opa - opa - 尝试制作白板时出错

Question

到目前为止，与 opa 相处得很好。我想尝试使用白板代码，但我很难让它在我的 ec2 实例上编译

我做了：

wget https://github.com/hhugo/OpaWhiteBoard/tarball/master
tar -xvzf master
cd hhugo-OpaWhiteBoard-004e4f1
make

然后我得到：

opa-plugin-builder -I +cairo src/opacairo/cairo.ml -o cairo
make[1]: Entering directory `/home/myhome/src/opa/whiteboard/hhugo-OpaWhiteBoard-004e4f1/cairo.opp'
/usr/lib/opa/ocaml/bin/ocamlopt.opt   -I /usr/lib/opa/static -I +cairo -c cairoMLRuntime.mli
/usr/lib/opa/ocaml/bin/ocamlopt.opt   -I /usr/lib/opa/static -I +cairo -c     cairoMLRuntime.ml
File "src/opacairo/cairo.ml", line 3, characters 22-41:
Error: Unbound module Cairo
make[1]: *** [cairoMLRuntime.cmx] Error 2
make[1]: Leaving directory `/home/myhome/src/opa/whiteboard/hhugo-OpaWhiteBoard-004e4f1/cairo.opp'
Error
building failure due to error(s) in source files

make: *** [cairo.opp] Error 1

通过谷歌搜索错误我没有找到太多