From bcb0e3872b50bbbd669285fe9b6156bac42a2690 Mon Sep 17 00:00:00 2001
From: Timo Rothenpieler <btbn@btbn.de>
Date: Mon, 6 Oct 2014 21:36:13 +0200
Subject: FindThreads: introduce an imported target to link to

This not only holds the library, but can also hold compiler flags needed, e.g.
the -pthread flag preferred by gcc on some platforms. There was no clean way
to get that compiler flag from the module until now.
---
 Modules/FindThreads.cmake | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Modules/FindThreads.cmake b/Modules/FindThreads.cmake
index aac9c0e..108b56f 100644
--- a/Modules/FindThreads.cmake
+++ b/Modules/FindThreads.cmake
@@ -14,6 +14,12 @@
 #   CMAKE_USE_PTHREADS_INIT    - are we using pthreads
 #   CMAKE_HP_PTHREADS_INIT     - are we using hp pthreads
 #
+# The following import target is created
+#
+# ::
+#
+#   Threads::Threads
+#
 # For systems with multiple thread libraries, caller can set
 #
 # ::
@@ -178,3 +184,15 @@ endif()
 set(CMAKE_REQUIRED_QUIET ${CMAKE_REQUIRED_QUIET_SAVE})
 include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
 FIND_PACKAGE_HANDLE_STANDARD_ARGS(Threads DEFAULT_MSG Threads_FOUND)
+
+if(THREADS_FOUND AND NOT TARGET Threads::Threads)
+  add_library(Threads::Threads INTERFACE IMPORTED)
+
+  if(THREADS_HAVE_PTHREAD_ARG)
+    set_property(TARGET Threads::Threads PROPERTY INTERFACE_COMPILE_OPTIONS "-pthread")
+  endif()
+
+  if(CMAKE_THREAD_LIBS_INIT)
+    set_property(TARGET Threads::Threads PROPERTY INTERFACE_LINK_LIBRARIES "${CMAKE_THREAD_LIBS_INIT}")
+  endif()
+endif()
-- 
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