[iOS] Build errors in a React Native app

[aknad]

🐛 Bug Report

I've a lot of these types of build errors if I integrate Flipper in my RN app:

• Could not build module 'Darwin'
• Redefinition of module 'fmt'
• Could not build module 'CoreFoundation'

I also found an issue in the React Native GitHub, but I think is somehow related to Flipper because if I comment the integration in the Podfile, the errors disappear

To Reproduce

• add flipper integration in Podfile :flipper_configuration => ENV['NO_FLIPPER'] == "1" ? FlipperConfiguration.disabled : FlipperConfiguration.enabled
• launch 'pod install'
• Run the app in XCode

Environment

RN - 0.71.7 Flipper - 0.125.0

[RTGit]

Similar to me, RN - 0.71.7, Flipper - any version. Without a flipper works fine.

[namhihi237]

The same issue

[KaappoRaivio]

I'm having the same problem

[namhihi237]

I resolved this by downgrade Xcode from 14.3 to 14.2, Hope can help.

[kabhamo]

@namhihi237 can you tell us what is the version of RN and flipper you are using?

[bretep]

Same issue

[bretep]

ios/Pods/Headers/Private/Flipper-Folly/folly/portability/GFlags.h:66:7: error: redefinition of 'FlagSaver'
class FlagSaver {};
      ^
In file included from ios/Pods/Flipper-Folly/folly/io/async/TimeoutManager.cpp:20:
In file included from  ios/Pods/Headers/Public/Flipper-Glog/glog/logging.h:86:
/opt/homebrew/include/gflags/gflags.h:278:23: note: previous definition is here
class GFLAGS_DLL_DECL FlagSaver {
                      ^

[bretep]

When trying to uninstall...

[bretep]

When unsetting the CPATH, which includes the libraries in homebrew, Flipper-Glog now complains.

So this confirms the previous error that Flipper-Folly uses a static library whereas Flipper-Glog is using a shared library.

CPATH=/opt/homebrew/include

unset CPATH

ios/Pods/Headers/Public/Flipper-Glog/glog/logging.h:86:10: fatal error: 'gflags/gflags.h' file not found
#include <gflags/gflags.h>

[bretep]

After trying many things, I decided to comment out this line, and the build succeeded.

[dimitris4]

same issue

[chrisariesgonzales]

same issue(2)

[shanilka-psl]

same issue(3) I thought use_framework! was the reason for this. It's not. Disabling the flipper was the only option.

[huuanhopp]

same isssue in xcode 15 and react native 0.72.5

[jtdaugh]

Same issue

[MKruk1]

Same issue

[massimilianochiodi]

SAME ISSUE!

[PaoloSalta]

Same issue with xCode 15.0.1 and RN 0.72.7

[riamon-v]

Any news on this ?

[Jashanpreet1998]

same issue xcode 15.0.0 and RN 0.73.1

• Flipper (0.201.0):
• Flipper-Folly (~> 2.6)

working fine when comment this line flipper_configuration => flipper_config

[kekloon97]

Any update for it?

[EkremBulut01]

same issue xcode 15.0.0 and RN 0.73.1

• Flipper (0.201.0):
• Flipper-Folly (~> 2.6)

working fine when comment this line flipper_configuration => flipper_config

Can you share your pod file ?

[Nicat26]

1) comment this line :flipper_configuration => flipper_config, 2) cd ios 3) pod install --repo-update

[PaoloSalta]

Same issue with XCode 15.4 and RN 0.73.6

[tanyisi]

same issue xcode 15.0.0 and RN 0.73.1

• Flipper (0.201.0):
• Flipper-Folly (~> 2.6)

working fine when comment this line flipper_configuration => flipper_config

Can you share your pod file ?

@Jashanpreet1998 may i know what is your xcode version?