I've uncovered a pretty serious problem with libjpeg/SIMD whenever it is built with Xcode 3.x on OS X 10.5 or 10.6. It basically generates a corrupted JPEG stream. This problem occurs only with the SIMD extensions enabled, but it also occurs on older revisions of the library (prior to any modifications I made.) Curiously, if I build on an older system running 10.4 and Xcode 2.5 and bring the binary over to the 10.6 system, everything works fine. It's just the act of building on 10.6 with Xcode 3.2 or 10.5 using Xcode 3.1 that causes issues.
I've tried building the code both with and without PIC, using the 10.4, 10.5, and 10.6 compatibility SDK's, using NASM 0.98, 2.05.01, and 2.07. Curiously, with NASM 2.07, it doesn't build at all, giving me the following error: ld: in ./.libs/libjpeg.a(jcsammmx.o), malformed .o file, symbol const_base with address 0x1B4 is not with section 2 (__DATA,__const) address range of 0x1C0 to 0x1C0 I suspect the latter may be related to this NASM bug: http://www.nabble.com/--nasm-Bugs-2840300---Macho-alignment-broken-td25044061.html However, the more general problem is, I suspect, related to PIC generation. I'm not quite sure what may have changed about this in Xcode 3.x vs. 2.5, but whatever it was, it seems to have broken our build. Hoping someone might have any ideas about other things to try. ------------------------------------------------------------------------------ Come build with us! The BlackBerry® Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9-12, 2009. Register now! http://p.sf.net/sfu/devconf _______________________________________________ Tigervnc-devel mailing list Tigervnc-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/tigervnc-devel
