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-rw-r--r--contrib/subtree/Makefile26
1 files changed, 19 insertions, 7 deletions
diff --git a/contrib/subtree/Makefile b/contrib/subtree/Makefile
index 6afa9aafdf..5c6cc4ab2c 100644
--- a/contrib/subtree/Makefile
+++ b/contrib/subtree/Makefile
@@ -19,15 +19,27 @@ htmldir ?= $(prefix)/share/doc/git-doc
INSTALL ?= install
RM ?= rm -f
-ASCIIDOC = asciidoc
-XMLTO = xmlto
+ASCIIDOC = asciidoc
+ASCIIDOC_CONF = -f ../../Documentation/asciidoc.conf
+ASCIIDOC_HTML = xhtml11
+ASCIIDOC_DOCBOOK = docbook
+ASCIIDOC_EXTRA =
+XMLTO = xmlto
+
+ifdef USE_ASCIIDOCTOR
+ASCIIDOC = asciidoctor
+ASCIIDOC_CONF =
+ASCIIDOC_HTML = xhtml5
+ASCIIDOC_DOCBOOK = docbook45
+ASCIIDOC_EXTRA += -I../../Documentation -rasciidoctor-extensions
+ASCIIDOC_EXTRA += -alitdd='&\#x2d;&\#x2d;'
+endif
ifndef SHELL_PATH
SHELL_PATH = /bin/sh
endif
SHELL_PATH_SQ = $(subst ','\'',$(SHELL_PATH))
-ASCIIDOC_CONF = ../../Documentation/asciidoc.conf
MANPAGE_XSL = ../../Documentation/manpage-normal.xsl
GIT_SUBTREE_SH := git-subtree.sh
@@ -65,12 +77,12 @@ $(GIT_SUBTREE_DOC): $(GIT_SUBTREE_XML)
$(XMLTO) -m $(MANPAGE_XSL) man $^
$(GIT_SUBTREE_XML): $(GIT_SUBTREE_TXT)
- $(ASCIIDOC) -b docbook -d manpage -f $(ASCIIDOC_CONF) \
- -agit_version=$(GIT_VERSION) $^
+ $(ASCIIDOC) -b $(ASCIIDOC_DOCBOOK) -d manpage $(ASCIIDOC_CONF) \
+ -agit_version=$(GIT_VERSION) $(ASCIIDOC_EXTRA) $^
$(GIT_SUBTREE_HTML): $(GIT_SUBTREE_TXT)
- $(ASCIIDOC) -b xhtml11 -d manpage -f $(ASCIIDOC_CONF) \
- -agit_version=$(GIT_VERSION) $^
+ $(ASCIIDOC) -b $(ASCIIDOC_HTML) -d manpage $(ASCIIDOC_CONF) \
+ -agit_version=$(GIT_VERSION) $(ASCIIDOC_EXTRA) $^
$(GIT_SUBTREE_TEST): $(GIT_SUBTREE)
cp $< $@