fix: libwasmtime.so not available under centos arm (#129)

Co-authored-by: soulbird <zhaothree@gmail.com>

install-wasmtime.sh

@@ -32,8 +32,14 @@ if [ -d wasmtime-c-api ]; then
     rm -rf wasmtime-c-api
 fi
 mv wasmtime-${VER}-${ARCH}-${os}-c-api wasmtime-c-api
-if echo "int main(void) {}" | gcc -o /dev/null -v -x c - &> /dev/stdout| grep collect | tr -s " " "\012" | grep musl; then
-    # build from source code if the libc is musl
+if { echo "int main(void) {}" | gcc -o /dev/null -v -x c - &> /dev/stdout| grep collect | tr -s " " "\012" | grep musl; } \
+    || ( [[ -f /etc/redhat-release ]] && [[ "$arch" = "aarch64" ]] ); then
+    # build from source code if the libc is musl or under centos aarch64
+    if ! command -v cargo > /dev/null; then
+        curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+        source "$HOME/.cargo/env"
+    fi
+
     git clone https://github.com/bytecodealliance/wasmtime -b ${VER} --depth 1 \
         && cd wasmtime \
         && git submodule update --init \