[Pkg-kde-extras] Bug#1015685: telepathy-qt: ftbfs with LTO (link time optimization) enabled

[Matthias Klose]

Package: src:telepathy-qt
Version: 0.9.8+ds-4
Severity: minor
Tags: sid bookworm
User: debian-gcc at lists.debian.org
Usertags: ftbfs-lto

This package currently fails to build (at least on the amd64
architecture) with link time optimizations enabled.  For a background
for LTO please see

https://wiki.debian.org/ToolChain/LTO

The goal is to enable this optimization by default in an upcoming
Debian release in dpkg-buildflags for 64bit architectures.  The goal
is to get this package to build with link time optimizations, or to
explicitly disable link time optimizations for this package build.

To reproduce the build failure, enable the lto optimization in
testing/unstable by adding "optimize=+lto" to DEB_BUILD_MAINT_OPTIONS
in the debian/rules file, or if this macro is unset, just set it:

export DEB_BUILD_MAINT_OPTIONS = optimize=+lto

Please try to fix the build with lto enabled, fixing the packaging or
forwarding the issue upstream. If the issue cannot be fixed,
explicitly disallow building the package with lto by adding to your
rules file:

export DEB_BUILD_MAINT_OPTIONS = optimize=-lto

or adding that string to your existing setting of DEB_BUILD_MAINT_OPTIONS.

The full build log can be found at:
http://qa-logs.debian.net/2022/06/09/dpkglto/telepathy-qt_0.9.8+ds-4_unstable_dpkglto.log
The last lines of the build log are at the end of this report.

