Linker errors while building Objective-C++ porject with Xcode 9

Originator:matej
Number:rdar://32664169 Date Originated:08-Jun-2017 06:28 PM
Status:Closed Resolved:
Product:Developer Tools Product Version:Xcode Version 9.0 beta (9M136h)
Classification:Serious Bug Reproducible:Always
 
Summary:
Building a project that uses C++ with Xcode 9, results in “ld: symbol(s) not found for architecture armv7” errors. This issue only occurs during release builds. We observed the issue in our framework (PSPDFKit) and could also reproduce it in an isolated sample project. 

Steps to Reproduce:
Open the provided C++Test project. Use the Xcode Archive action to build a release build of the application. 

Expected Results:
The application should build without any linked errors. 

Actual Results:
The following linker error occurs:

Undefined symbols for architecture armv7:
  "operator new(unsigned long, std::align_val_t)", referenced from:
      triggerStuff() in Test.o
ld: symbol(s) not found for architecture armv7
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Version:
Xcode Version 9.0 beta (9M136h)

Notes:
Limiting the application to arm64 works around the issue, but is obviously not a viable workaround:

<key>UIRequiredDeviceCapabilities</key>
  	<array>
		<string>arm64</string>

Comments

Fixed

This is fixed in Xcode 9.3 beta. The feature is marked as unavailable for iOS versions prior to iOS 11 and compilation now succeeds for iOS 11+ deployment targets.

By matej at Feb. 1, 2018, 1:39 p.m. (reply...)

Sample project

https://cloudup.com/ik2-nM3VGR8

By matej at June 9, 2017, 1:32 a.m. (reply...)

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