| 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 | # Experimental bitwise enum defaults to disabled. |
| 20 | CONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM ?= n |
| 21 | |
| 22 | # Emulate Kconfig behavior of setting defines for config options. |
| 23 | LKCPPFLAGS = $(KCPPFLAGS) |
| 24 | ifeq ($(CONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM),y) |
| 25 | LKCPPFLAGS += -DCONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM=y |
| 26 | endif |
| 27 | |
| 28 | default: modules |
| 29 | |
| 30 | modules: |
| 31 | $(MAKE) -C $(KERNELDIR) M=$(PWD)/src \ |
| 32 | CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m \ |
| 33 | KCPPFLAGS='$(LKCPPFLAGS)' \ |
| 34 | modules |
| 35 | |
| 36 | syscalls_extractor: |
| 37 | $(MAKE) -C $(KERNELDIR) M=$(PWD)/src \ |
| 38 | CONFIG_LTTNG_SYSCALLS_EXTRACTOR=m \ |
| 39 | CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m \ |
| 40 | KCPPFLAGS='$(LKCPPFLAGS)' \ |
| 41 | modules |
| 42 | |
| 43 | modules_install: |
| 44 | $(MAKE) -C $(KERNELDIR) M=$(PWD)/src \ |
| 45 | CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m \ |
| 46 | KCPPFLAGS='$(LKCPPFLAGS)' \ |
| 47 | modules_install |
| 48 | |
| 49 | clean: |
| 50 | $(MAKE) -C $(KERNELDIR) M=$(PWD)/src clean |
| 51 | |
| 52 | # The following targets are used for development and debugging. They are not |
| 53 | # part of the build system. |
| 54 | %.i: %.c |
| 55 | $(MAKE) -C $(KERNELDIR) M=$(PWD) \ |
| 56 | CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m \ |
| 57 | KCPPFLAGS='$(LKCPPFLAGS)' \ |
| 58 | $@ |
| 59 | |
| 60 | %.o: %.c |
| 61 | $(MAKE) -C $(KERNELDIR) M=$(PWD) \ |
| 62 | CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m \ |
| 63 | KCPPFLAGS='$(LKCPPFLAGS)' \ |
| 64 | $@ |
| 65 | |
| 66 | endif # KERNELRELEASE |