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ZDoom / ZMusic

GZDoom's music system as a standalone library
https://forum.zdoom.org/index.php
60 stars 32 forks source link

Build fails with LTO #56

Closed eli-schwartz closed 4 months ago

eli-schwartz commented 4 months ago

I tried to build with the following *FLAGS to optimize the build: -flto=4 -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing

Note the -Werror=* flags are used to help detect cases where the compiler tries to optimize by assuming UB cannot exist in the source code -- if it does exist, ordinarily the code would be miscompiled, and this says to make the miscompilation a fatal error.

I got this error:

FAILED: source/libzmusic.so.1.1.12 
: && /usr/bin/x86_64-pc-linux-gnu-g++ -fPIC -march=native -fstack-protector-all -O2 -pipe -fdiagnostics-color=always -frecord-gcc-switches -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=3 -fstack-clash-protection -flto=4 -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing  -Wformat -Werror=format-security  -Wl,-O1 -Wl,--as-needed -flto=4 -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing -Wl,--defsym=__gentoo_check_ldflags__=0 -shared -Wl,-soname,libzmusic.so.1 -o source/libzmusic.so.1.1.12 thirdparty/dumb/CMakeFiles/dumb.dir/src/core/unload.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/core/rendsig.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/core/rendduh.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/core/register.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/core/readduh.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/core/rawsig.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/core/makeduh.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/core/loadduh.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/core/dumbfile.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/core/duhtag.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/core/duhlen.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/core/atexit.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/helpers/stdfile.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/helpers/silence.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/helpers/sampbuf.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/helpers/riff.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/helpers/resample.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/helpers/memfile.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/helpers/clickrem.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/helpers/barray.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/xmeffect.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readxm2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readxm.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readstm2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readstm.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/reads3m2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/reads3m.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readriff.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readptm.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readpsm.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readoldpsm.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readokt2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readokt.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readmtm.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readmod2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readmod.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readdsmf.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readasy.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readamf2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readamf.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/readam.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/read6692.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/read669.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/ptmeffect.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadxm2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadxm.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadstm2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadstm.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loads3m2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loads3m.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadriff2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadriff.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadptm2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadptm.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadpsm2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadpsm.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadoldpsm2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadoldpsm.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadokt2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadokt.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadmtm2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadmtm.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadmod2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadmod.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadasy2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadasy.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadamf2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/loadamf.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/load6692.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/load669.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/itunload.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/itrender.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/itread2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/itread.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/itorder.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/itmisc.