dnl Checks for headers
dnl
AC_CHECK_HEADERS(string.h stdarg.h unistd.h sys/time.h utime.h sys/utime.h pwd.h)
-AC_CHECK_HEADERS(termios.h sys/ioctl.h sys/select.h sys/utsname.h signal.h)
+AC_CHECK_HEADERS(termios.h sys/ioctl.h sys/select.h sys/utsname.h)
+AC_CHECK_HEADERS(signal.h setjmp.h)
AC_HEADER_TIME
dnl
AC_FUNC_ALLOCA
AC_FUNC_MMAP
AC_CHECK_FUNCS(strdup strstr strcasecmp strncasecmp strpbrk memmove)
-AC_CHECK_FUNCS(gettimeofday mktime strptime)
-AC_CHECK_FUNCS(strerror snprintf vsnprintf select signal symlink access isatty)
+AC_CHECK_FUNCS(gettimeofday mktime strptime strerror snprintf vsnprintf)
+AC_CHECK_FUNCS(select sigblock sigsetjmp signal symlink access isatty)
AC_CHECK_FUNCS(uname gethostname usleep)
dnl