message: Build includes in parallel
diff: #!/usr/bin/env bash
  -set -ex
  +set -e
  include="$(realpath "$1")"
  -cbindgen="$(realpath cbindgen)"
  +cargo build --release --manifest-path cbindgen/Cargo.toml
  +cbindgen="$(realpath target/release/cbindgen)"
  +
  +jobs=()
  for config in src/header/*/cbindgen.toml
  do
  dir="$(dirname "$config")"
  @@ -13,8 +16,13 @@ do
  then
  header="$include/${name/_//}.h"
  pushd "$dir"
  - cargo run --release --manifest-path "$cbindgen/Cargo.toml" -- \
  - -c cbindgen.toml -o "$header" mod.rs
  + "$cbindgen" -c cbindgen.toml -o "$header" mod.rs &
  + jobs+=($!)
  popd
  fi
  done
  +
  +for job in "${jobs[@]}"
  +do
  + wait "$job"
  +done
  