From ffc89d1f21258553c0087b774a9ea1ce84139d4f Mon Sep 17 00:00:00 2001
From: fanquake <fanquake@gmail.com>
Date: Mon, 28 Jun 2021 16:00:06 +0800
Subject: build: add support for std::filesystem

Add a macro to check if linking with -lstdc++fs or -lc++fs is required.
---
 configure.ac | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index bef3973996..5db104f0d6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -83,6 +83,9 @@ AX_CXX_COMPILE_STDCXX([17], [noext], [mandatory])
 dnl Check if -latomic is required for <std::atomic>
 CHECK_ATOMIC
 
+dnl check if additional link flags are required for std::filesystem
+CHECK_FILESYSTEM
+
 dnl Unless the user specified OBJCXX, force it to be the same as CXX. This ensures
 dnl that we get the same -std flags for both.
 m4_ifdef([AC_PROG_OBJCXX],[
-- 
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