From a30361f9f07cb3c4f9ad32dc83555bc593aa3311 Mon Sep 17 00:00:00 2001
From: Pieter Lexis <pieter.lexis@powerdns.com>
Date: Wed, 31 Aug 2016 16:22:57 +0200
Subject: [PATCH] Rec: support boost's fcontext in boost 1.61+

---
 pdns/mtasker_fcontext.cc       |  4 ++++
 pdns/recursordist/configure.ac | 12 +++++++++---
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/pdns/mtasker_fcontext.cc b/pdns/mtasker_fcontext.cc
index 1b2a11be26..bc37e769f1 100644
--- a/pdns/mtasker_fcontext.cc
+++ b/pdns/mtasker_fcontext.cc
@@ -23,7 +23,11 @@
 #include <exception>
 #include <cassert>
 #include <type_traits>
+#if BOOST_VERSION > 106100
+#include <boost/context/detail/fcontext.hpp>
+#else
 #include <boost/context/fcontext.hpp>
+#endif
 #include <boost/version.hpp>
 
 using boost::context::make_fcontext;
diff --git a/pdns/recursordist/configure.ac b/pdns/recursordist/configure.ac
index 19ad1133c8..1d1500f0f3 100644
--- a/pdns/recursordist/configure.ac
+++ b/pdns/recursordist/configure.ac
@@ -54,9 +54,15 @@ AC_DEFUN([PDNS_SELECT_CONTEXT_IMPL], [
       LDFLAGS="$LDFLAGS $BOOST_THREAD_LDFLAGS"
     fi
     AC_MSG_NOTICE([checking whether the Boost context library actually links...])
-    BOOST_FIND_HEADER([boost/context/fcontext.hpp], [ : ], [
-      BOOST_FIND_LIB([context], [$1], [boost/context/fcontext.hpp], [[]])
-    ])
+    if test $boost_major_version -ge 161; then
+      BOOST_FIND_HEADER([boost/context/detail/fcontext.hpp], [ : ], [
+        BOOST_FIND_LIB([context], [$1], [boost/context/detail/fcontext.hpp], [[]])
+      ])
+    else
+      BOOST_FIND_HEADER([boost/context/fcontext.hpp], [ : ], [
+        BOOST_FIND_LIB([context], [$1], [boost/context/fcontext.hpp], [[]])
+      ])
+    fi
     case $boost_cv_lib_context in
       (yes)
         AC_MSG_NOTICE([MTasker will use the Boost context library for context switching])
-- 
2.47.2