Add an hidden option to enable ucontext on Mac.

cmake -Ducontext=on .
For the moment ucontext don't work on MAC OSX

diff --git a/buildtools/Cmake/CompleteInFiles.cmake b/buildtools/Cmake/CompleteInFiles.cmake
index b7a9ea2..bad66b1 100644 (file)
--- a/buildtools/Cmake/CompleteInFiles.cmake
+++ b/buildtools/Cmake/CompleteInFiles.cmake
@@ -219,8 +219,12 @@ ELSE(CMAKE_CROSSCOMPILING)
                        file(READ "${simgrid_BINARY_DIR}/conftestval" mcsc)
                        STRING(REPLACE "\n" "" mcsc "${mcsc}")
                        if(mcsc)
                        file(READ "${simgrid_BINARY_DIR}/conftestval" mcsc)
                        STRING(REPLACE "\n" "" mcsc "${mcsc}")
                        if(mcsc)

-                               set(mcsc "yes")
-                               set(HAVE_UCONTEXT_H 1)
+                           if(APPLE AND NOT ucontext) # TODO for the moment ucontext don't work on MAC OSX
+                               set(mcsc "no") 
+                           else(APPLE AND NOT ucontext)
+                               set(mcsc "yes")
+                               set(HAVE_UCONTEXT_H 1)
+                               endif(APPLE AND NOT ucontext)

                        else(mcsc)
                                set(mcsc "no")
                        endif(mcsc)
                        else(mcsc)
                                set(mcsc "no")
                        endif(mcsc)