Makefile

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