Initial Android support by o01eg · Pull Request #262 · python-cmake-buildsystem/python-cmake-buildsystem

o01eg · 2020-01-19T07:45:42Z

Fixes #253 and fixes #158

jcfr · 2020-01-22T02:29:51Z

Thanks for the contribution 🙏

still not configurable due heavily usage of TRY_RUN

You may want to try using a recent version of CMake and specify the variable https://cmake.org/cmake/help/latest/variable/CMAKE_CROSSCOMPILING_EMULATOR.html

Here are examples illustrating how the variable is used: https://github.com/dockcross/dockcross/blob/1c10fb2ce795a85707f063eb33e42b0f67d2acec/linux-armv7/Toolchain.cmake#L19

o01eg · 2020-01-22T06:58:00Z

I've tried qemu-arm emulator for armeabi-v7a and I suppose it doesn't work correctly because each check returns /system/bin/linker: No such file or directory.

o01eg · 2020-01-22T07:11:20Z

I've found emulator/qemu/linux-x86_64/qemu-system-armel-headless in android folder, but it doesn't work either:

-- Checking SOABI - cpython-36m-invalid command-line parameter: /tmp/scratch/python-build/CMakeFiles/CMakeTmp/cmTC_6c348.
Hint: use '@foo' to launch a virtual device named 'foo'.
please use -help for more information

o01eg · 2020-01-24T19:16:27Z

@jcfr It looks like there nothing could be used for CMAKE_CROSSCOMPILING_EMULATOR. Qemu for Android cannot execute binary files. Looks like other libraries also excludes TRY_RUN for android cross-compilation:
curl/curl#3292

I suppose it should be maintained manually like cmake/config-mingw/pyconfig.h

o01eg · 2020-01-24T20:56:12Z

No, I found a way:

#!/bin/sh
adb push "$1" /data/local/tmp/ 1>/dev/null 2>/dev/null
adb shell /data/local/tmp/$(basename $1)

It requires to start up emulator with correct ABI, but latest Google emulator for ARM CPUs are 7.1.1 Android.

Now it configures but fails on compilation:

[  1%] Building C object CMakeBuild/extensions/extension_array/CMakeFiles/extension_array.dir/tmp/scratch/Python-3.6.7/Modules/arraymodule.c.o
cd /tmp/scratch/python-build/CMakeBuild/extensions/extension_array && /mnt/new/o01eg/android/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang --target=armv7-none-linux-androideabi16 --gcc-toolchain=/mnt/new/o01eg/android/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64 --sysroot=/mnt/new/o01eg/android/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/sysroot -Dextension_array_EXPORTS -I/tmp/scratch/Python-3.6.7/Include -I/tmp/scratch/python-build/bin -I/tmp/scratch/Python-3.6.7/Python  -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -march=armv7-a -mthumb -Wformat -Werror=format-security  -Wall -Oz -DNDEBUG  -fPIC   -o CMakeFiles/extension_array.dir/tmp/scratch/Python-3.6.7/Modules/arraymodule.c.o   -c /tmp/scratch/Python-3.6.7/Modules/arraymodule.c
[  1%] Linking C shared library ../../../lib/python3.6/lib-dynload/array.so
cd /tmp/scratch/python-build/CMakeBuild/extensions/extension_array && /mnt/new/o01eg/android/cmake/3.10.2.4988404/bin/cmake -E cmake_link_script CMakeFiles/extension_array.dir/link.txt --verbose=1
/mnt/new/o01eg/android/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang --target=armv7-none-linux-androideabi16 --gcc-toolchain=/mnt/new/o01eg/android/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64 --sysroot=/mnt/new/o01eg/android/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/sysroot -fPIC -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -march=armv7-a -mthumb -Wformat -Werror=format-security  -Wall -Oz -DNDEBUG  -Wl,--exclude-libs,libgcc_real.a -Wl,--exclude-libs,libatomic.a -static-libstdc++ -Wl,--build-id -Wl,--fatal-warnings -Wl,--exclude-libs,libunwind.a -Wl,--no-undefined -Qunused-arguments  -shared -Wl,-soname,array.so -o ../../../lib/python3.6/lib-dynload/array.so CMakeFiles/extension_array.dir/tmp/scratch/Python-3.6.7/Modules/arraymodule.c.o -latomic -lm 
/tmp/scratch/Python-3.6.7/Modules/arraymodule.c:3033: error: undefined reference to 'PyModuleDef_Init'
/tmp/scratch/Python-3.6.7/Modules/clinic/arraymodule.c.h:463: error: undefined reference to '_PyArg_ParseTuple_SizeT'
/tmp/scratch/Python-3.6.7/Modules/arraymodule.c:0: error: undefined reference to 'PyErr_Format'
/tmp/scratch/Python-3.6.7/Modules/arraymodule.c:1937: error: undefined reference to 'PyType_IsSubtype'
/tmp/scratch/Python-3.6.7/Modules/arraymodule.c:1938: error: undefined reference to 'PyErr_Format'
/tmp/scratch/Python-3.6.7/Modules/arraymodule.c:0: error: undefined reference to 'PyErr_SetString'
/tmp/scratch/Python-3.6.7/Modules/arraymodule.c:2086: error: undefined reference to 'PyList_New'