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/itload2.c.o thirdparty/dumb/CMakeFiles/dumb.dir/src/it/itload.c.o 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thirdparty/game-music-emu/gme/CMakeFiles/gme.dir/Multi_Buffer.cpp.o thirdparty/game-music-emu/gme/CMakeFiles/gme.dir/Music_Emu.cpp.o thirdparty/game-music-emu/gme/CMakeFiles/gme.dir/Ay_Apu.cpp.o thirdparty/game-music-emu/gme/CMakeFiles/gme.dir/Ym2612_Nuked.cpp.o thirdparty/game-music-emu/gme/CMakeFiles/gme.dir/Sms_Apu.cpp.o thirdparty/game-music-emu/gme/CMakeFiles/gme.dir/Ay_Cpu.cpp.o thirdparty/game-music-emu/gme/CMakeFiles/gme.dir/Ay_Emu.cpp.o thirdparty/game-music-emu/gme/CMakeFiles/gme.dir/Gb_Apu.cpp.o thirdparty/game-music-emu/gme/CMakeFiles/gme.dir/Gb_Cpu.cpp.o thirdparty/game-music-emu/gme/CMakeFiles/gme.dir/Gb_Oscs.cpp.o thirdparty/game-music-emu/gme/CMakeFiles/gme.dir/Gbs_Emu.cpp.o thirdparty/game-music-emu/gme/CMakeFiles/gme.dir/Gym_Emu.cpp.o thirdparty/game-music-emu/gme/CMakeFiles/gme.dir/Hes_Apu.cpp.o thirdparty/game-music-emu/gme/CMakeFiles/gme.dir/Hes_Cpu.cpp.o thirdparty/game-music-emu/gme/CMakeFiles/gme.dir/Hes_Emu.cpp.o 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source/CMakeFiles/zmusic.dir/streamsources/music_dumb.cpp.o source/CMakeFiles/zmusic.dir/streamsources/music_gme.cpp.o source/CMakeFiles/zmusic.dir/streamsources/music_libsndfile.cpp.o source/CMakeFiles/zmusic.dir/streamsources/music_opl.cpp.o source/CMakeFiles/zmusic.dir/streamsources/music_xa.cpp.o source/CMakeFiles/zmusic.dir/musicformats/music_stream.cpp.o source/CMakeFiles/zmusic.dir/musicformats/music_midi.cpp.o source/CMakeFiles/zmusic.dir/musicformats/music_cd.cpp.o source/CMakeFiles/zmusic.dir/decoder/sounddecoder.cpp.o source/CMakeFiles/zmusic.dir/decoder/sndfile_decoder.cpp.o source/CMakeFiles/zmusic.dir/decoder/mpg123_decoder.cpp.o source/CMakeFiles/zmusic.dir/zmusic/configuration.cpp.o source/CMakeFiles/zmusic.dir/zmusic/zmusic.cpp.o source/CMakeFiles/zmusic.dir/zmusic/critsec.cpp.o source/CMakeFiles/zmusic.dir/loader/test.c.o source/CMakeFiles/zmusic.dir/mididevices/music_alsa_mididevice.cpp.o source/CMakeFiles/zmusic.dir/mididevices/music_alsa_state.cpp.o  /usr/lib64/libsndfile.so  /usr/lib64/libasound.so  /usr/lib64/libz.so  -ldl  /usr/lib64/libglib-2.0.so && :
/var/tmp/portage/media-libs/zmusic-1.1.12/work/ZMusic-1.1.12/thirdparty/adlmidi/chips/nuked/nukedopl3_174.h:59:8: error: type ‘struct _opl3_slot’ violates the C++ One Definition Rule [-Werror=odr]
   59 | struct _opl3_slot {
      |        ^
/var/tmp/portage/media-libs/zmusic-1.1.12/work/ZMusic-1.1.12/thirdparty/adlmidi/chips/nuked/nukedopl3.h:62:8: note: a different type is defined in another translation unit
   62 | struct _opl3_slot {
      |        ^
/var/tmp/portage/media-libs/zmusic-1.1.12/work/ZMusic-1.1.12/thirdparty/adlmidi/chips/nuked/nukedopl3_174.h:85:12: note: the first difference of corresponding definitions is field ‘pg_phase’
   85 |     Bit32u pg_phase;
      |            ^
/var/tmp/portage/media-libs/zmusic-1.1.12/work/ZMusic-1.1.12/thirdparty/adlmidi/chips/nuked/nukedopl3.h:88:12: note: a field with different name is defined in another translation unit
   88 |     Bit32u pg_reset;
      |            ^
/var/tmp/portage/media-libs/zmusic-1.1.12/work/ZMusic-1.1.12/thirdparty/adlmidi/chips/nuked/nukedopl3_174.h:93:8: error: type ‘struct _opl3_channel’ violates the C++ One Definition Rule [-Werror=odr]
   93 | struct _opl3_channel {
      |        ^
/var/tmp/portage/media-libs/zmusic-1.1.12/work/ZMusic-1.1.12/thirdparty/adlmidi/chips/nuked/nukedopl3.h:100:8: note: a different type is defined in another translation unit
  100 | struct _opl3_channel {
      |        ^
/var/tmp/portage/media-libs/zmusic-1.1.12/work/ZMusic-1.1.12/thirdparty/adlmidi/chips/nuked/nukedopl3.h:114:11: note: the first difference of corresponding definitions is field ‘ch_num’
  114 |     Bit8u ch_num;
      |           ^
/var/tmp/portage/media-libs/zmusic-1.1.12/work/ZMusic-1.1.12/thirdparty/adlmidi/chips/nuked/nukedopl3.h:100:8: note: a type with different number of fields is defined in another translation unit
  100 | struct _opl3_channel {
      |        ^
/var/tmp/portage/media-libs/zmusic-1.1.12/work/ZMusic-1.1.12/thirdparty/adlmidi/chips/nuked/nukedopl3_174.h:115:8: error: type ‘struct _opl3_chip’ violates the C++ One Definition Rule [-Werror=odr]
  115 | struct _opl3_chip {
      |        ^
/var/tmp/portage/media-libs/zmusic-1.1.12/work/ZMusic-1.1.12/thirdparty/adlmidi/chips/nuked/nukedopl3.h:123:8: note: a different type is defined in another translation unit
  123 | struct _opl3_chip {
      |        ^
/var/tmp/portage/media-libs/zmusic-1.1.12/work/ZMusic-1.1.12/thirdparty/adlmidi/chips/nuked/nukedopl3_174.h:117:15: note: the first difference of corresponding definitions is field ‘chipslot’
  117 |     opl3_slot chipslot[36];
      |               ^
/var/tmp/portage/media-libs/zmusic-1.1.12/work/ZMusic-1.1.12/thirdparty/adlmidi/chips/nuked/nukedopl3.h:125:15: note: a field with different name is defined in another translation unit
  125 |     opl3_slot slot[36];
      |               ^
lto1: some warnings being treated as errors
lto-wrapper: fatal error: /usr/bin/x86_64-pc-linux-gnu-g++ returned 1 exit status
compilation terminated.
/usr/lib/gcc/x86_64-pc-linux-gnu/13/../../../../x86_64-pc-linux-gnu/bin/ld: error: lto-wrapper failed
collect2: error: ld returned 1 exit status

Downstream report: https://bugs.gentoo.org/860117 Full build log: build.log

eli-schwartz commented 4 months ago

Note: the original gentoo bug was for zmusic 1.1.4, but I locally tested updating to 1.1.12 and it still manifested.

Gentoo has not updated to 1.1.12 and I don't plan to submit the version bump I tried because it is not packageable quality -- the version update started to bundle a bunch more system libraries which I would have to disentangle first. It was okay for a reproducer.

coelckers commented 4 months ago

You have to build with less strict error settings. ZMusic contains several third party modules which may clash. This is something we won't change because the resulting problems will be far, far worse.