Add groff recipe.

wip/groff/Makefile

@@ -0,0 +1,30 @@
+name = groff
+version = 1.22.4
+pkgrel = 0
+pkgdesc = "GNU troff text-formatting system"
+url = "https://www.gnu.org/software/groff/groff.html"
+arch = "all"
+license = "GPL-3.0-or-later"
+build-dependencies = perl bison zlib-dev texinfo
+URL = https://ftp.gnu.org/gnu/$(name)/$(name)-$(version).tar.gz
+
+CONFIGURE_OPTIONS_USER = --without-x --disable-rpath
+
+SYSCONF ?= ../../
+include $(SYSCONF)/package.mk
+
+post_fake_root_install:
+	rm -rf "$(pkg_fake_root_dir)"/$(PREFIX)/lib/charset.alias
+	rmdir -p "$(pkg_fake_root_dir)"/$(PREFIX)/lib 2>/dev/null || true
+
+	for f in man mdoc; do \
+		cat site.tmac >> $(pkg_fake_root_dir)/$(SHAREDIR)/groff/site-tmac/$${f}.local ; \
+	done
+
+	# Prevent conflict with mandoc-doc
+	rm -f "$(pkg_fake_root_dir)"/$(MANDIR)/man1/soelim.1 \
+		"$(pkg_fake_root_dir)"/$(MANDIR)/man7/roff.7
+
+pre_build:
+	@# work around parallel build issue
+	$(Q)cd $(bdir) ; make arch/misc && make

wip/groff/site.tmac

@@ -0,0 +1,17 @@
+.
+.if n \{\
+.  \" Character translations for non-keyboard
+.  \" characters - to make them searchable
+.  if '\*[.T]'utf8' \{\
+.    char \- \N'45'
+.    char - \N'45'
+.    char ' \N'39'
+.    char \' \N'39'
+.  \}
+.
+.  \" Shut off SGR by default (groff colors)
+.  \" Require GROFF_SGR envvar defined to turn it on
+.  if '\V[GROFF_SGR]'' \
+.    output x X tty: sgr 0
+.\}
+