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-rw-r--r--Makefile6
1 files changed, 6 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 108d3731fc..8e4081e061 100644
--- a/Makefile
+++ b/Makefile
@@ -250,6 +250,12 @@ all::
# apostrophes to be ASCII so that cut&pasting examples to the shell
# will work.
#
+# Define USE_ASCIIDOCTOR to use Asciidoctor instead of AsciiDoc to build the
+# documentation.
+#
+# Define ASCIIDOCTOR_EXTENSIONS_LAB to point to the location of the Asciidoctor
+# Extensions Lab if you have it available.
+#
# Define PERL_PATH to the path of your Perl binary (usually /usr/bin/perl).
#
# Define NO_PERL_MAKEMAKER if you cannot use Makefiles generated by perl's