Warnings in CVS build (Linux)

Some warnings in current CVS build in Linux (SuSE 7.2):

pgc.c: In function `yylex':
pgc.c:1243: warning: label `find_rule' defined but not used
pgc.l: At top level:
pgc.c:3090: warning: `yy_flex_realloc' defined but not used
odbcapi.c:140: warning: no previous prototype for `SQLDataSources'
pl_scan.c: In function `plpgsql_base_yylex':
pl_scan.c:1003: warning: label `find_rule' defined but not used
scan.l: At top level:
pl_scan.c:2294: warning: `yy_flex_realloc' defined but not used
In file included from plperl.c:82:
/usr/lib/perl5/5.6.1/i586-linux/CORE/perl.h:2155: warning: `DEBUG' redefined
../../../src/include/utils/elog.h:22: warning: this is the location of the
previous definition
In file included from SPI.xs:41:
/usr/lib/perl5/5.6.1/i586-linux/CORE/perl.h:2155: warning: `DEBUG' redefined
../../../src/include/utils/elog.h:22: warning: this is the location of the
previous definition

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