diff --git a/Makefile.frag b/Makefile.frag
new file mode 100644
index 0000000..88924e8
--- /dev/null
+++ b/Makefile.frag
@@ -0,0 +1,9 @@
+# Only when building statically into PHP (i.e. not via phpize)
+ifeq ($(PHP_AST_SHARED),no)
+
+# Ensure Zend’s generated sources are ready before building ast
+$(builddir)/ast.lo: \
+  $(top_srcdir)/Zend/zend_language_parser.c \
+  $(top_srcdir)/Zend/zend_language_scanner.c
+
+endif
diff --git a/config.m4 b/config.m4
index fb7a360..faf9cfe 100644
--- a/config.m4
+++ b/config.m4
@@ -5,4 +5,5 @@ PHP_ARG_ENABLE(ast, whether to enable ast support,
 
 if test "$PHP_AST" != "no"; then
   PHP_NEW_EXTENSION(ast, ast.c ast_data.c, $ext_shared)
+  PHP_ADD_MAKEFILE_FRAGMENT
 fi