Precontent phase. The phase is added instead of the try_files phase. Unlike the old phase, the new one supports registering multiple handlers. The try_files implementation is moved to a separate ngx_http_try_files_module, which now registers a precontent phase handler.

# Copyright (C) Igor Sysoev
# Copyright (C) Nginx, Inc.


cat << END >> $NGX_AUTO_CONFIG_H

#ifndef $have
#define $have  $value
#endif

END