patch-ca9a7f3b89095949e30f533e53080293f33f2f60

- patch from the upstream to fix build

From ca9a7f3b89095949e30f533e53080293f33f2f60 Mon Sep 17 00:00:00 2001
From: arvidn <arvid@libtorrent.org>
Date: Mon, 11 Jan 2021 21:14:29 +0100
Subject: [PATCH] Fix cxxflags and linkflags injection via environment
 variables

---
 ChangeLog | 2 ++
 Jamfile   | 5 ++---
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git ../../ChangeLog ../..//ChangeLog
index 01301258c8..aaefc2bc76 100644
--- ../..//ChangeLog
+++ ../..//ChangeLog
@@ -1,3 +1,5 @@
+	* Fix cxxflags and linkflags injection via environment variables
+
 1.2.12 released
 
 	* fix loading of DHT node ID from previous session on startup
diff --git ../..//Jamfile ../../Jamfile
index 21d1fc423e..44a1199484 100644
--- ../../Jamfile
+++ ../../Jamfile
@@ -745,8 +745,7 @@ local usage-requirements =
 	<toolset>msvc:<define>_SCL_SECURE_NO_DEPRECATE
 	<toolset>msvc:<define>_CRT_SECURE_NO_DEPRECATE
 
-	<cxxflags>$(CXXFLAGS)
-	<linkflags>$(LDFLAGS)
+	<cxxflags>"$(CXXFLAGS:J= )"
 	;
 
 project torrent ;
@@ -770,11 +769,11 @@ lib torrent
 
 	<conditional>@building
 	<conditional>@warnings
-	<cxxflags>$(CXXFLAGS)
 
 	<tag>@tag
 
 	$(usage-requirements)
+	<linkflags>"$(LDFLAGS:J= )"
 
 	: # default build
 	<threading>multi