configure

#!/bin/sh
set -e

need_rustc="1.91.0"

if [ -d "$HOME/.cargo/bin" ]; then
  PATH="$PATH:$HOME/.cargo/bin"
  export PATH
fi

if ! command -v rustc >/dev/null 2>&1; then
  echo "ERROR: rustc >= ${need_rustc} is required to build Rsassy." >&2
  echo "Install Rust from your system package manager or https://rustup.rs/." >&2
  exit 1
fi

if ! command -v cargo >/dev/null 2>&1; then
  echo "ERROR: Cargo is required to build Rsassy." >&2
  echo "Install Cargo from your system package manager or https://rustup.rs/." >&2
  exit 1
fi

rustc_version=$(rustc --version | sed -n 's/^rustc \([0-9][^ ]*\).*/\1/p')
rustc_version=${rustc_version%%-*}
if [ -z "$rustc_version" ]; then
  echo "ERROR: could not determine rustc version from: $(rustc --version)" >&2
  exit 1
fi

"${R_HOME}/bin/Rscript" -e 'args <- commandArgs(TRUE); quit(status = if (utils::compareVersion(args[1], args[2]) < 0) 1L else 0L)' "$rustc_version" "$need_rustc" || {
  echo "ERROR: rustc >= ${need_rustc} is required; found ${rustc_version}." >&2
  exit 1
}

rsassy_pkg_libs=
case " $* " in
  *wasm32-unknown-emscripten*) rsassy_pkg_libs='-L$(LIBDIR) -lrsassy_rust' ;;
esac
cc_for_check=${CC:-cc}
if "$cc_for_check" --version 2>/dev/null | grep -qi emscripten; then
  rsassy_pkg_libs='-L$(LIBDIR) -lrsassy_rust'
fi
sed "s|@RSASSY_PKG_LIBS@|${rsassy_pkg_libs}|g" src/Makevars.in > src/Makevars

echo "using $(rustc --version)"
echo "using $(cargo --version)"