Makefile

   1 #
   2 # Makefile for the LTT objects.
   3 #
   4
   5 ifneq ($(KERNELRELEASE),)
   6 ifneq ($(CONFIG_TRACEPOINTS),)
   7
   8 KERNELDIR=${LTTNG_KERNELDIR}
   9
  10 lttng_check_linux_version = $(shell pwd)/include/linux/version.h
  11 lttng_check_generated_linux_version = $(shell pwd)/include/generated/uapi/linux/version.h
  12
  13 #
  14 # Check for stale version.h, which can be a leftover from an old Linux
  15 # kernel tree moved to a newer kernel version, only pruned by make
  16 # distclean.
  17 #
  18 ifneq ($(wildcard $(lttng_check_linux_version)),)
  19 ifneq ($(wildcard $(lttng_check_generated_linux_version)),)
  20 $(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)
  21 endif
  22 endif
  23
  24 include $(KBUILD_EXTMOD)/Makefile.ABI.workarounds
  25
  26 obj-m += lttng-ring-buffer-client-discard.o
  27 obj-m += lttng-ring-buffer-client-overwrite.o
  28 obj-m += lttng-ring-buffer-metadata-client.o
  29 obj-m += lttng-ring-buffer-client-mmap-discard.o
  30 obj-m += lttng-ring-buffer-client-mmap-overwrite.o
  31 obj-m += lttng-ring-buffer-metadata-mmap-client.o
  32
  33 obj-m += lttng-tracer.o
  34 lttng-tracer-objs :=  lttng-events.o lttng-abi.o \
  35                         lttng-probes.o lttng-context.o \
  36                         lttng-context-pid.o lttng-context-procname.o \
  37                         lttng-context-prio.o lttng-context-nice.o \
  38                         lttng-context-vpid.o lttng-context-tid.o \
  39                         lttng-context-vtid.o lttng-context-ppid.o \
  40                         lttng-context-vppid.o lttng-calibrate.o \
  41                         lttng-context-hostname.o wrapper/random.o \
  42                         probes/lttng.o wrapper/trace-clock.o \
  43                         wrapper/page_alloc.o \
  44                         lttng-tracker-pid.o \
  45                         lttng-filter.o lttng-filter-interpreter.o \
  46                         lttng-filter-specialize.o \
  47                         lttng-filter-validator.o \
  48                         probes/lttng-probe-user.o
  49
  50 obj-m += lttng-statedump.o
  51 lttng-statedump-objs := lttng-statedump-impl.o wrapper/irqdesc.o \
  52                         wrapper/fdtable.o
  53
  54 ifneq ($(CONFIG_HAVE_SYSCALL_TRACEPOINTS),)
  55 lttng-tracer-objs += lttng-syscalls.o
  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 endif # CONFIG_TRACEPOINTS
  74
  75 else # KERNELRELEASE
  76         KERNELDIR ?= /lib/modules/$(shell uname -r)/build
  77         PWD := $(shell pwd)
  78         CFLAGS = $(EXTCFLAGS)
  79
  80 default:
  81         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) modules
  82
  83 modules_install:
  84         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) modules_install
  85
  86 clean:
  87         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) clean
  88
  89 %.i: %.c
  90         LTTNG_KERNELDIR=$(KERNELDIR) $(MAKE) -C $(KERNELDIR) M=$(PWD) $@
  91 endif # KERNELRELEASE