--- udis86-1.7.2.orig/m4/ax_prog_sphinx_version.m4	2025-04-24 17:16:02.224554700 -0700
+++ udis86-1.7.2/m4/ax_prog_sphinx_version.m4	2025-04-24 17:17:56.916946800 -0700
@@ -41,6 +41,9 @@
         AC_MSG_CHECKING([for sphinx version])
         changequote(<<,>>)
         sphinx_version=`$SPHINX_BUILD -h 2>&1 | $GREP "^Sphinx v" | $SED -e 's/^.* v\([0-9]*\.[0-9]*\.[0-9]*\)/\1/'`
+        if test -z "$sphinx_version"; then
+            sphinx_version=`$SPHINX_BUILD --version 2>&1 | $GREP "^sphinx-build " | $SED -e 's/^.* \([0-9]*\.[0-9]*\.[0-9]*\)/\1/'`
+        fi
         changequote([,])
         AC_MSG_RESULT($sphinx_version)