New submission from Xavier de Gaye:
On the latest Android API level (android-24), the if_nameindex function is now
found by configure in Android libc. But the if_nameindex function and
structure are still not defined in the Android net/if.h header.
The compilation fails with:
clang --sysroot=/opt/android-ndk/platforms/android-24/arch-x86 -target
i686-none-linux-androideabi -gcc-toolchain
/opt/android-ndk/toolchains/x86-4.9/prebuilt/linux-x86_64 -Wno-unused-result
-Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall
-Wstrict-prototypes -Wno-unused-value -Wno-empty-body -Qunused-arguments
-Wno-parentheses-equality -std=c99 -Wextra -Wno-unused-result
-Wno-unused-parameter -Wno-missing-field-initializers -I. -IObjects -IInclude
-IPython
-I/home/xavier/src/android/pyona/build/python3.7-install-android-24-x86/org.bitbucket.pyona/include
-I/opt/android-ndk/platforms/android-24/arch-x86/usr/include
-I/path/to/android/cpython/Include
-I/home/xavier/src/android/pyona/build/python3.7-android-24-x86 -c
/path/to/android/cpython/Modules/socketmodule.c -o
build/temp.linux-i686-3.7/path/to/android/cpython/Modules/socketmodule.o
/path/to/android/cpython/Modules/socketmodule.c:1034:29: warning: comparison of
integers of different signs: 'socklen_t' (aka 'int') and 'size_t' (aka
'unsigned int') [-Wsign-compare]
if (res->ai_addrlen < addr_ret_size)
~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~
/path/to/android/cpython/Modules/socketmodule.c:1125:25: warning: comparison of
integers of different signs: 'socklen_t' (aka 'int') and 'size_t' (aka
'unsigned int') [-Wsign-compare]
if (res->ai_addrlen < addr_ret_size)
~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~
/path/to/android/cpython/Modules/socketmodule.c:4925:15: warning: implicit
declaration of function 'sethostname' is invalid in C99
[-Wimplicit-function-declaration]
res = sethostname(buf.buf, buf.len);
^
/path/to/android/cpython/Modules/socketmodule.c:6242:10: warning: implicit
declaration of function 'if_nameindex' is invalid in C99
[-Wimplicit-function-declaration]
ni = if_nameindex();
^
/path/to/android/cpython/Modules/socketmodule.c:6242:8: warning: incompatible
integer to pointer conversion assigning to 'struct if_nameindex *' from 'int'
[-Wint-conversion]
ni = if_nameindex();
^ ~~~~~~~~~~~~~~
/path/to/android/cpython/Modules/socketmodule.c:6250:9: warning: implicit
declaration of function 'if_freenameindex' is invalid in C99
[-Wimplicit-function-declaration]
if_freenameindex(ni);
^
/path/to/android/cpython/Modules/socketmodule.c:6254:19: error: subscript of
pointer to incomplete type 'struct if_nameindex'
for (i = 0; ni[i].if_index != 0 && i < INT_MAX; i++) {
~~^
/path/to/android/cpython/Modules/socketmodule.c:6240:12: note: forward
declaration of 'struct if_nameindex'
struct if_nameindex *ni;
^
/path/to/android/cpython/Modules/socketmodule.c:6256:19: error: subscript of
pointer to incomplete type 'struct if_nameindex'
ni[i].if_index, PyUnicode_DecodeFSDefault, ni[i].if_name);
~~^
/path/to/android/cpython/Modules/socketmodule.c:6240:12: note: forward
declaration of 'struct if_nameindex'
struct if_nameindex *ni;
^
/path/to/android/cpython/Modules/socketmodule.c:6256:62: error: subscript of
pointer to incomplete type 'struct if_nameindex'
ni[i].if_index, PyUnicode_DecodeFSDefault, ni[i].if_name);
~~^
/path/to/android/cpython/Modules/socketmodule.c:6240:12: note: forward
declaration of 'struct if_nameindex'
struct if_nameindex *ni;
^
6 warnings and 3 errors generated.
----------
messages: 279495
nosy: xdegaye
priority: normal
severity: normal
stage: needs patch
status: open
title: _socket module cross-compilation error on android-24
type: compile error
versions: Python 3.6, Python 3.7
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Python tracker <[email protected]>
<http://bugs.python.org/issue28538>
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