Cross compilation issues with FFMPEG with Android about rules_android_ndk HOT 4 CLOSED

flags:
    # Android
    # Mostly, native code is compiled after the android_binary rule has run a transition to compile for that platform.
    # We just detect the transition, which sets "Android configuration distinguisher", and then translate the CPU it set.
    --Android configuration distinguisher=android
    --cpu=arm64-v8a
        //Bazel/Platforms:_android-arm64
    --Android configuration distinguisher=android
    --cpu=armeabi-v7a
        //Bazel/Platforms:_android-armv7
    --Android configuration distinguisher=android
    --cpu=x86_64
        //Bazel/Platforms:_android-x86_64
    --Android configuration distinguisher=android
    --cpu=x86
        //Bazel/Platforms:_android-x86_32

# Grind through the full cartesian product of OS<>CPU, so we have the combinations available for easy use.
# config_setting()s allows easy use in select(). (Annoyingly, platforms can't be used in select(). See https://github.com/bazelbuild/bazel/issues/15575)
# List comprehension works around the lack of for loops at the top level in Starlark.
# Floated making these an official part of platforms here: https://github.com/bazelbuild/platforms/issues/36
[(
    config_setting(
        name = os + "-" + arch,
        visibility = ["//visibility:public"],
        constraint_values = [
            "@platforms//os:" + os,
            "@platforms//cpu:" + arch,
        ]
    ),
    platform( # Please don't use these outside of //platform_mappings. See that file for more details on the implementation that configures the built-in platform flags.
        name = "_" + os + "-" + arch,
        constraint_values = [
            "@platforms//os:" + os,
            "@platforms//cpu:" + arch,
        ]
    )
)
for os in ["android", "ios", "macos"] for arch in ["arm64", "armv7", "x86_64", "x86_32"]]
# ^ If you're getting errors around aarch64 not matching arm64, despite aarch64 being a deprecated alias for arm64, some dependency has dragged in an ancient version of platforms. See https://github.com/bazelbuild/bazel/issues/14605