From ff88392d8cdf08361686257c681a7bed4c0e0a7a Mon Sep 17 00:00:00 2001
From: Frank Denis <github@pureftpd.org>
Date: Tue, 23 Apr 2019 01:23:41 +0200
Subject: [PATCH] Make the WASI backend configurable

---
 test/default/wasi-test-wrapper.sh | 26 +++++++++++++++++---------
 1 file changed, 17 insertions(+), 9 deletions(-)

diff --git a/test/default/wasi-test-wrapper.sh b/test/default/wasi-test-wrapper.sh
index 30b4950c..a98eed0a 100755
--- a/test/default/wasi-test-wrapper.sh
+++ b/test/default/wasi-test-wrapper.sh
@@ -1,14 +1,22 @@
 #! /bin/sh
 
-if command -v wasmtime >/dev/null; then
-  wasmtime -o --dir=. "$1" && exit 0
+if [ -z "$WASI_RUNTIME" ] || [ "$WASI_RUNTIME" = "wasmtime" ]; then
+  if command -v wasmtime >/dev/null; then
+    wasmtime -o --dir=. "$1" && exit 0
+  fi
 fi
-if command -v wasmer >/dev/null; then
-  wasmer run "$1" --dir=. && exit 0
+if [ -z "$WASI_RUNTIME" ] || [ "$WASI_RUNTIME" = "wasmer" ]; then
+  if command -v wasmer >/dev/null; then
+    wasmer run "$1" --backend "${WASMER_BACKEND:-cranelift}" --dir=. && exit 0
+  fi
 fi
-if command -v lucetc-wasi >/dev/null && command -v lucet-wasi >/dev/null; then
-  lucetc-wasi \
-    --min-reserved-size "128MiB" \
-    -o "${1}.so" --opt-level best "$1" &&
-    lucet-wasi --dir=.:. "$1.so" && exit 0
+if [ -z "$WASI_RUNTIME" ] || [ "$WASI_RUNTIME" = "lucet" ]; then
+  if command -v lucetc-wasi >/dev/null && command -v lucet-wasi >/dev/null; then
+    lucetc-wasi \
+      --min-reserved-size "128MiB" \
+      -o "${1}.so" --opt-level best "$1" &&
+      lucet-wasi --dir=.:. "$1.so" && exit 0
+  fi
 fi
+echo "WebAssembly runtime failed" >&2
+exit 1