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print usage information on invalid command

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Ralf Jung 2019-05-29 09:36:59 +02:00
parent bf9f26401f
commit 35b4d9fd8a
1 changed files with 37 additions and 31 deletions
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68
miri
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@ -1,37 +1,38 @@
#!/bin/sh
## Usage
#
# 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.
#
# ./miri build <flags>:
# Just build miri. <flags> are passed to `cargo build`.
#
# ./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>.
#
# All commands also exist in a "-debug" variant (e.g. "./miri run-debug
# <flags>") which uses debug builds instead of release builds, for faster build
# times and slower execution times.
#
# ENVIRONMENT VARIABLES
#
# MIRI_SYSROOT:
# If already set, the "sysroot setup" step is skipped.
#
# CARGO_EXTRA_FLAGS:
# Pass extra flags to all cargo invocations.
set -e
USAGE=$(cat <<"EOF"
COMMANDS
./miri install <flags>:
Installs the miri driver and cargo-miri. <flags> are passed to `cargo
install`. Sets up the rpath such that the installed binary should work in any
working directory.
./miri build <flags>:
Just build miri. <flags> are passed to `cargo build`.
./miri test <flags>:
Build miri, set up a sysroot and then run the test suite. <flags> are passed
to the final `cargo test` invocation.
./miri run <flags>:
Build miri, set up a sysroot and then run the driver with the given <flags>.
All commands also exist in a "-debug" variant (e.g. "./miri run-debug
<flags>") which uses debug builds instead of release builds, for faster build
times and slower execution times.
ENVIRONMENT VARIABLES
MIRI_SYSROOT:
If already set, the "sysroot setup" step is skipped.
CARGO_EXTRA_FLAGS:
Pass extra flags to all cargo invocations.
EOF
)
## Preparation
set -e
# I'd love to use `jq` for parsing the JSON properly, but macOS is totally underequipped for this kind of work.
TARGET=$(rustc --print target-spec-json -Z unstable-options | grep llvm-target | cut -d '"' -f 4)
SYSROOT=$(rustc --print sysroot)
@ -135,4 +136,9 @@ run|run-debug)
# Then run the actual command.
exec cargo run $CARGO_BUILD_FLAGS "$@"
;;
*)
echo "Unknown command: $COMMAND"
echo
echo "$USAGE"
exit 1
esac