python3.10rc2 compilation on android/termux/clang12.0.1 fails
I am trying to compile Python3.10rc2 on rather unusual platform (termux on android). The gcc version is listed below: ~ $ g++ -v clang version 12.0.1 Target: aarch64-unknown-linux-android24 Thread model: posix InstalledDir: /data/data/com.termux/files/usr/bin I get following warnings and errors: Python/pytime.c:398:10: warning: implicit conversion from 'long' to 'double' changes value from 9223372036854775807 to 9223372036854775808 [-Wimplicit-const-int-float-conver sion] if (!_Py_InIntegralTypeRange(_PyTime_t, d)) { Python/bootstrap_hash.c:141:17: error: implicit declaration of function 'getrandom' is invalid in C99 [-Werror,-Wimplicit-function-declaration] n = getrandom(dest, n, flags); ^ Python/bootstrap_hash.c:145:17: error: implicit declaration of function 'getrandom' is invalid in C99 [-Werror,-Wimplicit-function-declaration] n = getrandom(dest, n, flags); Not sure if this is limitation of the platform or Python codebase needs fixes. Thanks -S
Did previous versions of Python compile successfully? The RC phase wouldn't be the right time to add support for a new platform. El mié, 15 sept 2021 a las 10:15, Sandeep Gupta (<gupta.sandeep@gmail.com>) escribió:
I am trying to compile Python3.10rc2 on rather unusual platform (termux on android). The gcc version is listed below: ~ $ g++ -v clang version 12.0.1 Target: aarch64-unknown-linux-android24 Thread model: posix InstalledDir: /data/data/com.termux/files/usr/bin
I get following warnings and errors: Python/pytime.c:398:10: warning: implicit conversion from 'long' to 'double' changes value from 9223372036854775807 to 9223372036854775808 [-Wimplicit-const-int-float-conver sion] if (!_Py_InIntegralTypeRange(_PyTime_t, d)) {
Python/bootstrap_hash.c:141:17: error: implicit declaration of function 'getrandom' is invalid in C99 [-Werror,-Wimplicit-function-declaration] n = getrandom(dest, n, flags); ^ Python/bootstrap_hash.c:145:17: error: implicit declaration of function 'getrandom' is invalid in C99 [-Werror,-Wimplicit-function-declaration] n = getrandom(dest, n, flags);
Not sure if this is limitation of the platform or Python codebase needs fixes.
Thanks -S _______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-leave@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/KEURSMCL... Code of Conduct: http://python.org/psf/codeofconduct/
Sounds to me as if the first warning is somewhat legit (you can probably ignore it). The second seems to be a limitation of your platform -- that code is only compiled if HAS_GETRANDOM is set by the configure script, so apparently ./configure determined that it exists, but the compiler thinks it doesn't. Maybe it's in a different header file? Please understand that your platform is not officially supported so we can only provide limited hints. On Wed, Sep 15, 2021 at 10:19 AM Sandeep Gupta <gupta.sandeep@gmail.com> wrote:
I am trying to compile Python3.10rc2 on rather unusual platform (termux on android). The gcc version is listed below: ~ $ g++ -v clang version 12.0.1 Target: aarch64-unknown-linux-android24 Thread model: posix InstalledDir: /data/data/com.termux/files/usr/bin
I get following warnings and errors: Python/pytime.c:398:10: warning: implicit conversion from 'long' to 'double' changes value from 9223372036854775807 to 9223372036854775808 [-Wimplicit-const-int-float-conver sion] if (!_Py_InIntegralTypeRange(_PyTime_t, d)) {
Python/bootstrap_hash.c:141:17: error: implicit declaration of function 'getrandom' is invalid in C99 [-Werror,-Wimplicit-function-declaration] n = getrandom(dest, n, flags); ^ Python/bootstrap_hash.c:145:17: error: implicit declaration of function 'getrandom' is invalid in C99 [-Werror,-Wimplicit-function-declaration] n = getrandom(dest, n, flags);
Not sure if this is limitation of the platform or Python codebase needs fixes.
