BUG #6585: Can't compile from source code

The following bug has been logged on the website:

Bug reference: 6585
Logged by: Andrey Mitroshin
Email address: mit(at)akamit(dot)com
PostgreSQL version: 9.1.3
Operating system: AIX 7.1.0
Description:

This affects versions from 9.0.0
Version 8.4.7 is not affected
gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/opt/freeware/libexec/gcc/powerpc-ibm-aix7.1.0.0/4.6.3/lto-wrapper
Target: powerpc-ibm-aix7.1.0.0
Configured with: ../gcc-4.6.3/configure --with-as=/usr/bin/as
--with-ld=/usr/bin/ld --enable-languages=c,c++,fortran
--prefix=/opt/freeware --mandir=/opt/freeware/man
--infodir=/opt/freeware/info --enable-threads
--enable-version-specific-runtime-libs --disable-nls
--enable-decimal-float=dpd --host=powerpc-ibm-aix7.1.0.0
Thread model: aix
gcc version 4.6.3 (GCC)

While compiling from source the following error stops the compilation
process

gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith
-Wdeclaration-after-statement -Wendif-labels -Wformat-security
-fno-strict-aliasing -fwrapv -L../../src/port
-Wl,-blibpath:'/opt/pgsql/lib:/usr/lib:/lib' access/common/heaptuple.o
access/common/indextuple.o access/common/printtup.o
access/common/reloptions.o access/common/scankey.o
access/common/tupconvert.o access/common/tupdesc.o access/gist/gist.o
access/gist/gistutil.o access/gist/gistxlog.o access/gist/gistvacuum.o
access/gist/gistget.o access/gist/gistscan.o access/gist/gistproc.o
access/gist/gistsplit.o access/hash/hash.o access/hash/hashfunc.o
access/hash/hashinsert.o access/hash/hashovfl.o access/hash/hashpage.o
access/hash/hashscan.o access/hash/hashsearch.o access/hash/hashsort.o
access/hash/hashutil.o access/heap/heapam.o access/heap/hio.o
access/heap/pruneheap.o access/heap/rewriteheap.o access/heap/syncscan.o
access/heap/tuptoaster.o access/heap/visibilitymap.o access/index/genam.o
access/index/indexam.o access/nbtree/nbtcompare.o access/nbtree/nbtinsert.o
access/nbtree/nbtpage.o access/nbtree/nbtree.o access/nbtree/nbtsearch.o
access/nbtree/nbtutils.o access/nbtree/nbtsort.o access/nbtree/nbtxlog.o
access/transam/clog.o access/transam/transam.o access/transam/varsup.o
access/transam/xact.o access/transam/xlog.o access/transam/xlogutils.o
access/transam/rmgr.o access/transam/slru.o access/transam/subtrans.o
access/transam/multixact.o access/transam/twophase.o
access/transam/twophase_rmgr.o access/gin/ginutil.o access/gin/gininsert.o
access/gin/ginxlog.o access/gin/ginentrypage.o access/gin/gindatapage.o
access/gin/ginbtree.o access/gin/ginscan.o access/gin/ginget.o
access/gin/ginvacuum.o access/gin/ginarrayproc.o access/gin/ginbulk.o
access/gin/ginfast.o bootstrap/bootparse.o bootstrap/bootstrap.o
catalog/catalog.o catalog/dependency.o catalog/heap.o catalog/index.o
catalog/indexing.o catalog/namespace.o catalog/aclchk.o
catalog/objectaddress.o catalog/pg_aggregate.o catalog/pg_collation.o
catalog/pg_constraint.o catalog/pg_conversion.o catalog/pg_depend.o
