+ASCIIDOC_ARGS = -abtrfs_version=$(BTRFS_VERSION) -f asciidoc.conf
+ASCIIDOC_HTML = html
+ASCIIDOC_DOCBOOK = docbook
+ASCIIDOC_DEPS = asciidoc.conf
+endif
+ifeq (@ASCIIDOC_TOOL@,asciidoctor)
+ASCIIDOC = @ASCIIDOCTOR@
+ASCIIDOC_ARGS = -abtrfs_version=$(BTRFS_VERSION)
+ASCIIDOC_HTML = xhtml5
+ASCIIDOC_DOCBOOK = docbook45
+ASCIIDOC_DEPS =
+endif
+