Patch from "Andreas Leuner" <al14@inf.tu-dresden.de>:

I have modified the rtai.m4 script locally to recognize a kernel with
ipipe support. With this the generated configure script detects ipipe
support and activates RTAI support. The so modified comedi compiles fine
and modules load without any crashes. However I haven't tested the result
with real daq hardware yet.

diff --git a/m4/rtai.m4 b/m4/rtai.m4
index 0b23e21a420ded6280db3d71022d2a2da791fe8f..a3d4e3f6cc2c6f399ecc0afd0962ea294185dc8b 100644 (file)
--- a/m4/rtai.m4
+++ b/m4/rtai.m4
@@ -9,8 +9,9 @@ AC_DEFUN([DS_RTAI],
 
        AS_LINUX_CONFIG_OPTION_MODULE([CONFIG_RTHAL])
        AS_LINUX_CONFIG_OPTION_MODULE([CONFIG_ADEOS])
-
-       if test "${CONFIG_RTHAL}" != "no" -o "${CONFIG_ADEOS}" != "no" ; then
+       AS_LINUX_CONFIG_OPTION_MODULE([CONFIG_IPIPE])
+       
+       if test "${CONFIG_RTHAL}" != "no" -o "${CONFIG_ADEOS}" != "no" -o "${CONFIG_IPIPE}" != "no" ; then
                AC_MSG_CHECKING([RTAI directory ${RTAI_DIR}])
                if [[ -d ${RTAI_DIR}/include ]] ; then
                        RTAI_CFLAGS="-I${RTAI_DIR}/include"