[mythtv] Android 32bit build

Mark Spieth mark at digivation.com.au
Sat Aug 11 04:09:37 UTC 2018 

On 8/11/2018 1:49 PM, Peter Bennett wrote:
>
>
>
> On 08/10/2018 06:45 PM, Mark Spieth wrote:
>> On 8/11/2018 7:11 AM, Peter Bennett wrote:
>>>
>>>
>>>
>>> On 08/09/2018 06:26 PM, Mark Spieth wrote:
>>>> On 8/10/2018 7:27 AM, Peter Bennett wrote:
>>>>>
>>>>>
>>>>>
>>>>> On 08/08/2018 08:14 PM, Mark Spieth wrote:
>>>>>> On 09/08/18 08:37, Peter Bennett wrote:
>>>>>>> I am trying to build the libraries for 32bit.
>>>>>>>
>>>>>>> liblzo fails in the configure "C compiler cannot create 
>>>>>>> executables"
>>>>>>>
>>>>>>> makelibs.sh has, for 32bit,     CPU="armv7-a"
>>>>>>>
>>>>>>> The configure runs this
>>>>>>>
>>>>>>> /home/peter/android/android-ndk/my-android-toolchain/bin/arm-linux-androideabi-gcc 
>>>>>>> -isysroot 
>>>>>>> /home/peter/android/android-ndk/my-android-toolchain/sysroot 
>>>>>>> -mcpu=armv7-a   conftest.c
>>>>>>>
>>>>>>> The error is
>>>>>>>
>>>>>>> arm-linux-androideabi-gcc: error: unrecognized argument in 
>>>>>>> option '-mcpu=armv7-a'
>>>>>>> arm-linux-androideabi-gcc: note: valid arguments to '-mcpu=' 
>>>>>>> are: arm1020e arm1020t arm1022e arm1026ej-s arm10e arm10tdmi 
>>>>>>> arm1136j-s arm1136jf-s arm1156t2-s arm1156t2f-s arm1176jz-s 
>>>>>>> arm1176jzf-s arm2 arm250 arm3 arm6 arm60 arm600 arm610 arm620 
>>>>>>> arm7 arm70 arm700 arm700i arm710 arm7100 arm710c arm710t arm720 
>>>>>>> arm720t arm740t arm7500 arm7500fe arm7d arm7di arm7dm arm7dmi 
>>>>>>> arm7m arm7tdmi arm7tdmi-s arm8 arm810 arm9 arm920 arm920t 
>>>>>>> arm922t arm926ej-s arm940t arm946e-s arm966e-s arm968e-s arm9e 
>>>>>>> arm9tdmi cortex-a12 cortex-a15 cortex-a15.cortex-a7 cortex-a5 
>>>>>>> cortex-a53 cortex-a57 cortex-a57.cortex-a53 cortex-a7 cortex-a8 
>>>>>>> cortex-a9 cortex-m0 cortex-m0plus cortex-m1 cortex-m3 cortex-m4 
>>>>>>> cortex-r4 cortex-r4f cortex-r5 cortex-r7 ep9312 fa526 fa606te 
>>>>>>> fa626 fa626te fa726te fmp626 generic-armv7-a iwmmxt iwmmxt2 
>>>>>>> marvell-pj4 mpcore mpcorenovfp native strongarm strongarm110 
>>>>>>> strongarm1100 strongarm1110 xscale
>>>>>>>
>>>>>>> I tried changing CPU to use generic-armv7-a which is one of the 
>>>>>>> "valid" arguments according to above message. That gives the 
>>>>>>> same error, but this time not even displaying the list of "valid 
>>>>>>> arguments".
>>>>>>>
>>>>>>> ndk is android-ndk-r13b
>>>>>>>
>>>>>>> Any suggestions?
>>>>>>>
>>>>>> try this.
