Since the openvswitch project inception it has had support for building
a Linux kernel module to support the OVS kernel datapath. Since Linux
kernel release 5.8 support for newer kernels has been deprecated. Now
is the time to fully discontinue support for building the openvswitch
kernel driver. Since Linux 5.9 the Linux built-in openvswitch kernel
driver supports all necessary features and functions of the kernel
datapath and the need to support this additional "out of tree" kernel
module is gone.
Remove the --with-linux configuration support from the acinclude.m4
configuration and warn user it is not supported any longer.
Signed-off-by: Greg Rose
---
acinclude.m4 | 810 +--
1 file changed, 1 insertion(+), 809 deletions(-)
diff --git a/acinclude.m4 b/acinclude.m4
index d15f11a4e..e20d61df4 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -119,133 +119,9 @@ dnl OVS_CHECK_LINUX
dnl
dnl Configure linux kernel source tree
AC_DEFUN([OVS_CHECK_LINUX], [
- AC_ARG_WITH([linux],
- [AC_HELP_STRING([--with-linux=/path/to/linux],
- [Specify the Linux kernel build directory])])
- AC_ARG_WITH([linux-source],
- [AC_HELP_STRING([--with-linux-source=/path/to/linux-source],
- [Specify the Linux kernel source directory
- (usually figured out automatically from build
- directory)])])
-
- # Deprecated equivalents to --with-linux, --with-linux-source.
- AC_ARG_WITH([l26])
- AC_ARG_WITH([l26-source])
-
if test X"$with_linux" != X; then
-KBUILD=$with_linux
-AC_MSG_WARN([--with-linux is deprecated and kernel support is limited to
5.8 and below])
- elif test X"$with_l26" != X; then
-KBUILD=$with_l26
-AC_MSG_WARN([--with-l26 is deprecated, please use --with-linux instead])
- else
-KBUILD=
- fi
-
- if test X"$KBUILD" != X; then
-if test X"$with_linux_source" != X; then
- KSRC=$with_linux_source
-elif test X"$with_l26_source" != X; then
- KSRC=$with_l26_source
- AC_MSG_WARN([--with-l26-source is deprecated, please use
--with-linux-source instead])
-else
- KSRC=
-fi
- elif test X"$with_linux_source" != X || test X"$with_l26_source" != X; then
-AC_MSG_ERROR([Linux source directory may not be specified without Linux
build directory])
- fi
-
- if test -n "$KBUILD"; then
-KBUILD=`eval echo "$KBUILD"`
-case $KBUILD in
-/*) ;;
-*) KBUILD=`pwd`/$KBUILD ;;
-esac
-
-# The build directory is what the user provided.
-# Make sure that it exists.
-AC_MSG_CHECKING([for Linux build directory])
-if test -d "$KBUILD"; then
-AC_MSG_RESULT([$KBUILD])
-AC_SUBST(KBUILD)
-else
-AC_MSG_RESULT([no])
-AC_ERROR([source dir $KBUILD doesn't exist])
-fi
-
-# Debian breaks kernel headers into "source" header and "build" headers.
-# We want the source headers, but $KBUILD gives us the "build" headers.
-# Use heuristics to find the source headers.
-AC_MSG_CHECKING([for Linux source directory])
-if test -n "$KSRC"; then
- KSRC=`eval echo "$KSRC"`
- case $KSRC in
- /*) ;;
- *) KSRC=`pwd`/$KSRC ;;
- esac
- if test ! -e $KSRC/include/linux/kernel.h; then
-AC_MSG_ERROR([$KSRC is not a kernel source directory])
- fi
-else
- KSRC=$KBUILD
- if test ! -e $KSRC/include/linux/kernel.h; then
-# Debian kernel build Makefiles tend to include a line of the form:
-# MAKEARGS := -C /usr/src/linux-headers-3.2.0-1-common
O=/usr/src/linux-headers-3.2.0-1-486
-# First try to extract the source directory from this line.
-KSRC=`sed -n 's/.*-C \([[^ ]]*\).*/\1/p' "$KBUILD"/Makefile`
-if test ! -e "$KSRC"/include/linux/kernel.h; then
- # Didn't work. Fall back to name-based heuristics that used to work.
- case `echo "$KBUILD" | sed 's,/*$,,'` in # (
-*/build)
- KSRC=`echo "$KBUILD" | sed 's,/build/*$,/source,'`
- ;; # (
-*)
- KSRC=`(cd $KBUILD && pwd -P) | sed 's,-[[^-]]*$,-common,'`
- ;;
- esac
-fi
- fi
- if test ! -e "$KSRC"/include/linux/kernel.h; then
-AC_MSG_ERROR([cannot find source directory (please use
--with-linux-source)])
- fi
-fi
-AC_MSG_RESULT([$KSRC])
-
-AC_MSG_CHECKING([for kernel version])
-version=`sed -n 's/^VERSION = //p' "$KSRC/Makefile"`
-patchlevel=`sed -n 's/^PATCHLEVEL = //p' "$KSRC/Makefile"`
-sublevel=`sed -n 's/^SUBLEVEL = //p' "$KSRC/Makefile"`
-if test X"$version" = X || test X"$patchlevel" = X; then
- AC_ERROR([cannot determine kernel version])
-elif test X"$sublevel" = X; then
- kversion=$version.$patchlevel
-else
- kversion=$version.$patchlevel.$sublevel
-fi
-AC_MSG_RESULT([$kversion])
