# HG changeset patch
# User Alpar Juttner <alpar@cs.elte.hu>
# Date 2012-01-29 22:33:14
# Node ID 48e17328c1551cb8196973d6056a04e40e5d624a
# Parent  43a91b33f3747428f70be1da8dbdf9da4edb3d2a

LEMON_THREADING cmake variable for choosing threading lib (#223)

diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -115,8 +115,26 @@
 SET(LEMON_HAVE_LONG_LONG ${HAVE_LONG_LONG})
 
 INCLUDE(FindThreads)
-SET(LEMON_USE_PTHREAD ${CMAKE_USE_PTHREADS_INIT})
-SET(LEMON_USE_WIN32_THREADS ${CMAKE_USE_WIN32_THREADS_INIT})
+
+IF(NOT LEMON_THREADING)
+  IF(CMAKE_USE_PTHREADS_INIT)
+    SET(LEMON_THREADING "Pthread")
+  ELSEIF(CMAKE_USE_WIN32_THREADS_INIT)
+    SET(LEMON_THREADING "Win32")
+  ELSE()
+    SET(LEMON_THREADING "None")
+  ENDIF()
+ENDIF()
+
+SET( LEMON_THREADING "${LEMON_THREADING}" CACHE STRING
+  "Choose the threading library, options are: Pthread Win32 None."
+  FORCE )
+
+IF(LEMON_THREADING STREQUAL "Pthread")
+  SET(LEMON_USE_PTHREAD TRUE)
+ELSEIF(LEMON_THREADING STREQUAL "Win32")
+  SET(LEMON_USE_WIN32_THREADS TRUE)
+ENDIF()
 
 ENABLE_TESTING()