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 $(MAKEFILEDIR)/Makefile.ABI.workarounds
  32
  33 obj-m += lttng-ring-buffer-client-discard.o
  34 obj-m += lttng-ring-buffer-client-overwrite.o
  35 obj-m += lttng-ring-buffer-metadata-client.o
  36 obj-m += lttng-ring-buffer-client-mmap-discard.o
  37 obj-m += lttng-ring-buffer-client-mmap-overwrite.o
  38 obj-m += lttng-ring-buffer-metadata-mmap-client.o
  39
  40 obj-m += lttng-tracer.o
  41 lttng-tracer-objs :=  lttng-events.o lttng-abi.o \
  42                         lttng-probes.o lttng-context.o \
  43                         lttng-context-pid.o lttng-context-procname.o \
  44                         lttng-context-prio.o lttng-context-nice.o \
  45                         lttng-context-vpid.o lttng-context-tid.o \
  46                         lttng-context-vtid.o lttng-context-ppid.o \
  47                         lttng-context-vppid.o lttng-calibrate.o \
  48                         lttng-context-hostname.o wrapper/random.o \
  49                         probes/lttng.o wrapper/trace-clock.o \
  50                         wrapper/page_alloc.o
  51
  52 obj-m += lttng-statedump.o
  53 lttng-statedump-objs := lttng-statedump-impl.o wrapper/irqdesc.o \
  54                         wrapper/fdtable.o
  55
  56 ifneq ($(CONFIG_HAVE_SYSCALL_TRACEPOINTS),)
  57 lttng-tracer-objs += lttng-syscalls.o probes/lttng-probe-user.o
  58 endif # CONFIG_HAVE_SYSCALL_TRACEPOINTS
  59
  60 ifneq ($(CONFIG_PERF_EVENTS),)
  61 lttng-tracer-objs += $(shell \
  62         if [ $(VERSION) -ge 3 \
  63                 -o \( $(VERSION) -eq 2 -a $(PATCHLEVEL) -ge 6 -a $(SUBLEVEL) -ge 33 \) ] ; then \
  64                 echo "lttng-context-perf-counters.o" ; fi;)
  65 endif # CONFIG_PERF_EVENTS
  66
  67 lttng-tracer-objs += $(shell \
  68         if [ $(VERSION) -ge 4 \
  69                 -o \( $(VERSION) -eq 3 -a $(PATCHLEVEL) -ge 15 -a $(SUBLEVEL) -ge 0 \) ] ; then \
  70                 echo "lttng-tracepoint.o" ; fi;)
  71
  72 obj-m += probes/
  73 obj-m += lib/
  74
  75 else # KERNELRELEASE
  76         KERNELDIR ?= /lib/modules/$(shell uname -r)/build
  77         PWD := $(shell pwd)
  78         CFLAGS = $(EXTCFLAGS)
  79
  80 default: modules
  81
  82 modules:
  83         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) modules
  84
  85 modules_install:
  86         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install
  87
  88 clean:
  89         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) clean
  90
  91 %.i: %.c
  92         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) $@
  93 endif # KERNELRELEASE