[...]
+#MISSING: 0.9.8+ds-4# _ZTIN2Tp14ChannelFactory12SubclassCtorINS_20StreamedMediaChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTIN2Tp14ChannelFactory12SubclassCtorINS_23IncomingDBusTubeChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTIN2Tp14ChannelFactory12SubclassCtorINS_23OutgoingDBusTubeChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTIN2Tp14ChannelFactory12SubclassCtorINS_25IncomingStreamTubeChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTIN2Tp14ChannelFactory12SubclassCtorINS_25OutgoingStreamTubeChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTIN2Tp14ChannelFactory12SubclassCtorINS_27IncomingFileTransferChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTIN2Tp14ChannelFactory12SubclassCtorINS_27OutgoingFileTransferChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTIN2Tp14ChannelFactory12SubclassCtorINS_27ServerAuthenticationChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTIN2Tp14ChannelFactory12SubclassCtorINS_7ChannelEEE at Base 0.9.5
  _ZTIN2Tp14ChannelFactoryE at Base 0.9.5
  _ZTIN2Tp14ChannelRequestE at Base 0.9.5
  _ZTIN2Tp14ContactFactoryE at Base 0.9.5
@@ -4555,7 +4555,7 @@
  _ZTVN2Tp10AccountSetE at Base 0.9.5
  _ZTVN2Tp10CallStreamE at Base 0.9.5
  _ZTVN2Tp10ConnectionE at Base 0.9.5
- _ZTVN2Tp10RefCountedE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTVN2Tp10RefCountedE at Base 0.9.5
  _ZTVN2Tp11CallChannelE at Base 0.9.5
  _ZTVN2Tp11CallContentE at Base 0.9.5
  _ZTVN2Tp11PendingVoidE at Base 0.9.5
@@ -4569,20 +4569,20 @@
  _ZTVN2Tp14AbstractClientE at Base 0.9.5
  _ZTVN2Tp14AccountFactoryE at Base 0.9.5
  _ZTVN2Tp14AccountManagerE at Base 0.9.5
- (optional)_ZTVN2Tp14ChannelFactory11ConstructorE at Base 0.9.8
- _ZTVN2Tp14ChannelFactory12SubclassCtorINS_11CallChannelEEE at Base 0.9.5
- _ZTVN2Tp14ChannelFactory12SubclassCtorINS_11TextChannelEEE at Base 0.9.5
- _ZTVN2Tp14ChannelFactory12SubclassCtorINS_15RoomListChannelEEE at Base 0.9.5
- _ZTVN2Tp14ChannelFactory12SubclassCtorINS_20ContactSearchChannelEEE at Base 0.9.5
- _ZTVN2Tp14ChannelFactory12SubclassCtorINS_20StreamedMediaChannelEEE at Base 0.9.5
- _ZTVN2Tp14ChannelFactory12SubclassCtorINS_23IncomingDBusTubeChannelEEE at Base 0.9.5
- _ZTVN2Tp14ChannelFactory12SubclassCtorINS_23OutgoingDBusTubeChannelEEE at Base 0.9.5
- _ZTVN2Tp14ChannelFactory12SubclassCtorINS_25IncomingStreamTubeChannelEEE at Base 0.9.5
- _ZTVN2Tp14ChannelFactory12SubclassCtorINS_25OutgoingStreamTubeChannelEEE at Base 0.9.5
- _ZTVN2Tp14ChannelFactory12SubclassCtorINS_27IncomingFileTransferChannelEEE at Base 0.9.5
- _ZTVN2Tp14ChannelFactory12SubclassCtorINS_27OutgoingFileTransferChannelEEE at Base 0.9.5
- _ZTVN2Tp14ChannelFactory12SubclassCtorINS_27ServerAuthenticationChannelEEE at Base 0.9.5
- _ZTVN2Tp14ChannelFactory12SubclassCtorINS_7ChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# (optional)_ZTVN2Tp14ChannelFactory11ConstructorE at Base 0.9.8
+#MISSING: 0.9.8+ds-4# _ZTVN2Tp14ChannelFactory12SubclassCtorINS_11CallChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTVN2Tp14ChannelFactory12SubclassCtorINS_11TextChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTVN2Tp14ChannelFactory12SubclassCtorINS_15RoomListChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTVN2Tp14ChannelFactory12SubclassCtorINS_20ContactSearchChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTVN2Tp14ChannelFactory12SubclassCtorINS_20StreamedMediaChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTVN2Tp14ChannelFactory12SubclassCtorINS_23IncomingDBusTubeChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTVN2Tp14ChannelFactory12SubclassCtorINS_23OutgoingDBusTubeChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTVN2Tp14ChannelFactory12SubclassCtorINS_25IncomingStreamTubeChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTVN2Tp14ChannelFactory12SubclassCtorINS_25OutgoingStreamTubeChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTVN2Tp14ChannelFactory12SubclassCtorINS_27IncomingFileTransferChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTVN2Tp14ChannelFactory12SubclassCtorINS_27OutgoingFileTransferChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTVN2Tp14ChannelFactory12SubclassCtorINS_27ServerAuthenticationChannelEEE at Base 0.9.5
+#MISSING: 0.9.8+ds-4# _ZTVN2Tp14ChannelFactory12SubclassCtorINS_7ChannelEEE at Base 0.9.5
  _ZTVN2Tp14ChannelFactoryE at Base 0.9.5
  _ZTVN2Tp14ChannelRequestE at Base 0.9.5
  _ZTVN2Tp14ContactFactoryE at Base 0.9.5
dpkg-gensymbols: warning: some new symbols appeared in the symbols file: see diff output below
dpkg-gensymbols: warning: debian/libtelepathy-qt5-farstream0/DEBIAN/symbols doesn't match completely debian/libtelepathy-qt5-farstream0.symbols
--- debian/libtelepathy-qt5-farstream0.symbols (libtelepathy-qt5-farstream0_0.9.8+ds-4_amd64)
+++ dpkg-gensymbols9nIqWf	2022-06-10 08:49:53.203991972 +0000
@@ -11,5 +11,6 @@
  _ZNK2Tp9Farstream14PendingChannel11callChannelEv at Base 0.9.5
  _ZNK2Tp9Farstream14PendingChannel9tfChannelEv at Base 0.9.5
  _ZTIN2Tp9Farstream14PendingChannelE at Base 0.9.5
+ _ZTSN2Tp10RefCountedE at Base 0.9.8+ds-4
  _ZTSN2Tp9Farstream14PendingChannelE at Base 0.9.5
  _ZTVN2Tp9Farstream14PendingChannelE at Base 0.9.5
dh_makeshlibs: error: failing due to earlier errors
make: *** [debian/rules:11: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2