ifneq ($(KERNELRELEASE),)
- # This part of the Makefile is used when called by the kernel build system
- # and defines the modules to be built.
-
- ifdef CONFIG_LOCALVERSION # Check if dot-config is included.
- ifeq ($(CONFIG_TRACEPOINTS),)
- $(error The option CONFIG_TRACEPOINTS needs to be enabled in your kernel configuration)
- endif # CONFIG_TRACEPOINTS
- endif # ifdef CONFIG_LOCALVERSION
-
- TOP_LTTNG_MODULES_DIR := $(shell dirname $(lastword $(MAKEFILE_LIST)))
-
- lttng_check_linux_version = $(shell pwd)/include/linux/version.h
- lttng_check_generated_linux_version = $(shell pwd)/include/generated/uapi/linux/version.h
-
- #
- # Check for stale version.h, which can be a leftover from an old Linux
- # kernel tree moved to a newer kernel version, only pruned by make
- # distclean.
- #
- ifneq ($(wildcard $(lttng_check_linux_version)),)
- ifneq ($(wildcard $(lttng_check_generated_linux_version)),)
- $(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 $(lttng_check_linux_version) file)
- endif
- endif
-
- obj-$(CONFIG_LTTNG) += src/
- obj-$(CONFIG_LTTNG) += tests/
+# This part of the Makefile is used when called by the kernel build system
+# and defines the modules to be built.
+
+obj-$(CONFIG_LTTNG) += src/
else # KERNELRELEASE
KERNELDIR ?= /lib/modules/$(shell uname -r)/build
PWD := $(shell pwd)
-CFLAGS = $(EXTCFLAGS)
+
+# Experimental bitwise enum defaults to disabled.
+CONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM ?= n
+
+# Emulate Kconfig behavior of setting defines for config options.
+LKCPPFLAGS = $(KCPPFLAGS)
+ifeq ($(CONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM),y)
+LKCPPFLAGS += -DCONFIG_LTTNG_EXPERIMENTAL_BITWISE_ENUM=y
+endif
default: modules
modules:
- $(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m modules
+ $(MAKE) -C $(KERNELDIR) M=$(PWD)/src \
+ CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m \
+ KCPPFLAGS='$(LKCPPFLAGS)' \
+ modules
+
+syscalls_extractor:
+ $(MAKE) -C $(KERNELDIR) M=$(PWD)/src \
+ CONFIG_LTTNG_SYSCALLS_EXTRACTOR=m \
+ CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m \
+ KCPPFLAGS='$(LKCPPFLAGS)' \
+ modules
modules_install:
- $(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m modules_install
+ $(MAKE) -C $(KERNELDIR) M=$(PWD)/src \
+ CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m \
+ KCPPFLAGS='$(LKCPPFLAGS)' \
+ modules_install
clean:
- $(MAKE) -C $(KERNELDIR) M=$(PWD) clean
+ $(MAKE) -C $(KERNELDIR) M=$(PWD)/src clean
+# The following targets are used for development and debugging. They are not
+# part of the build system.
%.i: %.c
- $(MAKE) -C $(KERNELDIR) M=$(PWD) CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m $@
+ $(MAKE) -C $(KERNELDIR) M=$(PWD) \
+ CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m \
+ KCPPFLAGS='$(LKCPPFLAGS)' \
+ $@
+
+%.o: %.c
+ $(MAKE) -C $(KERNELDIR) M=$(PWD) \
+ CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m \
+ KCPPFLAGS='$(LKCPPFLAGS)' \
+ $@
endif # KERNELRELEASE