[Buildroot] [PATCH v2 4/5] lttng-modules: bump to version 2.8.3

[Philippe Proulx <eeppeliteloop@gmail.com>]

LTTng-modules has its own Makefile to build its modules. In particular,
starting from v2.8, LTTng-modules has a way to be included as part of a
Linux kernel image, that is, not as loadable kernel modules. This
implies that additional environment variables need to be passed to the
Makefile and kernel build system.

It's always a good idea for this project to use its Makefile directly,
not building it like you build your typical kernel modules, that is,
using make with `-C` to change directory to the kernel source, and
pointing the module with `M=`. The LTTng-modules does this internally
anyway.

Using the project's Makefile directly instead of the generic BR
kernel-module package ensures that future minor bumps of this project
will be easier as well.

Signed-off-by: Philippe Proulx <eeppeliteloop@gmail.com>
---
Changes v1 -> v2:
  - Detailed commit message.

 package/lttng-modules/lttng-modules.hash |  8 ++++++--
 package/lttng-modules/lttng-modules.mk   | 27 +++++++++++++++++++++++++--
 2 files changed, 31 insertions(+), 4 deletions(-)

diff --git a/package/lttng-modules/lttng-modules.hash b/package/lttng-modules/lttng-modules.hash
index 2d50287..6114dfe 100644
--- a/package/lttng-modules/lttng-modules.hash
+++ b/package/lttng-modules/lttng-modules.hash
@@ -1,2 +1,6 @@
-# from http://lttng.org/files/lttng-tools/lttng-modules-2.7.1.tar.bz2.sha1
-sha1  38c42ec89b4966c7a4cc04aea75f5841634d8d66  lttng-modules-2.7.1.tar.bz2
+# From http://lttng.org/files/lttng-modules/lttng-modules-2.8.3.tar.bz2.md5
+md5   424354c4834d20235dacd9a1fd7653b6  lttng-modules-2.8.3.tar.bz2
+
+# From http://lttng.org/files/lttng-modules/lttng-modules-2.8.3.tar.bz2.sha1
+sha1  862705784a54962f70226004f1fd0bf77f73f10f  lttng-modules-2.8.3.tar.bz2
+
diff --git a/package/lttng-modules/lttng-modules.mk b/package/lttng-modules/lttng-modules.mk
index 5d0c422..34bb0fb 100644
--- a/package/lttng-modules/lttng-modules.mk
+++ b/package/lttng-modules/lttng-modules.mk
@@ -4,11 +4,34 @@
 #
 ################################################################################

-LTTNG_MODULES_VERSION = 2.7.1
+LTTNG_MODULES_VERSION = 2.8.3
 LTTNG_MODULES_SITE = http://lttng.org/files/lttng-modules
 LTTNG_MODULES_SOURCE = lttng-modules-$(LTTNG_MODULES_VERSION).tar.bz2
 LTTNG_MODULES_LICENSE = LGPLv2.1/GPLv2 (kernel modules), MIT (lib/bitfield.h, lib/prio_heap/*)
 LTTNG_MODULES_LICENSE_FILES = lgpl-2.1.txt gpl-2.0.txt mit-license.txt LICENSE
+LTTNG_MODULES_DEPENDENCIES = linux
+
+ifeq ($(BR2_PACKAGE_LTTNG_MODULES),y)
+LINUX_NEEDS_MODULES = y
+endif
+
+LTTNG_MODULES_MAKE_OPTS = \
+	KERNELDIR="$(LINUX_DIR)" \
+	ARCH="$(KERNEL_ARCH)" \
+	CROSS_COMPILE="$(TARGET_CROSS)"
+
+define LTTNG_MODULES_BUILD_CMDS
+	$(TARGET_CONFIGURE_OPTS) $(MAKE) $(LTTNG_MODULES_MAKE_OPTS) -C $(@D)
+endef
+
+define LTTNG_MODULES_INSTALL_STAGING_CMDS
+	$(TARGET_CONFIGURE_OPTS) $(MAKE) $(LTTNG_MODULES_MAKE_OPTS) \
+		INSTALL_MOD_PATH="$(STAGING_DIR)" -C $(@D) modules_install
+endef
+
+define LTTNG_MODULES_INSTALL_TARGET_CMDS
+	$(TARGET_CONFIGURE_OPTS) $(MAKE) $(LTTNG_MODULES_MAKE_OPTS) \
+		INSTALL_MOD_PATH="$(TARGET_DIR)" -C $(@D) modules_install
+endef

-$(eval $(kernel-module))
 $(eval $(generic-package))
--
2.9.3