diff --git a/Documentation/.gitignore b/Documentation/.gitignore
index a48448d..649df89 100644
--- a/Documentation/.gitignore
+++ b/Documentation/.gitignore
@@ -15,3 +15,5 @@
 GIT-ASCIIDOCFLAGS
 /.build/
 /GIT-EXCLUDED-PROGRAMS
+/asciidoc.conf
+/asciidoctor-extensions.rb
diff --git a/Documentation/Makefile b/Documentation/Makefile
index 0f55baa..9371f29 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -1,6 +1,8 @@
 # Import tree-wide shared Makefile behavior and libraries
 include ../shared.mak
 
+.PHONY: FORCE
+
 # Guard against environment variables
 MAN1_TXT =
 MAN5_TXT =
@@ -148,16 +150,12 @@
 man7dir = $(mandir)/man7
 # DESTDIR =
 
-GIT_DATE := $(shell git show --quiet --pretty='%as')
-
 ASCIIDOC = asciidoc
 ASCIIDOC_EXTRA =
 ASCIIDOC_HTML = xhtml11
 ASCIIDOC_DOCBOOK = docbook
 ASCIIDOC_CONF = -f asciidoc.conf
-ASCIIDOC_COMMON = $(ASCIIDOC) $(ASCIIDOC_EXTRA) $(ASCIIDOC_CONF) \
-		-amanmanual='Git Manual' -amansource='Git $(GIT_VERSION)' \
-		-arevdate='$(GIT_DATE)'
+ASCIIDOC_COMMON = $(ASCIIDOC) $(ASCIIDOC_EXTRA) $(ASCIIDOC_CONF)
 ASCIIDOC_DEPS = asciidoc.conf GIT-ASCIIDOCFLAGS
 TXT_TO_HTML = $(ASCIIDOC_COMMON) -b $(ASCIIDOC_HTML)
 TXT_TO_XML = $(ASCIIDOC_COMMON) -b $(ASCIIDOC_DOCBOOK)
@@ -210,6 +208,14 @@
 DBLATEX_COMMON =
 XMLTO_EXTRA += --skip-validation
 XMLTO_EXTRA += -x manpage.xsl
+
+asciidoctor-extensions.rb: asciidoctor-extensions.rb.in FORCE
+	$(QUIET_GEN)GIT_USER_AGENT="$(GIT_USER_AGENT)" $(SHELL_PATH) ../GIT-VERSION-GEN "$(shell pwd)/.." $< $@+
+	@if cmp $@+ $@ >/dev/null 2>&1; then $(RM) $@+; else mv $@+ $@; fi
+else
+asciidoc.conf: asciidoc.conf.in FORCE
+	$(QUIET_GEN)GIT_USER_AGENT="$(GIT_USER_AGENT)" $(SHELL_PATH) ../GIT-VERSION-GEN "$(shell pwd)/.." $< $@+
+	@if cmp $@+ $@ >/dev/null 2>&1; then $(RM) $@+; else mv $@+ $@; fi
 endif
 
 ASCIIDOC_DEPS += docinfo.html
@@ -341,6 +347,7 @@
 	$(RM) SubmittingPatches.txt
 	$(RM) $(cmds_txt) $(mergetools_txt) *.made
 	$(RM) GIT-ASCIIDOCFLAGS
+	$(RM) asciidoc.conf asciidoctor-extensions.rb
 
 docinfo.html: docinfo-html.in
 	$(QUIET_GEN)$(RM) $@ && cat $< >$@
@@ -364,7 +371,7 @@
 %.xml : %.txt $(ASCIIDOC_DEPS)
 	$(QUIET_ASCIIDOC)$(TXT_TO_XML) -d manpage -o $@ $<
 
-user-manual.xml: user-manual.txt user-manual.conf asciidoctor-extensions.rb GIT-ASCIIDOCFLAGS
+user-manual.xml: user-manual.txt user-manual.conf $(ASCIIDOC_DEPS)
 	$(QUIET_ASCIIDOC)$(TXT_TO_XML) -d book -o $@ $<
 
 technical/api-index.txt: technical/api-index-skel.txt \
@@ -373,7 +380,7 @@
 
 technical/%.html: ASCIIDOC_EXTRA += -a git-relative-html-prefix=../
 $(patsubst %,%.html,$(API_DOCS) technical/api-index $(TECH_DOCS)): %.html : %.txt \
-	asciidoc.conf GIT-ASCIIDOCFLAGS
+	$(ASCIIDOC_DEPS)
 	$(QUIET_ASCIIDOC)$(TXT_TO_HTML) $*.txt
 
