build: Fix internal docs generation in VPATH builds

diff --git a/docs/Makefile.am b/docs/Makefile.am
index ce0b391c7ebfd9173d50f79e1ab9404da555f235..43c54f623f47c3c1a7dad8b841ac47d35fdb6322 100644 (file)
--- a/docs/Makefile.am
+++ b/docs/Makefile.am
@@ -117,6 +117,7 @@ todo:
 internals/%.html.tmp: internals/%.html.in subsite.xsl page.xsl sitemap.html.in
        @if [ -x $(XSLTPROC) ] ; then \
          echo "Generating $@"; \
+         $(MKDIR_P) "$(builddir)/internals"; \
          name=`echo $@ | sed -e 's/.tmp//'`; \
          $(XSLTPROC) --stringparam pagename $$name --nonet --html \
            $(top_srcdir)/docs/subsite.xsl $< > $@ \