trouble building on Mac Os X

[Christophe]

I am trying to build global 4.3.1 on Mac Os X
I have done as described in the INSTALL file:
./configure
make

I obtain some warnings at link :

/usr/bin/ld: warning unused multiple definitions of symbol _optarg
../libglibc/libgloglibc.a(getopt.o) definition of _optarg in section 
(__DATA,__data)
/usr/lib/libSystem.dylib(getopt.o) unused definition of _optarg
/usr/bin/ld: warning unused multiple definitions of symbol _optind
../libglibc/libgloglibc.a(getopt.o) definition of _optind in section 
(__DATA,__data)
/usr/lib/libSystem.dylib(getopt.o) unused definition of _optind
/usr/bin/ld: warning unused multiple definitions of symbol _regcomp
../libglibc/libgloglibc.a(regex.o) definition of _regcomp in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(regcomp.o) unused definition of _regcomp
/usr/bin/ld: warning unused multiple definitions of symbol _regexec
../libglibc/libgloglibc.a(regex.o) definition of _regexec in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(regexec.o) unused definition of _regexec
/usr/bin/ld: warning unused multiple definitions of symbol _dbopen
../libdb/libglodb.a(db.o) definition of _dbopen in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(db.o) unused definition of _dbopen
/usr/bin/ld: warning unused multiple definitions of symbol ___dbpanic
../libdb/libglodb.a(db.o) definition of ___dbpanic in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(db.o) unused definition of ___dbpanic
/usr/bin/ld: warning unused multiple definitions of symbol ___bt_open
../libdb/libglodb.a(bt_open.o) definition of ___bt_open in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(bt_open.o) unused definition of ___bt_open
/usr/bin/ld: warning unused multiple definitions of symbol ___bt_fd
../libdb/libglodb.a(bt_open.o) definition of ___bt_fd in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(bt_open.o) unused definition of ___bt_fd
/usr/bin/ld: warning unused multiple definitions of symbol ___bt_close
../libdb/libglodb.a(bt_close.o) definition of ___bt_close in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(bt_close.o) unused definition of ___bt_close
/usr/bin/ld: warning unused multiple definitions of symbol ___bt_defcmp
../libdb/libglodb.a(bt_utils.o) definition of ___bt_defcmp in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(bt_utils.o) unused definition of ___bt_defcmp
/usr/bin/ld: warning unused multiple definitions of symbol ___bt_defpfx
../libdb/libglodb.a(bt_utils.o) definition of ___bt_defpfx in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(bt_utils.o) unused definition of ___bt_defpfx
/usr/bin/ld: warning unused multiple definitions of symbol ___bt_delete
../libdb/libglodb.a(bt_delete.o) definition of ___bt_delete in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(bt_delete.o) unused definition of ___bt_delete
/usr/bin/ld: warning unused multiple definitions of symbol ___bt_get
../libdb/libglodb.a(bt_get.o) definition of ___bt_get in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(bt_get.o) unused definition of ___bt_get
/usr/bin/ld: warning unused multiple definitions of symbol ___bt_pgin
../libdb/libglodb.a(bt_conv.o) definition of ___bt_pgin in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(bt_conv.o) unused definition of ___bt_pgin
/usr/bin/ld: warning unused multiple definitions of symbol ___bt_pgout
../libdb/libglodb.a(bt_conv.o) definition of ___bt_pgout in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(bt_conv.o) unused definition of ___bt_pgout
/usr/bin/ld: warning unused multiple definitions of symbol ___bt_put
../libdb/libglodb.a(bt_put.o) definition of ___bt_put in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(bt_put.o) unused definition of ___bt_put
/usr/bin/ld: warning unused multiple definitions of symbol ___bt_seq
../libdb/libglodb.a(bt_seq.o) definition of ___bt_seq in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(bt_seq.o) unused definition of ___bt_seq
/usr/bin/ld: warning unused multiple definitions of symbol ___bt_sync
../libdb/libglodb.a(bt_close.o) definition of ___bt_sync in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(bt_close.o) unused definition of ___bt_sync
/usr/bin/ld: warning unused multiple definitions of symbol _mpool_filter
../libdb/libglodb.a(mpool.o) definition of _mpool_filter in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(mpool.o) unused definition of _mpool_filter
/usr/bin/ld: warning unused multiple definitions of symbol _mpool_get
../libdb/libglodb.a(mpool.o) definition of _mpool_get in section 
(__TEXT,__text)
/usr/lib/libSystem.dylib(mpool.o) unused definition of _mpool_get

Shall I care about those warnings or not? If so how can I get rid of 
them?
Thanks for your help.