Re: libcrypto, universal build
Re: libcrypto, universal build
- Subject: Re: libcrypto, universal build
- From: Jean-Daniel Dupas <email@hidden>
- Date: Tue, 18 Mar 2008 01:01:47 +0100
Le 18 mars 08 à 00:39, Dave Hersey a écrit : Hi,
I have a problem with some code that works fine everywhere except on 10.5 Intel. The build machine is a PowerPC running Xcode 3, and I'm linking against libcrypto.for MD5 stuff. This is the libcrypto at /usr/lib/libcrypto.0.9.dylib.
I'm guessing that this library was only made Intel native in 10.5, because if I run this app on 10.4 Intel, there are no problems, but on 10.5 Intel it gives me:
dyld: Library not loaded: /usr/lib/libcrypto.0.9.dylib
Referenced from: <my_executable_path>
Reason: no suitable image found. Did find:
/usr/lib/libcrypto.0.9.dylib: mach-o, but wrong architecture
/usr/lib/libcrypto.0.9.dylib: mach-o, but wrong architecture
Exited abnormally: Trace/BPT trap
So, it's cool that this library is now native on Intel, but I'm not sure how to build universally for it. I've looked at the docs on ADC, but the relevant ones seem mainly concerned about porting open source projects and such, so I'm not sure if I need to approach things like that using "lipo" or if there's an easier way. My project is a standard Cocoa application, building for 32-bit ppc and i386.
If I need to use lipo, do I need to bring the library over from the Intel machine and then make a universal dylib from it and the one on the PowerPC machine?
I'm sure the solution is simple, but I haven't run into this issue before so I could use some pointers.
Thanks
Just a workaround. If this is only for MD5 functions, you can uses the OS X Security implementation. OS X provide an simple interface for digest in /usr/include/CommonCrypto/CommonDigest.h:
extern int CC_MD5_Init(CC_MD5_CTX *c); extern int CC_MD5_Update(CC_MD5_CTX *c, const void *data, CC_LONG len); extern int CC_MD5_Final(unsigned char *md, CC_MD5_CTX *c);
And this does not require any additional library as those function are built-in the libSystem.
Now, I can answer to your question. libcrypto.9.dylib is PPC only but libcrypto.9.7.dylib is universal. the libcrypto.dylib symlink points on the good library in both 10.4 and 10.5 SDK, so use libcrypto.dylib or libcrypto.9.7.dylib instead of libcrypto.9.dylib.
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