X-Git-Url: http://git.efficios.com/?p=deliverable%2Flttng-modules.git;a=blobdiff_plain;f=Makefile;h=c586efedc8c52538308fc9f81d3373d34709dc2b;hp=e93792c8fabb00bd8157c1c2b603b9d7276af9f9;hb=refs%2Fheads%2Fsow-2020-0002-rev3;hpb=0f9c99095c8a1de40f47c50d1c29184771ed23bc

diff --git a/Makefile b/Makefile
index e93792c8..c586efed 100644
--- a/Makefile
+++ b/Makefile
@@ -1,51 +1,57 @@
-#
-# Makefile for the LTT objects.
-#
+# SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
 
 ifneq ($(KERNELRELEASE),)
-ifneq ($(CONFIG_TRACEPOINTS),)
-
-obj-m += ltt-ring-buffer-client-discard.o
-obj-m += ltt-ring-buffer-client-overwrite.o
-obj-m += ltt-ring-buffer-metadata-client.o
-obj-m += ltt-ring-buffer-client-mmap-discard.o
-obj-m += ltt-ring-buffer-client-mmap-overwrite.o
-obj-m += ltt-ring-buffer-metadata-mmap-client.o
-
-obj-m += ltt-relay.o
-ltt-relay-objs :=  ltt-events.o ltt-debugfs-abi.o \
-			ltt-probes.o ltt-context.o \
-			lttng-context-pid.o lttng-context-comm.o \
-			lttng-context-prio.o lttng-context-nice.o \
-			lttng-context-vpid.o lttng-context-tid.o \
-			lttng-context-vtid.o lttng-context-ppid.o \
-			lttng-context-vppid.o
-
-ifneq ($(CONFIG_PERF_EVENTS),)
-ltt-relay-objs += $(shell \
-	if [ $(VERSION) -ge 3 \
-		-o \( $(VERSION) -eq 2 -a $(PATCHLEVEL) -ge 6 -a $(SUBLEVEL) -ge 33 \) ] ; then \
-		echo "lttng-context-perf-counters.o" ; fi;)
-endif
-
-obj-m += probes/
-obj-m += lib/
-
-endif
-
-else
-	KERNELDIR ?= /lib/modules/$(shell uname -r)/build
-	PWD := $(shell pwd)
-	CFLAGS = $(EXTCFLAGS)
-
-default:
-	$(MAKE) -C $(KERNELDIR) M=$(PWD) modules
+
+  # This part of the Makefile is used when called by the kernel build system
+  # and defines the modules to be built.
+
+  ifdef CONFIG_LOCALVERSION	# Check if dot-config is included.
+    ifeq ($(CONFIG_TRACEPOINTS),)
+      $(error The option CONFIG_TRACEPOINTS needs to be enabled in your kernel configuration)
+    endif # CONFIG_TRACEPOINTS
+  endif # ifdef CONFIG_LOCALVERSION
+
+  TOP_LTTNG_MODULES_DIR := $(shell dirname $(lastword $(MAKEFILE_LIST)))
+
+  lttng_check_linux_version = $(shell pwd)/include/linux/version.h
+  lttng_check_generated_linux_version = $(shell pwd)/include/generated/uapi/linux/version.h
+
+  #
+  # Check for stale version.h, which can be a leftover from an old Linux
+  # kernel tree moved to a newer kernel version, only pruned by make
+  # distclean.
+  #
+  ifneq ($(wildcard $(lttng_check_linux_version)),)
+    ifneq ($(wildcard $(lttng_check_generated_linux_version)),)
+      $(error Duplicate version.h files found in $(lttng_check_linux_version) and $(lttng_check_generated_linux_version). Consider running make distclean on your kernel, or removing the stale $(lttng_check_linux_version) file)
+    endif
+  endif
+
+  obj-$(CONFIG_LTTNG) += src/
+  obj-$(CONFIG_LTTNG) += tests/
+
+else # KERNELRELEASE
+
+# This part of the Makefile is used when the 'make' command is runned in the
+# base directory of the lttng-modules sources. It sets some environment and
+# calls the kernel build system to build the actual modules.
+
+KERNELDIR ?= /lib/modules/$(shell uname -r)/build
+PWD := $(shell pwd)
+CFLAGS = $(EXTCFLAGS)
+
+default: modules
+
+modules:
+	$(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m modules
 
 modules_install:
-	$(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install
-	/sbin/depmod -a
+	$(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m modules_install
 
 clean:
 	$(MAKE) -C $(KERNELDIR) M=$(PWD) clean
 
-endif
+%.i: %.c
+	$(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m $@
+
+endif # KERNELRELEASE