/* Needed for FD_SET on some systems. */
#include <sys/types.h>
-#ifdef SCM_HAVE_SYS_SELECT_H
-#include <sys/select.h>
+#if SCM_HAVE_SYS_SELECT_H
+# include <sys/select.h>
#endif
-#ifdef SCM_HAVE_WINSOCK2_H
+#if SCM_HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
SELECT_TYPE *efds,
struct timeval *timeout);
-#ifdef SCM_USE_COOP_THREADS
+#if SCM_USE_COOP_THREADS
SCM_API int scm_I_am_dead;