“库未加载：/usr/local/opt/openssl/lib/libssl.1.0.0.dylib”与 Xcode 8？

Question

My project requires OpenSSL libraries crypto and ssl . After updating Xcode to 8.2.1, compiling my project fails.

In my project Build Settings, in Linking , I have -lssl -lcrypto -lxml2 that indicates to load those libraries. Going back to my app Build Settings, I add /usr/local/opt/openssl/lib/ in the Library Search Paths to tell Xcode where to look.

Hurray, it compiles, builds and run properly. Cool.

BUT

When launching the app on a different mac, the app crashes, with this linking error:

Dyld Error Message:
  Library not loaded: /usr/local/opt/openssl/lib/libssl.1.0.0.dylib
  Referenced from: /Applications/MyApp.app/Contents/MacOS/MyApp
  Reason: image not found

That means the app is trying to load the open ssl libraries that might not be present on that mac. There might be just an older version, or that folder might not exist at all? So that's definitely a no-solution.

Here lies my issue , I have no idea how to solve this problem.

Removing -lssl -lcrypto from the linking doesn't help, as the has errors during linking.

I guess I need a way to tell Xcode to look there when compiling only . Would that be possible?

Answer 1

If you don't wish to ship libraries and deal with making sure the linker can find them, you can link your code against a static library.

Using the code in this question as a linking example, I compiled with this command:

cc -I/opt/homebrew/Cellar/openssl@1.1/1.1.1q/include -o Link14 Link14.cpp /opt/homebrew/Cellar/openssl@1.1/1.1.1q/lib/libcrypto.a -lc++

This uses system libraries for most things, but the static version of libcrypto in libcrypto.a for the encryption. You can add multiple by placing them on the compile/link line.