Merge branch 'dfsg-orig'

[debian/gnuradio] / gr-howto-write-a-block / config / gr_omnithread.m4

diff --git a/gr-howto-write-a-block/config/gr_omnithread.m4 b/gr-howto-write-a-block/config/gr_omnithread.m4
new file mode 100644 (file)
index 0000000..054f078
--- /dev/null
+++ b/gr-howto-write-a-block/config/gr_omnithread.m4
@@ -0,0 +1,52 @@
+# Check for Omnithread (pthread/NT) thread support.             -*- Autoconf -*-
+
+# Copyright 2003,2007 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Boston, MA
+# 02110-1301, USA.
+
+AC_DEFUN([GR_OMNITHREAD],
+[
+  # Check first for POSIX
+  ACX_PTHREAD(
+  [ AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.])
+    ot_posix="yes"
+    DEFINES="$DEFINES -DOMNITHREAD_POSIX=1"
+  ],[
+    # If no POSIX support found, then check for NT threads
+    AC_MSG_CHECKING([for NT threads])
+
+    AC_LINK_IFELSE([
+        #include <windows.h>
+        #include <winbase.h>
+        int main() { InitializeCriticalSection(NULL); return 0; }
+      ],
+      [ 
+        ot_nt="yes"
+        DEFINES="$DEFINES -DOMNITHREAD_NT=1"
+      ],
+      [AC_MSG_FAILURE([GNU Radio requires POSIX threads.  pthreads not found.])]
+    )
+    AC_MSG_RESULT(yes)
+  ])
+  AM_CONDITIONAL(OMNITHREAD_POSIX, test "x$ot_posix" = xyes)
+  AM_CONDITIONAL(OMNITHREAD_NT, test "x$ot_nt" = xyes)
+
+  save_LIBS="$LIBS"
+  AC_SEARCH_LIBS([clock_gettime], [rt], [PTHREAD_LIBS="$PTHREAD_LIBS $LIBS"])
+  AC_CHECK_FUNCS([clock_gettime gettimeofday nanosleep])
+  LIBS="$save_LIBS"
+])
+