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diff --git a/rand/utils/ci/install.sh b/rand/utils/ci/install.sh
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+# From https://github.com/japaric/trust
+
+set -ex
+
+main() {
+ local target=
+ if [ $TRAVIS_OS_NAME = linux ]; then
+ target=x86_64-unknown-linux-musl
+ sort=sort
+ else
+ target=x86_64-apple-darwin
+ sort=gsort # for `sort --sort-version`, from brew's coreutils.
+ fi
+
+ # Builds for iOS are done on OSX, but require the specific target to be
+ # installed.
+ case $TARGET in
+ aarch64-apple-ios)
+ rustup target install aarch64-apple-ios
+ ;;
+ armv7-apple-ios)
+ rustup target install armv7-apple-ios
+ ;;
+ armv7s-apple-ios)
+ rustup target install armv7s-apple-ios
+ ;;
+ i386-apple-ios)
+ rustup target install i386-apple-ios
+ ;;
+ x86_64-apple-ios)
+ rustup target install x86_64-apple-ios
+ ;;
+ esac
+
+ # This fetches latest stable release
+ local tag=$(git ls-remote --tags --refs --exit-code https://github.com/japaric/cross \
+ | cut -d/ -f3 \
+ | grep -E '^v[0.1.0-9.]+$' \
+ | $sort --version-sort \
+ | tail -n1)
+ curl -LSfs https://japaric.github.io/trust/install.sh | \
+ sh -s -- \
+ --force \
+ --git japaric/cross \
+ --tag $tag \
+ --target $target
+}
+
+main