1 files changed, 6 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 862c2682a..50e7bb39b 100644
--- a/Makefile
+++ b/Makefile
@@ -107,6 +107,8 @@ all::
 # Define USE_STDEV below if you want git to care about the underlying device
 # change being considered an inode change from the update-cache perspective.
 #
+# Define ASCIIDOC8 if you want to format documentation with AsciiDoc 8
+#
 # Define NO_PERL_MAKEMAKER if you cannot use Makefiles generated by perl's
 # MakeMaker (e.g. using ActiveState under Cygwin).
 #
@@ -689,6 +691,10 @@ ifndef V
 endif
 endif
 
+ifdef ASCIIDOC8
+	export ASCIIDOC8
+endif
+
 # Shell quote (do not use $(call) to accommodate ancient setups);
 
 SHA1_HEADER_SQ = $(subst ','\'',$(SHA1_HEADER))