| Message ID | 20160426162727.22962.51631.stgit@firesoul (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Tue, Apr 26, 2016 at 06:27:27PM +0200, Jesper Dangaard Brouer wrote: > It is not intuitive that 'make' must be run from the top level > directory with argument "samples/bpf/" to compile these eBPF samples. > > Introduce a kbuild make file trick that allow make to be run from the > "samples/bpf/" directory itself. It basically change to the top level > directory and call "make samples/bpf/" with the "/" slash after the > directory name. > > Also add a clean target that only cleans this directory, by taking > advantage of the kbuild external module setting M=$PWD. > > Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Acked-by: Alexei Starovoitov <ast@kernel.org> -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile index 45859c99f573..dd63521832d8 100644 --- a/samples/bpf/Makefile +++ b/samples/bpf/Makefile @@ -85,6 +85,14 @@ HOSTLOADLIBES_test_overhead += -lelf -lrt # make samples/bpf/ LLC=~/git/llvm/build/bin/llc LLC ?= llc +# Trick to allow make to be run from this directory +all: + $(MAKE) -C ../../ $$PWD/ + +clean: + $(MAKE) -C ../../ M=$$PWD clean + @rm -f *~ + # Verify LLVM compiler is available and bpf target is supported .PHONY: verify_cmd_llc verify_target_bpf diff --git a/samples/bpf/README.rst b/samples/bpf/README.rst index c7ccf553af0d..1ec4b08a7b40 100644 --- a/samples/bpf/README.rst +++ b/samples/bpf/README.rst @@ -47,6 +47,9 @@ For compiling goto kernel top level build directory and run make like:: Do notice the "/" slash after the directory name. +It is also possible to call make from this directory. This will just +hide the the invocation of make as above with the appended "/". + Manually compiling LLVM with 'bpf' support ------------------------------------------
It is not intuitive that 'make' must be run from the top level directory with argument "samples/bpf/" to compile these eBPF samples. Introduce a kbuild make file trick that allow make to be run from the "samples/bpf/" directory itself. It basically change to the top level directory and call "make samples/bpf/" with the "/" slash after the directory name. Also add a clean target that only cleans this directory, by taking advantage of the kbuild external module setting M=$PWD. Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> --- samples/bpf/Makefile | 8 ++++++++ samples/bpf/README.rst | 3 +++ 2 files changed, 11 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html