Now that we don't have to support CentOS 7's python2-docutils, we can use the rst2html5 tool instead, which generates HTML5 output instead of HTML4 output. This matches what we used for the original HTML docs since commit b1c81567c7172bc9dcd701cf46ea3f87725d62c7 Author: Daniel P. Berrangé <berrange(a)redhat.com&gt; Date: Wed Jul 26 18:01:25 2017 +0100 docs: switch to using HTML5 doctype declaration Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com&gt; --- m4/virt-external-programs.m4 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/m4/virt-external-programs.m4 b/m4/virt-external-programs.m4 index ed634a4c73..a23c69d54b 100644 --- a/m4/virt-external-programs.m4 +++ b/m4/virt-external-programs.m4 @@ -33,7 +33,7 @@ AC_DEFUN([LIBVIRT_CHECK_EXTERNAL_PROGRAMS], [ then AC_MSG_ERROR("xsltproc is required to build libvirt") fi - AC_PATH_PROGS([RST2HTML], [rst2html rst2html.py rst2html-3], []) + AC_PATH_PROGS([RST2HTML], [rst2html5 rst2html5.py rst2html5-3], []) if test -z "$RST2HTML" then AC_MSG_ERROR("rst2html is required to build libvirt") -- 2.23.0