There're new configure options added to tune modules building process.
New m4 function tries to determine if kernel-devel package is available
and sets makefile's variables (WITH_MODULES, ...) accordingly.

Signed-off-by: Alexey Kodanev <[email protected]>
---
 configure.ac                 |    1 +
 include/mk/config.mk.default |    4 +++
 include/mk/config.mk.in      |    4 +++
 m4/ltp-kernel_devel.m4       |   61 ++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 70 insertions(+), 0 deletions(-)
 create mode 100644 m4/ltp-kernel_devel.m4

diff --git a/configure.ac b/configure.ac
index f217f50..f0fc6b0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -167,5 +167,6 @@ LTP_CHECK_MADVISE
 LTP_CHECK_ACL_SUPPORT
 LTP_CHECK_FS_IOC_FLAGS
 LTP_CHECK_MREMAP_FIXED
+LTP_CHECK_KERNEL_DEVEL
 
 AC_OUTPUT
diff --git a/include/mk/config.mk.default b/include/mk/config.mk.default
index bd364a6..8eec868 100644
--- a/include/mk/config.mk.default
+++ b/include/mk/config.mk.default
@@ -73,4 +73,8 @@ LDFLAGS                       += $(WLDFLAGS)
 CFLAGS                 += $(DEBUG_CFLAGS) $(OPT_CFLAGS) $(WCFLAGS)
 CXXFLAGS               += $(DEBUG_CXXFLAGS) $(OPT_CXXFLAGS) $(WCXXFLAGS)
 
+KERNEL_RELEASE         :=
+KERNEL_DEVEL_DIR       :=
+WITH_MODULES           := no
+
 export datarootdir includedir libdir mandir prefix
diff --git a/include/mk/config.mk.in b/include/mk/config.mk.in
index b835c86..4edd22a 100644
--- a/include/mk/config.mk.in
+++ b/include/mk/config.mk.in
@@ -75,6 +75,10 @@ LDFLAGS                      += $(WLDFLAGS)
 CFLAGS                 += $(DEBUG_CFLAGS) $(OPT_CFLAGS) $(WCFLAGS)
 CXXFLAGS               += $(DEBUG_CXXFLAGS) $(OPT_CXXFLAGS) $(WCXXFLAGS)
 
+KERNEL_RELEASE         := @KERNEL_RELEASE@
+KERNEL_DEVEL_DIR       := @KERNEL_DEVEL_DIR@
+WITH_MODULES           := @WITH_MODULES@
+
 ifeq ($(strip $(prefix)),)
 $(error you are using $$(prefix) incorrectly -- set it to $(abs_top_srcdir) if 
you want to build in the source tree)
 endif
diff --git a/m4/ltp-kernel_devel.m4 b/m4/ltp-kernel_devel.m4
new file mode 100644
index 0000000..f58ee2e
--- /dev/null
+++ b/m4/ltp-kernel_devel.m4
@@ -0,0 +1,61 @@
+dnl Copyright (c) 2013 Oracle and/or its affiliates. All Rights Reserved.
+dnl
+dnl This program is free software; you can redistribute it and/or
+dnl modify it under the terms of the GNU General Public License as
+dnl published by the Free Software Foundation.
+dnl
+dnl This program is distributed in the hope that it would be useful,
+dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
+dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+dnl GNU General Public License for more details.
+dnl
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program; if not, write the Free Software Foundation,
+dnl Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+dnl
+dnl Author: Alexey Kodanev <[email protected]>
+dnl
+
+dnl
+dnl LTP_CHECK_KERNEL_DEVEL
+dnl ----------------------------
+dnl Building kernel modules
+dnl requires kernel-devel installed
+dnl
+
+AC_DEFUN([LTP_CHECK_KERNEL_DEVEL],
+[
+AC_ARG_WITH(
+           [kernel-release],
+           [AC_HELP_STRING([--with-kernel-release=RELEASE],
+                           [specify the kernel release to build modules for])],
+           [KERNEL_RELEASE="${withval}"],
+           [KERNEL_RELEASE=`uname -r`])
+
+AC_SUBST(KERNEL_RELEASE)
+
+AC_ARG_WITH([kernel-devel],
+           [AC_HELP_STRING([--with-kernel-devel=DIR],
+                           [specify path to kernel-devel directory])],
+           [KERNEL_DEVEL_DIR="${withval}"],
+           [KERNEL_DEVEL_DIR="/lib/modules/$KERNEL_RELEASE/build"])
+
+AC_SUBST(KERNEL_DEVEL_DIR)
+
+if test -f "$KERNEL_DEVEL_DIR/Makefile"; then
+       WITH_MODULES="yes"
+else
+       WITH_MODULES="no"
+fi
+
+AC_MSG_RESULT([checking for kernel-devel... $WITH_MODULES])
+
+AC_ARG_WITH(
+           [modules],
+           [AC_HELP_STRING([--without-modules],
+                           [disable auto-building kernel modules])],
+                           [WITH_MODULES="no"],
+                           [])
+
+AC_SUBST(WITH_MODULES)
+])
-- 
1.7.1


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