From 034d49064e54990823aa6a55383fe87d381e736c Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Thu, 31 Oct 2019 11:25:56 +0100
Subject: Restore support of 'configure --enable-x11' with macOS 10.15 Catalina

---
 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index ff8fcd8b3..f333f255d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -92,7 +92,7 @@ case $host_os in
 		OPTIM="-U__APPLE__ $OPTIM"
     		macosversion=`sw_vers -productVersion | cut -d. -f2`
 		if  test $macosversion -ge "13" ; then
-	    		CXXFLAGS="$CXXFLAGS -mmacosx-version-min=10.8"
+	    		CXXFLAGS="$CXXFLAGS -mmacosx-version-min=10.9 -D_LIBCPP_HAS_THREAD_API_PTHREAD"
 		fi
 	fi
 	;;
-- 
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