My guess is that Fedora's python build reports a different location
for where to install the libraries to. You can debug this by changing
the CMake to run sh -x when it calls the finalize swig wrapper classes
shell scripts. It might also be worth seeing what happens if you
define the CMake variable to use the new python-based SWIG API
generation. AFAIK nobody's ever tested this on non-Windows, but might
be worth checking out.
On Mon, Jul 21, 2014 at 7:03 AM, Todd Fiala <[email protected]
<mailto:[email protected]>> wrote:
Hey Matthew,
Great investigating! Glad you were able to at least find the core
of the issue, which does look like at least on Fedora Core 20
x86_64 we are doing something funky with configure/make. I'm not
sure why we're choosing lib64 there and lib on Ubuntu 14.04
x86_64, might have to do with how the python is configured. I
think that directory may be coming from a helper library in python
that determines the correct location for build output and has to
do with some Python finalizer scripts during the build process. I
won't be totally surprised if this might just be broken on Fedora
Core x86_64 regardless of cmake or configure-based builds.
I'll do a configure/make build on Ubuntu 14.04 x86_64 later today
to see if I'm getting the same results on configure/make - there
has been some changes in python handling more recently, generally
to support Windows builds, but we may have unintentionally
introduced that via those changes. At least that way we can see
if its consistent with configure/make or if it might just be
specific to Fedora Core.
Thanks for identifying that!
-Todd
On Mon, Jul 21, 2014 at 6:51 AM, Matthew Gardiner <[email protected]
<mailto:[email protected]>> wrote:
Todd,
I've since discovered that the cmake/ninja build system also
results in a lib and lib64 directory, with the liblldb.so and
other .sos in the lib folder but the
python2.7/site-packages/lldb under lib64. (In fact with cmake
build I see no python2.7 folder at all under lib, it's all
under lib64).
So Todd, focusing back on autoconf/make builds, after doing
the ./configure && make in the sibling build directory, do you
see for your linux 64-bit builds the
python2.7/site-packages/lldb under the lib64 sub-folder and
the lldb/llvm .sos under the lib64 sub-folder?
How do you get this to work:
tfiala@tfiala2:/mnt/ssd/work/macosx.sync/mbp-svn/build-debug/lib$
PYTHONPATH=`pwd`/python2.7/site-packages python
Python 2.7.6 (default, Mar 22 2014, 22:59:56)
[GCC 4.8.2] on linux2
Type "help", "copyright", "credits" or "license" for more
information.
>>> import lldb
>>> dir(lldb)
Do you run another script or make target after doing the basic
llvm/lldb make? That is to move python2.7/site-packages/lldb
underneath lib. I think that's what I'd have to do on my
system, since after the basic make my lib and lib64
directories have the following contents:
~/src/p4play/build/Debug+Asserts/lib/python2.7/site-packages
$ ls -al
total 32
drwxrwxr-x 2 mg11 mg11 4096 Jul 21 14:40 .
drwxrwxr-x 3 mg11 mg11 4096 Jul 21 14:40 ..
-rwxr-xr-x 1 mg11 mg11 21795 Jul 21 14:40 readline.so
$ cd ../../../lib64/python2.7/site-packages/
~/src/p4play/build/Debug+Asserts/lib64/python2.7/site-packages
$ ls -al
total 12
drwxrwxr-x 3 mg11 mg11 4096 Jul 21 14:42 .
drwxrwxr-x 3 mg11 mg11 4096 Jul 21 14:42 ..
drwxrwxr-x 5 mg11 mg11 4096 Jul 21 14:42 lldb
Any ideas?
Matt
Matthew Gardiner wrote:
Hi Todd,
Thanks for taking the time to come up with these tips.
First off my distro is Fedora Core 20 64-bit. So to
further my investigation I blew away all the sources, and
did svn co llvm, (lldb clang into llvm/tools), made the
sibling build dir, then did:
~/src/p4play/build
$ ../llvm/configure --enable-targets=x86_64
--enable-shared --enable-cxx11 --prefix=`pwd`/../install
&& make -j 8
After the successful build I do ldd. Basically lld finds
all dependencies for liblldb.so...
