diff --git a/build_info/mandoc.control b/build_info/mandoc.control
new file mode 100644
index 0000000000..7d29b2f620
--- /dev/null
+++ b/build_info/mandoc.control
@@ -0,0 +1,15 @@
+Package: mandoc
+Version: @DEB_MANDOC_V@
+Priority: optional
+Section: Development
+Architecture: @DEB_ARCH@
+Maintainer: @DEB_MAINTAINER@
+Homepage: https://mandoc.bsd.lv/
+Description: BSD manpage compiler toolset
+ mandoc is a suite of tools compiling mdoc, the roff macro language
+ of choice for BSD manual pages, and man, the predominant historical
+ language for UNIX manuals. It is small, ISO C, ISC-licensed, and
+ quite fast. The main component of the toolset is the mandoc utility
+ program, based on the libmandoc validating compiler, to format
+ output for UNIX terminals (with support for wide-character locales),
+ XHTML, HTML, PostScript, and PDF.
diff --git a/build_patch/mandoc/configure.local.patch b/build_patch/mandoc/configure.local.patch
new file mode 100644
index 0000000000..015fb20756
--- /dev/null
+++ b/build_patch/mandoc/configure.local.patch
@@ -0,0 +1,63 @@
+diff --git a/configure.local b/configure.local
+new file mode 100644
+index 00000000..5a6f3891
+--- /dev/null
++++ b/configure.local
+@@ -0,0 +1,57 @@
++HAVE_FTS=1
++HAVE_FTS_COMPARE_CONST=0
++HAVE_GETLINE=1
++HAVE_GETSUBOPT=1
++HAVE_ISBLANK=1
++HAVE_LESS_T=1
++HAVE_MKDTEMP=1
++HAVE_NTOHL=1
++HAVE_O_DIRECTORY=1
++HAVE_OHASH=0
++HAVE_PATH_MAX=1
++HAVE_PLEDGE=0
++HAVE_PROGNAME=1
++HAVE_REALLOCARRAY=0
++HAVE_RECALLOCARRAY=0
++HAVE_REWB_BSD=1
++HAVE_REWB_SYSV=0
++HAVE_STRCASESTR=1
++HAVE_STRINGLIST=1
++HAVE_STRLCAT=1
++HAVE_STRLCPY=1
++HAVE_STRPTIME=1
++HAVE_STRSEP=1
++HAVE_STRTONUM=0 # Was added in iOS 14
++HAVE_ENDIAN=0
++HAVE_SYS_ENDIAN=0
++HAVE_VASPRINTF=1
++HAVE_WCHAR=1
++HAVE_NANOSLEEP=1
++LD_NANOSLEEP=""
++HAVE_RECVMSG=1
++HAVE_CMSG=1
++MANPATH_DEFAULT="/usr/share/man:/usr/local/share/man:/usr/local/man:@MEMO_PREFIX@@MEMO_SUB_PREFIX@/share/man"
++OSNAME="Procursus"
++PREFIX="@MEMO_PREFIX@@MEMO_SUB_PREFIX@"
++MANDIR="${PREFIX}/share/man"
++EXAMPLEDIR="${PREFIX}/share/doc/mandoc"
++MANM_MAN="mandoc_man"           # default is "man"
++MANM_MDOC="mandoc_mdoc"         # default is "mdoc"
++MANM_ROFF="mandoc_roff"         # default is "roff"
++MANM_EQN="mandoc_eqn"           # default is "eqn"
++MANM_TBL="mandoc_tbl"           # default is "tbl"
++BINM_MAN=mman                   # default is "man"
++BINM_APROPOS=mapropos           # default is "apropos"
++BINM_SOELIM=msoelim             # default is "soelim"
++BINM_WHATIS=mwhatis             # default is "whatis"
++BINM_CATMAN=mcatman             # default is "catman"
++BUILD_CATMAN=1
++LN="ln -sf"
++CC="@CC@"
++CFLAGS="@CFLAGS@"
++CPPFLAGS="@CPPFLAGS@"
++LDFLAGS="@LDFLAGS@"
++INSTALL_PROGRAM="${INSTALL} -m 0755"
++INSTALL_LIB="${INSTALL} -m 0644"
++INSTALL_MAN="${INSTALL} -m 0644"
++INSTALL_DATA="${INSTALL} -m 0644"
diff --git a/makefiles/mandoc.mk b/makefiles/mandoc.mk
new file mode 100644
index 0000000000..cfdb1a5500
--- /dev/null
+++ b/makefiles/mandoc.mk
@@ -0,0 +1,51 @@
+ifneq ($(PROCURSUS),1)
+$(error Use the main Makefile)
+endif
+
+SUBPROJECTS    += mandoc
+MANDOC_VERSION := 1.14.6
+DEB_MANDOC_V   ?= $(MANDOC_VERSION)
+
+mandoc-setup: setup
+	$(call DOWNLOAD_FILES,$(BUILD_SOURCE),https://mandoc.bsd.lv/snapshots/mandoc-$(MANDOC_VERSION).tar.gz)
+	$(call EXTRACT_TAR,mandoc-$(MANDOC_VERSION).tar.gz,mandoc-$(MANDOC_VERSION),mandoc)
+	$(call DO_PATCH,mandoc,mandoc,-p1)
+	sed -i -e "s|@CC@|$(CC)|" \
+		-e "s|@CFLAGS@|$(CFLAGS)|" \
+		-e "s|@CPPFLAGS@|$(CPPFLAGS)|" \
+		-e "s|@LDFLAGS@|$(LDFLAGS)|" \
+		-e "s|@MEMO_PREFIX@|$(MEMO_PREFIX)|g" \
+		-e "s|@MEMO_SUB_PREFIX@|$(MEMO_SUB_PREFIX)|g" \
+		$(BUILD_WORK)/mandoc/configure.local
+	sed -i "/int dummy;/d" $(BUILD_WORK)/mandoc/compat_*.c
+
+ifneq ($(wildcard $(BUILD_WORK)/mandoc/.build_complete),)
+mandoc:
+	@echo "Using previously built mandoc."
+else
+mandoc: mandoc-setup
+	cd $(BUILD_WORK)/mandoc && ./configure -C \
+		$(DEFAULT_CONFIGURE_FLAGS)
+	+$(MAKE) -C $(BUILD_WORK)/mandoc
+	+$(MAKE) -C $(BUILD_WORK)/mandoc install \
+		DESTDIR="$(BUILD_STAGE)/mandoc"
+	$(call AFTER_BUILD)
+endif
+
+mandoc-package: mandoc-stage
+	# mandoc.mk Package Structure
+	rm -rf $(BUILD_DIST)/mandoc
+
+	# mandoc.mk Prep mandoc
+	cp -a $(BUILD_STAGE)/mandoc $(BUILD_DIST)/mandoc
+
+	# mandoc.mk Sign
+	$(call SIGN,mandoc,general.xml)
+
+	# mandoc.mk Make .debs
+	$(call PACK,mandoc,DEB_MANDOC_V)
+
+	# mandoc.mk Build cleanup
+	rm -rf $(BUILD_DIST)/mandoc
+
+.PHONY: mandoc mandoc-package