et_EE is a very fun locale. [a-z] does not expand to the full alphabet in that
crazy place. Force tr to use locale C just to avoid the problem.

diff -Nuar pciutils-3.0.2.orig/lib/configure pciutils-3.0.2/lib/configure
--- pciutils-3.0.2.orig/lib/configure	2008-09-19 11:04:37.000000000 -0700
+++ pciutils-3.0.2/lib/configure	2008-10-07 02:27:57.043215842 -0700
@@ -39,7 +39,7 @@
 	HOST=${3:-$cpu-$sys}
 fi
 # CAVEAT: tr on Solaris is a bit weird and the extra [] is otherwise harmless.
-host=`echo $HOST | sed 's/^\([^-]*\)-\([^-]*\)$/\1--\2/' | tr '[A-Z]' '[a-z]'`
+host=`echo $HOST | sed 's/^\([^-]*\)-\([^-]*\)$/\1--\2/' | LANG=C tr '[A-Z]' '[a-z]'`
 cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
 sys=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
 echo " $host $rel"
@@ -47,8 +47,8 @@
 c=config.h
 m=config.mk
 echo >$c '#define PCI_CONFIG_H'
-echo >>$c "#define PCI_ARCH_`echo $cpu | tr '[a-z]' '[A-Z]'`"
-echo >>$c "#define PCI_OS_`echo $sys | tr '[a-z]' '[A-Z]'`"
+echo >>$c "#define PCI_ARCH_`echo $cpu | LANG=C tr '[a-z]' '[A-Z]'`"
+echo >>$c "#define PCI_OS_`echo $sys | LANG=C tr '[a-z]' '[A-Z]'`"
 echo >$m 'WITH_LIBS='
 
 echo_n "Looking for access methods..."