From: Alexei Starovoitov <ast@plumgrid.com>
To: pi3orama <pi3orama@163.com>
Cc: Wang Nan <wangnan0@huawei.com>,
"acme@kernel.org" <acme@kernel.org>,
"brendan.d.gregg@gmail.com" <brendan.d.gregg@gmail.com>,
"daniel@iogearbox.net" <daniel@iogearbox.net>,
"namhyung@kernel.org" <namhyung@kernel.org>,
"masami.hiramatsu.pt@hitachi.com"
<masami.hiramatsu.pt@hitachi.com>,
"paulus@samba.org" <paulus@samba.org>,
"a.p.zijlstra@chello.nl" <a.p.zijlstra@chello.nl>,
"mingo@redhat.com" <mingo@redhat.com>,
"jolsa@kernel.org" <jolsa@kernel.org>,
"dsahern@gmail.com" <dsahern@gmail.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"lizefan@huawei.com" <lizefan@huawei.com>,
"hekuang@huawei.com" <hekuang@huawei.com>,
"xiakaixu@huawei.com" <xiakaixu@huawei.com>
Subject: Re: [RFC PATCH v7 23/37] perf tools: Introduce llvm config options
Date: Fri, 12 Jun 2015 21:43:37 -0700 [thread overview]
Message-ID: <557BB4F9.6020008@plumgrid.com> (raw)
In-Reply-To: <C31FA58A-5D08-4966-8921-F6A9ED05FAA8@163.com>
On 6/12/15 9:11 PM, pi3orama wrote:
>
>
> 发自我的 iPhone
>
>> 在 2015年6月13日，上午10:31，Alexei Starovoitov <ast@plumgrid.com> 写道：
>>
>>> On 6/11/15 10:35 PM, Wang Nan wrote:
>>> # Path to clang. If omit, search it from $PATH.
>>> clang-path = "/path/to/clang"
>>
>> I think this bit and search_program() from the next patch is
>> overly flexible. It's always delicate to search file paths.
>
> About this clang-path: in my environment the name of clang is x86_64-oe-linux-clang, and installed in /usr/bin/llvm-3.7, neither in $PATH nor has its default name. This is the default setting of yocto and open-embedded based systems. Please see do_install part in building script of it:
>
> https://github.com/openembedded/meta-oe/blob/master/meta-oe/recipes-core/llvm/llvm.inc
well, that setup installs host backend only due to:
--enable-targets=host-only
in the above script,
whereas typical clang install on ubuntu/fedora includes all backends.
So in your case you'd need to install another clang.
I agree that the name can be different than just 'clang',
so yeah 'clang-path' is needed for this reason.
So I'm ok keeping patches 23 and 24 as-is.
next prev parent reply other threads:[~2015-06-13 4:43 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-12 5:35 [RFC PATCH v7 00/37] perf tools: filtering events using eBPF programs Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 01/37] tools build: Add feature check for eBPF API Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 02/37] bpf tools: Introduce 'bpf' library to tools Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 03/37] bpf tools: Allow caller to set printing function Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 04/37] bpf tools: Open eBPF object file and do basic validation Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 05/37] bpf tools: Read eBPF object from buffer Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 06/37] bpf tools: Check endianess and make libbpf fail early Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 07/37] bpf tools: Iterate over ELF sections to collect information Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 08/37] bpf tools: Collect version and license from ELF sections Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 09/37] bpf tools: Collect map definitions from 'maps' section Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 10/37] bpf tools: Collect symbol table from SHT_SYMTAB section Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 11/37] bpf tools: Collect eBPF programs from their own sections Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 12/37] bpf tools: Collect relocation sections from SHT_REL sections Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 13/37] bpf tools: Record map accessing instructions for each program Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 14/37] bpf tools: Add bpf.c/h for common bpf operations Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 15/37] bpf tools: Create eBPF maps defined in an object file Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 16/37] bpf tools: Relocate eBPF programs Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 17/37] bpf tools: Introduce bpf_load_program() to bpf.c Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 18/37] bpf tools: Load eBPF programs in object files into kernel Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 19/37] bpf tools: Introduce accessors for struct bpf_program Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 20/37] bpf tools: Introduce accessors for struct bpf_object Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 21/37] bpf tools: Link all bpf objects onto a list Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 22/37] perf tools: Make perf depend on libbpf Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 23/37] perf tools: Introduce llvm config options Wang Nan
2015-06-13 2:31 ` Alexei Starovoitov
2015-06-13 2:52 ` pi3orama
2015-06-13 3:03 ` Alexei Starovoitov
2015-06-13 3:31 ` pi3orama
2015-06-13 4:11 ` pi3orama
2015-06-13 4:43 ` Alexei Starovoitov [this message]
2015-06-12 5:35 ` [RFC PATCH v7 24/37] perf tools: Call clang to compile C source to object code Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 25/37] perf tests: Add LLVM test for eBPF on-the-fly compiling Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 26/37] perf tools: Auto detecting kernel build directory Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 27/37] perf tools: Auto detecting kernel include options Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 28/37] perf record: Enable passing bpf object file to --event Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 29/37] perf record: Compile scriptlets if pass '.c' " Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 30/37] perf tools: Parse probe points of eBPF programs during preparation Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 31/37] perf probe: Attach trace_probe_event with perf_probe_event Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 32/37] perf record: Probe at kprobe points Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 33/37] perf record: Load all eBPF object into kernel Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 34/37] perf tools: Add bpf_fd field to evsel and config it Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 35/37] perf tools: Attach eBPF program to perf event Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 36/37] perf tools: Suppress probing messages when probing by BPF loading Wang Nan
2015-06-12 5:35 ` [RFC PATCH v7 37/37] perf record: Add clang options for compiling BPF scripts Wang Nan
2015-06-12 6:08 ` Wangnan (F)
2015-06-12 6:29 ` [RFC PATCH v7 37/37 -fix] " Wang Nan
2015-06-12 16:58 ` [RFC PATCH v7 00/37] perf tools: filtering events using eBPF programs Alexei Starovoitov
2015-06-16 5:22 ` Wangnan (F)
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