__sync_bool_compare_and_swap is compiler builtin intrinsic only present in gcc 
versions>= 4.1.
I'd guess you have gcc 4.0 on the system.

You might want to try Linux i386 (Fedora 12)

Kevin

On 09/02/2011 07:40 AM, Stephen Bloch wrote:
On Sep 2, 2011, at 9:18 AM, Matthias Felleisen wrote:

Does 5.1.3 not work?

Within 5.1.3, there are several pre-built binaries:
Linux i386 (Fedora 12)
Linux i386 (Ubuntu jaunty)
Linux x86_64 (Debian lenny)
Linux x86_64 (Debian squeeze)
Linux x86_64 (Fedora 14)
I don't know which (if any) of those should work on my system.

So I tried "Unix source", did the usual "mkdir build; cd build; ../configure; 
make" and got

...
make ../racket3m
make[4]: Entering directory `.../src/build/racket/gc2'
cd ..; gcc -o racket3m  gc2/main.o libracket3m.a  -pthread -ldl -lm  -ldl -lm 
-rdynamic
libracket3m.a(symbol.o)(.text+0x65e): In function `make_a_symbol':
../../../racket/gc2/../src/mzrt.h:132: undefined reference to 
`__sync_bool_compare_and_swap'
collect2: ld returned 1 exit status
make[4]: *** [../racket3m] Error 1


Stephen Bloch
sbl...@adelphi.edu


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