diff --git a/share/mk/doc.docbook.mk b/share/mk/doc.docbook.mk
index 3218377f5f..70a263f656 100644
--- a/share/mk/doc.docbook.mk
+++ b/share/mk/doc.docbook.mk
@@ -257,11 +257,6 @@ TAR?=		/usr/bin/tar
 TOUCH?=		/usr/bin/touch
 XARGS?=		/usr/bin/xargs
 
-TEX_CMD?=	${PREFIX}/bin/tex
-LATEX_CMD?=	${PREFIX}/bin/latex
-PDFTEX_CMD?=	${PREFIX}/bin/pdftex
-JADETEX_CMD?=	${TEX_CMD} "&jadetex"
-PDFJADETEX_CMD?=${PDFTEX_CMD} "&pdfjadetex"
 GROFF?=		groff
 TIDYOPTS?=	-wrap 90 -m -raw -preserve -f /dev/null -asxml ${TIDYFLAGS}
 HTML2TXT?=	${PREFIX}/bin/links
diff --git a/share/mk/doc.project.mk b/share/mk/doc.project.mk
index 24d22b0ce8..1640cea5ae 100644
--- a/share/mk/doc.project.mk
+++ b/share/mk/doc.project.mk
@@ -93,6 +93,11 @@ REALPATH?=	/bin/realpath
 SETENV?=	/usr/bin/env
 XSLTPROC?=	${PREFIX}/bin/xsltproc
 TIDY?=		${PREFIX}/bin/tidy
+TEX_CMD?=	${PREFIX}/bin/tex
+LATEX_CMD?=	${PREFIX}/bin/latex
+PDFTEX_CMD?=	${PREFIX}/bin/pdftex
+JADETEX_CMD?=	${TEX_CMD} "&jadetex"
+PDFJADETEX_CMD?=${PDFTEX_CMD} "&pdfjadetex"
 
 # Image processing (contains code used by the doc.<format>.mk files, so must
 # be listed first).
@@ -115,6 +120,9 @@ DOC_LOCAL_MK=	${DOC_PREFIX}/${LANGCODE}/share/mk/doc.local.mk
 .if ${DOCFORMAT} == "docbook"
 .include "doc.docbook.mk"
 .endif
+.if ${DOCFORMAT} == "slides"
+.include "doc.slides.mk"
+.endif
 .if ${DOCFORMAT} == "html"
 .include "doc.html.mk"
 .endif
diff --git a/share/mk/doc.slides.mk b/share/mk/doc.slides.mk
new file mode 100644
index 0000000000..54bdfd7b11
--- /dev/null
+++ b/share/mk/doc.slides.mk
@@ -0,0 +1,63 @@
+#
+# $FreeBSD$
+#
+# This include file <doc.slides.mk> handles building and installing of
+# DocBook Slides in the FreeBSD Documentation Project.
+#
+# Documentation using DOCFORMAT=slides is expected to be marked up
+# according to the DocBook slides DTD.
+#
+# PDF and HTML output formats are currently supported.
+#
+
+# ------------------------------------------------------------------------
+#
+# Document-specific variables
+#
+#	DOC		This should be set to the name of the SLIDES
+#			marked-up file, without the .xml suffix.
+#			
+#			It also determins the name of the output files
+#			for print output :  ${DOC}.pdf 
+#
+#	DOCBOOKSUFFIX	The suffix of your document, defaulting to .xml
+#
+
+DOCBOOKSUFFIX?=	xml
+MASTERDOC?=	${.CURDIR}/${DOC}.${DOCBOOKSUFFIX}
+
+KNOWN_FORMATS=	html pdf
+
+CSS_SHEET?=
+
+SLIDES_XSLDIR=	/usr/local/share/xsl/slides/xsl/
+SLIDES_XSLHTML= ${SLIDES_XSLDIR}xhtml/default.xsl
+SLIDES_XSLPRINT= ${SLIDES_XSLDIR}fo/plain.xsl
+
+# Loop through formats we should build.
+.for _curformat in ${FORMATS}
+_cf=${_curformat}
+
+# Create a 'bogus' doc for any format we support or not.  This is so
+# that we can fake up a target for it later on, and this target can print
+# the warning message about the unsupported format. 
+_docs+= ${DOC}.${_curformat}
+CLEANFILES+= ${DOC}.${_curformat}
+
+.if ${_cf} == "pdf"
+CLEANFILES+= ${DOC}.fo ${DOC}.aux ${DOC}.log ${DOC}.out ${DOC}.pdf texput.log
+.endif
+
+.endfor
+
+
+.MAIN: all
+
+all: ${_docs}
+
+${DOC}.html: ${SRCS}
+	${XSLTPROC} ${XSLTPROCOPTS} ${SLIDES_XSLHTML} ${.ALLSRC}
+
+${DOC}.pdf: ${SRCS}
+	${XSLTPROC} ${XSLTPROCOPTS} ${SLIDES_XSLPRINT} ${.ALLSRC} > ${.TARGET:S/.pdf$/.fo/}
+	${PDFTEX_CMD} --interaction nonstopmode "&pdfxmltex" ${.TARGET:S/.pdf$/.fo/}