catalog/pg_enum.o catalog/pg_inherits.o catalog/pg_largeobject.o
catalog/pg_namespace.o catalog/pg_operator.o catalog/pg_proc.o
catalog/pg_db_role_setting.o catalog/pg_shdepend.o catalog/pg_type.o
catalog/storage.o catalog/toasting.o parser/analyze.o parser/gram.o
parser/keywords.o parser/kwlookup.o parser/parser.o parser/parse_agg.o
parser/parse_clause.o parser/parse_coerce.o parser/parse_collate.o
parser/parse_cte.o parser/parse_expr.o parser/parse_func.o
parser/parse_node.o parser/parse_oper.o parser/parse_param.o
parser/parse_relation.o parser/parse_target.o parser/parse_type.o
parser/parse_utilcmd.o parser/scansup.o commands/aggregatecmds.o
commands/alter.o commands/analyze.o commands/async.o commands/cluster.o
commands/comment.o commands/collationcmds.o commands/constraint.o
commands/conversioncmds.o commands/copy.o commands/dbcommands.o
commands/define.o commands/discard.o commands/explain.o commands/extension.o
commands/foreigncmds.o commands/functioncmds.o commands/indexcmds.o
commands/lockcmds.o commands/operatorcmds.o commands/opclasscmds.o
commands/portalcmds.o commands/prepare.o commands/proclang.o
commands/schemacmds.o commands/seclabel.o commands/sequence.o
commands/tablecmds.o commands/tablespace.o commands/trigger.o
commands/tsearchcmds.o commands/typecmds.o commands/user.o commands/vacuum.o
commands/vacuumlazy.o commands/variable.o commands/view.o executor/execAmi.o
executor/execCurrent.o executor/execGrouping.o executor/execJunk.o
executor/execMain.o executor/execProcnode.o executor/execQual.o
executor/execScan.o executor/execTuples.o executor/execUtils.o
executor/functions.o executor/instrument.o executor/nodeAppend.o
executor/nodeAgg.o executor/nodeBitmapAnd.o executor/nodeBitmapOr.o
executor/nodeBitmapHeapscan.o executor/nodeBitmapIndexscan.o
executor/nodeHash.o executor/nodeHashjoin.o executor/nodeIndexscan.o
executor/nodeLimit.o executor/nodeLockRows.o executor/nodeMaterial.o
executor/nodeMergeAppend.o executor/nodeMergejoin.o
executor/nodeModifyTable.o executor/nodeNestloop.o
executor/nodeFunctionscan.o executor/nodeRecursiveunion.o
executor/nodeResult.o executor/nodeSeqscan.o executor/nodeSetOp.o
executor/nodeSort.o executor/nodeUnique.o executor/nodeValuesscan.o
executor/nodeCtescan.o executor/nodeWorktablescan.o executor/nodeGroup.o
executor/nodeSubplan.o executor/nodeSubqueryscan.o executor/nodeTidscan.o
executor/nodeForeignscan.o executor/nodeWindowAgg.o
executor/tstoreReceiver.o executor/spi.o foreign/foreign.o lib/dllist.o
lib/stringinfo.o libpq/be-fsstubs.o libpq/be-secure.o libpq/auth.o
libpq/crypt.o libpq/hba.o libpq/ip.o libpq/md5.o libpq/pqcomm.o
libpq/pqformat.o libpq/pqsignal.o main/main.o nodes/nodeFuncs.o
nodes/nodes.o nodes/list.o nodes/bitmapset.o nodes/tidbitmap.o
nodes/copyfuncs.o nodes/equalfuncs.o nodes/makefuncs.o nodes/outfuncs.o
nodes/readfuncs.o nodes/print.o nodes/read.o nodes/params.o nodes/value.o
optimizer/geqo/geqo_copy.o optimizer/geqo/geqo_eval.o
optimizer/geqo/geqo_main.o optimizer/geqo/geqo_misc.o
