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List: cmake
Subject: [CMake] Ninja generator bug when handling Windows .dll without associated import .lib
From: Kamen Lilov <kamen.lilov () chaosgroup ! com>
Date: 2016-07-22 12:19:21
Message-ID: AM4PR0401MB205212AE5B13F1B5809A8CC58E0A0 () AM4PR0401MB2052 ! eurprd04 ! prod ! outlook ! com
[Download RAW message or body]
Hello,
Apologies if this is a duplicate, I searched the net but was unable to find=
references to this bug.
When a Windows .DLL is generated, the Microsoft linker may sometimes decide=
that no import library needs to be built. This happens often in one of our=
projects, we have many .dll's that tie themselves into our infrastructure =
during static class initialization and export no functions (although they d=
o work and get called via class method pointers from elsewhere)
The Ninja CMake generator seems to always emit a dependency on an associate=
d import library along with the .dll file. This causes Ninja to think that =
a just-built .dll is out of sync (as it can't find the import library file)=
and relink it, even though it is not dirty.
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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Apologies if this is a duplicate, I searched the net but was \
unable to find references to this bug.<o:p></o:p></p> <p \
class="MsoNormal"><o:p> </o:p></p> <p class="MsoNormal">When a Windows .DLL is \
generated, the Microsoft linker may sometimes decide that no import library needs to \
be built. This happens often in one of our projects, we have many .dll’s that \
tie themselves into our infrastructure during static class initialization and export \
no functions (although they do work and get called via class method pointers from \
elsewhere)<o:p></o:p></p> <p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The Ninja CMake generator seems to always emit a dependency on \
an associated import library along with the .dll file. This causes Ninja to think \
that a just-built .dll is out of sync (as it can’t find the import library \
file) and relink it, even though it is not dirty.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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