[mythtv] Android 32bit build

Fri Aug 10 22:45:02 UTC 2018

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
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