From 1a742c236b7470fff05bfb85fe74206ca8c08b18 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 13 Dec 2016 16:40:50 +0200
Subject: Use config macros from libbutl

---
 build2/b.cxx         |  4 ----
 build2/scheduler     | 10 +++-------
 build2/scheduler.cxx |  6 +++---
 build2/utility       |  1 +
 4 files changed, 7 insertions(+), 14 deletions(-)

diff --git a/build2/b.cxx b/build2/b.cxx
index f3502b0..83b6aff 100644
--- a/build2/b.cxx
+++ b/build2/b.cxx
@@ -1096,10 +1096,6 @@ main (int argc, char* argv[])
   {
     // Diagnostics has already been issued.
   }
-  catch (const system_error& e)
-  {
-    error << "unhandled system error: " << e.what ();
-  }
 
   return 1;
 }
diff --git a/build2/scheduler b/build2/scheduler
index ffb8acd..3160433 100644
--- a/build2/scheduler
+++ b/build2/scheduler
@@ -457,14 +457,10 @@ namespace build2
     // TLS cache of thread's task queue.
     //
     static
-    // Apparently Apple's Clang "temporarily disabled" C++11 thread_local
-    // until they can implement a "fast" version, which reportedly happened in
-    // XCode 8. So for now we will continue using __thread for this target.
-    //
-#if defined(__apple_build_version__) && __apple_build_version__ < 8000000
-    __thread
-#else
+#ifdef BUTL_CXX11_THREAD_LOCAL
     thread_local
+#else
+    __thread
 #endif
     task_queue* task_queue_;
 
diff --git a/build2/scheduler.cxx b/build2/scheduler.cxx
index 4619e85..3da61b9 100644
--- a/build2/scheduler.cxx
+++ b/build2/scheduler.cxx
@@ -390,10 +390,10 @@ namespace build2
     s.helpers_--;
   }
 
-#if defined(__apple_build_version__) && __apple_build_version__ < 8000000
-  __thread
+#ifdef BUTL_CXX11_THREAD_LOCAL
+    thread_local
 #else
-  thread_local
+    __thread
 #endif
   scheduler::task_queue* scheduler::task_queue_ = nullptr;
 
diff --git a/build2/utility b/build2/utility
index a0d040a..dda75f0 100644
--- a/build2/utility
+++ b/build2/utility
@@ -13,6 +13,7 @@
 #include <iterator>   // make_move_iterator()
 #include <functional> // ref(), cref()
 
+#include <butl/config>  // BUTL_CXXNN_*
 #include <butl/utility> // combine_hash(), reverse_iterate(), casecmp(),
                         // lcase(), etc
 
-- 
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