Thanks -S _______________________________________________ Python-Dev mailing list -- python-dev@python.org To unsubscribe send an email to python-dev-leave@python.org https://mail.python.org/mailman3/lists/python-dev.python.org/ Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/KEURSMCL... Code of Conduct: http://python.org/psf/codeofconduct/
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Hi, On Wed, Sep 15, 2021 at 7:16 PM Sandeep Gupta <gupta.sandeep@gmail.com> wrote:
I get following warnings and errors: Python/pytime.c:398:10: warning: implicit conversion from 'long' to 'double' changes value from 9223372036854775807 to 9223372036854775808 [-Wimplicit-const-int-float-conver sion] if (!_Py_InIntegralTypeRange(_PyTime_t, d)) {
This warning is tracked at: https://bugs.python.org/issue39277 I proposed a fix but i'm not sure that it's correct and so I never did anything with this PR: https://github.com/python/cpython/pull/17933
Python/bootstrap_hash.c:141:17: error: implicit declaration of function 'getrandom' is invalid in C99 [-Werror,-Wimplicit-function-declaration] n = getrandom(dest, n, flags); ^ Python/bootstrap_hash.c:145:17: error: implicit declaration of function 'getrandom' is invalid in C99 [-Werror,-Wimplicit-function-declaration] n = getrandom(dest, n, flags);
This code path should only be taken if HAVE_GETRANDOM macro is defined. Is it defined in your pyconfig.h file? Is the getrandom() function available in your libc? configure.ac tries to build this code: --- #include <sys/random.h> int main() { char buffer[1]; const size_t buflen = sizeof(buffer); const int flags = 0; /* ignore the result, Python checks for ENOSYS at runtime */ (void)getrandom(buffer, buflen, flags); return 0; } --- Maybe Android needs a different #include? Or a different test?
Not sure if this is limitation of the platform or Python codebase needs fixes.
Enhancements are welcomed :-) Victor -- Night gathers, and now my watch begins. It shall not end until my death.
As you are using termux it might be worth checking out the build arguments and patches termux uses to build their own version of python (Currently 3.9.7): https://github.com/termux/termux-packages/tree/master/packages/python I'm not sure if this will be enough to build python3.10 or if additional patches and build arguments are needed though. Adrian On 9/15/21 19:06, Sandeep Gupta wrote:
I am trying to compile Python3.10rc2 on rather unusual platform (termux on android). The gcc version is listed below: ~ $ g++ -v clang version 12.0.1 Target: aarch64-unknown-linux-android24 Thread model: posix InstalledDir: /data/data/com.termux/files/usr/bin
I get following warnings and errors: Python/pytime.c:398:10: warning: implicit conversion from 'long' to 'double' changes value from 9223372036854775807 to 9223372036854775808 [-Wimplicit-const-int-float-conver sion] if (!_Py_InIntegralTypeRange(_PyTime_t, d)) {
Python/bootstrap_hash.c:141:17: error: implicit declaration of function 'getrandom' is invalid in C99 [-Werror,-Wimplicit-function-declaration] n = getrandom(dest, n, flags); ^ Python/bootstrap_hash.c:145:17: error: implicit declaration of function 'getrandom' is invalid in C99 [-Werror,-Wimplicit-function-declaration] n = getrandom(dest, n, flags);
Not sure if this is limitation of the platform or Python codebase needs fixes.