~/src/p4play/build/Debug+Asserts/lib
$ ldd liblldb.so
linux-vdso.so.1 => (0x00007fffa61fe000)
libLLVM-3.5svn.so <http://libLLVM-3.5svn.so> =>
/home/mg11/src/p4play/build/Debug+Asserts/lib/./libLLVM-3.5svn.so
<http://libLLVM-3.5svn.so> (0x00007f2e53405000)
libpthread.so.0 => /lib64/libpthread.so.0
(0x00007f2e531cc000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007f2e52fc8000)
libutil.so.1 => /lib64/libutil.so.1 (0x00007f2e52dc5000)
libpython2.7.so.1.0 => /lib64/libpython2.7.so.1.0
(0x00007f2e529fe000)
librt.so.1 => /lib64/librt.so.1 (0x00007f2e527f6000)
libedit.so.0 => /lib64/libedit.so.0 (0x00007f2e525ba000)
libncurses.so.5 => /lib64/libncurses.so.5
(0x00007f2e52392000)
libtinfo.so.5 => /lib64/libtinfo.so.5 (0x00007f2e52168000)
libpanel.so.5 => /lib64/libpanel.so.5 (0x00007f2e51f64000)
libz.so.1 => /lib64/libz.so.1 (0x00007f2e51d4d000)
libm.so.6 => /lib64/libm.so.6 (0x00007f2e51a46000)
libstdc++.so.6 => /lib64/libstdc++.so.6
(0x00007f2e5173e000)
libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f2e51527000)
libc.so.6 => /lib64/libc.so.6 (0x00007f2e51168000)
/lib64/ld-linux-x86-64.so.2 (0x0000003675a00000)
However, regarding python loading the lldb bindings I see
my build/Debug+Asserts has a lib and a lib64 folder.
~/src/p4play/build/Debug+Asserts
$ ls
bin lib lib64
If I try to import lldb when I have "lib" as my PYTHONPATH
i.e.
~/src/main/build/Debug+Asserts/lib
$ PYTHONPATH=`pwd`/python2.7/site-packages/ python
>>> import lldb
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named lldb
>>>
This is not surprising, since
~/src/main/build/Debug+Asserts/lib/python2.7/site-packages/ only
contains readline.so.
So I cd to lib64. This looks more promising since there is
a lldb folder below site-packages. So now I do "import
lldb" with "lib64" instead:
~/src/main/build/Debug+Asserts/lib64
$ PYTHONPATH=`pwd`/lib64/python2.7/site-packages/ python
Python 2.7.5 (default, Feb 19 2014, 13:47:28)
[GCC 4.8.2 20131212 (Red Hat 4.8.2-7)] on linux2
Type "help", "copyright", "credits" or "license" for more
information.
>>> import lldb
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File
"/home/mg11/src/main/build/Debug+Asserts/lib64/python2.7/site-packages/lldb/__init__.py",
line 52, in <module>
_lldb = swig_import_helper()
File
"/home/mg11/src/main/build/Debug+Asserts/lib64/python2.7/site-packages/lldb/__init__.py",
line 44, in swig_import_helper
import _lldb
ImportError: No module named _lldb
>>>
So cd to
~/src/p4play/build/Debug+Asserts/lib64/python2.7/site-packages/lldb,
and list:
~/src/p4play/build/Debug+Asserts/lib64/python2.7/site-packages/lldb
$ ls -l
total 1196
-rw-rw-r-- 1 mg11 mg11 3905 Jul 21 08:25
embedded_interpreter.py
drwxrwxr-x 3 mg11 mg11 4096 Jul 21 08:25 formatters
-rw-rw-r-- 1 mg11 mg11 495675 Jul 21 08:25 __init__.py
-rw-rw-r-- 1 mg11 mg11 708200 Jul 21 09:09 __init__.pyc
lrwxrwxrwx 1 mg11 mg11 19 Jul 21 08:25 _lldb.so ->
../../../liblldb.so !BROKEN SYMLINK!
drwxrwxr-x 2 mg11 mg11 4096 Jul 21 08:25 runtime
drwxrwxr-x 2 mg11 mg11 4096 Jul 21 08:25 utils
_lldb.so is broken above as the link above assumes
liblldb.so is just 3 dirs back. However, it isn't -
because it's not in lib64, *it's in lib*. So it looks like
things are getting a bit mashed up due to 32-bit/64-bit
directory issues. If I copy the .so files from lib to
lib64, then it fixes my broken sym-link issue. And I
progress a little further.
