X-Recipient: archive-cygwin AT delorie DOT com DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 138B33848427 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cygwin.com; s=default; t=1630685999; bh=aW8kf8EvBH1kcEBrhHGR4Jk1OCNaKJnHOWsc2pAy/j0=; h=Date:Subject:To:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:From; b=u/PGJlc74o6NwEcQU2+scVrkI+Qy5b9LOjvo7p3HJ0i/orGXNAjU1hFVS9dkgsg0r LT/x0tbnF3L1JuQaa2P4ssZUaYcMk8qNQ+MXxLfgbQS6kHqYUU1RjzncI6D6+cU7ik aguS3lFtehndj6D0XICdfm8RaZR0SaFY1dTe0784= X-Original-To: cygwin AT cygwin DOT com Delivered-To: cygwin AT cygwin DOT com DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 88CA33848415 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=45x9JjMy9Ws8PnCxfGZhRznzXb1wStF53eB3NJnntFI=; b=gq4FvK544mnZv4nWe0nj11JFpzjLm5sVuMG2JB+lAl/or230C+vI3thHTfJjZ/PylT Hjns/uWg2fU+yRPgmVL2lsH4m74pad08Z1ejp2yzw8b/6YYK47aNSIdURyRKCPwtnlw6 xCOSNPpLNCHNRj/c4yA47TMTz1E/biKXs3ZFenKLYefFw50wO5F4i3ZuP9ikFcYR4uDZ IkLkYTg6kxbQvBpLuO5A397Afdc/nD/HcywQYeS204ObDa9IIJk+iVGAUTd/3KEaggh1 qir23WUkVA9vHfFbsUshJCGIbEa5oW8PU4fboaPjq029ZhyFtJRoO9oQpzwfEgREs/n2 3Kbg== X-Gm-Message-State: AOAM533AXpFmrv050lwf2osITSv+St1UzTsVDbRj06e62Z2muJTl1I0X Rm4Tpe6GHY0S60coTHFUdAtbsLshnVEiWItHqJyGKvRTmLY= X-Google-Smtp-Source: ABdhPJxBd3uGbnJfLb5bCYZI+6RVJM1JAQDtWlicw0GbgEj/l+aPAKWuxdV8pe3mf/C5ghMg83XwdhQCc1pMk8+1yb4= X-Received: by 2002:a05:6512:5d3:: with SMTP id o19mr3329917lfo.470.1630685468813; Fri, 03 Sep 2021 09:11:08 -0700 (PDT) MIME-Version: 1.0 Date: Fri, 3 Sep 2021 13:10:59 -0300 Message-ID: Subject: About DLL compilation problem To: cygwin AT cygwin DOT com X-Spam-Status: No, score=-0.2 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_ENVFROM_END_DIGIT, FREEMAIL_FROM, HTML_MESSAGE, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: cygwin AT cygwin DOT com X-Mailman-Version: 2.1.29 List-Id: General Cygwin discussions and problem reports List-Archive: List-Post: List-Help: List-Subscribe: , From: Ricardo Santos Pereira via Cygwin Reply-To: Ricardo Santos Pereira Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Cygwin" Hi Corina just figured out that a .def file in a dll may export function from a dll that is referenced in the compilation stage like this: gcc file.c external.dll def.def -o out.dll if in the def.def it has a function that is in the file.c and also available in external.dll it may generate an invalid out.dll I don't know but this looks like a problem in gcc that need to be fixed, spend one hour modifying my function in file.c and it was linking with external.dll then I commented the function inside file.c and saw the compilation stage finished without a link error if it is a GCC feature then a warning about expernal DLL linkage could help a lot when the function exported is inside an external DLL hope to have explained it in an easy way Ricardo -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple