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macoscrystal-langkemal

Crystal build fails with "ld: library not found for -lssl"

I've just started a brand new Crystal app, added Kemal, and when building the "Hello World!" app from the Kemal documentation, I get:

$ crystal build --release src/orderprinterlinks.cr ld: library not found for -lssl clang: error: linker command failed with exit code 1 (use -v to see invocation)

On OSX 10.12.4

Any ideas why the library is not being found?

Solution

  • FIXED! Error was unrelated to Crystal / Kemal.. running the below command fixes the issue:

    xcode-select --install

    Seems the XCode CLI tools are removed silently when upgrading XCode versions, so this adds them back in, then everything works!