Good morning, On Monday 04 April 2011, Grahame Bowland wrote: > `__sync_bool_compare_and_swap_4' src.cxx:(.text+0x78): undefined reference > to `__sync_bool_compare_and_swap_4' collect2: ld returned 1 exit status > gmake[1]: *** [cmTryCompileExec] Error 1 > gmake: *** [cmTryCompileExec/fast] Error 2 > > It does seem the builtins are disabled. As Alberto said probably because > they're not available for the default 32-bit compiler target, Here's the > 'g++ -v' output: > > Using built-in specs. > Target: i686-pc-linux-gnu > Configured with: ./configure --prefix=/opt/gcc-4.4.3 > --with-mpfr=/opt/mpfr-2.3.2 --enable-languages=c,c++,objc Thread model: > posix > gcc version 4.4.3 (GCC)
There is a configure time switch in gcc that changes the default architecture. Distributions usually have their compiler configured for something that includes support for atomics. But your hand configured gcc uses the really conservative i386 (not i486, really 80386) default which did not have any smp support at this very old time. So either give -march=i686 or something sensible for your project to the c and c++ flags when doing the cmake configure step. Or rebuild gcc with the configure flag --with-cpu=i686 or something sensible for your build environment. Then rebuild osg from scratch. Greetings Mathias -- Dr. Mathias Fröhlich, science + computing ag, Software Solutions Hagellocher Weg 71-75, D-72070 Tuebingen, Germany Phone: +49 7071 9457-268, Fax: +49 7071 9457-511 -- Vorstand/Board of Management: Dr. Bernd Finkbeiner, Dr. Roland Niemeier, Dr. Arno Steitz, Dr. Ingrid Zech Vorsitzender des Aufsichtsrats/ Chairman of the Supervisory Board: Michel Lepert Sitz/Registered Office: Tuebingen Registergericht/Registration Court: Stuttgart Registernummer/Commercial Register No.: HRB 382196 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
