Fix: timer_expire_entry changed in 4.19.312

[lttng-modules.git] / Makefile

diff --git a/Makefile b/Makefile
index 169b7cdd89eb2132353827d917607a8415b32f0d..8d25816cc053e03e6d8707fc281b0687bf9b81e9 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,36 +1,66 @@
-#
-# Makefile for the LTT objects.
-#
+# SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
 
 ifneq ($(KERNELRELEASE),)
-ifneq ($(CONFIG_TRACEPOINTS),)
 
-obj-m += ltt-ring-buffer-client-discard.o
-obj-m += ltt-ring-buffer-client-overwrite.o
-obj-m += ltt-ring-buffer-metadata-client.o
+# This part of the Makefile is used when called by the kernel build system
+# and defines the modules to be built.
 
-obj-m += ltt-relay.o
-ltt-relay-objs :=  ltt-events.o ltt-debugfs-abi.o \
-                       ltt-probes.o ltt-core.o ltt-context.o
+obj-$(CONFIG_LTTNG) += src/
 
-obj-m += probes/
-obj-m += lib/
+else # KERNELRELEASE
 
+# This part of the Makefile is used when the 'make' command is runned in the
+# base directory of the lttng-modules sources. It sets some environment and
+# calls the kernel build system to build the actual modules.
+
+KERNELDIR ?= /lib/modules/$(shell uname -r)/build
+PWD := $(shell pwd)
+
+# 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
 
-else
-       KERNELDIR ?= /lib/modules/$(shell uname -r)/build
-       PWD := $(shell pwd)
-       CFLAGS = $(EXTCFLAGS)
+default: modules
+
+modules:
+       $(MAKE) -C $(KERNELDIR) M=$(PWD)/src \
+               CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m \
+               KCPPFLAGS='$(LKCPPFLAGS)' \
+               modules
 
-default:
-       $(MAKE) -C $(KERNELDIR) M=$(PWD) 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) modules_install
-       /sbin/depmod -a
+       $(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
 
-endif
+# 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 \
+               KCPPFLAGS='$(LKCPPFLAGS)' \
+               $@
+
+%.o: %.c
+       $(MAKE) -C $(KERNELDIR) M=$(PWD) \
+               CONFIG_LTTNG=m CONFIG_LTTNG_CLOCK_PLUGIN_TEST=m \
+               KCPPFLAGS='$(LKCPPFLAGS)' \
+               $@
+
+endif # KERNELRELEASE