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

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.

Task-number: QTBUG-104450
Change-Id: Ibe636a0ac5d18aefb44f2b7179b59fcec2ad8353
Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
(cherry picked from commit 073214fdf943e1a0beb660a039e39dc1ea43836e)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
This commit is contained in:
Joerg Bornemann 2022-06-21 15:15:58 +02:00 committed by Qt Cherry-pick Bot
parent b6baf3ce00
commit 57a44d15cb

View File

@ -410,7 +410,7 @@ VCCLCompilerTool::VCCLCompilerTool()
CompileForArchitecture(archUnknown),
InterworkCalls(unset),
EnablePREfast(unset),
DisplayFullPaths(unset),
DisplayFullPaths(_False),
MultiProcessorCompilation(unset),
GenerateXMLDocumentationFiles(unset),
CreateHotpatchableImage(unset)