https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/ Issue: sci-geosciences/opencpn-5.6.2 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 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
Created attachment 796252 [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 'sndfile', required by 'virtual:world', not found -- Could NOT find EXIF (missing: EXIF_LIBRARY EXIF_INCLUDE_DIR) (found version "") -- Could NOT find Jasper (missing: JASPER_LIBRARIES JASPER_INCLUDE_DIR) -- Could NOT find LIBUSB (missing: LIBUSB_INCLUDE_DIR LIBUSB_LIBRARIES) -- Could NOT find LibSndFile (missing: LIBSNDFILE_LIBRARY LIBSNDFILE_INCLUDE_DIR) -- Could NOT find wxWidgets (missing: wxWidgets_LIBRARIES) -- Could not find wxWidgets webview add-on -- ENABLE_LIBSNDFILE is set but I cannot find libsndfile -- OCPN_ENABLE_SYSTEM_CMD_SOUND is set but I cannot find aplay(1) or afplay(1) or omxplayer(1) /var/tmp/portage/sci-geosciences/opencpn-5.6.2/work/OpenCPN-Release_5.6.2/src/linux_devices.cpp:45:10: fatal error: libusb.h: No such file or directory FAILED: CMakeFiles/opencpn.dir/src/linux_devices.cpp.o /var/tmp/portage/sci-geosciences/opencpn-5.6.2/work/OpenCPN-Release_5.6.2/src/linux_devices.cpp:43:2: error: #error linux_devices requires libusb-1.0 to be available
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=5d08c4cb6dc345dc7e784027cb6a8dc4717cad76 commit 5d08c4cb6dc345dc7e784027cb6a8dc4717cad76 Author: Marc Schiffbauer <mschiff@gentoo.org> AuthorDate: 2023-06-03 11:41:12 +0000 Commit: Marc Schiffbauer <mschiff@gentoo.org> CommitDate: 2023-06-03 11:43:00 +0000 sci-geosciences/opencpn: fix build deps Closes: https://bugs.gentoo.org/862591 Closes: https://bugs.gentoo.org/846953 Bug: https://bugs.gentoo.org/907738 Signed-off-by: Marc Schiffbauer <mschiff@gentoo.org> sci-geosciences/opencpn/opencpn-5.6.2-r2.ebuild | 7 +-- sci-geosciences/opencpn/opencpn-5.6.2-r3.ebuild | 63 +++++++++++++++++++++++ sci-geosciences/opencpn/opencpn-5.8.2-r2.ebuild | 67 +++++++++++++++++++++++++ 3 files changed, 134 insertions(+), 3 deletions(-)
