static xbt_swag_t context_living = NULL;
#ifndef USE_PTHREADS /* USE_PTHREADS and USE_CONTEXT are exclusive */
-# ifndef HAVE_UCONTEXT_H
+# ifndef USE_UCONTEXT
/* don't want to play with conditional compilation in automake tonight, sorry.
include directly the c file from here when needed. */
# include "context_win32.c"