The hunk is used from https://github.com/libffi/libffi/issues/853#issuecomment-2909994482
--- a/Makefile.am
+++ b/Makefile.am
@@ -4,6 +4,10 @@ AUTOMAKE_OPTIONS = foreign subdir-objects
 
 ACLOCAL_AMFLAGS = -I m4
 
+# Alias required by AX_ENABLE_BUILDDIR / config-ml
+.PHONY: all-configured
+all-configured: all
+
 SUBDIRS = include testsuite man
 if BUILD_DOCS
 ## This hack is needed because it doesn't seem possible to make a