Ytukyg

I tried to compile ffmpeg for android on Mac, but it does not work for me.

#!/bin/bash

NDK=/Users/user/Library/Android/sdk/ndk-bundle

SYSROOT=$NDK/platforms/android-18/arch-arm/

TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64



function build_one

{

    ./configure 

    --prefix=$PREFIX 

    --enable-shared 

    --disable-static 

    --disable-doc 

    --disable-ffmpeg 

    --disable-ffplay 

    --disable-ffprobe 

    --disable-network 

    --disable-filters 

    --disable-avdevice 

    --disable-doc 

    --disable-symver 

    --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- 

    --target-os=linux 

    --arch=arm 

    --enable-cross-compile 

    --sysroot=$SYSROOT 

    --extra-cflags="-Os -fpic $ADDI_CFLAGS" 

    --extra-ldflags="$ADDI_LDFLAGS" 

    $ADDITIONAL_CONFIGURE_FLAG



    make clean all

    make

    make install

}



CPU=arm

PREFIX=$(pwd)/android/$CPU 

ADDI_CFLAGS="-marm"



build_one

I also give execute permission via chmod +x build_script.sh

I tried ffmpeg 4.1 and 4.0.3 but both are not work and same error reason.

I also tried on android-21 and android-18

test_cpp_condition stddef.h defined __ARM_ARCH_4__ || defined __TARGET_ARCH_4

test_cpp

BEGIN /tmp/ffconf.bgSdFwkD/test.c

    1   #include <stddef.h>

    2   #if !(defined __ARM_ARCH_4__ || defined __TARGET_ARCH_4)

    3   #error "unsatisfied condition: defined __ARM_ARCH_4__ || defined __TARGET_ARCH_4"

    4   #endif

END /tmp/ffconf.bgSdFwkD/test.c

/Users/user/Library/Android/sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-gcc --sysroot=/Users/user/Library/Android/sdk/ndk-bundle/platforms/android-21/arch-arm/ -Os -fpic -marm -E -o /tmp/ffconf.bgSdFwkD/test.o /tmp/ffconf.bgSdFwkD/test.c

/tmp/ffconf.bgSdFwkD/test.c:3:2: error: "unsatisfied condition: defined __ARM_ARCH_4__ || defined __TARGET_ARCH_4"

#error "unsatisfied condition: defined __ARM_ARCH_4__ || defined __TARGET_ARCH_4"

 ^

1 error generated.

test_cpp_condition stddef.h defined __ARM_ARCH_4T__ || defined __TARGET_ARCH_4T

test_cpp

BEGIN /tmp/ffconf.bgSdFwkD/test.c

    1   #include <stddef.h>

    2   #if !(defined __ARM_ARCH_4T__ || defined __TARGET_ARCH_4T)

    3   #error "unsatisfied condition: defined __ARM_ARCH_4T__ || defined __TARGET_ARCH_4T"

    4   #endif

END /tmp/ffconf.bgSdFwkD/test.c

/Users/user/Library/Android/sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-gcc --sysroot=/Users/user/Library/Android/sdk/ndk-bundle/platforms/android-21/arch-arm/ -Os -fpic -marm -E -o /tmp/ffconf.bgSdFwkD/test.o /tmp/ffconf.bgSdFwkD/test.c

test_ld cc

test_cc

BEGIN /tmp/ffconf.bgSdFwkD/test.c

    1   int main(void){ return 0; }

END /tmp/ffconf.bgSdFwkD/test.c

/Users/user/Library/Android/sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-gcc --sysroot=/Users/user/Library/Android/sdk/ndk-bundle/platforms/android-21/arch-arm/ -Os -fpic -marm -march=armv4t -c -o /tmp/ffconf.bgSdFwkD/test.o /tmp/ffconf.bgSdFwkD/test.c

/Users/user/Library/Android/sdk/ndk-bundle/toolchains/arm-linux-androideabi-4.9/prebuilt/darwin-x86_64/bin/arm-linux-androideabi-gcc --sysroot=/Users/user/Library/Android/sdk/ndk-bundle/platforms/android-21/arch-arm/ -march=armv4t -o /tmp/ffconf.bgSdFwkD/test /tmp/ffconf.bgSdFwkD/test.o

ld: unknown option: --sysroot=/Users/user/Library/Android/sdk/ndk-bundle/platforms/android-21/arch-arm/

clang: error: linker command failed with exit code 1 (use -v to see invocation)

C compiler test failed.

Is there any tools/Applications or libraries I have to additionally install for compiling? I'm confused.... (THIS QUESTION IS MAY DUPLICATE BUT NONE OF SOLUTION WAS WORKED FOR ME)

EDIT To clarify my system environment.

• Mac OS X High Sierra (10.13.6)


• Android NDK (18.1.5063045)


• Android SDK Tools and SDK Build-Tools


• CMake

EDIT I also tried ffmpeg version 3.3.9 but it does not work either.

You can use wrappers https://github.com/WritingMinds/ffmpeg-android
if you want to use most of the command. It will increase the size of apk.

I also tried to compile it and after several attempts, I compiled my own one. But it is hard to integrate as well. I used below tutorials to compile it.

• https://medium.com/@ilja.kosynkin/building-ffmpeg-for-android-607222677a9e


• https://enoent.fr/blog/2014/06/20/compile-ffmpeg-for-android/


• https://yesimroy.gitbooks.io/android-note/content/compile_ffmpeg_for_android.html

But I just wanted to tell, use FFmpeg wrapper for it if u don't consider the size of apk. There is not the considerable gain of performance in own compiled FFmpeg. Use above mentioned wrapper u want. It works well. If u more enthusiastic about compile and integrate your own FFmpeg, try above tutorials.

I was installed NDK through Android Studio and I think it was the problem, so I downloaded Android NDK manually and now I can configure and run the makefile.

Wait! Not done yet. When I ran makefile with latest stable NDK (r16b), it says:
./libavutil/common.h:33:19: fatal error: errno.h: No such file or directory

According to this document, so I tried using NDK r15c and it finally works for me.

To summarize how I solve this problem: Manually install NDK r15c and DON'T FORGET update your shell script file!

Hope this help!!