Linker error, doing something wrong?

[Dmitry Olshansky]

Trying to compile the following:

https://github.com/DmitryOlshansky/photon/blob/master/tests/curl_download.d

with:
ldc2 curl_download.d -L-lcurl

get:

   "__D6photon12__ModuleInfoZ", referenced from:
       __D13curl_download12__ModuleInfoZ in curl_download.o
   "__D6photon5macos4core2goFDFZvZv", referenced from:
       __D13curl_download4mainFZ13spawnDownloadMFAyaQdZv in 
curl_download.o
   "__D6photon5macos4core9startloopFZv", referenced from:
       __Dmain in curl_download.o
   "__D6photon9runFibersFZv", referenced from:
       __Dmain in curl_download.o
ld: symbol(s) not found for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to 
see invocation)
Error: /usr/bin/cc failed with status: 1

Am I missing something?

--
Dmitry Olshansky
https://olshansky.me