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-rw-r--r--docs/docbook/configure.in2
1 files changed, 2 insertions, 0 deletions
diff --git a/docs/docbook/configure.in b/docs/docbook/configure.in
index 6775e6db94..80368d8390 100644
--- a/docs/docbook/configure.in
+++ b/docs/docbook/configure.in
@@ -9,6 +9,8 @@ if test "x$PDFLATEX" = x; then
AC_MSG_ERROR("pdflatex is required")
fi
+AC_PATH_PROG(XMLTO, xmlto)
+
DOC_BUILD_DATE=`date '+%d-%m-%Y'`
AC_SUBST(DOC_BUILD_DATE)