o01eg · 2020-01-24T21:38:23Z

Linker failure can be solved with checks for Clang compiler and option -DANDROID_ALLOW_UNDEFINED_SYMBOLS=On.

Now it fails on assembler

[ 19%] Building ASM object CMakeBuild/extensions/extension_ctypes/CMakeFiles/extension_ctypes.dir/tmp/scratch/Python-3.6.7/Modules/_ctypes/libffi/src/arm/sysv.S.o
cd /tmp/scratch/python-build/CMakeBuild/extensions/extension_ctypes && /mnt/new/o01eg/android/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang -target armv7-none-linux-androideabi16 -gcc-toolchain /mnt/new/o01eg/android/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64 --sysroot=/mnt/new/o01eg/android/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/sysroot -Dextension_ctypes_EXPORTS -I/tmp/scratch/Python-3.6.7/Include -I/tmp/scratch/python-build/bin -I/tmp/scratch/Python-3.6.7/Python -I/tmp/scratch/Python-3.6.7/Modules/_ctypes/libffi/src/arm -I/tmp/scratch/Python-3.6.7/Modules/_ctypes/libffi/include -I/tmp/scratch/python-cmake-buildsystem/cmake  -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -march=armv7-a -mthumb -Wformat -Werror=format-security  -Oz -DNDEBUG  -fPIC   -o CMakeFiles/extension_ctypes.dir/tmp/scratch/Python-3.6.7/Modules/_ctypes/libffi/src/arm/sysv.S.o -c /tmp/scratch/Python-3.6.7/Modules/_ctypes/libffi/src/arm/sysv.S
/tmp/scratch/Python-3.6.7/Modules/_ctypes/libffi/src/arm/sysv.S:363:2: error: invalid instruction, did you mean: fldmiax?
 fldmiadgt ip, {d0-d7}
 ^
/tmp/scratch/Python-3.6.7/Modules/_ctypes/libffi/src/arm/sysv.S:399:2: error: invalid instruction
 stmeqia r2, {r0, r1}
 ^
/tmp/scratch/Python-3.6.7/Modules/_ctypes/libffi/src/arm/sysv.S:412:2: error: invalid instruction, did you mean: fstmiax?
 fstmiadeq r2, {d0-d3}
 ^
/tmp/sysv-89fdb2.s:263:2: error: invalid instruction
 fstmfdd sp!, {d0-d7}
 ^
/tmp/sysv-89fdb2.s:313:2: error: invalid instruction, did you mean: fldmiax?
 fldmiad sp, {d0-d1}
 ^
/tmp/sysv-89fdb2.s:316:2: error: invalid instruction, did you mean: fldmiax?
 fldmiad sp, {d0-d3}

o01eg · 2020-01-24T22:05:45Z

I have to disable extension -DENABLE_DECIMAL=Off -DENABLE_CTYPES=Off . Now I get error:

