Can someone help me with this error, I can't seem to identify the problem. I am also new in using Scons. I need to get through this to obtain the .aar and .apk files. I am using Iotivity for a project that allows users to share transfer images between devices of any platform without internet.
Command Prompt:
C:\Users\derrick\Desktop\iotivity-2.0.1.1\iotivity-2.0.1.1>scons TARGET_OS=android
scons: Reading SConscript files ...
Processing using SCons version 3.1.1
Python 2.7.17 (v2.7.17:c2f86d86e6, Oct 19 2019, 21:01:17) [MSC v.1500 64 bit (AMD64)] on win32
NameError: name 'host_arch' is not defined:
File "C:\Users\derrick\Desktop\iotivity-2.0.1.1\iotivity-2.0.1.1\SConstruct", line 32:
SConscript('build_common/SConscript')
File "c:\python27\lib\site-packages\scons\SCons\Script\SConscript.py", line 668:
return method(*args, **kw)
File "c:\python27\lib\site-packages\scons\SCons\Script\SConscript.py", line 605:
return _SConscript(self.fs, *files, **subst_kw)
File "c:\python27\lib\site-packages\scons\SCons\Script\SConscript.py", line 286:
exec(compile(scriptdata, scriptname, 'exec'), call_stack[-1].globals)
File "C:\Users\derrick\Desktop\iotivity-2.0.1.1\iotivity-2.0.1.1\build_common\SConscript", line 1025:
env.SConscript(target_os + '/SConscript')
File "c:\python27\lib\site-packages\scons\SCons\Script\SConscript.py", line 605:
return _SConscript(self.fs, *files, **subst_kw)
File "c:\python27\lib\site-packages\scons\SCons\Script\SConscript.py", line 286:
exec(compile(scriptdata, scriptname, 'exec'), call_stack[-1].globals)
File "C:\Users\derrick\Desktop\iotivity-2.0.1.1\iotivity-2.0.1.1\build_common\android\SConscript", line 19:
SConscript('#/extlibs/android/ndk/SConscript')
File "c:\python27\lib\site-packages\scons\SCons\Script\SConscript.py", line 668:
return method(*args, **kw)
File "c:\python27\lib\site-packages\scons\SCons\Script\SConscript.py", line 605:
return _SConscript(self.fs, *files, **subst_kw)
File "c:\python27\lib\site-packages\scons\SCons\Script\SConscript.py", line 286:
exec(compile(scriptdata, scriptname, 'exec'), call_stack[-1].globals)
File "C:\Users\derrick\Desktop\iotivity-2.0.1.1\iotivity-2.0.1.1\extlibs\android\ndk\SConscript", line 24:
if host_arch in ['x86_64']:
It's broken. I guess I'm the one who broke it when I tried to clean up that part of the build some years ago. The iotivity project CI system does not build android binaries on a windows host, it uses a linux builder for that, and I guess no developer did either so nothing detected the problem, which as the error message says, is that host_arch is undefined. This is not fundamental to iotivity, it's just dependency work to set up the Android NDK; once you have one set up this stuff is skipped for subsequent builds. The previous version switched on target_arch which wasn't right - the bundle to get depends on the host, not on what you're building for. I think the Android project stopped supporting 32-bit bundles a while back anyway so the simplest way to move forward is to remove the test (unless for some reason you have 32-bit Windows). That is, change this chunk starting with line 23:
else:
if host_arch in ['x86_64']:
ndk_url = ndk_url_base + '-windows-x86_64.exe'
else:
ndk_url = ndk_url_base + '-windows-x86.exe'
ndk_bundle = 'android-ndk-' + NDK_VER + '.exe'
to the simpler form:
else:
ndk_url = ndk_url_base + '-windows-x86_64.exe'
ndk_bundle = 'android-ndk-' + NDK_VER + '.exe'
(if it wasn't clear, that meant edit the file in the last line of the traceback, C:\Users\derrick\Desktop\iotivity-2.0.1.1\iotivity-2.0.1.1\extlibs\android\ndk\SConscript)