Bug 42464 - mmp does not handle native fat libraries with non 32/64 bit sections
Summary: mmp does not handle native fat libraries with non 32/64 bit sections
Status: RESOLVED ANSWERED
Alias: None
Product: Xamarin.Mac
Classification: Desktop
Component: mmp ()
Version: Master
Hardware: PC Mac OS
: Low normal
Target Milestone: master
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2016-07-11 13:36 UTC by Chris Hamons
Modified: 2018-02-13 20:15 UTC (History)
3 users (show)

Tags:
Is this bug a regression?: ---
Last known good build:

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Status:
RESOLVED ANSWERED

Description Chris Hamons 2016-07-11 13:36:18 UTC
From https://forums.xamarin.com/discussion/70855/build-fails-with-dylib-file-in-release-mode#latest

libTurboActivate.dylib: Mach-O universal binary with 3 architectures
libTurboActivate.dylib (for architecture ppc7400): Mach-O dynamically linked shared library ppc
libTurboActivate.dylib (for architecture x86_64): Mach-O 64-bit dynamically linked shared library x86_64
libTurboActivate.dylib (for architecture i386): Mach-O dynamically linked shared library i386

crashed inside:

at Xamarin.MachOFile.Read (System.IO.BinaryReader reader) <0x10e9c7830 + 0x0029b> in :0 

Workaround:
lipo -remove ppc7400 libTurboActivate.dylib modified/libTurboActivate.dylib
Comment 1 Chris Hamons 2016-07-11 13:54:12 UTC
@Rolf - I think this was code you added. If not, or you think this is XM only behavior, feel free to bounce back.
Comment 2 Sebastien Pouliot 2018-02-13 20:15:17 UTC
This should be fixed as part of https://github.com/xamarin/xamarin-macios/issues/3367
i.e. remove any slice that is not the target arch