AC_CHECK_HEADERS(limits.h memory.h string.h strings.h unistd.h termios.h termio.h sgtty.h stddef.h sys/procfs.h link.h)
AC_HEADER_STAT
+AC_CHECK_FUNCS(setpgid)
+
AC_MSG_CHECKING([for gregset_t type])
AC_CACHE_VAL(gdb_cv_have_gregset_t,
[AC_TRY_LINK([#include <sys/procfs.h>],[gregset_t *gregsetp = 0],