-#
-# Makefile for the LTT objects.
-#
+# SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
ifneq ($(KERNELRELEASE),)
-ifeq ($(CONFIG_TRACEPOINTS),)
+ # 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
+
+ include $(TOP_LTTNG_MODULES_DIR)/Kbuild.common
+
+ ccflags-y += -I$(TOP_LTTNG_MODULES_DIR)
+
+ obj-$(CONFIG_LTTNG) += lttng-ring-buffer-client-discard.o
+ obj-$(CONFIG_LTTNG) += lttng-ring-buffer-client-overwrite.o
+ obj-$(CONFIG_LTTNG) += lttng-ring-buffer-metadata-client.o
+ obj-$(CONFIG_LTTNG) += lttng-ring-buffer-client-mmap-discard.o
+ obj-$(CONFIG_LTTNG) += lttng-ring-buffer-client-mmap-overwrite.o
+ obj-$(CONFIG_LTTNG) += lttng-ring-buffer-metadata-mmap-client.o
+ obj-$(CONFIG_LTTNG) += lttng-clock.o
+
+ obj-$(CONFIG_LTTNG) += lttng-tracer.o
+
+ lttng-tracer-objs := lttng-events.o lttng-abi.o lttng-string-utils.o \
+ lttng-probes.o lttng-context.o \
+ lttng-context-pid.o lttng-context-procname.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 lttng-context-cpu-id.o \
+ lttng-context-interruptible.o \
+ lttng-context-need-reschedule.o \
+ lttng-context-callstack.o lttng-calibrate.o \
+ lttng-context-hostname.o wrapper/random.o \
+ probes/lttng.o wrapper/trace-clock.o \
+ wrapper/page_alloc.o \
+ lttng-tracker-pid.o \
+ lttng-filter.o lttng-filter-interpreter.o \
+ lttng-filter-specialize.o \
+ lttng-filter-validator.o \
+ probes/lttng-probe-user.o \
+ lttng-tp-mempool.o
+
+ ifneq ($(CONFIG_HAVE_SYSCALL_TRACEPOINTS),)
+ lttng-tracer-objs += lttng-syscalls.o
+ endif # CONFIG_HAVE_SYSCALL_TRACEPOINTS
+
+ ifneq ($(CONFIG_PERF_EVENTS),)
+ lttng-tracer-objs += lttng-context-perf-counters.o
+ endif # CONFIG_PERF_EVENTS
+
+ ifneq ($(CONFIG_PREEMPT_RT_FULL),)
+ lttng-tracer-objs += lttng-context-migratable.o
+ lttng-tracer-objs += lttng-context-preemptible.o
+ endif # CONFIG_PREEMPT_RT_FULL
+
+ ifneq ($(CONFIG_PREEMPT),)
+ lttng-tracer-objs += lttng-context-preemptible.o
+ endif
+
+ lttng-tracer-objs += $(shell \
+ if [ $(VERSION) -ge 4 \
+ -o \( $(VERSION) -eq 3 -a $(PATCHLEVEL) -ge 15 \) ] ; then \
+ echo "lttng-tracepoint.o" ; fi;)
+
+ obj-$(CONFIG_LTTNG) += lttng-statedump.o
+ lttng-statedump-objs := lttng-statedump-impl.o wrapper/irqdesc.o \
+ wrapper/fdtable.o
+
+ obj-$(CONFIG_LTTNG) += probes/
+ obj-$(CONFIG_LTTNG) += lib/
+ obj-$(CONFIG_LTTNG) += tests/
-$(error You need to enable CONFIG_TRACEPOINTS in kernel!)
-
-endif #CONFIG_TRACEPOINTS
-
-ifneq ($(CONFIG_TRACEPOINTS),)
-
-obj-m += lttng-ring-buffer-client-discard.o
-obj-m += lttng-ring-buffer-client-overwrite.o
-obj-m += lttng-ring-buffer-metadata-client.o
-obj-m += lttng-ring-buffer-client-mmap-discard.o
-obj-m += lttng-ring-buffer-client-mmap-overwrite.o
-obj-m += lttng-ring-buffer-metadata-mmap-client.o
-
-obj-m += lttng-tracer.o
-lttng-tracer-objs := lttng-events.o lttng-abi.o \
- lttng-probes.o lttng-context.o \
- lttng-context-pid.o lttng-context-procname.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 lttng-calibrate.o \
- lttng-context-hostname.o wrapper/random.o
-
-obj-m += lttng-statedump.o
-lttng-statedump-objs := lttng-statedump-impl.o wrapper/irqdesc.o \
- wrapper/fdtable.o
-
-ifneq ($(CONFIG_HAVE_SYSCALL_TRACEPOINTS),)
-lttng-tracer-objs += lttng-syscalls.o probes/lttng-probe-user.o
-endif # CONFIG_HAVE_SYSCALL_TRACEPOINTS
+else # KERNELRELEASE
-ifneq ($(CONFIG_PERF_EVENTS),)
-lttng-tracer-objs += $(shell \
- if [ $(VERSION) -ge 3 \
- -o \( $(VERSION) -eq 2 -a $(PATCHLEVEL) -ge 6 -a $(SUBLEVEL) -ge 34 \) ] ; then \
- echo "lttng-context-perf-counters.o" ; fi;)
-endif # CONFIG_PERF_EVENTS
+# 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.
-obj-m += probes/
-obj-m += lib/
+KERNELDIR ?= /lib/modules/$(shell uname -r)/build
+PWD := $(shell pwd)
+CFLAGS = $(EXTCFLAGS)
-endif # CONFIG_TRACEPOINTS
+default: modules
-else # KERNELRELEASE
- KERNELDIR ?= /lib/modules/$(shell uname -r)/build
- PWD := $(shell pwd)
- CFLAGS = $(EXTCFLAGS)
-
-default:
- $(MAKE) -C $(KERNELDIR) M=$(PWD) 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
+ $(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m modules_install
clean:
$(MAKE) -C $(KERNELDIR) M=$(PWD) clean
%.i: %.c
- $(MAKE) -C $(KERNELDIR) M=$(PWD) $@
+ $(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m $@
+
endif # KERNELRELEASE
projects / lttng-modules.git / blobdiff