Re: Mac OS X .dylib not working

[Hans Aberg]

On 4 Feb 2010, at 14:49, Peter O'Gorman wrote:

> What does otool -L
> /Applications/LilyPond.app/Contents/Resources/bin/guile say? Which
> libltdl.7.dylib does it list?

See below. They differ: libltdl.7.dylib current versions 10.0.0 and  
10.1.0.

> If you run lilypond with DYLD_PRINT_LIBRARIES=1 set in the environment
> does more than one copy of libltdl.7.dylib get loaded?

It just tries to load the one in /usr/local/lib/, which causes  
segmentation fault.

> This sounds like a packaging bug to me though, ...

Part if it, at least. There is no point searching for incompatible  
libraries.

> ...you can probably fix it
> with use of install_name_tool(1).

I can pass it on - I'm not a LilyPond developer.

> As for your earlier questions about .so and .dylib - On Mac OS X 10.0
> and earlier, there was no way to load MH_DYLIB type files (usually
> .dylib extensions) at runtime. API was introduced to allow this in  
> 10.1,
> and dlopen() was added in 10.3, rewritten in 10.4 and dlclose()  
> actually
> removes the image in 10.5, prior to that only files of MH_BUNDLE type
> could be unloaded.
>
> When libtool support for Mac OS X was added, there was no way to load
> .dylib files, not much software had any knowledge of Mac OS X, and  
> quite
> a lot of things had hardcoded ".so" when loading files at runtime,  
> so to
> accomodate this, .so was chosen as the extension when creating  
> loadable
> modules (MH_BUNDLE) and .dylib when creating MH_DYLIB. Changing
> this now would cause far too many problems.

Not really: 10.4 and earlier are obsolete, and 10.5 is becoming. On  
10.5, just ordinary load is fine.

So just add .dylib to the list of searches.

> So, long story short, ltld looks for ".so" because that is the  
> extension
> used for loadable modules.

Well, that is not a part of the UNIX standard, and therefore not  
POSIX, which is nowadays a subset.

> Guile wants to use its loadable modules as
> input to ld, this is not portable to ancient Mac OS X, nor ancient Net
> BSD, and possibly other systems, however it seems unlikly to be a  
> major
> issue.
>
> I think that covers most of the thread, but I admit to now reading all
> of it.


If it can't load .dylib files, which now is the normal use, that is a  
bit confusing.

  Hans


----
# otool -L /Applications/LilyPond.app/Contents/Resources/bin/guile
/Applications/LilyPond.app/Contents/Resources/bin/guile:
	@executable_path/../lib//libguile.17.dylib (compatibility version  
21.0.0, current version 21.1.0)
	@executable_path/../lib//libintl.8.dylib (compatibility version  
9.0.0, current version 9.0.0)
	/usr/lib/libiconv.2.dylib (compatibility version 5.0.0, current  
version 5.0.0)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current  
version 71.1.3)
	@executable_path/../lib//libgmp.3.dylib (compatibility version 8.0.0,  
current version 8.1.0)
	@executable_path/../lib//libltdl.7.dylib (compatibility version  
10.0.0, current version 10.0.0)
	/usr/lib/libmx.A.dylib (compatibility version 1.0.0, current version  
47.1.0)

