Bug 582480 – kde-base/kdelibs-4.14.19: building w/gcc-6: error: inconsistent user-defined literal suffixes 'reg' and 'reg1' in string literal

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Peter Levine 2016-05-08 21:43:42 UTC]

Using gcc-6* to compile kde-base/kdelibs-4.14.19 fails with "error: inconsistent user-defined literal suffixes 'reg' and 'reg1' in string literal"

[Comment 1 Peter Levine 2016-05-08 21:50:50 UTC]

Created attachment 433684 [details, diff]
kdelibs-4.14.17-gcc6_literals.patch

Patch to fix compilation kdelibs-4.14.19 and kdelibs-4.14.18 with gcc-6* (taken from Fedora)

Patch 1 of 3

[Comment 2 Peter Levine 2016-05-08 21:51:39 UTC]

Created attachment 433686 [details, diff]
kdelibs-4.14.17-gcc6_narrowing_hack.patch

Patch to fix compilation kdelibs-4.14.19 and kdelibs-4.14.18 with gcc-6* (taken from Fedora)

Patch 2 of 3

[Comment 3 Peter Levine 2016-05-08 21:53:02 UTC]

Created attachment 433688 [details, diff]
kdelibs-4.14.17-glibc_trunc.patch

Patch to fix compilation kdelibs-4.14.19 and kdelibs-4.14.18 with gcc-6* (taken from Fedora)

Patch 3 of 3

[Comment 4 Michael Palimaka (kensington) 2016-05-12 12:22:54 UTC]

These patches should go upstream.

[Comment 5 Peter Levine 2016-05-12 18:23:43 UTC]

(In reply to Michael Palimaka (kensington) from comment #4)
> These patches should go upstream.

I would agree but, as stated, these are Fedora patches (http://pkgs.fedoraproject.org/cgit/rpms/kdelibs.git/tree/)

I'm a bit apprehensive about submitting patches on behalf of another distribution but I mentioned them here:

https://bugs.kde.org/show_bug.cgi?id=360735

[Comment 6 Mark Wright 2016-05-23 09:55:58 UTC]

kde-base/kdelibs-4.14.20-r1 builds fine with gcc version 6.1.0 (Gentoo Hardened 6.1.0 p1.1) using the 3 patches (from Comment 1, 2, 3).

[Comment 7 Michael Palimaka (kensington) 2016-06-15 12:12:36 UTC]

This is partially fixed upstream in 4.14.22: https://quickgit.kde.org/?p=kdelibs.git&a=commitdiff&h=e36051fd7cf46093bf96cb5eb987102a605be52a

[Comment 8 Alexey Shvetsov 2016-07-24 17:15:57 UTC]

Yep. But still doesnt build with gcc-6

[Comment 9 Alexander Straube 2016-09-12 19:04:50 UTC]

I had same issue with =kde-base/kdelibs-4.14.24 and =sys-devel/gcc-6.1.0 but after applying kdelibs-4.14.17-glibc_trunc.patch and kdelibs-4.14.17-gcc6_narrowing_hack.patch everything went through.

[Comment 10 Andreas Sturmlechner 2016-10-12 17:11:16 UTC]

Are these patches actually up for review upstream?

[Comment 11 devsk 2016-10-19 19:16:53 UTC]

kdelibs-4.14.25 fails with:

In file included from /usr/include/math.h:83:0,
                 from /usr/lib/gcc/x86_64-pc-linux-gnu/6.2.0/include/g++-v6/cmath:45,
                 from /usr/lib/gcc/x86_64-pc-linux-gnu/6.2.0/include/g++-v6/math.h:36,
                 from /usr/include/OpenEXR/ImathPlatform.h:48,
                 from /usr/include/OpenEXR/ImathMath.h:83,
                 from /usr/include/OpenEXR/ImathVec.h:48,
                 from /usr/include/OpenEXR/ImfHeader.h:51,
                 from /usr/include/OpenEXR/ImfRgbaFile.h:50,
                 from /var/tmp/portage/kde-base/kdelibs-4.14.25/work/kdelibs-4.14.25/kimgio/exr.cpp:15:
/usr/include/bits/mathcalls.h:323:15: error: declaration of 'double trunc(double) throw ()' has a different exception specifier
 __MATHCALLX (trunc,, (_Mdouble_ __x), (__const__));
               ^~~~~
In file included from /var/tmp/portage/kde-base/kdelibs-4.14.25/work/kdelibs-4.14.25_build/config.h:140:0,
                 from /var/tmp/portage/kde-base/kdelibs-4.14.25/work/kdelibs-4.14.25/kimgio/exr.cpp:13:
/var/tmp/portage/kde-base/kdelibs-4.14.25/work/kdelibs-4.14.25_build/kdecore/kdefakes.h:178:8: note: from previous declaration 'double trunc(double)'
 double trunc(double);
        ^~~~~
make[2]: *** [kimgio/CMakeFiles/kimg_exr.dir/build.make:87: kimgio/CMakeFiles/kimg_exr.dir/exr.cpp.o] Error 1
make[2]: Leaving directory '/var/tmp/portage/kde-base/kdelibs-4.14.25/work/kdelibs-4.14.25_build'


Looks like "double trunc(double);" was there because gcc did not have that definition until recently.

[Comment 12 Andreas Sturmlechner 2016-10-19 20:16:06 UTC]

This looks like a possible fix? https://quickgit.kde.org/?p=kdelibs.git&a=commit&h=0c642ae95dacf894e50630ffcc1961ad1e4e0322

[Comment 13 Joe Kappus 2016-10-19 21:39:56 UTC]

That last patch Andreas mentioned in previous comment worked to stop the last build error.

[Comment 14 Andreas Sturmlechner 2016-10-20 21:17:15 UTC]

That patch is now in git, and soon on an rsync mirror near you. kde-base/kdelibs-4.14.25 should build successfully in a few hours.