Add multi-optimize script

multi-optimize.sh

@@ -0,0 +1,38 @@
+#!/bin/bash
+set -o errexit -o nounset -o pipefail
+command -v shellcheck > /dev/null && shellcheck "$0"
+
+export PATH=$PATH:/root/.cargo/bin
+
+# This is designed for the case where the repo contrains multiple contracts,
+# all in one workspace. (eg. `cosmwasm-plus`). We want to compile them all and
+# optimize all the files (multiple ones). We dump them in a top level dir
+# called `artifacts` with each contract named properly (`cw20_base.wasm`)
+#
+# To compile them all, use: `./multi-optimize.sh ./contracts/*`
+
+# build all the contracts
+for contractdir in "$@"; do
+  (
+    echo "$contractdir"
+    cd "$contractdir"
+    # Linker flag "-s" for stripping (https://github.com/rust-lang/cargo/issues/3483#issuecomment-431209957)
+    # Note that shortcuts from .cargo/config are not available in source code packages from crates.io
+    RUSTFLAGS='-C link-arg=-s' cargo build --release --target wasm32-unknown-unknown --locked
+  )
+done
+
+mkdir -p artifacts
+
+# take all the build artifacts and optimize them
+for wasm in target/wasm32-unknown-unknown/release/*.wasm; do
+  name=$(basename "$wasm")
+  wasm-opt -Os "$wasm" -o "artifacts/$name"
+done
+
+(
+  cd artifacts
+  sha256sum -- *.wasm > hash.txt
+)
+
+echo "done"