BUG #2011: warning during link of plperl

The following bug has been logged online:

Bug reference: 2011
Logged by:
Email address: jmreymond(at)free(dot)fr
PostgreSQL version: 8.1RC1
Operating system: Linux ckrjmax 2.6.12-9-386
Description: warning during link of plperl
Details:

gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Winline
-Wdeclaration-after-statement -Wendif-labels -fno-strict-aliasing -fpic -I.
-I../../../src/include -D_GNU_SOURCE -I/usr/lib/perl/5.8/CORE -c -o
plperl.o plperl.c
gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Winline
-Wdeclaration-after-statement -Wendif-labels -fno-strict-aliasing -fpic -I.
-I../../../src/include -D_GNU_SOURCE -I/usr/lib/perl/5.8/CORE -c -o
spi_internal.o spi_internal.c
"/usr/bin/perl" /usr/share/perl/5.8/ExtUtils/xsubpp -typemap
/usr/share/perl/5.8/ExtUtils/typemap SPI.xs >SPI.c
gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Winline
-Wdeclaration-after-statement -Wendif-labels -fno-strict-aliasing -fpic -I.
-I../../../src/include -D_GNU_SOURCE -I/usr/lib/perl/5.8/CORE -c -o SPI.o
SPI.c
ar crs libplperl.a `lorder plperl.o spi_internal.o SPI.o | tsort`
tsort: -: input contains a loop:
tsort: SPI.o
tsort: plperl.o
tsort: -: input contains a loop:
tsort: SPI.o
tsort: plperl.o
tsort: -: input contains a loop:
tsort: SPI.o
tsort: plperl.o
tsort: -: input contains a loop:
tsort: SPI.o
tsort: plperl.o
ranlib libplperl.a