Imported Upstream version 5.0.0.42

Former-commit-id: fd56571888259555122d8a0f58c68838229cea2b

external/corert/cross/build-rootfs.sh

@@ -0,0 +1,59 @@
+#!/usr/bin/env bash
+
+usage()
+{
+    echo "Usage: $0 [BuildArch]"
+    echo "BuildArch can be: arm, arm64"
+
+    exit 1
+}
+
+__CrossDir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
+__InitialDir=$PWD
+__BuildArch=arm
+__UbuntuArch=armhf
+__UbuntuRepo="http://ports.ubuntu.com/"
+__UbuntuPackages="build-essential lldb-3.6-dev libunwind8-dev gettext symlinks liblttng-ust-dev libicu-dev"
+__MachineTriple=arm-linux-gnueabihf
+__UnprocessedBuildArgs=
+for i in "$@"
+    do
+        lowerI="$(echo $i | awk '{print tolower($0)}')"
+        case $lowerI in
+        -?|-h|--help)
+        usage
+        exit 1
+        ;;
+        arm)
+        __BuildArch=arm
+        __UbuntuArch=armhf
+        __UbuntuRepo="http://ports.ubuntu.com/"
+        __UbuntuPackages="build-essential lldb-3.6-dev libunwind8-dev gettext symlinks liblttng-ust-dev libicu-dev"
+        __MachineTriple=arm-linux-gnueabihf
+        ;;
+        arm64)
+        __BuildArch=arm64
+        __UbuntuArch=arm64
+        __UbuntuRepo="http://ports.ubuntu.com/"
+        __UbuntuPackages="build-essential libunwind8-dev gettext symlinks liblttng-ust-dev libicu-dev"
+        __MachineTriple=aarch64-linux-gnu
+        ;;
+        *)
+        __UnprocessedBuildArgs="$__UnprocessedBuildArgs $i"
+    esac
+done
+
+__RootfsDir="$__CrossDir/rootfs/$__BuildArch"
+
+if [[ -n "$ROOTFS_DIR" ]]; then
+    __RootfsDir=$ROOTFS_DIR
+fi
+
+umount $__RootfsDir/*
+rm -rf $__RootfsDir
+qemu-debootstrap --arch $__UbuntuArch trusty $__RootfsDir $__UbuntuRepo
+cp $__CrossDir/$__BuildArch/sources.list $__RootfsDir/etc/apt/sources.list
+chroot $__RootfsDir apt-get update
+chroot $__RootfsDir apt-get -y install $__UbuntuPackages
+chroot $__RootfsDir symlinks -cr /usr
+umount $__RootfsDir/*