Makefile

   1 # SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
   2
   3 ifneq ($(KERNELRELEASE),)
   4
   5 # This part of the Makefile is used when called by the kernel build system
   6 # and defines the modules to be built.
   7
   8 obj-$(CONFIG_LTTNG) += src/
   9
  10 else # KERNELRELEASE
  11
  12 # This part of the Makefile is used when the 'make' command is runned in the
  13 # base directory of the lttng-modules sources. It sets some environment and
  14 # calls the kernel build system to build the actual modules.
  15
  16 KERNELDIR ?= /lib/modules/$(shell uname -r)/build
  17 PWD := $(shell pwd)
  18
  19 default: modules
  20
  21 modules:
  22         $(MAKE) -C $(KERNELDIR) M=$(PWD)/src CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m modules
  23
  24 modules_install:
  25         $(MAKE) -C $(KERNELDIR) M=$(PWD)/src CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m modules_install
  26
  27 clean:
  28         $(MAKE) -C $(KERNELDIR) M=$(PWD)/src clean
  29
  30 # The following targets are used for development and debugging. They are not
  31 # part of the build system.
  32 %.i: %.c
  33         $(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m $@
  34
  35 %.o: %.c
  36         $(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m $@
  37
  38 endif # KERNELRELEASE