Revert to simgears thread support. Flightgear side.

For all source directories outside of simgear/scene,
which really depends very hard on osg, avoid using osg
classes. This should reenable the use of some basic and
scenegraph independent parts of simgear without the
the need for osg.

CMakeModules/FindSimGear.cmake

@@ -1,7 +1,7 @@
 # Locate SimGear
 # This module defines
 # SIMGEAR_LIBRARIES
-# SIMGEAR_FOUND, if false, do not try to link to SimGear 
+# SIMGEAR_FOUND, if false, do not try to link to SimGear
 # SIMGEAR_INCLUDE_DIR, where to find the headers
 #
 # $SIMGEAR_DIR is an environment variable that would
@@ -30,7 +30,7 @@
 # /System/Library/Frameworks/SimGear.framework/Headers
 #
 # On OS X, this will prefer the Framework version (if found) over others.
-# People will have to manually change the cache values of 
+# People will have to manually change the cache values of
 # SimGear_LIBRARIES to override this selection or set the CMake environment
 # CMAKE_INCLUDE_PATH to modify the search paths.
 
@@ -38,7 +38,7 @@ include(SelectLibraryConfigurations)
 
 FIND_PATH(SIMGEAR_INCLUDE_DIR simgear/math/SGMath.hxx
   HINTS $ENV{SIMGEAR_DIR}
-  PATH_SUFFIXES include 
+  PATH_SUFFIXES include
   PATHS
   ~/Library/Frameworks
   /Library/Frameworks
@@ -103,9 +103,9 @@ macro(find_sg_component comp libs)
 endmacro()
 
 
-if(${SIMGEAR_LIBRARIES} STREQUAL "SIMGEAR_LIBRARIES-NOTFOUND")  
+if(${SIMGEAR_LIBRARIES} STREQUAL "SIMGEAR_LIBRARIES-NOTFOUND")
     set(SIMGEAR_LIBRARIES "") # clear value
-    
+
     if(NOT MSVC)
         # Olaf indicates that linking the threads libs causes failures
         # on MSVC builds
@@ -115,7 +115,7 @@ if(${SIMGEAR_LIBRARIES} STREQUAL "SIMGEAR_LIBRARIES-NOTFOUND")
   # note the order here affects the order Simgear libraries are
   # linked in, and hence ability to link when using a traditional
   # linker such as GNU ld on Linux
-    set(comps 
+    set(comps
         ephem
         tsync
         environment
@@ -123,13 +123,12 @@ if(${SIMGEAR_LIBRARIES} STREQUAL "SIMGEAR_LIBRARIES-NOTFOUND")
         sky
         material
         tgdb
-        model    
+        model
         screen
         bucket
         bvh
         util route
         timing
-        ${thread_lib}
         io
         serial
         sound
@@ -137,10 +136,11 @@ if(${SIMGEAR_LIBRARIES} STREQUAL "SIMGEAR_LIBRARIES-NOTFOUND")
         props
         xml
         misc
-        debug 
+        ${thread_lib}
+        debug
         magvar
         math)
-    
+
     foreach(component ${comps})
         find_sg_component(${component} SIMGEAR_LIBRARIES)
     endforeach()
@@ -157,14 +157,14 @@ SET(CMAKE_REQUIRED_INCLUDES ${SIMGEAR_INCLUDE_DIR})
 check_cxx_source_runs(
     "#include <cstdio>
     #include \"simgear/version.h\"
-    
+
     #define xstr(s) str(s)
     #define str(s) #s
-     
+
     #define MIN_MAJOR ${SimGear_FIND_VERSION_MAJOR}
     #define MIN_MINOR ${SimGear_FIND_VERSION_MINOR}
     #define MIN_MICRO ${SimGear_FIND_VERSION_PATCH}
-    
+
     int main() {
         int major, minor, micro;
 
@@ -185,6 +185,6 @@ check_cxx_source_runs(
     SIMGEAR_VERSION_OK)
 
 include(FindPackageHandleStandardArgs)
-FIND_PACKAGE_HANDLE_STANDARD_ARGS(SimGear DEFAULT_MSG 
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(SimGear DEFAULT_MSG
      SIMGEAR_LIBRARIES SIMGEAR_INCLUDE_DIR SIMGEAR_VERSION_OK)
 

utils/GPSsmooth/CMakeLists.txt

@@ -3,10 +3,11 @@ add_executable(GPSsmooth gps.cxx gps_main.cxx)
 add_executable(MIDGsmooth MIDG-II.cxx MIDG_main.cxx)
 add_executable(UGsmooth UGear.cxx UGear_command.cxx UGear_main.cxx UGear_telnet.cxx)
 
