partial RT support

diff --git a/m4/linux.m4 b/m4/linux.m4
index 5222393272d2215899fc709da648f57cce8d832e..6ce63d716fff15a363aeb6043b96d20dbb7f617c 100644 (file)
--- a/m4/linux.m4
+++ b/m4/linux.m4
@@ -3,30 +3,30 @@
 AC_DEFUN(DS_LINUX_DIR,
 [
        AC_ARG_WITH([linuxdir],
-               [AC_HELP_STRING([--with-linuxdir],
+               [AC_HELP_STRING([--with-linuxdir=DIR],
                        [specify path to Linux source directory])],
                [LINUX_DIR="${withval}"],
                [LINUX_DIR=default])
 
        if test "${LINUX_DIR}" != "default" ; then
-               DS_TRY_LINUX_DIR(${LINUX_DIR}, , AC_MSG_ERROR("not found") )
+               DS_TRY_LINUX_DIR([${LINUX_DIR}], , AC_MSG_ERROR([Linux dir not found]) )
        fi
 
        if test "${LINUX_DIR}" = "default" ; then
                dir="/lib/modules/`uname -r`/build";
-               DS_TRY_LINUX_DIR(${dir}, LINUX_DIR=${dir}, )
+               DS_TRY_LINUX_DIR([${dir}], [LINUX_DIR=${dir}], )
        fi
        if test "${LINUX_DIR}" = "default" ; then
                dir="../linux";
-               DS_TRY_LINUX_DIR(${dir}, LINUX_DIR=${dir}, )
+               DS_TRY_LINUX_DIR([${dir}], [LINUX_DIR=${dir}], )
        fi
        if test "${LINUX_DIR}" = "default" ; then
                dir="/usr/src/linux";
-               DS_TRY_LINUX_DIR(${dir}, LINUX_DIR=${dir}, )
+               DS_TRY_LINUX_DIR([${dir}], [LINUX_DIR=${dir}], )
        fi
 
        if test "${LINUX_DIR}" = "default" ; then
-               AC_MSG_ERROR(Linux source directory not found)
+               AC_MSG_ERROR([Linux source directory not found])
        fi
 
        AC_SUBST(LINUX_DIR)
@@ -84,6 +84,8 @@ the kernel source directory.])
                        ;;
        esac
 
+       DS_RTAI()
+       DS_RTLINUX()
 ])
 
 AC_DEFUN(DS_LINUX_2_6,
@@ -229,3 +231,54 @@ AC_DEFUN(DS_LINUX_CONFIG_OPTION_MODULE,
        AM_CONDITIONAL([$1],[test "${$1}" = yes -o "${$1}" = module])
 ])
 
+AC_DEFUN(DS_RTAI,
+[
+       AC_ARG_WITH([rtaidir],
+               [AC_HELP_STRING([--with-rtaidir=DIR],
+                       [specify path to RTAI source directory])],
+               [RTAI_DIR="${withval}"],
+               [RTAI_DIR=/usr/src/rtai])
+
+       DS_LINUX_CONFIG_OPTION_MODULE([CONFIG_RTHAL])
+
+       if test "${CONFIG_RTHAL}" != "no" ; then
+               AC_MSG_CHECKING([RTAI directory ${RTAI_DIR}])
+               if [[ -d ${RTAI_DIR}/include ]] ; then
+                       RTAI_CFLAGS="-I${RTAI_DIR}/include"
+               else
+                       if [ -d ${RTAI_DIR}/rtai-core/include ] ; then
+                               RTAI_CFLAGS="-I${RTAI_DIR}/rtai-core/include"
+                       else
+                               AC_MSG_ERROR([incorrect RTAI directory?])
+                       fi
+               fi
+               AC_MSG_RESULT([found])
+               AC_DEFINE([CONFIG_COMEDI_RTAI],[true],[Define if kernel is RTAI patched])
+       fi
+       AC_SUBST(RTAI_CFLAGS)
+
+])
+
+AC_DEFUN(DS_RTLINUX,
+[
+       AC_ARG_WITH([rtlinuxdir],
+               [AC_HELP_STRING([--with-rtlinuxdir=DIR],
+                       [specify path to RTLinux source directory])],
+               [RTLINUX_DIR="${withval}"],
+               [RTLINUX_DIR=/usr/src/rtlinux])
+
+       DS_LINUX_CONFIG_OPTION_MODULE([CONFIG_RTLINUX])
+
+       if test "${CONFIG_RTLINUX}" != "no" ; then
+               AC_MSG_CHECKING([RTLinux directory ${RTLINUX_DIR}])
+               if [[ -d ${RTLINUX_DIR}/include ]] ; then
+                       RTLINUX_CFLAGS="-I${RTLINUX_DIR}/include -I${RTLINUX_DIR}/include/compat -I${RTLINUX_DIR}/include/posix -D__RT__"
+               else
+                       AC_MSG_ERROR([incorrect RTLinux directory?])
+               fi
+               AC_MSG_RESULT([found])
+               AC_DEFINE([CONFIG_COMEDI_RTL],[true],[Define if kernel is RTLinux patched])
+       fi
+       AC_SUBST(RTLINUX_CFLAGS)
+])
+