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-rw-r--r--Documentation/Makefile7
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/Makefile b/Documentation/Makefile
index d4c05ca879..1c9dfcea5a 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -108,7 +108,14 @@ endif
# use MAN_BASE_URL=http://www.kernel.org/pub/software/scm/git/docs/
# but distros may want to set it to /usr/share/doc/git-core/docs/ or
# something like that.
+#
+# As older stylesheets simply ignore this parameter, it ought to be
+# safe to set it to empty string when the base URL is not specified,
+# but unfortunately we cannot do so unconditionally because at least
+# xmlto 0.0.18 is reported to lack --stringparam option.
+ifdef MAN_BASE_URL
XMLTO_EXTRA += --stringparam man.base.url.for.relative.links=$(MAN_BASE_URL)
+endif
# If your target system uses GNU groff, it may try to render
# apostrophes as a "pretty" apostrophe using unicode. This breaks