This patch contains a problem.
On 2015/12/15 11:35, Wang Nan wrote:
From: "Naveen N. Rao" <naveen.n....@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/perf/config/Makefile.arch for the proper
$ARCH macro. While at it, remove redundant LP64 macro definition.
Signed-off-by: Naveen N. Rao <naveen.n....@linux.vnet.ibm.com>
Signed-off-by: Wang Nan <wangn...@huawei.com>
Cc: Arnaldo Carvalho de Melo <a...@kernel.org>
Cc: Jiri Olsa <jo...@redhat.com>
Cc: Sukadev Bhattiprolu <suka...@linux.vnet.ibm.com>
---
tools/lib/bpf/Makefile | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/lib/bpf/Makefile b/tools/lib/bpf/Makefile
index 636e3dd..3d34a8c 100644
--- a/tools/lib/bpf/Makefile
+++ b/tools/lib/bpf/Makefile
@@ -31,7 +31,8 @@ INSTALL = install
DESTDIR ?=
DESTDIR_SQ = '$(subst ','\'',$(DESTDIR))'
-LP64 := $(shell echo __LP64__ | ${CC} ${CFLAGS} -E -x c - | tail -n 1)
+include $(srctree)/tools/scripts/Makefile.arch
+
Here we depend on $(srctree), but libbpf's Makefile doesn't automatically
detect it. Directly 'make' in libbpf directory causes an error.
Will post a v4 for it.
Thank you.
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