From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Luca Boccassi <bluca@debian.org>
Cc: dwarves@vger.kernel.org, Andrii Nakryiko <andrii.nakryiko@gmail.com>
Subject: Re: [PATCH dwarves] Add missing lib/include/bpf -> ../bpf/src symlink
Date: Sun, 13 Jun 2021 10:21:45 -0300 [thread overview]
Message-ID: <YMYGaUAjXmMm9lIO@kernel.org> (raw)
In-Reply-To: <YMYEmD7d00sj6UEx@kernel.org>
So, while testing this I noticed that if I _don't_ have
libbpf-devel/libbpf installed and ask for it _not_ to use the embedded
libbpf, it will build just file, using the embedded libbpf, shouldn't it
flatly fail in this case instead of just making this note:
-- Checking for module 'libbpf>=0.3.0'
-- Package 'libbpf', required by 'virtual:world', not found
?
- Arnaldo
⬢[acme@toolbox pahole]$ sudo rpm -e libbpf-devel
⬢[acme@toolbox pahole]$ sudo rpm -e libbpf
⬢[acme@toolbox pahole]$ rm -rf build ; mkdir build ; cd build ; cmake -D__LIB=lib -DCMAKE_BUILD_TYPE=Release -DLIBBPF_EMBEDDED=Off .. ; cd ..
-- The C compiler identification is GNU 11.1.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Found PkgConfig: /usr/bin/pkg-config (found version "1.7.3")
-- Checking for module 'libbpf>=0.3.0'
-- Package 'libbpf', required by 'virtual:world', not found
-- Setting BUILD_SHARED_LIBS = ON
-- Checking availability of DWARF and ELF development libraries
-- Looking for dwfl_module_build_id in elf
-- Looking for dwfl_module_build_id in elf - found
-- Found dwarf.h header: /usr/include
-- Found elfutils/libdw.h header: /usr/include
-- Found libdw library: /usr/lib64/libdw.so
-- Found libelf library: /usr/lib64/libelf.so
-- Checking availability of DWARF and ELF development libraries - done
-- Found ZLIB: /usr/lib64/libz.so (found version "1.2.11")
-- Submodule update
-- Submodule update - done
-- Performing Test HAVE_REALLOCARRAY_SUPPORT
-- Performing Test HAVE_REALLOCARRAY_SUPPORT - Success
-- Configuring done
-- Generating done
-- Build files have been written to: /var/home/acme/git/pahole/build
⬢[acme@toolbox pahole]$ make -C build
make: Entering directory '/var/home/acme/git/pahole/build'
make[1]: Entering directory '/var/home/acme/git/pahole/build'
make[2]: Entering directory '/var/home/acme/git/pahole/build'
Scanning dependencies of target bpf
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
make[2]: Entering directory '/var/home/acme/git/pahole/build'
[ 1%] Building C object CMakeFiles/bpf.dir/lib/bpf/src/bpf.c.o
[ 3%] Building C object CMakeFiles/bpf.dir/lib/bpf/src/bpf_prog_linfo.c.o
[ 5%] Building C object CMakeFiles/bpf.dir/lib/bpf/src/btf.c.o
[ 7%] Building C object CMakeFiles/bpf.dir/lib/bpf/src/btf_dump.c.o
[ 9%] Building C object CMakeFiles/bpf.dir/lib/bpf/src/hashmap.c.o
[ 11%] Building C object CMakeFiles/bpf.dir/lib/bpf/src/libbpf.c.o
[ 13%] Building C object CMakeFiles/bpf.dir/lib/bpf/src/libbpf_errno.c.o
[ 15%] Building C object CMakeFiles/bpf.dir/lib/bpf/src/libbpf_probes.c.o
[ 17%] Building C object CMakeFiles/bpf.dir/lib/bpf/src/netlink.c.o
[ 19%] Building C object CMakeFiles/bpf.dir/lib/bpf/src/nlattr.c.o
[ 21%] Building C object CMakeFiles/bpf.dir/lib/bpf/src/ringbuf.c.o
[ 23%] Building C object CMakeFiles/bpf.dir/lib/bpf/src/str_error.c.o
[ 25%] Building C object CMakeFiles/bpf.dir/lib/bpf/src/xsk.c.o
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
[ 25%] Built target bpf
make[2]: Entering directory '/var/home/acme/git/pahole/build'
Scanning dependencies of target dwarves
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
make[2]: Entering directory '/var/home/acme/git/pahole/build'
[ 26%] Building C object CMakeFiles/dwarves.dir/dwarves.c.o
[ 28%] Building C object CMakeFiles/dwarves.dir/dwarves_fprintf.c.o
[ 30%] Building C object CMakeFiles/dwarves.dir/gobuffer.c.o
[ 32%] Building C object CMakeFiles/dwarves.dir/strings.c.o
[ 34%] Building C object CMakeFiles/dwarves.dir/ctf_encoder.c.o
[ 36%] Building C object CMakeFiles/dwarves.dir/ctf_loader.c.o
[ 38%] Building C object CMakeFiles/dwarves.dir/libctf.c.o
[ 40%] Building C object CMakeFiles/dwarves.dir/btf_encoder.c.o
[ 42%] Building C object CMakeFiles/dwarves.dir/btf_loader.c.o
[ 44%] Building C object CMakeFiles/dwarves.dir/dwarf_loader.c.o
[ 46%] Building C object CMakeFiles/dwarves.dir/dutil.c.o
[ 48%] Building C object CMakeFiles/dwarves.dir/elf_symtab.c.o
[ 50%] Building C object CMakeFiles/dwarves.dir/rbtree.c.o
[ 51%] Linking C shared library libdwarves.so
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
[ 51%] Built target dwarves
make[2]: Entering directory '/var/home/acme/git/pahole/build'
Scanning dependencies of target syscse
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
make[2]: Entering directory '/var/home/acme/git/pahole/build'
[ 53%] Building C object CMakeFiles/syscse.dir/syscse.c.o
[ 55%] Linking C executable syscse
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
[ 55%] Built target syscse
make[2]: Entering directory '/var/home/acme/git/pahole/build'
Scanning dependencies of target codiff
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
make[2]: Entering directory '/var/home/acme/git/pahole/build'