# otool -L /usr/local/bin/guile
/usr/local/bin/guile:
	/usr/local/lib/libguile.17.dylib (compatibility version 21.0.0,  
current version 21.1.0)
	/usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current  
version 7.0.0)
	/usr/local/lib/libintl.8.dylib (compatibility version 9.0.0, current  
version 9.2.0)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current  
version 111.1.4)
	/usr/local/lib/libgmp.3.dylib (compatibility version 9.0.0, current  
version 9.0.0)
	/usr/local/lib/libltdl.7.dylib (compatibility version 10.0.0, current  
version 10.1.0)
	/usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current  
version 1.0.0)
----
$ lilypond empty.ly
dyld: loaded: /Applications/LilyPond.app/Contents/Resources/bin/lilypond
dyld: loaded: /Applications/LilyPond.app/Contents/Resources/bin/../ 
lib//libintl.8.dylib
dyld: loaded: /usr/lib/libSystem.B.dylib
dyld: loaded: /Applications/LilyPond.app/Contents/Resources/bin/../ 
lib//libguile.17.dylib
dyld: loaded: /Applications/LilyPond.app/Contents/Resources/bin/../ 
lib//libgmp.3.dylib
dyld: loaded: /Applications/LilyPond.app/Contents/Resources/bin/../ 
lib//libpangoft2-1.0.0.dylib
dyld: loaded: /Applications/LilyPond.app/Contents/Resources/bin/../ 
lib//libpango-1.0.0.dylib
dyld: loaded: /Applications/LilyPond.app/Contents/Resources/bin/../ 
lib//libfreetype.6.dylib
dyld: loaded: /Applications/LilyPond.app/Contents/Resources/bin/../ 
lib//libfontconfig.1.dylib
dyld: loaded: /Applications/LilyPond.app/Contents/Resources/bin/../ 
lib//libgobject-2.0.0.dylib
dyld: loaded: /Applications/LilyPond.app/Contents/Resources/bin/../ 
lib//libgmodule-2.0.0.dylib
dyld: loaded: /Applications/LilyPond.app/Contents/Resources/bin/../ 
lib//libglib-2.0.0.dylib
dyld: loaded: /usr/lib/libstdc++.6.dylib
dyld: loaded: /usr/lib/libgcc_s.1.dylib
dyld: loaded: /usr/lib/libmx.A.dylib
dyld: loaded: /usr/lib/libiconv.2.dylib
dyld: loaded: /System/Library/Frameworks/CoreFoundation.framework/ 
Versions/A/CoreFoundation
dyld: loaded: /usr/lib/system/libmathCommon.A.dylib
dyld: loaded: /usr/lib/libicucore.A.dylib
dyld: loaded: /usr/lib/libobjc.A.dylib
dyld: loaded: /usr/lib/libauto.dylib
dyld: loaded: /Applications/LilyPond.app/Contents/Resources/bin/../ 
lib//libltdl.7.dylib
dyld: loaded: /usr/lib/libz.1.dylib
dyld: loaded: /Applications/LilyPond.app/Contents/Resources/bin/../ 
lib//libexpat.1.dylib
dyld: loaded: /System/Library/Frameworks/Carbon.framework/Versions/A/ 
Carbon
dyld: loaded: /System/Library/Frameworks/Carbon.framework/Versions/A/ 
Frameworks/CarbonSound.framework/Versions/A/CarbonSound
dyld: loaded: /System/Library/Frameworks/Carbon.framework/Versions/A/ 
Frameworks/CommonPanels.framework/Versions/A/CommonPanels
dyld: loaded: /System/Library/Frameworks/Carbon.framework/Versions/A/ 
Frameworks/Help.framework/Versions/A/Help
dyld: loaded: /System/Library/Frameworks/Carbon.framework/Versions/A/ 
Frameworks/HIToolbox.framework/Versions/A/HIToolbox
dyld: loaded: /System/Library/Frameworks/Carbon.framework/Versions/A/ 
Frameworks/HTMLRendering.framework/Versions/A/HTMLRendering
dyld: loaded: /System/Library/Frameworks/Carbon.framework/Versions/A/ 
Frameworks/ImageCapture.framework/Versions/A/ImageCapture
dyld: loaded: /System/Library/Frameworks/Carbon.framework/Versions/A/ 
Frameworks/Ink.framework/Versions/A/Ink
dyld: loaded: /System/Library/Frameworks/Carbon.framework/Versions/A/ 
Frameworks/NavigationServices.framework/Versions/A/NavigationServices
dyld: loaded: /System/Library/Frameworks/Carbon.framework/Versions/A/ 
Frameworks/OpenScripting.framework/Versions/A/OpenScripting
dyld: loaded: /System/Library/Frameworks/Carbon.framework/Versions/A/ 
Frameworks/Print.framework/Versions/A/Print
dyld: loaded: /System/Library/Frameworks/Carbon.framework/Versions/A/ 
Frameworks/SecurityHI.framework/Versions/A/SecurityHI
dyld: loaded: /System/Library/Frameworks/Carbon.framework/Versions/A/ 
Frameworks/SpeechRecognition.framework/Versions/A/SpeechRecognition
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/ApplicationServices
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/ 
Versions/A/CoreServices
dyld: loaded: /System/Library/Frameworks/CoreAudio.framework/Versions/ 
A/CoreAudio
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/ 
Versions/A/Frameworks/CarbonCore.framework/Versions/A/CarbonCore
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/ 
Versions/A/Frameworks/CFNetwork.framework/Versions/A/CFNetwork
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/ 
Versions/A/Frameworks/Metadata.framework/Versions/A/Metadata
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/ 
Versions/A/Frameworks/OSServices.framework/Versions/A/OSServices
