Makefile

   1 #
   2 # Makefile for the LTT objects.
   3 #
   4
   5 ifneq ($(KERNELRELEASE),)
   6
   7 ifeq ($(CONFIG_TRACEPOINTS),)
   8 $(error The option CONFIG_TRACEPOINTS needs to be enabled in your kernel configuration)
   9 endif # CONFIG_TRACEPOINTS
  10
  11 KERNELDIR = ${LTTNG_KERNELDIR}
  12 MAKEFILEDIR = $(shell dirname $(lastword $(MAKEFILE_LIST)))
  13
  14 lttng_check_linux_version = $(shell pwd)/include/linux/version.h
  15 lttng_check_generated_linux_version = $(shell pwd)/include/generated/uapi/linux/version.h
  16
  17
  18 #
  19 # Check for stale version.h, which can be a leftover from an old Linux
  20 # kernel tree moved to a newer kernel version, only pruned by make
  21 # distclean.
  22 #
  23 ifneq ($(wildcard $(lttng_check_linux_version)),)
  24 ifneq ($(wildcard $(lttng_check_generated_linux_version)),)
  25 $(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)
  26 endif
  27 endif
  28
  29 include $(MAKEFILEDIR)/Makefile.ABI.workarounds
  30
  31 obj-m += lttng-ring-buffer-client-discard.o
  32 obj-m += lttng-ring-buffer-client-overwrite.o
  33 obj-m += lttng-ring-buffer-metadata-client.o
  34 obj-m += lttng-ring-buffer-client-mmap-discard.o
  35 obj-m += lttng-ring-buffer-client-mmap-overwrite.o
  36 obj-m += lttng-ring-buffer-metadata-mmap-client.o
  37
  38 obj-m += lttng-tracer.o
  39 lttng-tracer-objs :=  lttng-events.o lttng-abi.o \
  40                         lttng-probes.o lttng-context.o \
  41                         lttng-context-pid.o lttng-context-procname.o \
  42                         lttng-context-prio.o lttng-context-nice.o \
  43                         lttng-context-vpid.o lttng-context-tid.o \
  44                         lttng-context-vtid.o lttng-context-ppid.o \
  45                         lttng-context-vppid.o lttng-calibrate.o \
  46                         lttng-context-hostname.o wrapper/random.o \
  47                         probes/lttng.o wrapper/trace-clock.o \
  48                         wrapper/page_alloc.o
  49
  50 obj-m += lttng-statedump.o
  51 lttng-statedump-objs := lttng-statedump-impl.o wrapper/irqdesc.o \
  52                         wrapper/fdtable.o
  53
  54 ifneq ($(CONFIG_HAVE_SYSCALL_TRACEPOINTS),)
  55 lttng-tracer-objs += lttng-syscalls.o probes/lttng-probe-user.o
  56 endif # CONFIG_HAVE_SYSCALL_TRACEPOINTS
  57
  58 ifneq ($(CONFIG_PERF_EVENTS),)
  59 lttng-tracer-objs += $(shell \
  60         if [ $(VERSION) -ge 3 \
  61                 -o \( $(VERSION) -eq 2 -a $(PATCHLEVEL) -ge 6 -a $(SUBLEVEL) -ge 33 \) ] ; then \
  62                 echo "lttng-context-perf-counters.o" ; fi;)
  63 endif # CONFIG_PERF_EVENTS
  64
  65 lttng-tracer-objs += $(shell \
  66         if [ $(VERSION) -ge 4 \
  67                 -o \( $(VERSION) -eq 3 -a $(PATCHLEVEL) -ge 15 -a $(SUBLEVEL) -ge 0 \) ] ; then \
  68                 echo "lttng-tracepoint.o" ; fi;)
  69
  70 obj-m += probes/
  71 obj-m += lib/
  72
  73 else # KERNELRELEASE
  74         KERNELDIR ?= /lib/modules/$(shell uname -r)/build
  75         PWD := $(shell pwd)
  76         CFLAGS = $(EXTCFLAGS)
  77
  78 default:
  79         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) modules
  80
  81 modules_install:
  82         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install
  83
  84 clean:
  85         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) clean
  86
  87 %.i: %.c
  88         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) $@
  89 endif # KERNELRELEASE