[ 57%] Building C object CMakeFiles/codiff.dir/codiff.c.o
[ 59%] Linking C executable codiff
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
[ 59%] Built target codiff
make[2]: Entering directory '/var/home/acme/git/pahole/build'
Scanning dependencies of target dtagnames
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
make[2]: Entering directory '/var/home/acme/git/pahole/build'
[ 61%] Building C object CMakeFiles/dtagnames.dir/dtagnames.c.o
[ 63%] Linking C executable dtagnames
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
[ 63%] Built target dtagnames
make[2]: Entering directory '/var/home/acme/git/pahole/build'
Scanning dependencies of target scncopy
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
make[2]: Entering directory '/var/home/acme/git/pahole/build'
[ 65%] Building C object CMakeFiles/scncopy.dir/scncopy.c.o
[ 67%] Building C object CMakeFiles/scncopy.dir/elfcreator.c.o
[ 69%] Linking C executable scncopy
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
[ 69%] Built target scncopy
make[2]: Entering directory '/var/home/acme/git/pahole/build'
Scanning dependencies of target dwarves_emit
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
make[2]: Entering directory '/var/home/acme/git/pahole/build'
[ 71%] Building C object CMakeFiles/dwarves_emit.dir/dwarves_emit.c.o
[ 73%] Linking C shared library libdwarves_emit.so
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
[ 73%] Built target dwarves_emit
make[2]: Entering directory '/var/home/acme/git/pahole/build'
Scanning dependencies of target dwarves_reorganize
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
make[2]: Entering directory '/var/home/acme/git/pahole/build'
[ 75%] Building C object CMakeFiles/dwarves_reorganize.dir/dwarves_reorganize.c.o
[ 76%] Linking C shared library libdwarves_reorganize.so
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
[ 76%] Built target dwarves_reorganize
make[2]: Entering directory '/var/home/acme/git/pahole/build'
Scanning dependencies of target ctracer
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
make[2]: Entering directory '/var/home/acme/git/pahole/build'
[ 78%] Building C object CMakeFiles/ctracer.dir/ctracer.c.o
[ 80%] Linking C executable ctracer
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
[ 80%] Built target ctracer
make[2]: Entering directory '/var/home/acme/git/pahole/build'
Scanning dependencies of target pdwtags
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
make[2]: Entering directory '/var/home/acme/git/pahole/build'
[ 82%] Building C object CMakeFiles/pdwtags.dir/pdwtags.c.o
[ 84%] Linking C executable pdwtags
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
[ 84%] Built target pdwtags
make[2]: Entering directory '/var/home/acme/git/pahole/build'
Scanning dependencies of target pahole
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
make[2]: Entering directory '/var/home/acme/git/pahole/build'
[ 86%] Building C object CMakeFiles/pahole.dir/pahole.c.o
[ 88%] Linking C executable pahole
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
[ 88%] Built target pahole
make[2]: Entering directory '/var/home/acme/git/pahole/build'
Scanning dependencies of target pfunct
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
make[2]: Entering directory '/var/home/acme/git/pahole/build'
[ 90%] Building C object CMakeFiles/pfunct.dir/pfunct.c.o
[ 92%] Linking C executable pfunct
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
[ 92%] Built target pfunct
make[2]: Entering directory '/var/home/acme/git/pahole/build'
Scanning dependencies of target pglobal
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
make[2]: Entering directory '/var/home/acme/git/pahole/build'
[ 94%] Building C object CMakeFiles/pglobal.dir/pglobal.c.o
[ 96%] Linking C executable pglobal
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
[ 96%] Built target pglobal
make[2]: Entering directory '/var/home/acme/git/pahole/build'
Scanning dependencies of target prefcnt
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
make[2]: Entering directory '/var/home/acme/git/pahole/build'
[ 98%] Building C object CMakeFiles/prefcnt.dir/prefcnt.c.o
[100%] Linking C executable prefcnt
make[2]: Leaving directory '/var/home/acme/git/pahole/build'
[100%] Built target prefcnt
make[1]: Leaving directory '/var/home/acme/git/pahole/build'
make: Leaving directory '/var/home/acme/git/pahole/build'
⬢[acme@toolbox pahole]$
next prev parent reply other threads:[~2021-06-13 13:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-11 23:01 [PATCH dwarves] Add missing lib/include/bpf -> ../bpf/src symlink Luca Boccassi
2021-06-11 23:42 ` Andrii Nakryiko
2021-06-13 13:14 ` Arnaldo Carvalho de Melo
2021-06-13 13:17 ` Arnaldo Carvalho de Melo
2021-06-13 13:21 ` Arnaldo Carvalho de Melo [this message]
2021-06-13 13:27 ` Arnaldo Carvalho de Melo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=YMYGaUAjXmMm9lIO@kernel.org \
--to=acme@kernel.org \
--cc=andrii.nakryiko@gmail.com \
--cc=bluca@debian.org \
--cc=dwarves@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.