added plock
diff --git a/configure.in b/configure.in
index f8ef394..8417fe0 100644
--- a/configure.in
+++ b/configure.in
@@ -60,7 +60,7 @@
AC_HEADER_STDC
AC_CHECK_HEADERS(dlfcn.h fcntl.h limits.h ncurses.h \
signal.h stdarg.h stddef.h stdlib.h thread.h unistd.h utime.h \
-sys/audioio.h sys/param.h sys/select.h sys/time.h sys/times.h \
+sys/audioio.h sys/lock.h sys/param.h sys/select.h sys/time.h sys/times.h \
sys/un.h sys/utsname.h sys/wait.h)
AC_HEADER_DIRENT
@@ -255,7 +255,7 @@
# checks for library functions
AC_CHECK_FUNCS(chown clock dlopen flock ftime ftruncate \
gethostname_r getpeername getpgrp getpid gettimeofday getwd \
- link lstat mkfifo nice readlink \
+ link lstat mkfifo nice plock readlink \
select setgid setuid setsid setpgid setpgrp setvbuf \
sigaction siginterrupt sigrelse strftime symlink \
tcgetpgrp tcsetpgrp times truncate uname waitpid) \