81782f8efa
This introduces a script that has a high probability of failing if the Rust source code generated by the meta crate is not consistent accross build script runs. It also adds a new CI job to run it on each push, on a single platform.
42 lines
1.2 KiB
Bash
Executable File
42 lines
1.2 KiB
Bash
Executable File
#!/bin/bash
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# This script makes sure that the meta crate deterministically generate files
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# with a high probability.
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# The current directory must be set to the repository's root.
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set -e
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BUILD_SCRIPT=$(find -wholename "./target/debug/build/cranelift-codegen-*/build-script-build")
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# First, run the script to generate a reference comparison.
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rm -rf /tmp/reference
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mkdir /tmp/reference
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OUT_DIR=/tmp/reference TARGET=x86_64 $BUILD_SCRIPT
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# To make sure the build script doesn't depend on the current directory, we'll
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# change the current working directory on every iteration. Make this easy to
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# reproduce this locally by first copying the target/ directory into an initial
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# temporary directory (and not move and lose the local clone's content).
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rm -rf /tmp/src0
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mkdir /tmp/src0
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echo Copying target directory...
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cp -r ./target /tmp/src0/target
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cd /tmp/src0
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echo "Done, starting loop."
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# Then, repeatedly make sure that the output is the same.
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for i in {1..20}
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do
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# Move to a different directory, as explained above.
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rm -rf /tmp/src$i
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mkdir /tmp/src$i
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mv ./* /tmp/src$i
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cd /tmp/src$i
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rm -rf /tmp/try
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mkdir /tmp/try
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OUT_DIR=/tmp/try TARGET=x86_64 $BUILD_SCRIPT
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diff -qr /tmp/reference /tmp/try
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done
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