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qmake/msbuild: Turn off "use full paths in diagnostics" by default

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The default setting for "Full Path of Source Code File in Diagnostics"
changed with VS 2017: it's now turned on by default.  It can also be
enabled with the compiler flag /FC, but there is no flag for turning it
off.

Users might want to disable /FC to obtain reproducable binaries.

Change qmake's default from "use Visual Studio's default" to "off" for
this feature.  Users can enable it manually by putting the following
into their project files:

    QMAKE_CXXFLAGS += /FC

CMake faced the same problem.  See CMake upstream issue #18261 for
comparison.

Pick-to: 5.15 6.2 6.3 6.4
Task-number: QTBUG-104450
Change-Id: Ibe636a0ac5d18aefb44f2b7179b59fcec2ad8353
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
This commit is contained in:
Joerg Bornemann 2022-06-21 15:15:58 +02:00
parent 6a6b27940d
commit 073214fdf9
1 changed files with 1 additions and 1 deletions
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2
qmake/generators/win32/msvc_objectmodel.cpp
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@ -383,7 +383,7 @@ VCCLCompilerTool::VCCLCompilerTool()
CompileForArchitecture(archUnknown),
InterworkCalls(unset),
EnablePREfast(unset),
DisplayFullPaths(unset),
DisplayFullPaths(_False),
MultiProcessorCompilation(unset),
GenerateXMLDocumentationFiles(unset),
CreateHotpatchableImage(unset)