[mythtv] Android build

[David Hampton]

On Tue, 2021-04-27 at 21:10 -0500, David Engel wrote:
> On Wed, Apr 28, 2021 at 11:18:16AM +1000, Mark Spieth wrote:
> > On 28/04/2021 10:54 am, John P Poet wrote:
> > > 
> > > 
> > > On Tue, Apr 27, 2021 at 5:40 PM Mark Spieth <
> > > mark at digivation.com.au
> > > <mailto:mark at digivation.com.au>> wrote:
> > > 
> > >     On 28/04/2021 6:52 am, John P Poet wrote:
> > > >     Are the instructions @
> > > >     
> > > > https://github.com/MythTV/packaging/blob/master/android/Readme.md
> > > >     <
> > > > https://github.com/MythTV/packaging/blob/master/android/Readme.md
> > > > >
> > > >     up to date? I am trying to build latest master on a Fedora
> > > > 34
> > > >     machine.
> > > > 
> > > >     First error I got was that
> > > >     Android/android-ndk/toolchains/llvm/prebuilt/linux-
> > > > x86_64/bin/aarch64-linux-android-clang
> > > >     did not exist. To fix that I soft linked the version
> > > > specific file:
> > > >     $ ln -s aarch64-linux-android29-clang aarch64-linux-
> > > > android-clang
> > > > 
> > > >     Then `make SDK=29 MODE=arm64 libs` produces:
> > > 
> > >     I have not used the command line variables in a long time.
> > > SDK=29
> > >     should not be necessary.
> > > 
> > >     In fact the SDK=XX mode may be broken. Not sure.
> > > 
> > >     Not sure about the override. shouldnt need to use the SDK=29
> > > it
> > >     should be the default. see setenv.sh.
> > > 
> > >     The NDK is still on 28. The layout changed and caused
> > > problems
> > >     when I tried it.
> > > 
> > >     I have recently been trying QT5.15.2 but had some problems
> > > but
> > >     there are a couple of fixes to the setenv script for
> > > detecting
> > >     tool paths which I will attach for you to test. This is still
> > > on
> > >     QT 5.14.1 but is sort of ready to go for qt 5.15.2 when I
> > > figure
> > >     out the issue (some API change I think).
> > > 
> > >     Then all I do is run 'make libs' and then 'make' or 'make
> > >     distclean everything'
> > > 
> > >     my buildrc will show you which NDK's Ive been trying. use
> > > android
> > >     studio to install ndks with the correct version.
> > > 
> > >     Sorry Ive been lazy and havent commited some of these updates
> > > yet.
> > >     Not happy yet with them and I dont want to break things.
> > > 
> > >     See how you go. But it does work for me.
> > > 
> > >     Mark
> > > 
> > > 
> > > Hi Mark,
> > > 
> > > That got me a lot further. Unfortunately it is now failing trying
> > > to
> > > build Qt 5.14.1 using build tools 29.0.3. Should I be using a
> > > different
> > > version?
> > > 
> > > Preparing build tree...
> > > Creating qmake...
> > > .....................................In file included from
> > > /home/john/src/Myth/Android/packaging/android/libs64/qt-
> > > everywhere-src-5.14.1/qtbase/include/QtCore/qfloat16.h:1,
> > >                  from
> > > /home/john/src/Myth/Android/packaging/android/libs64/qt-
> > > everywhere-src-
> > > 5.14.1/qtbase/include/QtCore/../../src/corelib/global/qendian.h:4
> > > 4,
> > >                  from
> > > /home/john/src/Myth/Android/packaging/android/libs64/qt-
> > > everywhere-src-5.14.1/qtbase/include/QtCore/qendian.h:1,
> > >                  from
> > > /home/john/src/Myth/Android/packaging/android/libs64/qt-
> > > everywhere-src-5.14.1/qtbase/src/corelib/codecs/qutfcodec.cpp:43:
> > > /home/john/src/Myth/Android/packaging/android/libs64/qt-
> > > everywhere-src-
> > > 5.14.1/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:
> > > 295:7:
> > > error: ‘numeric_limits’ is not a class template
> > >   295 | class numeric_limits<QT_PREPEND_NAMESPACE(qfloat16)> :
> > > public
> > > numeric_limits<float>
> > >       |       ^~~~~~~~~~~~~~
> > > /home/john/src/Myth/Android/packaging/android/libs64/qt-
> > > everywhere-src-
> > > 5.14.1/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:
> > > 295:77:
> > > error: expected template-name before ‘<’ token
> > >   295 | class numeric_limits<QT_PREPEND_NAMESPACE(qfloat16)> :
> > > public
> > > numeric_limits<float>
> > >       |                         ^
> > > /home/john/src/Myth/Android/packaging/android/libs64/qt-
> > > everywhere-src-
> > > 5.14.1/qtbase/include/QtCore/../../src/corelib/global/qfloat16.h:
> > > 295:77:
> > > error: expected ‘{’ before ‘<’ token
> > > ...
> > > 
> > > Thanks,
> > > 
> > > John
> > 
> > This sounds like an unsupported ndk version, compiler too new. I
> > had trouble
> > with ndk 22.1.7171670 with similar results. The c++ headers are a
> > bit
> > different I think but havent chased it down.
> > 
> > install one of the 21 ones. ~/Android/Sdk/ndk is where they live
> > and you can
> > see what is installed.
> > 
> > I have 21.0.6113669 and 21.4.7075529 installed. both work for me.
> 
> I haven't rebuilt my libs in ages.  In that past, that part has
> tended
> to be fragile and best left alone for Mark to fix! :) It looks like I
> last did that a little over a year ago with ndk 21.0.6113669.
> 
> David

I'm compiling regularly with ndk 21.0.6113669.

David H