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-rw-r--r--Makefile4
1 files changed, 4 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index f88ed3e14d..7974717419 100644
--- a/Makefile
+++ b/Makefile
@@ -142,6 +142,10 @@ all::
#
# Define DOCBOOK_XSL_172 if you want to format man pages with DocBook XSL v1.72.
#
+# Define GNU_ROFF if your target system uses GNU groff. This forces
+# apostrophes to be ASCII so that cut&pasting examples to the shell
+# will work.
+#
# Define NO_PERL_MAKEMAKER if you cannot use Makefiles generated by perl's
# MakeMaker (e.g. using ActiveState under Cygwin).
#