--- configure.ac.orig	2023-11-15 03:46:08
+++ configure.ac	2024-01-01 12:21:23
@@ -123,7 +123,7 @@
 fi
 AC_SUBST([AR])
 
-AC_PATH_PROGS([SPHINXBUILD], [sphinx-build])
+AC_PATH_PROGS([SPHINXBUILD], [sphinx-build-%BRANCH%])
 AC_SUBST([SPHINXBUILD])
 AM_CONDITIONAL([HAVE_SPHINXBUILD], [ test "x$SPHINXBUILD" != "x" ])