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#!/bin/sh
# Print the directory holding the NDK's clang and LLVM binutils.
#
# android-cc needs one of those binaries and an APK build needs others —
# llvm-objcopy, for the boot image blob — so the lookup is here rather than
# duplicated at each caller. ANDROID_NDK_HOME wins if it is set; otherwise the
# pin in android-ndk.dotslash beside this script answers, downloading once.
set -e
dir=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)

ndk=${ANDROID_NDK_HOME:-${ANDROID_NDK_ROOT:-}}
if [ -n "$ndk" ]; then
    for host in linux-x86_64 darwin-x86_64; do
        if [ -d "$ndk/toolchains/llvm/prebuilt/$host/bin" ]; then
            echo "$ndk/toolchains/llvm/prebuilt/$host/bin"
            exit 0
        fi
    done
    echo "scripts/android-ndk-bin: no llvm prebuilt under $ndk" >&2
    exit 1
fi

dirname -- "$(dotslash -- fetch "$dir/android-ndk.dotslash")"