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From: Igor Korot <ikorot01@gmail.com>
Date: Thu, 7 May 2026 23:36:19 -0700
Message-ID: <CA+FnnTwW+=MgpA+w_VUQCb=nPqHihGz51pc6TkYh_QX7ext7Ew@mail.gmail.com>
Subject: Problem linking with Release library
To: "pgsql-generallists.postgresql.org" <pgsql-general@lists.postgresql.org>
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Archived-At: <https://www.postgresql.org/message-id/CA%2BFnnTwW%2B%3DMgpA%2Bw_VUQCb%3DnPqHihGz51pc6TkYh_QX7ext7Ew%40mail.gmail.com>
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Hi,
A long time ago I built both Debug and Release versions of libpq.

For a while I was working with the Debug version without any issues

Now I tried to build a Release version of my program.

Compilation went fine but during linking I got

[code]
1>libpq.lib(snprintf.obj) : warning LNK4217: locally defined symbol
_sprintf imported in function _fmtptr
1>libpq.lib(dirmod.obj) : error LNK2001: unresolved external symbol
__imp____iob_func
1>libpq.lib(win32error.obj) : error LNK2001: unresolved external
symbol __imp____iob_func
1>libpq.lib(fe-connect.obj) : error LNK2001: unresolved external
symbol __imp____iob_func
1>libpq.lib(snprintf.obj) : error LNK2001: unresolved external symbol
__imp____iob_func
1>libpq.lib(encnames.obj) : error LNK2001: unresolved external symbol
__imp____iob_func
1>libpq.lib(chklocale.obj) : error LNK2001: unresolved external symbol
__imp____iob_func
1>libpq.lib(fe-exec.obj) : error LNK2019: unresolved external symbol
__imp__sscanf referenced in function _pqSaveParameterStatus
1>    33 Warning(s)
1>    8 Error(s)
1>
[/code]

Do I need to rebuild a Release version with some missing parameters?

I'm working with MSVC 2017 for now...

Thank you.