[android] Cannot specify link libraries for target "mdk" which is not built by this

[abdelaziz-mahdy]

* What went wrong:
Execution failed for task ':fvp:configureCMakeDebug'.
> C/C++: /Users/AbdelazizMahdy/.pub-cache/hosted/pub.dev/fvp-0.1.0/android/CMakeLists.txt debug|armeabi-v7a : CMake Error at /Users/AbdelazizMahdy/.pub-cache/hosted/pub.dev/fvp-0.1.0/android/mdk-sdk/lib/cmake/FindMDK.cmake:260 (target_link_libraries):
    Cannot specify link libraries for target "mdk" which is not built by this
    project.
  Call Stack (most recent call first):
    CMakeLists.txt:67 (include)

[wang-bin]

what's your cmake version?

[abdelaziz-mahdy]

what's your cmake version?

i dont know how to check it, can you let me know.

in terminal its cmake version 3.27.1

but i dont know if that what flutter uses

[abdelaziz-mahdy]

You are running version 3.10.2 this is the cmake version flutter is using when building

also this is the line causing the problem target_link_libraries(mdk INTERFACE mdk-ffmpeg) # ensure libffmpeg.so will be copied by gradle

in the findMDK.cmake

also i tried to play with the configs abit

like setting in find mdk

cmake_minimum_required(VERSION 3.10)

# Project-level configuration.
set(PROJECT_NAME "mdk")
project(${PROJECT_NAME} LANGUAGES CXX)
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

but i made more errors appear i think

  -- Build files have been written to: /Users/AbdelazizMahdy/flutter_projects/fvp/android/.cxx/Debug/1x3s5o22/armeabi-v7a
  [1/3] Building CXX object CMakeFiles/fvp_plugin.dir/fvp_plugin.cpp.o
  FAILED: CMakeFiles/fvp_plugin.dir/fvp_plugin.cpp.o 
  /Users/AbdelazizMahdy/Library/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++ --target=armv7-none-linux-androideabi16 --gcc-toolchain=/Users/AbdelazizMahdy/Library/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64 --sysroot=/Users/AbdelazizMahdy/Library/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot  -DDART_SHARED_LIB -DFLUTTER_PLUGIN_IMPL -Dfvp_plugin_EXPORTS  -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -march=armv7-a -mthumb -Wformat -Werror=format-security   -O0 -fno-limit-debug-info  -fPIC -fvisibility=hidden   -std=gnu++1z -MD -MT CMakeFiles/fvp_plugin.dir/fvp_plugin.cpp.o -MF CMakeFiles/fvp_plugin.dir/fvp_plugin.cpp.o.d -o CMakeFiles/fvp_plugin.dir/fvp_plugin.cpp.o -c ../../../../fvp_plugin.cpp
  ../../../../fvp_plugin.cpp:10:10: fatal error: 'mdk/Player.h' file not found
  #include <mdk/Player.h>
           ^~~~~~~~~~~~~~
  1 error generated.
  [2/3] Building CXX object CMakeFiles/fvp_plugin.dir/Users/AbdelazizMahdy/flutter_projects/fvp/lib/src/callbacks.cpp.o
  FAILED: CMakeFiles/fvp_plugin.dir/Users/AbdelazizMahdy/flutter_projects/fvp/lib/src/callbacks.cpp.o 
  /Users/AbdelazizMahdy/Library/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/bin/clang++ --target=armv7-none-linux-androideabi16 --gcc-toolchain=/Users/AbdelazizMahdy/Library/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64 --sysroot=/Users/AbdelazizMahdy/Library/Android/sdk/ndk/21.4.7075529/toolchains/llvm/prebuilt/darwin-x86_64/sysroot  -DDART_SHARED_LIB -DFLUTTER_PLUGIN_IMPL -Dfvp_plugin_EXPORTS  -g -DANDROID -fdata-sections -ffunction-sections -funwind-tables -fstack-protector-strong -no-canonical-prefixes -D_FORTIFY_SOURCE=2 -march=armv7-a -mthumb -Wformat -Werror=format-security   -O0 -fno-limit-debug-info  -fPIC -fvisibility=hidden   -std=gnu++1z -MD -MT CMakeFiles/fvp_plugin.dir/Users/AbdelazizMahdy/flutter_projects/fvp/lib/src/callbacks.cpp.o -MF CMakeFiles/fvp_plugin.dir/Users/AbdelazizMahdy/flutter_projects/fvp/lib/src/callbacks.cpp.o.d -o CMakeFiles/fvp_plugin.dir/Users/AbdelazizMahdy/flutter_projects/fvp/lib/src/callbacks.cpp.o -c /Users/AbdelazizMahdy/flutter_projects/fvp/lib/src/callbacks.cpp
  /Users/AbdelazizMahdy/flutter_projects/fvp/lib/src/callbacks.cpp:5:10: fatal error: 'mdk/Player.h' file not found
  #include "mdk/Player.h"
           ^~~~~~~~~~~~~~
  1 error generated.
  ninja: build stopped: subcommand failed.

[abdelaziz-mahdy]

i just cloned the repo and it works on your example, which is weird,

since using i am using the package locally on both cases while trying.

the only reason i think it maybe failing is gradle versions or cmake versions, since your was using cmake 3.22 mine was 3.10

[wang-bin]

What about upgrading your cmake?

[abdelaziz-mahdy]

i dont know how to do it in flutter, does setting the ndk version does that?

[wang-bin]

btw, you have to upgrade ndk too. I use ndk 25, but ndk 23 breaks abi, you must use ndk 23 or later

[abdelaziz-mahdy]

i did set the ndk version for ndkVersion "25.2.9519653" but the cmake is still version 3.10.2

[abdelaziz-mahdy]

setting version "3.22.1" in your package

   externalNativeBuild {
        cmake {
            // version "Your.CMake.Version"

            path "CMakeLists.txt"
            // The default CMake version for the Android Gradle Plugin is 3.10.2.
            // https://developer.android.com/studio/projects/install-ndk#vanilla_cmake
            //
            // The Flutter tooling requires that developers have CMake 3.10 or later
            // installed. You should not increase this version, as doing so will cause
            // the plugin to fail to compile for some customers of the plugin.
            // version "3.10.2"
            version "3.22.1"
        }
    }

made it compile without errors finally i think thats not a valid fix since it just has to be higher than 3.20 correct?

but at least now we know what is the problem

[wang-bin]

i need to know how cmake version is selected. If use ndk 23 or later is installed, then higher version of ndk and cmake will be used.

[abdelaziz-mahdy]

when i did use ndkVersion "25.2.9519653" alone it was still using cmake 3.10.2

setting the cmake like mentioned was the only fix that worked for my case

i updated the pr to allow anything after 3.22.0, do you think we should set the ndk version in the package to make sure all people has the cmake version updated?

[abdelaziz-mahdy]

maybe this is the cause https://developer.android.com/studio/projects/install-ndk#vanilla_cmake

your example uses classpath 'com.android.tools.build:gradle:8.0.2'

and mine uses classpath 'com.android.tools.build:gradle:7.0.4'

so from the image by default i use the 21.4.7075529 this is the main problem i think

[AnonymHK]

Okay, I'll give it a try ！

[abdelaziz-mahdy]

updating from classpath 'com.android.tools.build:gradle:7.0.4' to classpath 'com.android.tools.build:gradle:7.4.2' fixed the error also i updated to version 0.2.0

[AnonymHK]

This solution is not valid for me. I will try again after your new version is released!

[abdelaziz-mahdy]

This solution is not valid for me. I will try again after your new version is released!

your issue is related to this https://github.com/wang-bin/fvp/pull/13 so its okay