X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=instrumentation%2Fsyscalls%2Flttng-syscalls-extractor%2FMakefile;h=b3e9c43117007c8700996b8bdda65afad019be9b;hb=cf77d12083b5092eca8c6f9899ec0892756845aa;hp=4beb88c05c3ad11433133fe2a02dd1e256d6e6f2;hpb=daaf627aaa66c434d9274c6616977a6edc07b6ca;p=lttng-modules.git

diff --git a/instrumentation/syscalls/lttng-syscalls-extractor/Makefile b/instrumentation/syscalls/lttng-syscalls-extractor/Makefile
index 4beb88c0..b3e9c431 100644
--- a/instrumentation/syscalls/lttng-syscalls-extractor/Makefile
+++ b/instrumentation/syscalls/lttng-syscalls-extractor/Makefile
@@ -1 +1,31 @@
-obj-m += lttng-syscalls-extractor.o
+# SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
+
+ifneq ($(KERNELRELEASE),)
+
+  # This part of the Makefile is used when called by the kernel build system
+  # and defines the modules to be built.
+
+  obj-m += lttng-syscalls-extractor.o
+
+else # KERNELRELEASE
+
+# This part of the Makefile is used when the 'make' command is runned in the
+# base directory of the lttng-modules sources. It sets some environment and
+# calls the kernel build system to build the actual modules.
+
+KERNELDIR ?= /lib/modules/$(shell uname -r)/build
+PWD := $(shell pwd)
+CFLAGS = $(EXTCFLAGS)
+
+default: modules
+
+modules:
+	$(MAKE) -C $(KERNELDIR) M=$(PWD) modules
+
+clean:
+	$(MAKE) -C $(KERNELDIR) M=$(PWD) clean
+
+%.i: %.c
+	$(MAKE) -C $(KERNELDIR) M=$(PWD) $@
+
+endif # KERNELRELEASE