-ACI_PACKAGE_SAVED(XML,[XML library (version XML2)],xml2-config,,,:)
-ACI_PACKAGE([SimGrid],[the SimGrid simulator],[SG_init],[-lsimgrid],[simgrid.h])
+ACI_PACKAGE([SimGrid],[the SimGrid simulator],[SG_init],[-lsimgrid],[simgrid.h],,:)
+AM_CONDITIONAL(HAVE_SG,test x$HAVE_SimGrid = xyes)
+
+dnl A C_CHECK_LIB(pthread, pthread_mutex_lock, LIBS="$LIBS -lpthread")
+AC_CHECK_LIB(nsl, gethostbyname, [LIBS="$LIBS -lnsl"])
+AC_CHECK_LIB(socket, connect, [LIBS="$LIBS -lsocket"])
+
+AC_CHECK_LIB(c,swapcontext,
+ [AC_DEFINE([USE_CONTEXT],1,[Define if GNU contexts available and you wish to use them])],
+ [AC_MSG_ERROR([[Cannot find context in your libc, go away !]])])