Your message dated Mon, 16 Feb 2026 19:22:44 +0000
with message-id <[email protected]>
and subject line Bug#1015371: fixed in cmt 1.18-2
has caused the Debian Bug report #1015371,
regarding cmt: ftbfs with LTO (link time optimization) enabled
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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--
1015371: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1015371
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: src:cmt
Version: 1.18-1
Severity: minor
Tags: sid bookworm
User: [email protected]
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/cmt_1.18-1_unstable_dpkglto.log
The last lines of the build log are at the end of this report.
[...]
dh_auto_build -O--sourcedirectory=src
cd src && make -j8 "INSTALL=install --strip-program=true"
make[1]: Entering directory '/<<PKGBUILDDIR>>/src'
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o am.o am.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o ambisonic.o ambisonic.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o amp.o amp.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o analogue.o analogue.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o canyondelay.o canyondelay.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o cmt.o cmt.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o descriptor.o descriptor.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o delay.o delay.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o dynamic.o dynamic.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o filter.o filter.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o freeverb/Components/allpass.o
freeverb/Components/allpass.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o freeverb/Components/comb.o
freeverb/Components/comb.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o freeverb/Components/revmodel.o
freeverb/Components/revmodel.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o freeverb/freeverb.o
freeverb/freeverb.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o grain.o grain.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o init.o init.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o lofi.o lofi.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o mixer.o mixer.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o noise.o noise.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o null.o null.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o organ.o organ.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o peak.o peak.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o phasemod.o phasemod.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o sine.o sine.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o syndrum.o syndrum.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o vcf303.o vcf303.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o wshape_sine.o wshape_sine.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o hardgate.o hardgate.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o disintegrator.o disintegrator.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o pink.o pink.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o pink_full.o pink_full.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o pink_sh.o pink_sh.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o sledgehammer.o sledgehammer.cpp
g++ -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects
-fstack-protector-strong -Wformat -Werror=format-security -Wall -Werror -O2
-fPIC -Wdate-time -D_FORTIFY_SOURCE=2 -c -o logistic.o logistic.cpp
mkdir -p ../plugins
g++ -shared -flto=auto -ffat-lto-objects -Wl,-z,relro -Wl,-z,now
\
-g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto
-ffat-lto-objects -fstack-protector-strong -Wformat -Werror=format-security
-Wall -Werror -O2 -fPIC \
-fvisibility=hidden \
-fvisibility-inlines-hidden \
-Wl,--version-script=gcc_exports.map \
-o ../plugins/cmt.so \
am.o ambisonic.o amp.o analogue.o canyondelay.o cmt.o descriptor.o
delay.o dynamic.o filter.o freeverb/Components/allpass.o
freeverb/Components/comb.o freeverb/Components/revmodel.o freeverb/freeverb.o
grain.o init.o lofi.o mixer.o noise.o null.o organ.o peak.o phasemod.o sine.o
syndrum.o vcf303.o wshape_sine.o hardgate.o disintegrator.o pink.o pink_full.o
pink_sh.o sledgehammer.o logistic.o
analogue.cpp:66:16: error: type ‘struct Envelope’ violates the C++ One
Definition Rule [-Werror=odr]
66 | typedef struct Envelope
| ^
organ.cpp:60:16: note: a different type is defined in another translation unit
60 | typedef struct Envelope
| ^
analogue.cpp:69:16: note: the first difference of corresponding definitions is
field ‘envelope’
69 | LADSPA_Data envelope;
| ^
organ.cpp:63:16: note: a field of same name but different type is defined in
another translation unit
63 | double envelope;
| ^
analogue.cpp:66:16: note: type ‘LADSPA_Data’ should match type ‘double’
66 | typedef struct Envelope
| ^
lto1: all warnings being treated as errors
lto-wrapper: fatal error: g++ returned 1 exit status
compilation terminated.
/usr/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status
make[1]: *** [Makefile:71: ../plugins/cmt.so] Error 1
make[1]: Leaving directory '/<<PKGBUILDDIR>>/src'
dh_auto_build: error: cd src && make -j8 "INSTALL=install --strip-program=true"
returned exit code 2
make: *** [debian/rules:10: binary] Error 25
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
--- End Message ---
--- Begin Message ---
Source: cmt
Source-Version: 1.18-2
Done: Joël Krähemann <[email protected]>
We believe that the bug you reported is fixed in the latest version of
cmt, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Joël Krähemann <[email protected]> (supplier of updated cmt package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Mon, 16 Feb 2026 20:02:18 +0100
Source: cmt
Architecture: source
Version: 1.18-2
Distribution: unstable
Urgency: medium
Maintainer: Debian Multimedia Maintainers <[email protected]>
Changed-By: Joël Krähemann <[email protected]>
Closes: 1015371 1096012
Changes:
cmt (1.18-2) unstable; urgency=medium
.
[ Olivier Humbert ]
* debian/changelog: factorisation on the previous 1.18-1 entry.
.
[ Joël Krähemann ]
* applied patch to fix bug (Closes: #1096012)
* applied patch to fix bug (Closes: #1015371)
* added myself to uploaders
.
[ Sebastian Ramacher ]
* debian/control:
- Bump Standards-Version
- Drop Priority: optional
- Drop RRR: no
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Files:
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