BUG #2546: PostgreSQL does not have native spinlock support on this platform

The following bug has been logged online:

Bug reference: 2546
Logged by: John Weekley
Email address: weekleyj(at)foobarlabs(dot)net
PostgreSQL version: 8.1.4
Operating system: Solaris unknown 5.11 snv_43 i86pc i386 i86pc
Description: PostgreSQL does not have native spinlock support on this
platform
Details:

Platform is 64 bit Solaris x86.
unknown:/export/home/weekleyj/postgresql-8.1.4:>psrinfo -vp
The physical processor has 1 virtual processor (0)
x86 (AuthenticAMD family 15 model 28 step 0 clock 2000 MHz)
Mobile AMD Athlon 64 Processor 3000+

Relevant build output:

gmake[5]: Entering directory
`/export/home/weekleyj/postgresql-8.1.4/src/backend/access/transam'
/opt/SUNWspro/bin/cc -Xa -xO4 -xarch=amd64 -I../../../../src/include
-I/opt/X64/include -c -o xlog.o xlog.c
"../../../../src/include/storage/s_lock.h", line 814: #error: PostgreSQL
does not have native spinlock support on this platform. To continue the
compilation, rerun configure using --disable-spinlocks. However,
performance will be poor. Please report this to pgsql-bugs(at)postgresql(dot)org(dot)