[lldb-dev] Problems running the lldb tests on Fedora Core 20 - 64bit (email originally titled "Add kalimba as a platform.")
Matthew Gardiner
mg11 at csr.com
Mon Jul 21 22:01:20 PDT 2014
Todd Fiala wrote:
>
>
> 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.
>
>
> Okay, I tried a configure/make on top of tree on Ubuntu 14.04 x86_64.
> I did not get the lib64 dir, so this seems to be a diff in the flow
> between the Ubuntu and FC build.
Ok, thanks for confirming the difference between your ubuntu and my FC
experience.
By the way I've just opened llvm/tools/lldb/CMakeLists.txt
if ( CMAKE_SYSTEM_NAME MATCHES "Windows" )
set(LLDB_DEFAULT_DISABLE_PYTHON 1)
set(LLDB_DEFAULT_DISABLE_CURSES 1)
if (LLDB_DISABLE_PYTHON)
set(LLDB_DEFAULT_ENABLE_PYTHON_SCRIPTS_SWIG_API_GENERATION 0)
else()
set(LLDB_DEFAULT_ENABLE_PYTHON_SCRIPTS_SWIG_API_GENERATION 1)
endif()
else()
set(LLDB_DEFAULT_DISABLE_PYTHON 0)
set(LLDB_DEFAULT_DISABLE_CURSES 0)
set(LLDB_DEFAULT_ENABLE_PYTHON_SCRIPTS_SWIG_API_GENERATION 0)
endif()
I'm guessing
set(LLDB_DEFAULT_ENABLE_PYTHON_SCRIPTS_SWIG_API_GENERATION 0) means:
"In non-windows we use shell scripts not python to run swig".
Anyway, I guess this is the CMake variable Zachary meant.
>
> Incidentally, I am having trouble running tests with configure/make.
> Might just be my setup or configure invocation, but I'll get around
> to tracking that down here at some point. For now, I'd definitely
> recommend going the cmake/ninja route for testing.
Yeah, agreed, at least till we get this figured out.
> Thanks for identifying that!
>
> -Todd
>
>
>
> On Mon, Jul 21, 2014 at 6:51 AM, Matthew Gardiner <mg11 at csr.com
> <mailto:mg11 at csr.com>> 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 at 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 at 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 at tfiala2:/mnt/ssd/work/macosx.sync/mbp-svn/build-debug/lib$site-packages
>
> |
>
> The left side shows the short name that the .so is
> referencing. The right side shows what the loader
> actually mapped it to with the current environment. If
> there is a problem loading liblldb.so, this will show
> as (I think) question marks on the right side
> indicating that the shared library linkage was not
> found. Let me know if you see something like that.
>
> If you get past this part and you don’t see any
> issues, the next thing to try is:
> PYTHONPATH=/path/to/your/lldb/lib/python2.7/site-packages
> python
> Then do an ‘import lldb’, then a ‘dir (lldb)’, like so:
>
> |tfiala at tfiala2:/mnt/ssd/work/macosx.sync/mbp-svn/build-debug/lib$
> 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
> <mg11 at csr.com <mailto:mg11 at csr.com>
> <mailto:mg11 at csr.com <mailto:mg11 at csr.com>>> 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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> --
> Todd Fiala | Software Engineer |
> tfiala at google.com <mailto:tfiala at google.com>
> <mailto:tfiala at google.com <mailto:tfiala at google.com>>
> | 650-943-3180 <tel:650-943-3180>
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