~/src/p4play/build/Debug+Asserts/lib64
$ PYTHONPATH=`pwd`/python2.7/site-packages python
Python 2.7.5 (default, Feb 19 2014, 13:47:28)
[GCC 4.8.2 20131212 (Red Hat 4.8.2-7)] on linux2
Type "help", "copyright", "credits" or "license" for more
information.
>>> import lldb
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File
"/home/mg11/src/p4play/build/Debug+Asserts/lib64/python2.7/site-packages/lldb/__init__.py",
line 52, in <module>
_lldb = swig_import_helper()
File
"/home/mg11/src/p4play/build/Debug+Asserts/lib64/python2.7/site-packages/lldb/__init__.py",
line 48, in swig_import_helper
_mod = imp.load_module('_lldb', fp, pathname, description)
ImportError: libLLVM-3.5svn.so <http://libLLVM-3.5svn.so>:
cannot open shared object file: No such file or directory
>>>
So now I push the location of these .sos into my
environment with LD_LIBRARY_PATH. Finally lldb imports!
~/src/p4play/build/Debug+Asserts/lib64
$ LD_LIBRARY_PATH=.
PYTHONPATH=`pwd`/python2.7/site-packages python
Python 2.7.5 (default, Feb 19 2014, 13:47:28)
[GCC 4.8.2 20131212 (Red Hat 4.8.2-7)] on linux2
Type "help", "copyright", "credits" or "license" for more
information.
>>> import lldb
>>> dir(lldb)
['INT32_MAX', 'LLDB_ARCH_DEFAULT',
... lots more ...
>>>
So, I think the crux of the problem I'm seeing here is
that on a 64-bit linux build (using autoconf/make) we get
the binaries distributed around the lib and lib64
sub-folders without adequate coordination with the test
tools. I'll retry now with cmake/ninja and see if my
experience differs.
Matt
Todd Fiala wrote:
Hey Matt,
(Adding back the list since these are general
troubleshooting tips for getting tests running).
Sorry you’re having so much trouble with this!
Ok so a few things to troubleshoot:
Regardless of the build system used, go to the build
output’s lib dir. Do this command:
ldd liblldb.so
That will spit out all the shared libraries that your
liblldb.so is trying to link against. The python
message your seeing will happen if python can’t find
the lldb module (as the message suggests and you were
tracing down), /or/ if it can find it but fails to
load it (which is often the case - something cannot be
found when the liblldb.so tries to load as a
consequence of the lldb python module trying to load).
You should see something that looks roughly like this:
|tfiala@tfiala2:/mnt/ssd/work/macosx.sync/mbp-svn/build-debug/lib$
ldd liblldb.so
linux-vdso.so.1 => (0x00007fffe9dfe000)
libstdc++.so.6 =>
/usr/lib/x86_64-linux-gnu/libstdc++.so.6
(0x00007f6357e71000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6
(0x00007f6357b6b000)
libedit.so.2 =>
/usr/lib/x86_64-linux-gnu/libedit.so.2
(0x00007f635793a000)
libpanel.so.5 =>
/usr/lib/x86_64-linux-gnu/libpanel.so.5
(0x00007f6357736000)
libncurses.so.5 =>
/lib/x86_64-linux-gnu/libncurses.so.5 (0x00007f6357513000)
libtinfo.so.5 =>
/lib/x86_64-linux-gnu/libtinfo.so.5 (0x00007f63572e9000)
libpython2.7.so.1.0 =>
/usr/lib/x86_64-linux-gnu/libpython2.7.so.1.0
(0x00007f6356d82000)
librt.so.1 =>
/lib/x86_64-linux-gnu/librt.so.1 (0x00007f6356b7a000)
libdl.so.2 =>
/lib/x86_64-linux-gnu/libdl.so.2 (0x00007f6356975000)
libpthread.so.0 =>
/lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f6356757000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1
(0x00007f635653e000)
libgcc_s.so.1 =>
/lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f6356327000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6
(0x00007f6355f61000)
/lib64/ld-linux-x86-64.so.2 (0x00007f635d584000)
libutil.so.1 =>
/lib/x86_64-linux-gnu/libutil.so.1 (0x00007f6355d5d000)
tfiala@tfiala2:/mnt/ssd/work/macosx.sync/mbp-svn/build-debug/lib$site-packages
|
The left side shows the short name that the .so is
referencing. The right side shows what the loader
actually mapped it to with the current environment. If
there is a problem loading liblldb.so, this will show
as (I think) question marks on the right side
indicating that the shared library linkage was not
found. Let me know if you see something like that.
