dyld: Symbol not found: _ffi_prep_closure_loc (on Mac)

user_2551290 0
Viewed 6694

I did a regular flutter run on my Mac, targeting my iPhone simulator today and got these errors.

Error output from CocoaPods:
↳
    dyld: lazy symbol binding failed: Symbol not found: _ffi_prep_closure_loc
      Referenced from: /Users/toure/.rbenv/versions/2.6.0/lib/ruby/gems/2.6.0/gems/ffi-1.13.1/lib/ffi_c.bundle
      Expected in: /usr/lib/libffi.dylib

    dyld: Symbol not found: _ffi_prep_closure_loc
      Referenced from: /Users/toure/.rbenv/versions/2.6.0/lib/ruby/gems/2.6.0/gems/ffi-1.13.1/lib/ffi_c.bundle
      Expected in: /usr/lib/libffi.dylib

How do you solve the dyld: Symbol not found: _ffi_prep_closure_loc error?

dyld cocoapods flutter
3 Answers

I found a fix buried in a github issue.

Running this on my Mac solved the problem.

gem uninstall ffi
brew reinstall libffi
export LDFLAGS="-L/usr/local/opt/libffi/lib"
export PKG_CONFIG_PATH="/usr/local/opt/libffi/lib/pkgconfig"
gem install ffi

I decided to share this since the error in the title of the issue is different from the one that I got. Hope this can save someone some time.

user_25512900

I was able to resolve this by reinstalling the utility with this flag:

gem install ffi -- --disable-system-libffi

Turns out ffi-1.13.1 is using ffi_prep_closure_loc() and system-libffi for Mac doesn’t have that function.

See ffi issue #791 for more.

user_2233270

Toure's solution, but for newer Homebrew installs:

gem uninstall ffi
brew reinstall libffi
export LDFLAGS="-L/opt/homebrew/opt/libffi/lib"
export PKG_CONFIG_PATH="/opt/homebrew/opt/libffi/lib/pkgconfig"
gem install ffi
user_1097070
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