Hi Alexander, Looking at that Makefile: # Use make M=dir to specify directory of external module to build # Old syntax make ... SUBDIRS=$PWD is still supported # Setting the environment variable KBUILD_EXTMOD take precedence ifdef SUBDIRS KBUILD_EXTMOD ?= $(SUBDIRS) endif ifeq ("$(origin M)", "command line") KBUILD_EXTMOD := $(M) endif So specifying KBUILD_EXTMOD or M is the same thing, which tells KBUILD the directory that the Makefile for the module is in. And by default, KBUILD will build the module in KBUILD_EXTMOD. What I want is tell KBUILD to build the modules in a specified directory. Regards. On Jan 2, 2017, 20:30 +0800, Alexander Kapshuk <alexander.kapshuk@gmail.com>, wrote:
On Mon, Jan 2, 2017 at 1:39 PM, Shiyao Ma <i@introo.me> wrote:
Hi,
When building an external module, for example, given this command, all: $(MAKE) -C $(KDIR) M=$$PWD
It will build the ko file in the $PWD.
How to specify a location for the .ko files?
Regards.
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Perhaps KBUILD_EXTMOD is what you're looking for.
/path/to/kernel/sources/Makefile:183,185 # Use make M=dir to specify directory of external module to build # Old syntax make ... SUBDIRS=$PWD is still supported # Setting the environment variable KBUILD_EXTMOD take precedence