Makefile

   1 #
   2 # Makefile for the LTT objects.
   3 #
   4
   5 ifneq ($(KERNELRELEASE),)
   6
   7 ifdef CONFIG_LOCALVERSION       # Check if dot-config is included.
   8 ifeq ($(CONFIG_TRACEPOINTS),)
   9 $(error The option CONFIG_TRACEPOINTS needs to be enabled in your kernel configuration)
  10 endif # CONFIG_TRACEPOINTS
  11 endif # ifdef CONFIG_LOCALVERSION
  12
  13 KERNELDIR = ${LTTNG_KERNELDIR}
  14 MAKEFILEDIR = $(shell dirname $(lastword $(MAKEFILE_LIST)))
  15
  16 lttng_check_linux_version = $(shell pwd)/include/linux/version.h
  17 lttng_check_generated_linux_version = $(shell pwd)/include/generated/uapi/linux/version.h
  18
  19
  20 #
  21 # Check for stale version.h, which can be a leftover from an old Linux
  22 # kernel tree moved to a newer kernel version, only pruned by make
  23 # distclean.
  24 #
  25 ifneq ($(wildcard $(lttng_check_linux_version)),)
  26 ifneq ($(wildcard $(lttng_check_generated_linux_version)),)
  27 $(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)
  28 endif
  29 endif
  30
  31 include $(MAKEFILEDIR)/Makefile.ABI.workarounds
  32
  33 obj-m += lttng-ring-buffer-client-discard.o
  34 obj-m += lttng-ring-buffer-client-overwrite.o
  35 obj-m += lttng-ring-buffer-metadata-client.o
  36 obj-m += lttng-ring-buffer-client-mmap-discard.o
  37 obj-m += lttng-ring-buffer-client-mmap-overwrite.o
  38 obj-m += lttng-ring-buffer-metadata-mmap-client.o
  39
  40 obj-m += lttng-tracer.o
  41 lttng-tracer-objs :=  lttng-events.o lttng-abi.o \
  42                         lttng-probes.o lttng-context.o \
  43                         lttng-context-pid.o lttng-context-procname.o \
  44                         lttng-context-prio.o lttng-context-nice.o \
  45                         lttng-context-vpid.o lttng-context-tid.o \
  46                         lttng-context-vtid.o lttng-context-ppid.o \
  47                         lttng-context-vppid.o lttng-context-cpu-id.o \
  48                         lttng-calibrate.o \
  49                         lttng-context-hostname.o wrapper/random.o \
  50                         probes/lttng.o wrapper/trace-clock.o \
  51                         wrapper/page_alloc.o \
  52                         lttng-tracker-pid.o \
  53                         lttng-filter.o lttng-filter-interpreter.o \
  54                         lttng-filter-specialize.o \
  55                         lttng-filter-validator.o \
  56                         probes/lttng-probe-user.o
  57
  58 ifneq ($(CONFIG_HAVE_SYSCALL_TRACEPOINTS),)
  59 lttng-tracer-objs += lttng-syscalls.o
  60 endif # CONFIG_HAVE_SYSCALL_TRACEPOINTS
  61
  62 ifneq ($(CONFIG_PERF_EVENTS),)
  63 lttng-tracer-objs += $(shell \
  64         if [ $(VERSION) -ge 3 \
  65                 -o \( $(VERSION) -eq 2 -a $(PATCHLEVEL) -ge 6 -a $(SUBLEVEL) -ge 33 \) ] ; then \
  66                 echo "lttng-context-perf-counters.o" ; fi;)
  67 endif # CONFIG_PERF_EVENTS
  68
  69 lttng-tracer-objs += $(shell \
  70         if [ $(VERSION) -ge 4 \
  71                 -o \( $(VERSION) -eq 3 -a $(PATCHLEVEL) -ge 15 -a $(SUBLEVEL) -ge 0 \) ] ; then \
  72                 echo "lttng-tracepoint.o" ; fi;)
  73
  74 obj-m += lttng-statedump.o
  75 lttng-statedump-objs := lttng-statedump-impl.o wrapper/irqdesc.o \
  76                         wrapper/fdtable.o
  77
  78 obj-m += probes/
  79 obj-m += lib/
  80
  81 else # KERNELRELEASE
  82         KERNELDIR ?= /lib/modules/$(shell uname -r)/build
  83         PWD := $(shell pwd)
  84         CFLAGS = $(EXTCFLAGS)
  85
  86 default:
  87         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) modules
  88
  89 modules_install:
  90         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install
  91
  92 clean:
  93         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) clean
  94
  95 %.i: %.c
  96         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) $@
  97 endif # KERNELRELEASE