optimizer/geqo/geqo_mutation.o optimizer/geqo/geqo_pool.o
optimizer/geqo/geqo_random.o optimizer/geqo/geqo_recombination.o
optimizer/geqo/geqo_selection.o optimizer/geqo/geqo_erx.o
optimizer/geqo/geqo_pmx.o optimizer/geqo/geqo_cx.o optimizer/geqo/geqo_px.o
optimizer/geqo/geqo_ox1.o optimizer/geqo/geqo_ox2.o
optimizer/path/allpaths.o optimizer/path/clausesel.o
optimizer/path/costsize.o optimizer/path/equivclass.o
optimizer/path/indxpath.o optimizer/path/joinpath.o
optimizer/path/joinrels.o optimizer/path/orindxpath.o
optimizer/path/pathkeys.o optimizer/path/tidpath.o
optimizer/plan/analyzejoins.o optimizer/plan/createplan.o
optimizer/plan/initsplan.o optimizer/plan/planagg.o
optimizer/plan/planmain.o optimizer/plan/planner.o optimizer/plan/setrefs.o
optimizer/plan/subselect.o optimizer/prep/prepjointree.o
optimizer/prep/prepqual.o optimizer/prep/preptlist.o
optimizer/prep/prepunion.o optimizer/util/clauses.o
optimizer/util/joininfo.o optimizer/util/pathnode.o
optimizer/util/placeholder.o optimizer/util/plancat.o
optimizer/util/predtest.o optimizer/util/relnode.o
optimizer/util/restrictinfo.o optimizer/util/tlist.o optimizer/util/var.o
port/dynloader.o port/pg_sema.o port/pg_shmem.o port/pg_latch.o
postmaster/autovacuum.o postmaster/bgwriter.o postmaster/fork_process.o
postmaster/pgarch.o postmaster/pgstat.o postmaster/postmaster.o
postmaster/syslogger.o postmaster/walwriter.o regex/regcomp.o
regex/regerror.o regex/regexec.o regex/regfree.o replication/walsender.o
replication/walreceiverfuncs.o replication/walreceiver.o
replication/basebackup.o replication/repl_gram.o replication/syncrep.o
rewrite/rewriteRemove.o rewrite/rewriteDefine.o rewrite/rewriteHandler.o
rewrite/rewriteManip.o rewrite/rewriteSupport.o storage/buffer/buf_table.o
storage/buffer/buf_init.o storage/buffer/bufmgr.o storage/buffer/freelist.o
storage/buffer/localbuf.o storage/file/fd.o storage/file/buffile.o
storage/file/copydir.o storage/file/reinit.o storage/freespace/freespace.o
storage/freespace/fsmpage.o storage/freespace/indexfsm.o storage/ipc/ipc.o
storage/ipc/ipci.o storage/ipc/pmsignal.o storage/ipc/procarray.o
storage/ipc/procsignal.o storage/ipc/shmem.o storage/ipc/shmqueue.o
storage/ipc/sinval.o storage/ipc/sinvaladt.o storage/ipc/standby.o
storage/large_object/inv_api.o storage/lmgr/lmgr.o storage/lmgr/lock.o
storage/lmgr/proc.o storage/lmgr/deadlock.o storage/lmgr/lwlock.o
storage/lmgr/spin.o storage/lmgr/s_lock.o storage/lmgr/predicate.o
storage/page/bufpage.o storage/page/itemptr.o storage/smgr/md.o
storage/smgr/smgr.o storage/smgr/smgrtype.o tcop/dest.o tcop/fastpath.o
tcop/postgres.o tcop/pquery.o tcop/utility.o tsearch/ts_locale.o
tsearch/ts_parse.o tsearch/wparser.o tsearch/wparser_def.o tsearch/dict.o
tsearch/dict_simple.o tsearch/dict_synonym.o tsearch/dict_thesaurus.o
tsearch/dict_ispell.o tsearch/regis.o tsearch/spell.o tsearch/to_tsany.o
tsearch/ts_selfuncs.o tsearch/ts_typanalyze.o tsearch/ts_utils.o
utils/adt/acl.o utils/adt/arrayfuncs.o utils/adt/array_userfuncs.o
