rust/miri

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#!/bin/bash
set -e
USAGE=$(cat <<"EOF"
COMMANDS
./miri install <flags>:
Installs the miri driver and cargo-miri. <flags> are passed to `cargo
install`. Sets up the rpath such that the installed binary should work in any
working directory. However, the rustup toolchain when invoking `cargo miri`
needs to be the same one used for `./miri install`.
./miri build <flags>:
Just build miri. <flags> are passed to `cargo build`.
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./miri check <flags>:
Just check miri. <flags> are passed to `cargo check`.
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./miri test <flags>:
Build miri, set up a sysroot and then run the test suite. <flags> are passed
to the final `cargo test` invocation.
./miri run <flags>:
Build miri, set up a sysroot and then run the driver with the given <flags>.
(Also respects MIRIFLAGS environment variable.)
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./miri fmt <flags>:
Format all sources and tests. <flags> are passed to `rustfmt`.
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./miri clippy <flags>:
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Runs clippy on all sources. <flags> are passed to `cargo clippy`.
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./miri many-seeds <command>:
Runs <command> over and over again with different seeds for Miri. The MIRIFLAGS
variable is set to its original value appended with ` -Zmiri-seed=$SEED` for
many different seeds.
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./miri bench <benches>:
Runs the benchmarks from bench-cargo-miri in hyperfine. hyperfine needs to be installed.
<benches> can explicitly list the benchmarks to run; by default, all of them are run.
ENVIRONMENT VARIABLES
MIRI_SYSROOT:
If already set, the "sysroot setup" step is skipped.
CARGO_EXTRA_FLAGS:
Pass extra flags to all cargo invocations.
EOF
)
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## We need to know where we are.
# macOS does not have a useful readlink/realpath so we have to use Python instead...
MIRIDIR=$(python3 -c 'import os, sys; print(os.path.dirname(os.path.realpath(sys.argv[1])))' "$0")
## Run the auto-things.
if [ -z "$AUTO_OPS" ]; then
export AUTO_OPS=42
# Run this first, so that the toolchain doesn't change after
# other code has run.
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if [ -f "$MIRIDIR/.auto-everything" ] || [ -f "$MIRIDIR/.auto-toolchain" ] ; then
"$MIRIDIR"/rustup-toolchain
fi
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if [ -f "$MIRIDIR/.auto-everything" ] || [ -f "$MIRIDIR/.auto-fmt" ] ; then
$0 fmt
fi
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if [ -f "$MIRIDIR/.auto-everything" ] || [ -f "$MIRIDIR/.auto-clippy" ] ; then
$0 clippy -- -D warnings
fi
fi
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## Determine command and toolchain.
COMMAND="$1"
[ $# -gt 0 ] && shift
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# Doing this *after* auto-toolchain logic above, since that might change the toolchain.
TOOLCHAIN=$(cd "$MIRIDIR"; rustup show active-toolchain | head -n 1 | cut -d ' ' -f 1)
## Handle some commands early, since they should *not* alter the environment.
case "$COMMAND" in
many-seeds)
for SEED in $({ echo obase=16; seq 0 255; } | bc); do
echo "Trying seed: $SEED"
MIRIFLAGS="$MIRIFLAGS -Zmiri-seed=$SEED" $@ || { echo "Failing seed: $SEED"; break; }
done
exit 0
;;
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bench)
# Make sure we have an up-to-date Miri installed
"$0" install
# Run the requested benchmarks
if [ -z "$@" ]; then
BENCHES=( $(ls "$MIRIDIR/bench-cargo-miri" ) )
else
BENCHES=("$@")
fi
for BENCH in "${BENCHES[@]}"; do
hyperfine -w 1 -m 5 --shell=none "cargo +$TOOLCHAIN miri run --manifest-path bench-cargo-miri/$BENCH/Cargo.toml"
done
exit 0
;;
esac
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## Prepare the environment
# Determine some toolchain properties
TARGET=$(rustc +$TOOLCHAIN --version --verbose | grep "^host:" | cut -d ' ' -f 2)
SYSROOT=$(rustc +$TOOLCHAIN --print sysroot)
LIBDIR=$SYSROOT/lib/rustlib/$TARGET/lib
if ! test -d "$LIBDIR"; then
echo "Something went wrong determining the library dir."
echo "I got $LIBDIR but that does not exist."
echo "Please report a bug at https://github.com/rust-lang/miri/issues."
exit 2
fi
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# Prepare flags for cargo and rustc.
