diff --git a/acinclude.m4 b/acinclude.m4
index 86706761ca5..e9737e9d80a 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -1699,9 +1699,13 @@ AC_DEFUN([PHP_SETUP_ICONV], [
   test -d ext || mkdir ext
   test -d ext/iconv || mkdir ext/iconv
 
+  echo > ext/iconv/php_have_bsd_iconv.h
+  echo > ext/iconv/php_have_glibc_iconv.h
   echo > ext/iconv/php_have_libiconv.h
   echo > ext/iconv/php_have_iconv.h
   echo > ext/iconv/php_php_iconv_impl.h
+  echo > ext/iconv/php_php_iconv_h_path.h
+  echo > ext/iconv/php_iconv_supports_errno.h
 
   dnl
   dnl Check libc first if no path is provided in --with-iconv