Re: Error with compile source code on CentOS5.7

"go.dbms" <go(dot)dbms(at)gmail(dot)com> writes:
> gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wformat-security -fno-strict-aliasing -fwrapv pg_dump.o common.o pg_dump_sort.o keywords.o kwlookup.o pg_backup_archiver.o pg_backup_db.o pg_backup_custom.o pg_backup_files.o pg_backup_null.o pg_backup_tar.o pg_backup_directory.o dumputils.o compress_io.o -L../../../src/port -lpgport -L../../../src/interfaces/libpq -lpq -L../../../src/port -Wl,-rpath,'/usr/local/pgsql913/lib',--enable-new-dtags -lpgport -lz -lreadline -ltermcap -lcrypt -ldl -lm -o pg_dump
> compress_io.o: In function `cfgetc':
> compress_io.c:(.text+0xf5): undefined reference to `gzgetc_'

Hm, where'd that underscore come from? What PG is calling is gzgetc().

I suspect what you've got here is a mismatch between include files and
the actual zlib library. Check if you've got more than one version of
zlib installed.

regards, tom lane