Documentation: adjust to AsciiDoc 8

diff --git a/Makefile b/Makefile
index 862c2682aa39b424bb3349e4e885409c94a0df42..50e7bb39b5d661d6339afa53e57674146ee45176 100644 (file)
--- 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))