[ell-i-developers] Re: Embedding python in emulator
- From: Asif Sardar <engr.asif.sardar@xxxxxxxxxxxxxx>
- To: Jose Granados Vergara <jose.granados@xxxxxx>
- Date: Tue, 14 Oct 2014 20:27:52 +0300
By native I meant my own laptop e.g. using gcc-linux to compile python. I
want to use python interpretor to be called from emulator code to call some
python functions (This will help later on for multi-purposes e.g. we can
call python from C/C++ independently). Currently, the callbacks I have
implemented have to pass-on information to python by actually calling the
emulator from python itself (2-way calling). If I am able to embed python
in emulator, it will asynchronously or independently call python whenever
needed from C/C++ code. Actually, the test libraries are written in python
language in Robot Framework that is why I am interested to do these kind of
functionality to both C/C++ and python.
I will try the steps in
https://www.ailis.de/~k/archives/19-ARM-cross-compiling-howto.html#python
to cross-compile the python for ARM itself. I will share the findings here!
On Tue, Oct 14, 2014 at 8:12 PM, Jose Granados Vergara <jose.granados@xxxxxx
> wrote:
> Isn't the emulator native? why do you need to bind Python to the ARM
> binaries?
>
> -Jose
> ------------------------------
> *De:* Asif Sardar [engr.asif.sardar@xxxxxxxxxxxxxx]
> *Enviado:* martes, 14 de octubre de 2014 08:04 p.m.
> *Para:* Jose Granados Vergara
> *CC:* ell-i-developers@xxxxxxxxxxxxx; Lari Lehtomäki
> *Asunto:* Re: Embedding python in emulator
>
> Thanks Jose,
>
> On native platform, its working for me as well. I think I have to
> re-compile or cross-compile 32-bit python using ARM tools e.g. using
> something like CXX=arm-none-linux-gnueabi-g++ and then rebuild robot
> framework.
>
> I have to compile the emulator files using arm-tool chain and I am
> including the 32-bit python in it built with native gcc toolchain.
>
> If anyone else has some suggestions that I will really appreciate!
>
> On Tue, Oct 14, 2014 at 7:58 PM, Jose Granados Vergara <
> jose.granados@xxxxxx> wrote:
>
>> This worked for me:
>>
>> something.c:
>>
>> #include "Python.h"
>>
>> int main()
>> {
>> Py_Initialize();
>> return 0;
>> }
>>
>> ~$ g++ -I/usr/include/python2.7 something.c -o something -lpython2.7
>>
>>
>> -Jose
>> ------------------------------
>> *De:* Asif Sardar [engr.asif.sardar@xxxxxxxxxxxxxx]
>> *Enviado:* martes, 14 de octubre de 2014 07:40 p.m.
>> *Para:* ell-i-developers@xxxxxxxxxxxxx
>> *CC:* Lari Lehtomäki; Jose Granados Vergara
>> *Asunto:* Fwd: Embedding python in emulator
>>
>> Hi,
>>
>> Has anybody embedded python in C/C++ application. My platform is 64-bit
>> and python binaries I am using for Runtime/emulator is 32-bit. I have added
>> following flags in CFLAGS and LDFLAGS to compile and link the c/c++ files
>> in emulator with (#include </path/32-bit-python/include/python.h>)
>>
>> CFLAGS += -I/opt/pym32/bin/include/python2.7 -fno-strict-aliasing -DNDEBUG
>> -g -fwrapv -O3 -Wall -Wstrict-prototypes
>>
>> LDFLAGS += -L/opt/pym32/lib/python2.7/config -lpthread -ldl -lutil -lm
>> -lpython2.7 -Xlinker -export-dynamic
>>
>> The files compiles but breaks when linking. Can anybody help with
>> following errors:
>>
>> -----------------------
>> ./libsystem_stm32f4discovery.a(Register.o): In function
>> `Register::GPIO_Callback_Python(std::string, std::string, unsigned int,
>> std::string)':
>> /home/asif/Ell-i-Working-Directory/Ell-i-Software-Development/Runtime/stm32/tests/robot_library/../../emulator/src/Register.cpp:41:
>> undefined reference to `Py_Initialize'
>> /home/asif/Ell-i-Working-Directory/Ell-i-Software-Development/Runtime/stm32/tests/robot_library/../../emulator/src/Register.cpp:43:
>> undefined reference to `PyRun_SimpleStringFlags'
>> /home/asif/Ell-i-Working-Directory/Ell-i-Software-Development/Runtime/stm32/tests/robot_library/../../emulator/src/Register.cpp:44:
>> undefined reference to `Py_Finalize'
>> /home/asif/Ell-i-Working-Directory/Ell-i-Software-Development/Runtime/stm32/tests/robot_library/../../emulator/src/Register.cpp:41:
>> undefined reference to `Py_Initialize'
>> /home/asif/Ell-i-Working-Directory/Ell-i-Software-Development/Runtime/stm32/tests/robot_library/../../emulator/src/Register.cpp:43:
>> undefined reference to `PyRun_SimpleStringFlags'
>> /home/asif/Ell-i-Working-Directory/Ell-i-Software-Development/Runtime/stm32/tests/robot_library/../../emulator/src/Register.cpp:44:
>> undefined reference to `Py_Finalize'
>> ./libsystem_stm32f4discovery.a(system_stm32f4xx.o): In function
>> `__exchange_and_add':
>> /usr/include/c++/4.8/ext/atomicity.h:49: undefined reference to
>> `__atomic_fetch_add_4'
>> /usr/include/c++/4.8/ext/atomicity.h:49: undefined reference to
>> `__atomic_fetch_add_4'
>> /usr/include/c++/4.8/ext/atomicity.h:49: undefined reference to
>> `__atomic_fetch_add_4'
>> /usr/include/c++/4.8/ext/atomicity.h:49: undefined reference to
>> `__atomic_fetch_add_4'
>> -----------------------
>>
>>
>> ---------- Forwarded message ----------
>> From: Asif Sardar <engr.asif.sardar@xxxxxxxxxxxxxx>
>> Date: Mon, Oct 13, 2014 at 6:17 PM
>> Subject: Embedding python in emulator
>> To: Pekka Nikander <pekka.nikander@xxxxxx>
>>
>>
>> Hi Pekka,
>>
>> I am trying to include python.h in emulator/inc/register.h
>>
>> I have to include cflags and ldflags in Makefile system of emulator e.g.
