cmake equivalent for qmake's ANDROID_EXTRA_LIBS

Fausto01

Hello everyone,
I'm porting a project from Qt 5.15 to Qt 6.8.1 but I'm running into some problems.
In my app.pro file I have this line of code:

ANDROID_EXTRA_LIBS += $$PWD/ssl/android/arm64-v8a/libcrypto.so $$PWD/ssl/android/arm64-v8a/libssl.so

I need to port this in cmake and I found this: https://doc.qt.io/qt-6/android-openssl-support.html
At some point it says:

Alternatively, to add extra libraries, such as libcrypto and libssl. For CMake, use:

set_target_properties(<target_name> PROPERTIES
QT_ANDROID_EXTRA_LIBS "<path_to_libs_dir>/libcrypto_3.so" "<path_to_libs_dir>/libssl_3.so"
)

Or for qmake use:

ANDROID_EXTRA_LIBS +=
<path_to_libs_dir>/libcrypto_3.so
<path_to_libs_dir>/libssl_3.so

That's exactly what I need but when I put this line in my CMakeLists.txt

set_target_properties(SamsungRC PROPERTIES
    QT_ANDROID_EXTRA_LIBS "ssl/android/arm64-v8a/libcrypto.so" "ssl/android/arm64-v8a/libssl.so"
)

I get this error:

CMakeLists.txt:72: error: set_target_properties called with incorrect number of arguments.

Is the documentation wrong or am I missing something?
Thank you in advance

Fausto01

I've found the solution! (Qt doc is wrong)

set_target_properties(SamsungRC PROPERTIES
    QT_ANDROID_EXTRA_LIBS "${CMAKE_CURRENT_SOURCE_DIR}/ssl/android/${ANDROID_ABI}/libcrypto_3.so;${CMAKE_CURRENT_SOURCE_DIR}/ssl/android/${ANDROID_ABI}/libssl_3.so"
)

The values in QT_ANDROID_EXTRA_LIBS need to be separated by a semicolon.

Michel de Boer

Maybe this will work

target_link_libraries(SamsungRC
    PRIVATE ssl/android/arm64-v8a/libcrypto
    PRIVATE ssl/android/arm64-v8a/libssl
}

I use this myself to add openssl to my app:

if (ANDROID)
    FetchContent_Declare(
      android_openssl
      DOWNLOAD_EXTRACT_TIMESTAMP true
      URL      https://github.com/KDAB/android_openssl/archive/refs/heads/master.zip
#      URL_HASH MD5=c97d6ad774fab16be63b0ab40f78d945 #optional
    )
    FetchContent_MakeAvailable(android_openssl)
    include(${android_openssl_SOURCE_DIR}/android_openssl.cmake)
endif()

if (ANDROID)
    add_android_openssl_libraries(appskywalker)
endif()

Fausto01

I've found the solution! (Qt doc is wrong)

set_target_properties(SamsungRC PROPERTIES
    QT_ANDROID_EXTRA_LIBS "${CMAKE_CURRENT_SOURCE_DIR}/ssl/android/${ANDROID_ABI}/libcrypto_3.so;${CMAKE_CURRENT_SOURCE_DIR}/ssl/android/${ANDROID_ABI}/libssl_3.so"
)

The values in QT_ANDROID_EXTRA_LIBS need to be separated by a semicolon.