Messages in this thread Patch in this message | | | From | Wang Nan <> | Subject | [PATCH v6 03/16] perf: bpf: Fix build breakage due to libbpf | Date | Thu, 17 Dec 2015 10:55:11 +0000 |
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From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
perf build is currently (v4.4-rc5) broken on powerpc:
bpf.c:28:4: error: #error __NR_bpf not defined. libbpf does not support your arch. # error __NR_bpf not defined. libbpf does not support your arch. ^
Fix this by including tools/scripts/Makefile.arch for the proper $ARCH macro. While at it, remove redundant LP64 macro definition.
Also, since libbpf require $(srctree) now, detect the path of srctree like perf.
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Wang Nan <wangnan0@huawei.com> [Use tools/scripts/Makefile.arch] Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> --- tools/lib/bpf/Makefile | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile index 636e3dd..0b6e013 100644 --- a/tools/lib/bpf/Makefile +++ b/tools/lib/bpf/Makefile @@ -6,6 +6,12 @@ BPF_EXTRAVERSION = 1 MAKEFLAGS += --no-print-directory +ifeq ($(srctree),) +srctree := $(patsubst %/,%,$(dir $(shell pwd))) +srctree := $(patsubst %/,%,$(dir $(srctree))) +srctree := $(patsubst %/,%,$(dir $(srctree))) +#$(info Determined 'srctree' to be $(srctree)) +endif # Makefiles suck: This macro sets a default value of $(2) for the # variable named by $(1), unless the variable has been set by @@ -31,7 +37,8 @@ INSTALL = install DESTDIR ?= DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))' -LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1) +include $(srctree)/tools/scripts/Makefile.arch + ifeq ($(LP64), 1) libdir_relative = lib64 else -- 1.8.3.4
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