utils/adt/arrayutils.o utils/adt/bool.o utils/adt/cash.o utils/adt/char.o
utils/adt/date.o utils/adt/datetime.o utils/adt/datum.o utils/adt/domains.o
utils/adt/enum.o utils/adt/float.o utils/adt/format_type.o
utils/adt/geo_ops.o utils/adt/geo_selfuncs.o utils/adt/int.o
utils/adt/int8.o utils/adt/like.o utils/adt/lockfuncs.o utils/adt/misc.o
utils/adt/nabstime.o utils/adt/name.o utils/adt/numeric.o
utils/adt/numutils.o utils/adt/oid.o utils/adt/oracle_compat.o
utils/adt/pseudotypes.o utils/adt/rowtypes.o utils/adt/regexp.o
utils/adt/regproc.o utils/adt/ruleutils.o utils/adt/selfuncs.o
utils/adt/tid.o utils/adt/timestamp.o utils/adt/varbit.o utils/adt/varchar.o
utils/adt/varlena.o utils/adt/version.o utils/adt/xid.o utils/adt/network.o
utils/adt/mac.o utils/adt/inet_cidr_ntop.o utils/adt/inet_net_pton.o
utils/adt/ri_triggers.o utils/adt/pg_lzcompress.o utils/adt/pg_locale.o
utils/adt/formatting.o utils/adt/ascii.o utils/adt/quote.o
utils/adt/pgstatfuncs.o utils/adt/encode.o utils/adt/dbsize.o
utils/adt/genfile.o utils/adt/trigfuncs.o utils/adt/tsginidx.o
utils/adt/tsgistidx.o utils/adt/tsquery.o utils/adt/tsquery_cleanup.o
utils/adt/tsquery_gist.o utils/adt/tsquery_op.o utils/adt/tsquery_rewrite.o
utils/adt/tsquery_util.o utils/adt/tsrank.o utils/adt/tsvector.o
utils/adt/tsvector_op.o utils/adt/tsvector_parser.o utils/adt/txid.o
utils/adt/uuid.o utils/adt/windowfuncs.o utils/adt/xml.o
utils/cache/attoptcache.o utils/cache/catcache.o utils/cache/inval.o
utils/cache/plancache.o utils/cache/relcache.o utils/cache/relmapper.o
utils/cache/spccache.o utils/cache/syscache.o utils/cache/lsyscache.o
utils/cache/typcache.o utils/cache/ts_cache.o utils/error/assert.o
utils/error/elog.o utils/fmgr/dfmgr.o utils/fmgr/fmgr.o utils/fmgr/funcapi.o
utils/hash/dynahash.o utils/hash/hashfn.o utils/hash/pg_crc.o
utils/init/globals.o utils/init/miscinit.o utils/init/postinit.o
utils/mb/encnames.o utils/mb/conv.o utils/mb/mbutils.o utils/mb/wchar.o
utils/mb/wstrcmp.o utils/mb/wstrncmp.o utils/misc/guc.o
utils/misc/help_config.o utils/misc/pg_rusage.o utils/misc/ps_status.o
utils/misc/superuser.o utils/misc/tzparser.o utils/misc/rbtree.o
utils/mmgr/aset.o utils/mmgr/mcxt.o utils/mmgr/portalmem.o
utils/resowner/resowner.o utils/sort/logtape.o utils/sort/tuplesort.o
utils/sort/tuplestore.o utils/time/combocid.o utils/time/tqual.o
utils/time/snapmgr.o utils/fmgrtab.o ../../src/timezone/localtime.o
../../src/timezone/strftime.o ../../src/timezone/pgtz.o
../../src/port/libpgport_srv.a -Wl,-bE:../../src/backend/postgres.imp -lld
-lm -o postgres
ld: 0711-317 ERROR: Undefined symbol: .mbstowcs_l
ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more
information.
collect2: ld returned 8 exit status
gmake[2]: *** [postgres] Error 1
gmake[2]: Leaving directory `/data/pkgs/postgresql-9.1.0/src/backend'
gmake[1]: *** [all-backend-recurse] Error 2
gmake[1]: Leaving directory `/data/pkgs/postgresql-9.1.0/src'
gmake: *** [all-src-recurse] Error 2