https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/ Issue: media-sound/hydrogen-1.1.1 fails to compile (lto). Discovered on: amd64 (internal ref: lto_tinderbox) NOTE: This machine uses lto with CFLAGS=-flto -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing
Created attachment 794156 [details] build.log build log and emerge --info
Error(s) that match a know pattern in addition to what has been reported in the summary: -- Package 'alsa', required by 'virtual:world', not found -- Package 'cppunit', required by 'virtual:world', not found -- Package 'jack', required by 'virtual:world', not found -- Package 'lash-1.0', required by 'virtual:world', not found -- Package 'liblo', required by 'virtual:world', not found -- Package 'libpulse', required by 'virtual:world', not found -- Package 'lrdf', required by 'virtual:world', not found -- Package 'oss', required by 'virtual:world', not found -- Package 'portaudio-2.0', required by 'virtual:world', not found -- Package 'portmidi', required by 'virtual:world', not found -- Package 'rubberband', required by 'virtual:world', not found -- Package 'tar', required by 'virtual:world', not found -- Could NOT find ALSA (missing: ALSA_LIBRARIES ALSA_INCLUDE_DIRS) -- Could NOT find CPPUNIT (missing: CPPUNIT_LIBRARIES CPPUNIT_INCLUDE_DIRS) -- Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE) -- Could NOT find JACK (missing: JACK_LIBRARIES JACK_INCLUDE_DIRS) -- Could NOT find LADSPA (missing: LADSPA_INCLUDE_DIR) -- Could NOT find LASH (missing: LASH_LIBRARIES LASH_INCLUDE_DIRS) -- Could NOT find LIBTAR (missing: LIBTAR_LIBRARIES) -- Could NOT find LRDF (missing: LRDF_LIBRARIES LRDF_INCLUDE_DIRS) -- Could NOT find OSC (missing: OSC_LIBRARIES OSC_INCLUDE_DIRS) -- Could NOT find OSS (missing: OSS_LIBRARIES) -- Could NOT find PORTAUDIO (missing: PORTAUDIO_LIBRARIES PORTAUDIO_INCLUDE_DIRS) -- Could NOT find PORTMIDI (missing: PORTMIDI_LIBRARIES PORTMIDI_INCLUDE_DIRS) -- Could NOT find PULSEAUDIO (missing: PULSEAUDIO_LIBRARIES PULSEAUDIO_INCLUDE_DIRS) -- Could NOT find RUBBERBAND (missing: RUBBERBAND_LIBRARIES RUBBERBAND_INCLUDE_DIRS) FAILED: src/gui/hydrogen fatal: not a git repository (or any parent up to mount point /var/tmp) /var/tmp/portage/media-sound/hydrogen-1.1.1/work/hydrogen-1.1.1/src/gui/src/ExportMidiDialog.cpp:39:6: error: type ‘ExportModes’ violates the C++ One Definition Rule [-Werror=odr]
Here is a bit of explanation: -Werror=lto-type-mismatch: User to find possible runtime issues in packages. It likely means the package is unsafe to build & use with LTO. For projects using the same identifier but with different types across different files, they must be fixed to be consistent across the codebase. -Werror=odr: Used to find possible runtime issues in packages. These bugs are a problem anyway but may be even worse when combined with LTO. C++ code must comply with the One Definition Rule (ODR) - see https://en.cppreference.com/w/cpp/language/definition#One_Definition_Rule. -Werror=strict-aliasing: Used to find possible runtime issues in packages. These bugs are a problem anyway but may be even worse when combined with LTO. Workarounds: - If upstream is friendly and still active, file a bug upstream. For emulators, codecs, games, or multimedia packages, it may be worth just applying a workaround instead, as upstreams sometimes aren't receptive to these bugs (VALID FOR ALL). - Use the new 'filter-lto' from flag-o-matic.eclass as it's likely to be unsafe with LTO (VALID FOR lto-type-mismatch - odr). - Fix it yourself if interested, of course (VALID FOR ALL). - Append-flags -fno-strict-aliasing (VALID FOR strict-aliasing). - Use memcpy() but a union is sometimes suitable too (VALID FOR strict-aliasing). - -fstrict-aliasing is implied by -O2, so this must be addressed in some form (VALID FOR strict-aliasing). See also: https://marc.info/?l=gentoo-dev&m=165639574126280&w=2
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=b1e56be18ee653048dd45012dee01e0e67a187eb commit b1e56be18ee653048dd45012dee01e0e67a187eb Author: Miroslav Šulc <fordfrog@gentoo.org> AuthorDate: 2023-05-10 05:24:58 +0000 Commit: Miroslav Šulc <fordfrog@gentoo.org> CommitDate: 2023-05-10 05:24:58 +0000 media-sound/hydrogen: dropped obsolete 1.1.1 Bug: https://bugs.gentoo.org/905988 Closes: https://bugs.gentoo.org/860864 Signed-off-by: Miroslav Šulc <fordfrog@gentoo.org> media-sound/hydrogen/Manifest | 1 - media-sound/hydrogen/hydrogen-1.1.1.ebuild | 97 ------------------------------ 2 files changed, 98 deletions(-)