CARGO="cargo +$TOOLCHAIN"
# Share target dir between `miri` and `cargo-miri`.
if [ -z "$CARGO_TARGET_DIR" ]; then
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export CARGO_TARGET_DIR="$MIRIDIR/target"
fi
# We configure dev builds to not be unusably slow.
if [ -z "$CARGO_PROFILE_DEV_OPT_LEVEL" ]; then
export CARGO_PROFILE_DEV_OPT_LEVEL=2
fi
# We set the rpath so that Miri finds the private rustc libraries it needs.
export RUSTFLAGS="-C link-args=-Wl,-rpath,$LIBDIR $RUSTFLAGS"
## Helper functions
# Build a sysroot and set MIRI_SYSROOT to use it. Arguments are passed to `cargo miri setup`.
build_sysroot() {
# Build once, for the user to see.
$CARGO run $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/cargo-miri/Cargo.toml -- miri setup "$@"
# Call again, to just set env var.
export MIRI_SYSROOT="$($CARGO run $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/cargo-miri/Cargo.toml -q -- miri setup --print-sysroot "$@")"
}
# Prepare and set MIRI_SYSROOT. Respects `MIRI_TEST_TARGET` and takes into account
# locally built vs. distributed rustc.
find_sysroot() {
if [ -n "$MIRI_SYSROOT" ]; then
# Sysroot already set, use that.
return 0
fi
# We need to build a sysroot.
if [ -n "$MIRI_TEST_TARGET" ]; then
build_sysroot --target "$MIRI_TEST_TARGET"
else
build_sysroot
fi
}
## Main
# Run command.
case "$COMMAND" in
install)
# "--locked" to respect the Cargo.lock file if it exists.
$CARGO install $CARGO_EXTRA_FLAGS --path "$MIRIDIR" --force --locked "$@"
$CARGO install $CARGO_EXTRA_FLAGS --path "$MIRIDIR"/cargo-miri --force --locked "$@"
;;
check)
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# Check, and let caller control flags.
$CARGO check $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/Cargo.toml --all-targets "$@"
$CARGO check $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/cargo-miri/Cargo.toml "$@"
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;;
build)
# Build, and let caller control flags.
$CARGO build $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/Cargo.toml "$@"
$CARGO build $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/cargo-miri/Cargo.toml "$@"
;;
test|bless)
# First build and get a sysroot.
$CARGO build $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/Cargo.toml
find_sysroot
if [ "$COMMAND" = "bless" ]; then
export MIRI_BLESS="Gesundheit"
fi
# Then test, and let caller control flags.
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# Only in root project and ui_test as `cargo-miri` has no tests.
$CARGO test $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/Cargo.toml "$@"
$CARGO test $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/ui_test/Cargo.toml "$@"
;;
run)
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# Scan for "--target" to overwrite the "MIRI_TEST_TARGET" env var so
# that we set the MIRI_SYSROOT up the right way.
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FOUND_TARGET_OPT=0
for ARG in "$@"; do
if [ "$LAST_ARG" = "--target" ]; then
# Found it!
export MIRI_TEST_TARGET="$ARG"
FOUND_TARGET_OPT=1
break
fi
LAST_ARG="$ARG"
done
if [ "$FOUND_TARGET_OPT" = "0" ] && [ -n "$MIRI_TEST_TARGET" ]; then
# Make sure Miri actually uses this target.
MIRIFLAGS="$MIRIFLAGS --target $MIRI_TEST_TARGET"
fi
# First build and get a sysroot.
$CARGO build $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/Cargo.toml
find_sysroot
# Then run the actual command.
exec $CARGO run $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/Cargo.toml -- --sysroot "$MIRI_SYSROOT" $MIRIFLAGS "$@"
;;
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fmt)
find "$MIRIDIR" -not \( -name target -prune \) -name '*.rs' \
| xargs rustfmt +$TOOLCHAIN --edition=2021 --config-path "$MIRIDIR/rustfmt.toml" "$@"
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;;
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clippy)
$CARGO clippy $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/Cargo.toml --all-targets "$@"
$CARGO clippy $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/ui_test/Cargo.toml --all-targets "$@"
$CARGO clippy $CARGO_EXTRA_FLAGS --manifest-path "$MIRIDIR"/cargo-miri/Cargo.toml "$@"
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;;
*)
if [ -n "$COMMAND" ]; then
echo "Unknown command: $COMMAND"
echo
fi
echo "$USAGE"
exit 1
esac