From fbb2144b56625adf594f8812189b983fa66c910a Mon Sep 17 00:00:00 2001
From: Vladimir Vishnevsky <vv.os.swe@gmail.com>
Date: Tue, 8 Dec 2020 21:45:26 +0100
Subject: [PATCH] Disabling AC_LIBTOOL_DLOPEN check if building with avr-libc

The AC_LIBTOOL_DLOPEN checks were previously disabled for newlib targets.
The patch applies similar logic to avr-libc based builds.

2020-12-08 Vladimir Vishnevsky <vv.os.swe@gmail.com>

libstdc++-v3/ChangeLog:
        Disabling AC_LIBTOOL_DLOPEN check if building with avr-libc.
        * configure.ac: Skip AC_LIBTOOL_DLOPEN check if avr-libc is used.
        * configure: Regenerate.
---
 libstdc++-v3/configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libstdc++-v3/configure.ac b/libstdc++-v3/configure.ac
index cbfdf4c6bad..771814110a1 100644
--- a/libstdc++-v3/configure.ac
+++ b/libstdc++-v3/configure.ac
@@ -90,7 +90,7 @@ AC_SYS_LARGEFILE
 GLIBCXX_CONFIGURE
 
 # Libtool setup.
-if test "x${with_newlib}" != "xyes"; then
+if test "x${with_newlib}" != "xyes" && test "x${with_avrlibc}" != "xyes"; then
   AC_LIBTOOL_DLOPEN
 fi
 AM_PROG_LIBTOOL
-- 
2.17.1