Thanks -S
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I looked a bit more into this and managed to run python 3.10.0rc2 on android in termux. No additional patches were needed, but the build process isn't straight forward. Some packages don't build on-device and have to be built on a computer. Python is one of them (https://github.com/termux/termux-packages/issues/4157. The issue is closed because making all packages build on-device is no longer a goal of termux) Follow https://github.com/termux/termux-packages/wiki/Build-environment to set up your termux build environment. You can use Docker, Vagrant, Ubuntu or Arch Linux. I used docker. Next build and install python3.10.0rc2 *on the build machine*. You need python3.10 installed to cross-compile python3.10. After that go back to the termux packages and change packages/python/build.sh. All you need to change is version number, url and hash. Here's a patch anyways: diff --git a/packages/python/build.sh b/packages/python/build.sh index c36bff5e5..d9fd86d02 100644 --- a/packages/python/build.sh +++ b/packages/python/build.sh @@ -2,10 +2,11 @@ TERMUX_PKG_HOMEPAGE=https://python.org/ TERMUX_PKG_DESCRIPTION="Python 3 programming language intended to enable clear programs" TERMUX_PKG_LICENSE="PythonPL" TERMUX_PKG_MAINTAINER="@termux" -_MAJOR_VERSION=3.9 -TERMUX_PKG_VERSION=${_MAJOR_VERSION}.7 -TERMUX_PKG_SRCURL=https://www.python.org/ftp/python/${TERMUX_PKG_VERSION}/Python-${TERMUX_PKG_VERSION}.tar.xz -TERMUX_PKG_SHA256=f8145616e68c00041d1a6399b76387390388f8359581abc24432bb969b5e3c57 +_MAJOR_VERSION=3.10 +_MINOR_VERSION=.0 +TERMUX_PKG_VERSION=${_MAJOR_VERSION}${_MINOR_VERSION}rc2 +TERMUX_PKG_SRCURL=https://www.python.org/ftp/python/${_MAJOR_VERSION}${_MINOR_VERSION}/Python-${TERMUX_PKG_VERSION}.tar.xz +TERMUX_PKG_SHA256=e75b56088548b7b9ad1f2571e6f5a2315e4808cb6b5fbe8288502afc802b2f24 TERMUX_PKG_DEPENDS="gdbm, libandroid-support, libbz2, libcrypt, libffi, liblzma, libsqlite, ncurses, ncurses-ui-libs, openssl, readline, zlib" TERMUX_PKG_RECOMMENDS="clang, make, pkg-config" TERMUX_PKG_SUGGESTS="python-tkinter" Finally just run "./build-package.sh -i -f python" and send "output/python*.deb" to your phone, where you can install it using dpkg -i. Adrian On 9/16/21 14:27, Adrian Freund wrote:
As you are using termux it might be worth checking out the build arguments and patches termux uses to build their own version of python (Currently 3.9.7): https://github.com/termux/termux-packages/tree/master/packages/python
I'm not sure if this will be enough to build python3.10 or if additional patches and build arguments are needed though.
Adrian
On 9/15/21 19:06, Sandeep Gupta wrote:
I am trying to compile Python3.10rc2 on rather unusual platform (termux on android). The gcc version is listed below: ~ $ g++ -v clang version 12.0.1 Target: aarch64-unknown-linux-android24 Thread model: posix InstalledDir: /data/data/com.termux/files/usr/bin
I get following warnings and errors: Python/pytime.c:398:10: warning: implicit conversion from 'long' to 'double' changes value from 9223372036854775807 to 9223372036854775808 [-Wimplicit-const-int-float-conver sion] if (!_Py_InIntegralTypeRange(_PyTime_t, d)) {
Python/bootstrap_hash.c:141:17: error: implicit declaration of function 'getrandom' is invalid in C99 [-Werror,-Wimplicit-function-declaration] n = getrandom(dest, n, flags); ^ Python/bootstrap_hash.c:145:17: error: implicit declaration of function 'getrandom' is invalid in C99 [-Werror,-Wimplicit-function-declaration] n = getrandom(dest, n, flags);
Not sure if this is limitation of the platform or Python codebase needs fixes.
Thanks -S
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participants (5)
-
Adrian Freund -
Guido van Rossum -
Jelle Zijlstra -
Sandeep Gupta -
Victor Stinner