Fix: allow LTTng to be built within kernel tree

[lttng-modules.git] / Makefile

diff --git a/Makefile b/Makefile
index f233e660473b8b21167d8ecea5a4b3593fcdd692..7c878f0589209fa893b21a29709091e08e202380 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -5,11 +5,13 @@
 ifneq ($(KERNELRELEASE),)
 ifneq ($(CONFIG_TRACEPOINTS),)
 
-KERNELDIR=${LTTNG_KERNELDIR}
+KERNELDIR = ${LTTNG_KERNELDIR}
+MAKEFILEDIR = $(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
@@ -21,7 +23,7 @@ $(error Duplicate version.h files found in $(lttng_check_linux_version) and $(lt
 endif
 endif
 
-include $(KBUILD_EXTMOD)/Makefile.ABI.workarounds
+include $(MAKEFILEDIR)/Makefile.ABI.workarounds
 
 obj-m += lttng-ring-buffer-client-discard.o
 obj-m += lttng-ring-buffer-client-overwrite.o