-target_link_libraries(GPSsmooth 
+target_link_libraries(GPSsmooth
 	${SIMGEAR_IO_LIBRARY}
 	${SIMGEAR_MISC_LIBRARY}
 	${SIMGEAR_STRUCTURE_LIBRARY}
+	${SIMGEAR_THREADS_LIBRARY}
 	${SIMGEAR_TIMING_LIBRARY}
 	${SIMGEAR_DEBUG_LIBRARY}
 	${PLIB_SG_LIBRARY}
@@ -15,18 +16,17 @@ target_link_libraries(GPSsmooth
 	${WINMM_LIBRARY}
 	${WINSOCK_LIBRARY}
 	${ZLIB_LIBRARIES}
-  ${OPENTHREADS_LIBRARIES}
 	${RT_LIBRARY}
 )
 
-target_link_libraries(MIDGsmooth 
+target_link_libraries(MIDGsmooth
 	${SIMGEAR_IO_LIBRARY}
 	${SIMGEAR_MATH_LIBRARY}
 	${SIMGEAR_SERIAL_LIBRARY}
 	${SIMGEAR_STRUCTURE_LIBRARY}
+	${SIMGEAR_THREADS_LIBRARY}
 	${SIMGEAR_TIMING_LIBRARY}
 	${SIMGEAR_DEBUG_LIBRARY}
-  ${OPENTHREADS_LIBRARIES}
 	${PLIB_SG_LIBRARY}
 	${PLIB_UL_LIBRARY}
 	${WINMM_LIBRARY}
@@ -34,15 +34,15 @@ target_link_libraries(MIDGsmooth
 	${RT_LIBRARY}
 )
 
-target_link_libraries(UGsmooth 
+target_link_libraries(UGsmooth
 	${SIMGEAR_DEBUG_LIBRARY}
 	${SIMGEAR_IO_LIBRARY}
 	${SIMGEAR_MATH_LIBRARY}
 	${SIMGEAR_MISC_LIBRARY}
 	${SIMGEAR_SERIAL_LIBRARY}
 	${SIMGEAR_STRUCTURE_LIBRARY}
+	${SIMGEAR_THREADS_LIBRARY}
 	${SIMGEAR_TIMING_LIBRARY}
-  ${OPENTHREADS_LIBRARIES}
 	${PLIB_SG_LIBRARY}
 	${PLIB_UL_LIBRARY}
 	${WINMM_LIBRARY}

utils/TerraSync/CMakeLists.txt

@@ -1,17 +1,17 @@
 
-	
+
 add_executable(terrasync terrasync.cxx)
 
-target_link_libraries(terrasync 
+target_link_libraries(terrasync
 	${SIMGEAR_LIBRARIES}
-  ${OPENTHREADS_LIBRARIES}
 	${ZLIB_LIBRARIES}
-    ${WINSOCK_LIBRARY})
+    ${WINSOCK_LIBRARY}
+    ${RT_LIBRARY})
 
 if(LIBSVN_FOUND)
 	target_link_libraries(terrasync ${LIBSVN_LIBRARIES})
 	set_property(TARGET terrasync APPEND PROPERTY COMPILE_FLAGS "${APR_CFLAGS}")
-	
+
 	IF(APPLE)
 	    set_property(SOURCE terrasync.cxx PROPERTY COMPILE_FLAGS "-iwithsysroot ${LIBSVN_INCLUDE_DIR}")
 	ELSE()

utils/fgpanel/CMakeLists.txt

@@ -16,14 +16,13 @@ if(GLUT_FOUND)
 		panel_io.cxx)
 
 	target_link_libraries(fgpanel 
-		${RT_LIBRARY}
 		${PNG_LIBRARIES}
 		${GLUT_LIBRARIES}
 		${SIMGEAR_LIBRARIES}
-    ${OPENTHREADS_LIBRARIES}
 		${OPENGL_LIBRARIES}
 		${ZLIB_LIBRARIES}
 		${PLIB_LIBRARIES}
+		${RT_LIBRARY}
 		)
 
 	install(TARGETS fgpanel RUNTIME DESTINATION bin)

utils/fgviewer/CMakeLists.txt

@@ -1,11 +1,12 @@
 
 add_executable(fgviewer fgviewer.cxx)
 
-target_link_libraries(fgviewer 
+target_link_libraries(fgviewer
 	${SIMGEAR_LIBRARIES}
-	${OPENSCENEGRAPH_LIBRARIES} 
+	${OPENSCENEGRAPH_LIBRARIES}
 	${OPENGL_LIBRARIES}
 	${ZLIB_LIBRARIES}
-	${PLIB_LIBRARIES})
+	${PLIB_LIBRARIES}
-	
+        ${RT_LIBRARY})
+
 install(TARGETS fgviewer RUNTIME DESTINATION bin)