If you get past this part and you don’t see any
issues, the next thing to try is:
PYTHONPATH=/path/to/your/lldb/lib/python2.7/site-packages
python
Then do an ‘import lldb’, then a ‘dir (lldb)’, like so:
|tfiala@tfiala2:/mnt/ssd/work/macosx.sync/mbp-svn/build-debug/lib$
PYTHONPATH=`pwd`/python2.7/site-packages python
Python 2.7.6 (default, Mar 22 2014, 22:59:56)
[GCC 4.8.2] on linux2
Type "help", "copyright", "credits" or "license" for
more information.
>>> import lldb
>>> dir(lldb)
['INT32_MAX', 'LLDB_ARCH_DEFAULT',
'LLDB_ARCH_DEFAULT_32BIT', 'LLDB_ARCH_DEFAULT_64BIT',
'LLDB_DEFAULT_BREAK_SIZE', 'LLDB_DEFAULT_SHELL',
'LLDB_GENERIC_ERROR', 'LLDB_INVALID_ADDRESS',
'LLDB_INVALID_BREAK_ID', 'LLDB_INVALID_CPUTYPE',
'LLDB_INVALID_FRAME_ID', 'LLDB_INVALID_IMAGE_TOKEN',
'LLDB_INVALID_INDEX32', 'LLDB_INVALID_IVAR_OFFSET',
'LLDB_INVALID_LINE_NUMBER',
'LLDB_INVALID_MODULE_VERSION', 'LLDB_INVALID_OFFSET',
'LLDB_INVALID_PROCESS_ID', 'LLDB_INVALID_QUEUE_ID',
'LLDB_INVALID_REGNUM', 'LLDB_INVALID_SIGNAL_NUMBER',
'LLDB_INVALID_THREAD_ID', 'LLDB_INVALID_UID',
'LLDB_INVALID_WATCH_ID', 'LLDB_MAX_NUM_OPTION_SETS',
'LLDB_OPT_SET_1',
... (lots of stuff removed)
|
That will tell you if you can load the lldb module
when you specify exactly where it should be. If you
can do this, the tests basically should not have
trouble loading lldb. (Obviously somewhere we’ll find
an issue here). If this does work, then we need to
trace why the python test runner calls are mixing up
the python path. In general you don’t need to specify
any options to the ninja/make commands to get the
tests to run from the build dir.
Can you refresh my memory on what Linux distro you’re
using and whether it’s 64 or 32 bit? (I don’t get over
to the 32-bit distros much these days).
I hope that gets us closer to finding out what’s up!
Keep me posted.
-Todd
On Fri, Jul 18, 2014 at 4:56 AM, Matthew Gardiner
<[email protected] <mailto:[email protected]>
<mailto:[email protected] <mailto:[email protected]>>> wrote:
Hi Todd,
Well I managed to get cmake and ninja working! I
needed (it would
appear) to download/build/install the latest
versions of both from
source. Then I do:
build $ cmake ../llvm/ -G Ninja
-DLLVM_TARGETS_TO_BUILD="X86"
-DBUILD_SHARED_LIBS=ON -DLLVM_ENABLE_CXX1Y=ON
...
build $ ninja
...
However "ninja check-lldb" still fails to find
lldb.py. It is does
get built, but the path which dotest.py uses to
find it is wrong
on my system. Anyway, I'm going to continue trying
to analyse it
myself for now. I'll probably post a new thread to
lldb-dev if I
continue to struggle.
Anyway, have a good weekend,
Matt
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