I don't think cross-compiling python for ARM is the right way. You will not be able to run the result anywhere. --Pekka On 2014–10–14, at 20:27 , Asif Sardar <engr.asif.sardar@xxxxxxxxxxxxxx> wrote: > 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 > > > > -- > With Best Regards, > Asif Sardar. > +358 43 8265795 > > > > -- > With Best Regards, > Asif Sardar. > +358 43 8265795 > > > > -- > With Best Regards, > Asif Sardar. > +358 43 8265795
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