Review Request 114885: Remove custom build types

[David Faure]

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Ship it!


Nice, this also fixes some inconsistencies between compilers.

I tested in a pure qt5+cmake test (no ECM) that:
* RelWithDebInfo already sets -DQT_NO_DEBUG -O2 -g -DNDEBUG. So this was indeed unnecessary by now.
* Release sets -DQT_NO_DEBUG -O3 -DNDEBUG, which is even better (-O3 vs -O2) than what ECM was doing.
* Debug sets -g. No -O2, which isn't expected in debug mode. 


- David Faure


On Jan. 7, 2014, 4:30 p.m., Alex Merry wrote:
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> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/114885/
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> (Updated Jan. 7, 2014, 4:30 p.m.)
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> 
> Review request for Build System, KDE Frameworks, David Faure, Kevin Ottens, and Stephen Kelly.
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> Repository: extra-cmake-modules
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> Description
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> This is a cleaned-up version of https://git.reviewboard.kde.org/r/113805/ , with documentation fixes.  The discussion there appeared to end up being largely in favour of this move.
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> Obviously, this can only go in once TP1 is done.
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> 
> Remove custom build types
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> KDECompilerSettings.cmake no longer alters CMake's built-in build types
> or adds its own.  The "debug" build type therefore simply sets -g with
> no additional flags (rather than -O2 and, depending on the compiler,
> some no-inline/no-reorder flags as previously), the "release" build
> types no longer set -DQT_NO_DEBUG and the "debugfull", "profile" and
> "coverage" build types no longer exist.
> 
> QT_NO_DEBUG is set by Qt's CMake scripts depending on the build type of
> Qt itself.  "debugfull" mostly set -g3, allowing macro expansion when
> debugging; users can set this flag using environment variables if they
> wish.  "RelWithDebugInfo" should be used instead of "profile" (according
> to dfaure); -fprofile-arcs and -ftest-coverage are easy enough to add to
> $CXX_FLAGS if they are required (formerly set by "profile" and
> "coverage").
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> 
> Diffs
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>   kde-modules/KDECompilerSettings.cmake 72824e166d03dcc2d089814dc121f08ba998974a 
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> Diff: https://git.reviewboard.kde.org/r/114885/diff/
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> Testing
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> Built kcoreaddons on linux with gcc.  -DCMAKE_BUILD_TYPE=debugfull works, but does not set -g.  -DCMAKE_BUILD_TYPE=debug does set -g.
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> 
> Thanks,
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> Alex Merry
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>

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