https://bugs.kde.org/show_bug.cgi?id=374588
Bug ID: 374588
Summary: kwin 5.8.5 compilation fails with lto enabled
gcc-5.4.0
Product: kwin
Version: 5.8.5
Platform: Gentoo Packages
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: fabio.coa...@gmail.com
Target Milestone: ---
Hi all,
I'm compiling kwin-5.8.5 on a gentoo system with gcc-5.4.0. Without LTO flag
enabled the compilation is successful; however with lto enabled the
compilation/linking fails with this error:
[ 52%] Linking CXX shared module kwin5_aurorae.so
cd
/var/tmp/portage/kde-plasma/kwin-5.8.5/work/kwin-5.8.5_build/plugins/kdecorations/aurorae/src
&& /usr/bin/cmake -E cmake_link_script CMakeFiles/kwin5_aurorae.dir/link.txt
--verbose=1
/usr/bin/x86_64-pc-linux-gnu-g++ -fPIC -O2 -fpie -fpic -pipe -march=native
-fstack-protector-strong -flto=4 -fuse-linker-plugin -std=c++0x -fno-exceptions
-Wall -Wextra -Wcast-align -Wchar-subscripts -Wformat-security -Wno-long-long
-Wpointer-arith -Wundef -Wnon-virtual-dtor -Woverloaded-virtual
-Werror=return-type -Wl,--no-undefined -Wl,--fatal-warnings
-Wl,--enable-new-dtags -Wl,-O1 -Wl,--as-needed -O2 -fpie -fpic -pipe
-march=native -fstack-protector-strong -flto=4 -fuse-linker-plugin -shared -o
kwin5_aurorae.so CMakeFiles/kwin5_aurorae.dir/aurorae.cpp.o
CMakeFiles/kwin5_aurorae.dir/decorationoptions.cpp.o
CMakeFiles/kwin5_aurorae.dir/lib/auroraetheme.cpp.o
CMakeFiles/kwin5_aurorae.dir/lib/themeconfig.cpp.o
CMakeFiles/kwin5_aurorae.dir/kwin5_aurorae_automoc.cpp.o
/usr/lib64/libkdecorations2.so.5.8.5 /usr/lib64/libKF5ConfigWidgets.so.5.29.0
/usr/lib64/libKF5Package.so.5.29.0 /usr/lib64/libKF5WindowSystem.so.5.29.0
/usr/lib64/libQt5Quick.so.5.7.1 /usr/lib64/libQt5UiTools.a
/usr/lib64/libKF5Codecs.so.5.29.0 /usr/lib64/libKF5WidgetsAddons.so.5.29.0
/usr/lib64/libKF5ConfigGui.so.5.29.0 /usr/lib64/libQt5Xml.so.5.7.1
/usr/lib64/libKF5ConfigCore.so.5.29.0 /usr/lib64/libKF5Auth.so.5.29.0
/usr/lib64/libKF5I18n.so.5.29.0 /usr/lib64/libKF5CoreAddons.so.5.29.0
/usr/lib64/libQt5Qml.so.5.7.1 /usr/lib64/libQt5Network.so.5.7.1
/usr/lib64/libQt5Widgets.so.5.7.1 /usr/lib64/libQt5Gui.so.5.7.1
/usr/lib64/libQt5Core.so.5.7.1
x86_64-pc-linux-gnu-g++: warning: ‘-mpcommit’ was deprecated
lto1: warning: ‘-mpcommit’ was deprecated
x86_64-pc-linux-gnu-g++: warning: ‘-mpcommit’ was deprecated
x86_64-pc-linux-gnu-g++: warning: ‘-mpcommit’ was deprecated
x86_64-pc-linux-gnu-g++: warning: ‘-mpcommit’ was deprecated
x86_64-pc-linux-gnu-g++: warning: ‘-mpcommit’ was deprecated
lto1: warning: ‘-mpcommit’ was deprecated
lto1: warning: ‘-mpcommit’ was deprecated
lto1: warning: ‘-mpcommit’ was deprecated
lto1: warning: ‘-mpcommit’ was deprecated
x86_64-pc-linux-gnu-g++: warning: ‘-mpcommit’ was deprecated
x86_64-pc-linux-gnu-g++: warning: ‘-mpcommit’ was deprecated
lto1: warning: ‘-mpcommit’ was deprecated
lto1: warning: ‘-mpcommit’ was deprecated
x86_64-pc-linux-gnu-g++: warning: ‘-mpcommit’ was deprecated
lto1: warning: ‘-mpcommit’ was deprecated
../lib/uilib/abstractformbuilder.cpp: In member function ‘saveBrush’:
../lib/uilib/abstractformbuilder.cpp:1150:11: error: SSE register return with
SSE disabled
make[3]: *** [/var/tmp/portage/kde-plasma/kwin-5.8.5/temp/ccK7ZyaG.mk:17:
/var/tmp/portage/kde-plasma/kwin-5.8.5/temp/ccwi8lP6.ltrans5.ltrans.o] Error 1
make[3]: *** Waiting for unfinished jobs....
lto-wrapper: fatal error: make returned 2 exit status
compilation terminated.
Not really a showstopper as the packages compiles fine without LTO, however
this could be interesting to know for developers.
Cheers,
Fabio.
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