Attempt further work on android (pardon the many commits i cannot com…

…pile locally)

feraltweaks-bootstrap/scripts/build-crosscompile-android-arm64/coreclr.sh

@@ -13,6 +13,8 @@ cd build/work
 # Properties
 monorepo="https://github.com/dotnet/runtime"
 monobranch="release/8.0"
+ndkver="r26d"
+apilevel=26
 
 # Download .NET runtime
 echo Cloning .NET runtime...
@@ -25,8 +27,54 @@ cd runtime/repo
 
 # Prepare
 echo Preparing crosscompile...
-echo "$(cat eng/common/cross/build-android-rootfs.sh | sed "s/__NDK_Version=.*/__NDK_Version=r26d/g" | sed "s/-linux-x86_64.zip/-linux.zip/g")" > eng/common/cross/build-android-rootfs.sh
-bash eng/common/cross/build-android-rootfs.sh arm64 24 || exit 1
+
+echo "Setting up toolchains and rootfs..."
+mkdir -p "./.tools/android-rootfs/android-ndk-$ndkver"
+mkdir -p "./.tools/android-rootfs/lldb"
+CROSS_DIR="$(realpath ./.tools/android-rootfs)"
+NDK_DIR="$(realpath ./.tools/android-rootfs/android-ndk-$ndkver)"
+LLDB_DIR="$(realpath ./.tools/android-rootfs/lldb)"
+
+echo "Downloading Android NDK $ndkver..."
+curl -L "https://dl.google.com/android/repository/android-ndk-$ndkver-linux.zip" --output "$NDK_DIR.zip" -f || exit 1
+echo "Extracting Android NDK..."
+LAST="$PWD"
+cd "$NDK_DIR"
+unzip "$NDK_DIR.zip" || exit 1
+cd "$LAST"
+
+echo "Downloading Android LLDB..."
+curl -L "https://dl.google.com/android/repository/lldb-2.3.3614996-linux-x86_64.zip" --output "$LLDB_DIR.zip" -f || exit 1
+echo "Extracting Android LLDB..."
+LAST="$PWD"
+cd "$LLDB_DIR"
+unzip "$LLDB_DIR.zip" || exit 1
+cd "$LAST"
+
+TOOLCHAIN_DIR="$(realpath ./.tools/android-rootfs/android-ndk-$ndkver/toolchains/llvm/prebuilt/linux-x86_64)"
+
+# Taken from eng/common/cross/build-android-rootfs.sh
+echo "Downloading dependencies..."
+TMP=$CROSS_DIR/tmp/arm64/
+mkdir -p "$TMP"
+__AndroidPackages="libicu"
+__AndroidPackages+=" libandroid-glob"
+__AndroidPackages+=" liblzma"
+__AndroidPackages+=" krb5"
+__AndroidPackages+=" openssl"
+for path in $(wget -qO- https://packages.termux.dev/termux-main-21/dists/stable/main/binary-$__AndroidArch/Packages |\
+    grep -A15 "Package: \(${__AndroidPackages// /\\|}\)" | grep -v "static\|tool" | grep Filename); do
+
+    if [[ "$path" != "Filename:" ]]; then
+        echo "Working on: $path"
+        wget -qO- https://packages.termux.dev/termux-main-21/$path | dpkg -x - "$TMP"
+    fi
+done
+cp -R "$TMP/data/data/com.termux/files/usr/"* "$TOOLCHAIN_DIR/sysroot/usr/"
+echo "Generating platform file..."
+echo "RID=android.$apilevel-arm64" > "$TOOLCHAIN_DIR/sysroot/android_platform"
+# End ported code
+
 echo Switching branch...
 git checkout "$monobranch" || exit 1
 git pull