I have a React Native project. I recently updated to macOS Big Sur 11.3 and XCode Version 12.5 (12E262).
When I build the project in XCode I get the following error:
../ios/Pods/Headers/Public/Flipper-Folly/folly/functional/Invoke.h:22:10: fatal error: 'boost/preprocessor/control/expr_iif.hpp' file not found
#include <boost/preprocessor/control/expr_iif.hpp>
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.
When I browse to Pods folder, expr_iif.hpp
file exists.
I tried removing Pods
folder, Podfile.lock
, .xcworkspace
. Deleted npm cache
. Then ran pod install
.
But no luck.
This build-time error is thrown by Flipper-RSocket and Flipper-Folly.
I can provide further details if requested.
I just had this issue and it happens when you have incompatible versions of Flipper pods.
This worked for me:
Podfile
to install Flipper like this:use_flipper!({ 'Flipper' => '0.93.0', 'Flipper-Folly' => '2.6.7', 'Flipper-DoubleConversion' => '3.1.7' })
Podfile
and Xcode
project o 12.1
or newer:platform :ios, '12.1'
Podfile.lock
pod install --repo-update
You may also try fixing permissions if the above is not enough for you:
chmod -R 755 ios/Pods/boost-for-react-native
The error went away after this.