update machinery: keep threads persistent

[monky] / configure.ac.in

diff --git a/configure.ac.in b/configure.ac.in
index 9ed9044..a5bde0d 100644 (file)
--- a/configure.ac.in
+++ b/configure.ac.in
@@ -755,7 +755,7 @@ dnl Some headers
 dnl
 
 AC_CHECK_HEADERS([signal.h unistd.h sys/utsname.h sys/stat.h linux/soundcard.h alsa/asoundlib.h dirent.h mcheck.h \
-      sys/statfs.h sys/param.h pthread.h assert.h errno.h time.h])
+      sys/statfs.h sys/param.h pthread.h semaphore.h assert.h errno.h time.h])
 AC_CHECK_HEADERS([sys/mount.h], [], [],
      [#ifdef HAVE_SYS_PARAM_H
       #include <sys/param.h>