[ 57%] Linking C executable _freeze_importlib
cd /tmp/scratch/python-build/CMakeBuild/libpython && /mnt/new/o01eg/android/cmake/3.10.2.4988404/bin/cmake -E cmake_link_script CMakeFiles/_freeze_importlib.dir/link.txt --verbose=1
/mnt/new/o01eg/android/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/bin/clang --target=armv7-none-linux-androideabi16 --gcc-toolchain=/mnt/new/o01eg/android/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64 --sysroot=/mnt/new/o01eg/android/ndk-bundle/toolchains/llvm/prebuilt/linux-x86_64/sysroot -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -march=armv7-a -mthumb -Wformat -Werror=format-security  -Wall -Oz -DNDEBUG   -Wl,--exclude-libs,libgcc_real.a -Wl,--exclude-libs,libatomic.a -static-libstdc++ -Wl,--build-id -Wl,--fatal-warnings -Wl,--exclude-libs,libunwind.a -Qunused-arguments -Wl,--gc-sections  CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Programs/_freeze_importlib.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/getbuildinfo.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Parser/myreadline.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Parser/parsetok.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Parser/tokenizer.c.o CMakeFiles/_freeze_importlib.dir/__/__/CMakeFiles/config.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/gcmodule.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/main.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/getpath.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_codecsmodule.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/errnomodule.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/signalmodule.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_sre.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/symtablemodule.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_weakref.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/xxsubtype.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/zipimport.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Objects/accu.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Objects/bytesobject.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Objects/namespaceobject.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Objects/odictobject.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Objects/abstract.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Objects/boolobject.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Objects/bytearrayobject.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Objects/bytes_methods.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Objects/capsule.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Objects/cellobject.c.o 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CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Python/pyarena.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Python/pyctype.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Python/pyfpe.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Python/pymath.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Python/pystate.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Python/pystrcmp.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Python/Python-ast.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Python/pythonrun.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Python/random.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Python/structmember.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Python/symtable.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Python/sysmodule.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Python/traceback.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Python/_warnings.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Python/frozenmain.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_collectionsmodule.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_datetimemodule.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/timemodule.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_io/_iomodule.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_io/bufferedio.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_io/bytesio.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_io/fileio.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_io/iobase.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_io/stringio.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_io/textio.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_threadmodule.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/atexitmodule.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/faulthandler.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_opcode.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_pickle.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_stat.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/hashtable.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_tracemalloc.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/posixmodule.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/pwdmodule.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/_posixsubprocess.c.o CMakeFiles/_freeze_importlib.dir/tmp/scratch/Python-3.6.7/Modules/socketmodule.c.o  -o _freeze_importlib -ldl -latomic -lm 
/tmp/scratch/Python-3.6.7/Python/fileutils.c:65: error: undefined reference to 'nl_langinfo'
/tmp/scratch/Python-3.6.7/Python/fileutils.c:1685: error: undefined reference to 'localeconv'
/tmp/scratch/Python-3.6.7/Python/pylifecycle.c:233: error: undefined reference to 'nl_langinfo'
clang: error: linker command failed with exit code 1 (use -v to see invocation)

o01eg · 2020-01-24T22:25:16Z

To fix localeconv error I have to set -DANDROID_PLATFORM=21 and disable HAVE_LANGINFO_H for android.

Now I stopped on error:

[ 62%] Generating /tmp/scratch/Python-3.6.7/Python/importlib_external.h, /tmp/scratch/Python-3.6.7/Python/importlib.h
cd /tmp/scratch/python-build/CMakeBuild/libpython && /tmp/adb-emu.sh /tmp/scratch/python-build/CMakeBuild/libpython/_freeze_importlib /tmp/scratch/Python-3.6.7/Lib/importlib/_bootstrap_external.py /tmp/scratch/Python-3.6.7/Python/importlib_external.h

I suppose it shouldn't be called from emulation.

o01eg · 2020-01-24T22:55:20Z

I've managed to solve it by fix adb-emu.sh.

It is left last step:

[100%] Relocate _sysconfigdata_m_generic_.py and update pybuilddir.txt
cd /tmp/scratch/python-build/bin && /tmp/adb-emu.sh /tmp/scratch/python-build/bin/python -E -S -m sysconfig --generate-posix-vars

But at least I already get ./lib/libpython3.6m.a

o01eg · 2020-01-24T23:12:36Z

I've disabled "Relocate sysconfigdata_m_generic_.py and update pybuilddir.txt" step and python successfully built.

