;),nowarn;
 l l l.
 Prefix;Vendor;Class
 \_;\_;\_
diff --git a/lib/meta-flow.xml b/lib/meta-flow.xml
index ff81fddc5e7..fe80ee930d0 100644
--- a/lib/meta-flow.xml
+++ b/lib/meta-flow.xml
@@ -3517,6 +3517,7 @@ actions=clone(load:0->NXM_OF_IN_PORT[],output:123)
     </p>
 
     <tbl>
+nowarn;
 r r r r r.
 Criteria        OpenFlow 1.0    OpenFlow 1.1    OpenFlow 1.2+   NXM
 \_      \_      \_      \_      \_
From 93412e00e7a1f61c5eb4771d150bdbf504ff59aa Mon Sep 17 00:00:00 2001
From: Colin Watson <cjwatson@ubuntu.com>
Date: Mon, 21 Aug 2023 15:53:34 +0200
Subject: [PATCH] docs: Run tbl preprocessor in manpage-check rule.

If we omit this, groff 1.23.0 warns:

  tbl preprocessor failed, or it or soelim was not run; table(s) likely
  not rendered (TE macro called with TW register undefined)

Reported-by: Lucas Nussbaum <lucas@debian.org>
Reported-at: https://bugs.debian.org/1042358
Signed-off-by: Colin Watson <cjwatson@ubuntu.com>
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
---
 Makefile.am | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index cb8076433e8..2a41e63ad90 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -368,7 +368,7 @@ ALL_LOCAL += manpage-check
 manpage-check: $(man_MANS) $(dist_man_MANS) $(noinst_man_MANS)
 	@error=false; \
 	for manpage in $?; do \
-	  LANG=en_US.UTF-8 groff -w mac -w delim -w escape -w input -w missing -w tab -T utf8 -man -p -z $$manpage >$@.tmp 2>&1; \
+	  LANG=en_US.UTF-8 groff -t -w mac -w delim -w escape -w input -w missing -w tab -T utf8 -man -p -z $$manpage >$@.tmp 2>&1; \
 	  if grep warning: $@.tmp; then error=:; fi; \
 	  rm -f $@.tmp; \
 	done; \