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 $(lttng_check_linux_version) file)
  28 endif
  29 endif
  30
  31 ifneq ($(shell \
  32         if [ $(VERSION) -ge 5 \
  33                 -o \( $(VERSION) -eq 4 -a $(PATCHLEVEL) -ge 8 \) ] ; then \
  34                 echo "true" ; fi;),)
  35 $(warning You are entering uncharted territories adventurer! Proceed with utmost caution (also, lttng-modules 2.7 does not support Linux >= 4.8. You should upgrade to a newer lttng-modules version.))
  36 endif
  37
  38 include $(MAKEFILEDIR)/Makefile.ABI.workarounds
  39
  40 obj-m += lttng-ring-buffer-client-discard.o
  41 obj-m += lttng-ring-buffer-client-overwrite.o
  42 obj-m += lttng-ring-buffer-metadata-client.o
  43 obj-m += lttng-ring-buffer-client-mmap-discard.o
  44 obj-m += lttng-ring-buffer-client-mmap-overwrite.o
  45 obj-m += lttng-ring-buffer-metadata-mmap-client.o
  46
  47 obj-m += lttng-tracer.o
  48 lttng-tracer-objs :=  lttng-events.o lttng-abi.o \
  49                         lttng-probes.o lttng-context.o \
  50                         lttng-context-pid.o lttng-context-procname.o \
  51                         lttng-context-prio.o lttng-context-nice.o \
  52                         lttng-context-vpid.o lttng-context-tid.o \
  53                         lttng-context-vtid.o lttng-context-ppid.o \
  54                         lttng-context-vppid.o lttng-context-cpu-id.o \
  55                         lttng-calibrate.o \
  56                         lttng-context-hostname.o wrapper/random.o \
  57                         probes/lttng.o wrapper/trace-clock.o \
  58                         wrapper/page_alloc.o \
  59                         lttng-tracker-pid.o \
  60                         lttng-filter.o lttng-filter-interpreter.o \
  61                         lttng-filter-specialize.o \
  62                         lttng-filter-validator.o \
  63                         probes/lttng-probe-user.o
  64
  65 ifneq ($(CONFIG_HAVE_SYSCALL_TRACEPOINTS),)
  66 lttng-tracer-objs += lttng-syscalls.o
  67 endif # CONFIG_HAVE_SYSCALL_TRACEPOINTS
  68
  69 ifneq ($(CONFIG_PERF_EVENTS),)
  70 lttng-tracer-objs += $(shell \
  71         if [ $(VERSION) -ge 3 \
  72                 -o \( $(VERSION) -eq 2 -a $(PATCHLEVEL) -ge 6 -a $(SUBLEVEL) -ge 33 \) ] ; then \
  73                 echo "lttng-context-perf-counters.o" ; fi;)
  74 endif # CONFIG_PERF_EVENTS
  75
  76 lttng-tracer-objs += $(shell \
  77         if [ $(VERSION) -ge 4 \
  78                 -o \( $(VERSION) -eq 3 -a $(PATCHLEVEL) -ge 15 -a $(SUBLEVEL) -ge 0 \) ] ; then \
  79                 echo "lttng-tracepoint.o" ; fi;)
  80
  81 obj-m += lttng-statedump.o
  82 lttng-statedump-objs := lttng-statedump-impl.o wrapper/irqdesc.o \
  83                         wrapper/fdtable.o
  84
  85 obj-m += probes/
  86 obj-m += lib/
  87
  88 else # KERNELRELEASE
  89         KERNELDIR ?= /lib/modules/$(shell uname -r)/build
  90         PWD := $(shell pwd)
  91         CFLAGS = $(EXTCFLAGS)
  92
  93 default: modules
  94
  95 modules:
  96         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) modules
  97
  98 modules_install:
  99         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install
 100
 101 clean:
 102         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) clean
 103
 104 %.i: %.c
 105         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) $@
 106 endif # KERNELRELEASE