CODEWITHSUNDEEP
androidffmpegandroid-ndkcross-compilingandroid-6.0-marshmallow
alijandro
alijandro

Reputation: 12147

executable binary cannot run on android marshmallow

I built ffmpeg executable binary with shared libraries on Android. But when I run it on Marshmallow, I got the following error, the executable can't run.

$ LD_LIBRARY_PATH=./lib ./bin/ffmpeg
CANNOT LINK EXECUTABLE: cannot find "libavformat.so" from verneed[0] in DT_NEEDED list for "./bin/ffmpeg"
page record for 0xb6eee00c was not found (block_size=16)

I already added --extra-ldexeflags="-pie" when compiled the binary.

The executable binary run properly on pre Marshmallow device.

I didn't encounter such problem before, did I miss something important? How can I make this binary work on Marshmallow?

More information about my environment.

I used android-ndk-r10e with

SYSROOT=$ANDROID_NDK_ROOT/platforms/android-19/arch-arm and toolchains version is

arm-linux-androideabi-gcc (GCC) 4.9 20140827 (prerelease)

If I built ffmpeg into a single executable binary (build the static libraries and then build into binary), it run properly.

Upvotes: 1

Views: 1967

Answers (1)

alijandro
alijandro

Reputation: 12147

After a lot of searching, I found a similar issue from here. There is a problem with my share libraries.

FFmpeg build script disable SONAME for android build, so there is no SONAME found when reading library by command

arm-linux-androideabi-readelf -d libavutil.so |grep soname

Change the configuration script like following, it will work.

    android)
    disable symver
    enable section_data_rel_ro
    SLIB_INSTALL_NAME='$(SLIBNAME)'
    SLIB_INSTALL_LINKS=
    # soname not set on purpose
    # soname should set for new version Android
    SHFLAGS='-shared -Wl,-soname,$$(word 1,$$(subst ., ,$$(@F))).so'
    # SHFLAGS=-shared

After then, recompile ffmpeg to generate share libraries, and I got the result I want,

$ arm-linux-androideabi-readelf -d libavutil.so |grep soname
0x0000000e (SONAME)                     Library soname: [libavutil.so]

Then, the executable binary run properly.

Upvotes: 3

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