>>>>>>
>>>>>> diff --git a/android/makelibs.sh b/android/makelibs.sh
>>>>>> index 9d737b2..8c54895 100755
>>>>>> --- a/android/makelibs.sh
>>>>>> +++ b/android/makelibs.sh
>>>>>> @@ -1179,17 +1179,15 @@ OPATH=$PATH
>>>>>>  #              ;;
>>>>>>  #      *)
>>>>>>  #END
>>>>>> +export PATH="$PATH:$CROSSPATH"
>>>>>>  ./configure \
>>>>>> -       CFLAGS="-isysroot $SYSROOT -mcpu=$CPU" \
>>>>>> -       CXXFLAGS="-isysroot $SYSROOT -mcpu=$CPU" \
>>>>>> -       CC="$CROSSPATH/$MY_ANDROID_NDK_TOOLS_PREFIX-gcc" \
>>>>>> - CXX="$CROSSPATH/$MY_ANDROID_NDK_TOOLS_PREFIX-g++" \
>>>>>> - CPP="$CROSSPATH/$MY_ANDROID_NDK_TOOLS_PREFIX-cpp" \
>>>>>> -       --host=arm-linux-androideabi \
>>>>>> +       --host=$MY_ANDROID_NDK_TOOLS_PREFIX \
>>>>>>         --prefix=$INSTALLROOT \
>>>>>>         --enable-shared \
>>>>>>         --enable-static && \
>>>>>>  make clean && \
>>>>>> +CFLAGS="-isysroot $SYSROOT -mcpu=$CPU" \
>>>>>> +CXXFLAGS="-isysroot $SYSROOT -mcpu=$CPU" \
>>>>>>  make -j$NCPUS src/liblzo2.la && \
>>>>>>  make install-libLTLIBRARIES install-data-am
>>>>>>  ERR=$?
>>>>>>
>>>>>> builds for me both 32 and 64 but untested on targets.
>>>>>>
>>>>>> Mark
>>>>>>
>>>>>>
>>>>> Thank you, it now builds and installs on my 32-bit tablet. However 
>>>>> it does not run.
>>>>>
>>>>> D/dalvikvm( 6836): Trying to load lib 
>>>>> /data/data/org.mythtv.mythfrontend/lib/libQt5Core.so 0x4199b580
>>>>> E/dalvikvm( 6836): 
>>>>> dlopen("/data/data/org.mythtv.mythfrontend/lib/libQt5Core.so") 
>>>>> failed: Cannot load library: soinfo_relocate(linker.cpp:976): 
>>>>> cannot locate symbol "srand" referenced by "libQt5Core.so"...
>>>>> W/System.err( 6836): java.lang.reflect.InvocationTargetException
>>>>> ...
>>>>> W/System.err( 6836): Caused by: java.lang.UnsatisfiedLinkError: 
>>>>> Cannot load library: soinfo_relocate(linker.cpp:976): cannot 
>>>>> locate symbol "srand" referenced by "libQt5Core.so"...
>>>>>
>>>>> Some internet links about this -
>>>>>
>>>>> /For those stumbling onto this thread while having trouble with 
>>>>> srand/atof on NDK r10c: Make sure you set your android target to 
>>>>> 19. Your app should then work on Android 5 (21) as well as all 
>>>>> lower versions.//
>>>>> /
>>>>> /if i use Android 19 to compile the codes that invoke srand(), 
>>>>> because srand() is a static inline function, so it will invoke 
>>>>> srand48 instead, which means cocos2d-x depends on srand48 instead 
>>>>> of srand. srand48 is defined in all Android versions, so there is 
>>>>> not problem.//
>>>>> //i using Android 21+ to compiling the codes, srand() is defined 
>>>>> like void srand(unsigned int);, so cocos2d-x depends on srand. 
>>>>> Because srand is not defined below Android 21, so it will have 
>>>>> problem if running on Android version below 21.//
>>>>> /
>>>>> My tablet has android 4.2.2, which should be ok with api version 
>>>>> 21, I would think.