 SubmittingPatches.txt: SubmittingPatches
@@ -416,13 +423,13 @@
 howto-index.txt: howto-index.sh $(HOWTO_TXT)
 	$(QUIET_GEN)'$(SHELL_PATH_SQ)' ./howto-index.sh $(sort $(HOWTO_TXT)) >$@
 
-$(patsubst %,%.html,$(ARTICLES)) : %.html : %.txt
+$(patsubst %,%.html,$(ARTICLES)) : %.html : %.txt $(ASCIIDOC_DEPS)
 	$(QUIET_ASCIIDOC)$(TXT_TO_HTML) $*.txt
 
 WEBDOC_DEST = /pub/software/scm/git/docs
 
 howto/%.html: ASCIIDOC_EXTRA += -a git-relative-html-prefix=../
-$(patsubst %.txt,%.html,$(HOWTO_TXT)): %.html : %.txt GIT-ASCIIDOCFLAGS
+$(patsubst %.txt,%.html,$(HOWTO_TXT)): %.html : %.txt $(ASCIIDOC_DEPS)
 	$(QUIET_ASCIIDOC) \
 	sed -e '1,/^$$/d' $< | \
 	$(TXT_TO_HTML) - >$@
diff --git a/Documentation/asciidoc.conf b/Documentation/asciidoc.conf.in
similarity index 96%
rename from Documentation/asciidoc.conf
rename to Documentation/asciidoc.conf.in
index f6da6d1..dbe36a5 100644
--- a/Documentation/asciidoc.conf
+++ b/Documentation/asciidoc.conf.in
@@ -21,6 +21,9 @@
 apostrophe=&#39;
 backtick=&#96;
 litdd=&#45;&#45;
+manmanual='Git Manual'
+mansource='Git @GIT_VERSION@'
+revdate='@GIT_DATE@'
 
 ifdef::backend-docbook[]
 [linkgit-inlinemacro]
diff --git a/Documentation/asciidoctor-extensions.rb b/Documentation/asciidoctor-extensions.rb.in
similarity index 92%
rename from Documentation/asciidoctor-extensions.rb
rename to Documentation/asciidoctor-extensions.rb.in
index cb24480..c4c200d 100644
--- a/Documentation/asciidoctor-extensions.rb
+++ b/Documentation/asciidoctor-extensions.rb.in
@@ -29,13 +29,9 @@
     class DocumentPostProcessor < Asciidoctor::Extensions::Postprocessor
       def process document, output
         if document.basebackend? 'docbook'
-          mansource = document.attributes['mansource']
-          manversion = document.attributes['manversion']
-          manmanual = document.attributes['manmanual']
           new_tags = "" \
-            "<refmiscinfo class=\"source\">#{mansource}</refmiscinfo>\n" \
-            "<refmiscinfo class=\"version\">#{manversion}</refmiscinfo>\n" \
-            "<refmiscinfo class=\"manual\">#{manmanual}</refmiscinfo>\n"
+            "<refmiscinfo class=\"source\">@GIT_VERSION@</refmiscinfo>\n" \
+            "<refmiscinfo class=\"manual\">Git Manual</refmiscinfo>\n"
           output = output.sub(/<\/refmeta>/, new_tags + "</refmeta>")
         end
         output
diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index a1c8146..b468778 100755
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -53,6 +53,7 @@
 
 GIT_VERSION=$(expr "$VN" : v*'\(.*\)')
 GIT_BUILT_FROM_COMMIT=$(git -C "$SOURCE_DIR" rev-parse -q --verify HEAD 2>/dev/null)
+GIT_DATE=$(git -C "$SOURCE_DIR" show --quiet --format='%as' 2>/dev/null)
 if test -z "$GIT_USER_AGENT"
 then
 	GIT_USER_AGENT="git/$GIT_VERSION"
@@ -72,6 +73,7 @@
 	-e "s|@GIT_PATCH_LEVEL@|$GIT_PATCH_LEVEL|" \
 	-e "s|@GIT_BUILT_FROM_COMMIT@|$GIT_BUILT_FROM_COMMIT|" \
 	-e "s|@GIT_USER_AGENT@|$GIT_USER_AGENT|" \
+	-e "s|@GIT_DATE@|$GIT_DATE|" \
 	"$INPUT" >"$OUTPUT"+
 
 if ! test -f "$OUTPUT" || ! cmp "$OUTPUT"+ "$OUTPUT" >/dev/null