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Re: dylib versions and symlinks redux

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Re: dylib versions and symlinks redux

Subject: Re: dylib versions and symlinks redux
From: Chris Espinosa <email@hidden>
Date: Fri, 15 Feb 2008 17:00:39 -0800


On Feb 15, 2008, at 4:50 PM, Dave Camp wrote:

I'm using Xcode 3 on 10.5.2 and I've got an app that I need to link with libcurl. My SDK is set to 10.5 (I use some 10.5 features if they are present) and my deployment target is set to 10.4.

I'm hitting the problem where the linker picks up the dylib the symlink points to instead of using whatever the most recent is at runtime. Reading the list it looked like the correct solution was to remove libcurl.dylib from my project and instead add -lcurl to the linker flags, however, that doesn't seem to work. My code still won't load on 10.4 and otool -L on 10.4 shows the binary wanting / usr/lib/libcurl.4.dylib instead of /usr/lib/libcurl.dylib

The build log shows the following for the link stage: Ld /Users/dave/dev/svn/foo/trunk/PreferencePane/../build/Debug/ foo.prefPane/Contents/MacOS/foo normal i386 mkdir /Users/dave/dev/svn/foo/trunk/PreferencePane/../build/Debug/ foo.prefPane/Contents/MacOS cd /Users/dave/dev/svn/foo/trunk/PreferencePane /Developer/usr/bin/gcc-4.0 -o /Users/dave/dev/svn/foo/trunk/ PreferencePane/../build/Debug/foo.prefPane/Contents/MacOS/foo -L/ Users/dave/dev/svn/foo/trunk/PreferencePane/../build/Debug -F/Users/ dave/dev/svn/foo/trunk/PreferencePane/../build/Debug -filelist / Users/dave/dev/svn/foo/trunk/PreferencePane/../build/ PreferencePane.build/Debug/PreferencePane.build/Objects-normal/i386/ foo.LinkFileList -framework Cocoa -framework PreferencePanes - framework Security -framework SecurityInterface -framework WebKit - lz -arch i386 -bundle -mmacosx-version-min=10.4 -lcurl -isysroot / Developer/SDKs/MacOSX10.5.sdk

What am I doing wrong?

Removing curl from your Link Libraries and Frameworks build phase and replacing it with -lcurl was a no-op; it does exactly the same thing. I think what you want is -l/usr/lib/libcurl.3.dylib to explicitly link to the earlier version of curl.

Chris
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  >dylib versions and symlinks redux (From: Dave Camp <email@hidden>)




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