Now it fails on install target:

-- Up-to-date: /tmp/scratch/python_install/lib/python3.6/xml/etree/cElementTree.py
-- Up-to-date: /tmp/scratch/python_install/lib/python3.6/xml/parsers/__init__.py
-- Up-to-date: /tmp/scratch/python_install/lib/python3.6/xml/parsers/expat.py
-- Up-to-date: /tmp/scratch/python_install/lib/python3.6/xml/sax/__init__.py
-- Up-to-date: /tmp/scratch/python_install/lib/python3.6/xml/sax/_exceptions.py
-- Up-to-date: /tmp/scratch/python_install/lib/python3.6/xml/sax/expatreader.py
-- Up-to-date: /tmp/scratch/python_install/lib/python3.6/xml/sax/handler.py
-- Up-to-date: /tmp/scratch/python_install/lib/python3.6/xml/sax/saxutils.py
-- Up-to-date: /tmp/scratch/python_install/lib/python3.6/xml/sax/xmlreader.py
-- Up-to-date: /tmp/scratch/python_install/lib/python3.6/xmlrpc/__init__.py
-- Up-to-date: /tmp/scratch/python_install/lib/python3.6/xmlrpc/client.py
-- Up-to-date: /tmp/scratch/python_install/lib/python3.6/xmlrpc/server.py
-- Up-to-date: /tmp/scratch/python_install/lib/python3.6/zipapp.py
-- Up-to-date: /tmp/scratch/python_install/lib/python3.6/zipfile.py
/tmp/scratch/python_install/bin/python: /tmp/scratch/python_install/bin/python: cannot execute binary file
/tmp/scratch/python_install/bin/python: /tmp/scratch/python_install/bin/python: cannot execute binary file

jcfr · 2020-01-24T23:20:20Z

Thanks @o01eg for working on this and sharing your progress 🙏

Just done with a week long hackathon, I will be traveling for few days and then will head to an other week long hackathon ... this means that I may not have a lot of time to review your awesome work right away.

o01eg · 2020-01-24T23:30:22Z

I've removed last python call in installation and now I get install target to work.

o01eg · 2020-10-26T12:23:08Z

I've rebased it. Does something need to be done to be accepted?

o01eg · 2020-11-21T07:51:38Z

Fixed configuration for Android-x86

o01eg · 2021-03-31T07:05:44Z

Example of working application https://github.com/o01eg/freeorion/tree/python-parser-exec-techs_android

o01eg · 2021-10-13T19:20:23Z

Add Github Actions CI to build it

Translated to CMake from a patch on the Yocto project: http://cgit.openembedded.org/openembedded-core/tree/meta/recipes-devtools/python/python3/0002-Don-t-do-runtime-test-to-get-float-byte-order.patch?h=zeus It avoids the execution of a program on the target device, and produces a clearer endianness result.

o01eg · 2022-03-31T19:49:09Z

Rebased, fixed conflicts. Builds on CI https://github.com/o01eg/python-cmake-buildsystem/actions/runs/2073151534

Also builds with boost https://github.com/o01eg/freeorion-sdk/actions/runs/2073529344

o01eg · 2022-05-08T13:00:27Z

Can I do something else for this PR to be accepted?

o01eg force-pushed the android-initial-support branch 2 times, most recently from abd7390 to cfffedc Compare January 24, 2020 21:37

o01eg force-pushed the android-initial-support branch from cfffedc to c841b09 Compare January 24, 2020 23:10

jcfr added Project: crosscompilation crosscompilation specific Type: Enhancement Improvement to functionality labels Jan 24, 2020

o01eg mentioned this pull request Jan 25, 2020

Boost-python support moritz-wundke/Boost-for-Android#188

Closed

o01eg force-pushed the android-initial-support branch from 3684b99 to 347426a Compare October 26, 2020 12:21

victorpaleologue mentioned this pull request May 26, 2021

Initial Android Support: alternate #280

Open

o01eg force-pushed the android-initial-support branch 7 times, most recently from 322127e to 555170d Compare October 13, 2021 11:55

o01eg force-pushed the android-initial-support branch 16 times, most recently from 189c857 to 4d02b74 Compare October 13, 2021 19:08

o01eg and others added 8 commits March 31, 2022 22:06

Start initial Android support

ea42f7f

Don't try to call python in Adroid cross-compilation

f8dd9ab

Fx for Android-x86

7cabaf5

Enable extensions as built-in

c1e4745

Add Github Actions for Android

d3a525a

Try to enable armeabi-v7a

4356b24

Add non-native support for arm64-v8a

d47d7ce

o01eg force-pushed the android-initial-support branch from 4d02b74 to d47d7ce Compare March 31, 2022 19:09

Use system-wide cmake

d20898a

jcfr mentioned this pull request Jan 26, 2023

Add android cross compiling support #321

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