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/ 
Versions/A/Frameworks/SearchKit.framework/Versions/A/SearchKit
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/ 
Versions/A/Frameworks/AE.framework/Versions/A/AE
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/ 
Versions/A/Frameworks/LaunchServices.framework/Versions/A/LaunchServices
dyld: loaded: /System/Library/Frameworks/CoreServices.framework/ 
Versions/A/Frameworks/DictionaryServices.framework/Versions/A/ 
DictionaryServices
dyld: loaded: /System/Library/Frameworks/IOKit.framework/Versions/A/ 
IOKit
dyld: loaded: /System/Library/Frameworks/DiskArbitration.framework/ 
Versions/A/DiskArbitration
dyld: loaded: /usr/lib/libbsm.dylib
dyld: loaded: /System/Library/Frameworks/Security.framework/Versions/A/ 
Security
dyld: loaded: /System/Library/Frameworks/SystemConfiguration.framework/ 
Versions/A/SystemConfiguration
dyld: loaded: /usr/lib/libsqlite3.0.dylib
dyld: loaded: /usr/lib/libresolv.9.dylib
dyld: loaded: /usr/lib/libxml2.2.dylib
dyld: loaded: /usr/lib/libxslt.1.dylib
dyld: loaded: /System/Library/Frameworks/Foundation.framework/Versions/ 
C/Foundation
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/Frameworks/ATS.framework/Versions/A/ATS
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/Frameworks/ColorSync.framework/Versions/A/ColorSync
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/Frameworks/CoreText.framework/Versions/A/CoreText
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/Frameworks/ImageIO.framework/Versions/A/ImageIO
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/Frameworks/LangAnalysis.framework/Versions/A/LangAnalysis
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/Frameworks/PrintCore.framework/Versions/A/PrintCore
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/Frameworks/QD.framework/Versions/A/QD
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/Frameworks/SpeechSynthesis.framework/Versions/A/ 
SpeechSynthesis
dyld: loaded: /usr/lib/libcrypto.0.9.7.dylib
dyld: loaded: /System/Library/Frameworks/Accelerate.framework/Versions/ 
A/Accelerate
dyld: loaded: /System/Library/Frameworks/Accelerate.framework/Versions/ 
A/Frameworks/vImage.framework/Versions/A/vImage
dyld: loaded: /System/Library/Frameworks/Accelerate.framework/Versions/ 
A/Frameworks/vecLib.framework/Versions/A/vecLib
dyld: loaded: /System/Library/Frameworks/Accelerate.framework/Versions/ 
A/Frameworks/vecLib.framework/Versions/A/libvMisc.dylib
dyld: loaded: /System/Library/Frameworks/Accelerate.framework/Versions/ 
A/Frameworks/vecLib.framework/Versions/A/libvDSP.dylib
dyld: loaded: /System/Library/Frameworks/Accelerate.framework/Versions/ 
A/Frameworks/vecLib.framework/Versions/A/libBLAS.dylib
dyld: loaded: /System/Library/Frameworks/Accelerate.framework/Versions/ 
A/Frameworks/vecLib.framework/Versions/A/libLAPACK.dylib
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/ 
libJPEG.dylib
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/ 
libTIFF.dylib
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/ 
libGIF.dylib
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/ 
libPng.dylib
dyld: loaded: /System/Library/Frameworks/ApplicationServices.framework/ 
Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/ 
libRadiance.dylib
dyld: loaded: /usr/lib/libcups.2.dylib
dyld: loaded: /System/Library/Frameworks/Kerberos.framework/Versions/A/ 
Kerberos
dyld: loaded: /System/Library/PrivateFrameworks/CoreUI.framework/ 
Versions/A/CoreUI
dyld: loaded: /System/Library/Frameworks/QuartzCore.framework/Versions/ 
A/QuartzCore
dyld: loaded: /System/Library/PrivateFrameworks/ 
DesktopServicesPriv.framework/Versions/A/DesktopServicesPriv
dyld: loaded: /System/Library/Frameworks/OpenGL.framework/Versions/A/ 
OpenGL
dyld: loaded: /System/Library/Frameworks/OpenGL.framework/Versions/A/ 
Libraries/libGLImage.dylib
dyld: loaded: /usr/lib/libffi.dylib
dyld: loaded: /System/Library/Frameworks/CoreVideo.framework/Versions/ 
A/CoreVideo
dyld: loaded: /System/Library/Frameworks/OpenGL.framework/Versions/A/ 
Libraries/libGLU.dylib
dyld: loaded: /System/Library/Frameworks/OpenGL.framework/Versions/A/ 
Libraries/libGL.dylib
dyld: loaded: /System/Library/Frameworks/OpenGL.framework/Versions/A/ 
Libraries/libGLProgrammability.dylib
dyld: loaded: /System/Library/PrivateFrameworks/ 
InstallServer.framework/Versions/A/InstallServer
GNU LilyPond 2.13.7
dyld: loaded: /usr/local/lib/libguile-srfi-srfi-1-v-3.3.dylib
dyld: loaded: /usr/local/lib/libguile.17.dylib
dyld: loaded: /usr/local/lib/libintl.8.dylib
dyld: loaded: /usr/local/lib/libgmp.3.dylib
dyld: loaded: /usr/local/lib/libltdl.7.dylib
Segmentation fault
----