Search for threading lib on any platform in c_sync

Threading library is necessary for all platform when compiling c_sync wrapper. Moving the search fix the missing library on Linux. Signed-off-by: Nicolas Bourdaud <nicolas.bourdaud@gmail.com>

Author: nbourdau

wrappers/c_sync/CMakeLists.txt

@@ -3,12 +3,12 @@
 ######################################################################################
 if (WIN32)
  set_source_files_properties(libfreenect_sync.c PROPERTIES LANGUAGE CXX)
-
  set(THREADS_USE_PTHREADS_WIN32 true)
- find_package(Threads REQUIRED)
- include_directories(${THREADS_PTHREADS_INCLUDE_DIR})
 endif()
 
+find_package(Threads REQUIRED)
+include_directories(${THREADS_PTHREADS_INCLUDE_DIR})
+
 add_library (freenect_sync SHARED libfreenect_sync.c)
 add_library (freenect_sync_static STATIC libfreenect_sync.c)
 set_target_properties (freenect_sync_static PROPERTIES OUTPUT_NAME freenect_sync)
@@ -25,4 +25,5 @@ install (TARGETS freenect_sync
 install (TARGETS freenect_sync_static
  DESTINATION "${PROJECT_LIBRARY_INSTALL_DIR}")
 install (FILES "libfreenect_sync.h"
- DESTINATION ${PROJECT_INCLUDE_INSTALL_DIR})
+ DESTINATION ${PROJECT_INCLUDE_INSTALL_DIR})
+