[Scons-users] TryRun() problem with python3 scons-3.0.1
Andrew C. Morrow
andrew.c.morrow at gmail.com
Sun Mar 11 20:33:34 EDT 2018
Hi Bill -
Unfortunately, not yet.
I just ran into this on Tuesday, spent a little time trying to debug it and
failing, and then I wasn't working on it for a few days. When I saw the
post here with the same error I chimed in since perhaps it is a related
issue.
While I could try to work on a smaller repro, I wonder if a better approach
would be to monkey with the exception throwing mechanism or base exception
type so we can log a stacktrace or do something else when the error occurs?
Otherwise, since we don't get a backtrace and --debug=stacktrace does
nothing, it is quite hard to see a way to debug it. I'm not the best at py
debugging, so I'm happy to try out any suggestions you might have for how
to hook into the error when it happens.
Thanks,
Andrew
On Sun, Mar 11, 2018 at 7:33 PM, Bill Deegan <bill at baddogconsulting.com>
wrote:
> Nothing smaller than the whole mongodb build tree?..
>
> On Sun, Mar 11, 2018 at 4:26 PM, Andrew C. Morrow <
> andrew.c.morrow at gmail.com> wrote:
>
>>
>> Hi Bill -
>>
>> Here is a repro for me.
>>
>> You will need to clone https://github.com/acmorrow/mo
>> ngo/tree/SERVER-32295. This is a work-in-progress branch for adding py3
>> support to the mongodb build system. I'm using SCons from git, currently
>> checked out to 867f762f6c1e23524cd1b0262b8e93e822b23d0c. I'm using
>> python 3.6.4 from homebrew on OS X 10.13.
>>
>> The following command fails:
>>
>> $ SCONS_LIB_DIR=$(pwd)/../../oss/scons/src/engine /usr/local/bin/python3
>> ../../oss/scons/src/script/scons.py -j8 --dbg=on --opt=off --ssl
>> --link-model=dynamic CPPPATH="/usr/local/include
>> /usr/local/include/libbson-1.0 /usr/local/include/libmongoc-1.0
>> /usr/local/opt/openssl/include" LIBPATH="/usr/local/lib
>> /usr/local/opt/openssl/lib" --implicit-cache MONGO_VERSION=3.7.1-pre
>> --variables-files= --cache
>> scons: Reading SConscript files ...
>> Mkdir("build/scons")
>> scons version: __VERSION__
>> python version: 3 6 4 final 0
>> Checking whether the C compiler works... yes
>> Checking whether the C++ compiler works... yes
>> Checking that the C++ compiler can link a C++ program... yes
>> Checking if C++ compiler "g++" is GCC... no
>> Checking if C++ compiler "g++" is clang... yes
>> Checking if C compiler "gcc" is clang... yes
>> Detected a x86_64 processor
>> Checking if target OS macOS is supported by the toolchain... yes
>> Checking if C compiler is clang 3.8 (or Apple XCode 8.3.2) or newer...*TypeError
>> : sequence item 0: expected str instance, bytes found*
>>
>> If I remove the --cache argument, the build runs (at least, it gets a
>> lot further along, making it all the way through configure and starting to
>> build targets, before failing for other reasons):
>>
>> SCONS_LIB_DIR=$(pwd)/../../oss/scons/src/engine /usr/local/bin/python3
>> ../../oss/scons/src/script/scons.py -j8 --dbg=on --opt=off --ssl
>> --link-model=dynamic CPPPATH="/usr/local/include
>> /usr/local/include/libbson-1.0 /usr/local/include/libmongoc-1.0
>> /usr/local/opt/openssl/include" LIBPATH="/usr/local/lib
>> /usr/local/opt/openssl/lib" --implicit-cache MONGO_VERSION=3.7.1-pre
>> --variables-files=
>> scons: Reading SConscript files ...
>> Mkdir("build/scons")
>> scons version: __VERSION__
>> python version: 3 6 4 final 0
>> Checking whether the C compiler works... yes
>> Checking whether the C++ compiler works... yes
>> Checking that the C++ compiler can link a C++ program... yes
>> Checking if C++ compiler "g++" is GCC... no
>> Checking if C++ compiler "g++" is clang... yes
>> Checking if C compiler "gcc" is clang... yes
>> Detected a x86_64 processor
>> Checking if target OS macOS is supported by the toolchain... yes
>> Checking if C compiler is clang 3.8 (or Apple XCode 8.3.2) or newer...yes
>> Checking if C++ compiler is clang 3.8 (or Apple XCode 8.3.2) or
>> newer...yes
>> Checking for sufficient macOS target version minimum... yes
>> Checking if C compiler supports -Wno-unused-local-typedefs... yes
>> Checking if C compiler supports -Wno-unused-function... yes
>> Checking if C compiler supports -Wno-unused-private-field... yes
>> Checking if C compiler supports -Wno-deprecated-declarations... yes
>> Checking if C compiler supports -Wno-tautological-constant-out-of-range-compare...
>> yes
>> Checking if C compiler supports -Wno-unused-const-variable... yes
>> Checking if C compiler supports -Wno-unused-but-set-variable... no
>> ...
>>
>> Can you give that a try and see it you can repro? I'll bet it probably is
>> something incomplete in the py3 port on the mongodb side, rather than the
>> SCons side, but without a stacktrace it is proving hard to find.
>>
>> Thanks,
>> Andrew
>>
>>
>>
>> On Sun, Mar 11, 2018 at 11:59 AM, Bill Deegan <bill at baddogconsulting.com>
>> wrote:
>>
>>> Can someone provide a small reproducer?
>>>
>>> -Bill
>>>
>>> On Sun, Mar 11, 2018 at 3:42 AM, Dave Plater <dplater.list at gmail.com>
>>> wrote:
>>>
>>>>
>>>>
>>>> On 10/03/18 22:26, Bill Deegan wrote:
>>>>
>>>>> Can you try changing:
>>>>>
>>>>> outputStr =SCons.Util.to_str(output.get_contents())
>>>>>
>>>>> to
>>>>>
>>>>> outputStr =SCons.Util.to_str(output.get_text_contents())
>>>>>
>>>>> in SCons/SConf.py around line 646 in TryRun()?
>>>>> And see if that resolves the issue..
>>>>>
>>>>> -Bill
>>>>>
>>>>>
>>>> Hi Bill, it doesn't resolve the issue but I did go further and inserted
>>>> a couple of print statements into TryBuild where it goes wrong.
>>>> The result of (the first line is about line 584 in SConf.py):
>>>> nodes = builder(target = target, source = source)
>>>> print("\nnodes = ",nodes)
>>>> if not SCons.Util.is_List(nodes):
>>>> nodes = [nodes]
>>>> print("\n[nodes] = ",nodes)
>>>> nodesToBeBuilt.extend(nodes)
>>>> result = self.BuildNodes(nodesToBeBuilt)
>>>> print("\nresult = ",result)
>>>>
>>>> This results in :
>>>> Checking for a working C-compiler TryLink
>>>>
>>>> nodes = ['cache/conftest_0']
>>>>
>>>> TypeError : sequence item 0: expected str instance, bytes found
>>>>
>>>> Thanks
>>>> Dave
>>>>
>>>
>>>
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>>>
>>
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