>>>> Ah 4.2.2.
>>>>
>>>> I have a "special" build mode.
>>>>
>>>> ./makelibs.sh --oldarm all
>>>> ./mythbuild --oldarm
>>>>
>>>> It did work for me for 4.2.2 and 4.4 like my projector and my TV. 
>>>> 32 bit only build too.
>>>>
>>>> I just noticed that there may be some inconsistencies between 
>>>> makelibs and mythbuild for ANDROID_NATIVE_API_LEVEL.
>>>> That may (or not) need to be resolved.
>>>>
>>>> Also this is untested with newer lib additions as yet.
>>>>
>>>> HTH
>>>> Mark
>>>>
>>> Hi Mark
>>>
>>> --oldarm successfully compiled and installed after a couple of tweaks.
>>>
>>> Now it fails with
>>>
>>> D/dalvikvm( 9979): Trying to load lib 
>>> /data/data/org.mythtv.mythfrontend/qt-reserved-files/plugins/platforms/android/libqtforandroid.so 
>>> 0x4212fc50
>>> E/dalvikvm( 9979): 
>>> dlopen("/data/data/org.mythtv.mythfrontend/qt-reserved-files/plugins/platforms/android/libqtforandroid.so") 
>>> failed: Cannot load library: soinfo_link_image(linker.cpp:1636): 
>>> could not load library "libfreetype.so" needed by 
>>> "libqtforandroid.so"; caused by load_library(linker.cpp:746): 
>>> library "libfreetype.so" not found
>>>
>>> I checked, libfreetype.so does exist in 
>>> /data/data/org.mythtv.mythfrontend/lib/
>>> It is the correct file type
>>> peter at andromeda:~$ file 
>>> '/home/peter/proj/github.com/MythTV/packaging/android/mythinstallold/libs/armeabi-v7a/libfreetype.so'
>>> /home/peter/proj/github.com/MythTV/packaging/android/mythinstallold/libs/armeabi-v7a/libfreetype.so: 
>>> ELF 32-bit LSB shared object, ARM, EABI5 version 1 (SYSV), 
>>> dynamically linked, interpreter /system/bin/linker, stripped
>>>
>>> Perhaps it is supposed to be in directory 
>>> /data/data/org.mythtv.mythfrontend/qt-reserved-files/plugins/platforms/android/ 
>>> where that libqtforandroid.so is found.
>>>
>>> Adding to my confusion is the fact that in the apk we do not deploy 
>>> a file called 
>>> qt-reserved-files/plugins/platforms/android/libqtforandroid.so - we 
>>> actually deploy 
>>> lib/armeabi-v7a/libplugins_platforms_android_libqtforandroid.so and 
>>> by some magic it maybe gets renamed and moved, or possibly just linked.
>>>
>>> On android the file 
>>> /data/data/org.mythtv.mythfrontend/libplugins_platforms_android_libqtforandroid.so 
>>> exists and can be listed.
>>> I am unable to list 
>>> /data/data/org.mythtv.mythfrontend/qt-reserved-files/plugins/platforms/android/, 
>>> I get Permission denied.
>>>
>>> If you don't know what is going on here, no worry this is not 
>>> important, just something I am trying for interest and learning.
>> On android you cant have a deep lib directory. I has to be 
>> shallow/flat. So I came up with the above flattening schema to allow 
>> plugins to be distinct (also filters).
>> However freetype should be there since it's build and deployed.
>> I havent build oldarm for a while esp. since the external lib 
>> refactor. Ill investigate.
>>
>> Note: I am learning too. I haven't done much of importance/large with 
>> android except this. If it looks like I know what I'm doing then I've 
>> pulled the wool over your eyes well.
>>
>> Mark
>
> I did have to remove "android:banner="@drawable/banner" from the 
> Manifest to get it to create the package with --oldarm
> See attached patch.
Good solution. Commit it.

Mark


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