>>
>> -I/opt/include/python2.7 -fno-strict-aliasing -DNDEBUG -g -fwrapv -O3 -Wall
>> -Wstrict-prototypes
>>
>> -L/opt/lib/python2.7/config -lpthread -ldl -lutil -lm -lpython2.7 -Xlinker
>> -export-dynamic
>>
>> However, I am getting:
>> ----------------------------------------------------
>> g++ -m32 -march=i386 -m32 -march=i386 -Xlinker -export-dynamic -o
>> robot_library robot_library.o stm32f4discovery.o libSPI.a "-L."
>> "-L/home/asif/Ell-i-Working-Directory/Ell-i-Software-Development/Runtime/stm32/tests/robot_library/../../variants/stm32f4discovery"
>> "-lsystem_stm32f4discovery" -lstdc++
>> ./libsystem_stm32f4discovery.a(Register.o): In function
>> `Register::GPIO_Callback_Python(std::string, std::string, unsigned int,
>> std::string)':
>> /home/asif/Ell-i-Working-Directory/Ell-i-Software-Development/Runtime/stm32/tests/robot_library/../../emulator/src/Register.cpp:41:
>> undefined reference to `Py_Initialize'
>> /home/asif/Ell-i-Working-Directory/Ell-i-Software-Development/Runtime/stm32/tests/robot_library/../../emulator/src/Register.cpp:43:
>> undefined reference to `PyRun_SimpleStringFlags'
>> /home/asif/Ell-i-Working-Directory/Ell-i-Software-Development/Runtime/stm32/tests/robot_library/../../emulator/src/Register.cpp:44:
>> undefined reference to `Py_Finalize'
>> /home/asif/Ell-i-Working-Directory/Ell-i-Software-Development/Runtime/stm32/tests/robot_library/../../emulator/src/Register.cpp:41:
>> undefined reference to `Py_Initialize'
>> /home/asif/Ell-i-Working-Directory/Ell-i-Software-Development/Runtime/stm32/tests/robot_library/../../emulator/src/Register.cpp:43:
>> undefined reference to `PyRun_SimpleStringFlags'
>> /home/asif/Ell-i-Working-Directory/Ell-i-Software-Development/Runtime/stm32/tests/robot_library/../../emulator/src/Register.cpp:44:
>> undefined reference to `Py_Finalize'
>> ./libsystem_stm32f4discovery.a(system_stm32f4xx.o): In function
>> `__exchange_and_add':
>> /usr/include/c++/4.8/ext/atomicity.h:49: undefined reference to
>> `__atomic_fetch_add_4'
>> /usr/include/c++/4.8/ext/atomicity.h:49: undefined reference to
>> `__atomic_fetch_add_4'
>> /usr/include/c++/4.8/ext/atomicity.h:49: undefined reference to
>> `__atomic_fetch_add_4'
>> /usr/include/c++/4.8/ext/atomicity.h:49: undefined reference to
>> `__atomic_fetch_add_4'
>> collect2: error: ld returned 1 exit status
>> make[1]: *** [robot_library] Error 1
>> -----------------------------------
>>
>> Can you help me in including these flags in the Makefile system and
>> link the python with it? It will help a lot, to call from c to python
>> independently.
>>
>>
>>
>> --
>>
>>
>>
>> *With Best Regards, Asif Sardar. +358 43 8265795 <%2B358%2043%208265795> *
>>
>>
>>
>> --
>>
>>
>>
>> *With Best Regards, Asif Sardar. +358 43 8265795 <%2B358%2043%208265795> *
>>
>
>
>
> --
>
>
>
> *With Best Regards, Asif Sardar. +358 43 8265795 <%2B358%2043%208265795> *
>
--
*With Best Regards,Asif Sardar.+358 43 8265795*
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