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#!/bin/bash
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# A script to build the release artifacts of Wasmtime into the `target`
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# directory. For now this is the CLI and the C API. Note that this script only
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# produces the artifacts through Cargo and doesn't package things up. That's
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# intended for the `build-tarballs.sh` script.
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#
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# This script takes a Rust target as its first input and optionally a parameter
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# afterwards which can be "-min" to indicate that a minimal build should be
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# produced with as many features as possible stripped out.
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set -ex
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build=$1
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target=$2
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# Default build flags for release artifacts. Leave debugging for
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# builds-from-source which have richer information anyway, and additionally the
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# CLI won't benefit from catching unwinds and neither will the C API so use
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# panic=abort in both situations.
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export CARGO_PROFILE_RELEASE_STRIP=debuginfo
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export CARGO_PROFILE_RELEASE_PANIC=abort
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if [[ "$build" = *-min ]]; then
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# Configure a whole bunch of compile-time options which help reduce the size
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# of the binary artifact produced.
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export CARGO_PROFILE_RELEASE_OPT_LEVEL=s
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export RUSTFLAGS="-Zlocation-detail=none $RUSTFLAGS"
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export CARGO_PROFILE_RELEASE_CODEGEN_UNITS=1
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export CARGO_PROFILE_RELEASE_LTO=true
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build_std=-Zbuild-std=std,panic_abort
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build_std_features=-Zbuild-std-features=std_detect_dlsym_getauxval
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flags="$build_std $build_std_features --no-default-features --features disable-logging"
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cmake_flags="-DWASMTIME_DISABLE_ALL_FEATURES=ON"
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cmake_flags="$cmake_flags -DWASMTIME_FEATURE_DISABLE_LOGGING=ON"
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cmake_flags="$cmake_flags -DWASMTIME_USER_CARGO_BUILD_OPTIONS:LIST=$build_std;$build_std_features"
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else
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# For release builds the CLI is built a bit more feature-ful than the Cargo
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# defaults to provide artifacts that can do as much as possible.
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bin_flags="--features all-arch,component-model"
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fi
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cargo build --release $flags --target $target -p wasmtime-cli $bin_flags --features run
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mkdir -p target/c-api-build
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cd target/c-api-build
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cmake \
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../../crates/c-api \
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$cmake_flags \
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-DCMAKE_BUILD_TYPE=Release \
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-DWASMTIME_TARGET=$target \
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-DCMAKE_INSTALL_PREFIX=../c-api-install \
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-DCMAKE_INSTALL_LIBDIR=../c-api-install/lib
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cmake --build . --target install
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