| === doko_ is now known as doko | ||
| fsateler | I'm having a problem with ubuntu bug 719206, that I've tracked down to the -as-needed flag | 21:06 |
|---|---|---|
| fsateler | however, this same bug does not appear on debian, even though the package is exactly the same | 21:06 |
| fsateler | (ie, the -as-needed flag is passed in debian too) | 21:06 |
| doko | no, --as-needed is not passed in debian | 21:07 |
| fsateler | but my build system does | 21:07 |
| fsateler | explicitly, that is | 21:07 |
| doko | dpkg -S CsoundAC.py ? | 21:08 |
| doko | is this csound? | 21:08 |
| fsateler | yes | 21:08 |
| fsateler | python-csoundac | 21:08 |
| fsateler | it is missing the link to libCsoundAC.so.5.2 | 21:09 |
| doko | x86_64-linux-gnu-g++ -o _CsoundAC.so -Wl,-as-needed -Wl,-Bdynamic -Wl,-rpath-link,interfaces -shared frontends/CsoundAC/CsoundAC_wrap.os -L/usr/local/lib -L/usr/lib -L/usr/lib/python2.7/config -L. -L. -L/usr/local/lib -L. -L. -L. -lCsoundAC -lcsnd -lfltk_images -lpython2.7 -lcsnd -lstdc++ -lutil libcsound64.so.5.2 -lsndfile -lsndfile -lpthread -lpthread -lgomp -lm -lasound -llo -lsndfile -ldl -lm -lpthread | 21:13 |
| doko | what does happen if you move libcsound64.so.5.2 before -lCsoundAC ? | 21:14 |
| fsateler | doesn't work | 21:15 |
| fsateler | (I'm doing this in a natty chroot, btw) | 21:16 |
| doko | _ZTIN6csound4NodeE is defined in -lCsoundAC ? | 21:19 |
| fsateler | yes | 21:19 |
| fsateler | it is a type defined there | 21:19 |
| doko | supposed to be export from which lib? | 21:22 |
| fsateler | libCsoundAC.so.5.2 | 21:23 |
| fsateler | built by the same source package | 21:23 |
| doko | no, it's not exported | 21:24 |
| doko | $ objdump -T /usr/lib/libcsnd.so.5.2|fgrep _ZTIN6csound4NodeE | 21:25 |
| doko | $ objdump -T /usr/lib/libcsound64.so.5.2|fgrep _ZTIN6csound4NodeE | 21:25 |
| doko | that seems to be the cause, now you would have to find out why it's missing | 21:25 |
| fsateler | objdump -T libCsoundAC.so.5.2 | fgrep _ZTIN6csound4NodeE | 21:26 |
| fsateler | indeed, the Ubuntu version is not exporting it, but the debian version is | 21:26 |
| doko | please try to rebuild with gcc defaulting to gcc-4.5 in debian unstable | 21:42 |
| fsateler | that means installing gcc/g++ from experimental? | 21:44 |
| fsateler | I mean, would doing that take care of it? | 21:44 |
| doko | no, unstable | 21:50 |
| doko | just would like to know if this is seen with g++-4.5 in unstable too | 21:51 |
| fsateler | ok, I'm rebuilding now | 21:52 |
| fsateler | gcc 4.5 from sid seems to work OK | 22:00 |
| doko | so you see the symbol? | 22:01 |
| fsateler | % objdump -T libCsoundAC.so.5.2 | fgrep _ZTIN6csound4NodeE | 22:01 |
| fsateler | 00000000002d10a0 w DO .data.rel.ro0000000000000010 Base _ZTIN6csound4NodeE | 22:01 |
| doko | and just to make sure, that g++ --version is 4.5.2? | 22:03 |
| fsateler | I set CC and CXX to g{cc,++}-4.5, both at 4.5.2 | 22:04 |
| doko | ahh, ok | 22:04 |
| fsateler | is there another flag enabled by default in ubuntu that may cause this problem? | 22:05 |
| fsateler | maybe -fvisibility=hidden? | 22:06 |
| doko | hardening | 22:06 |
| doko | no | 22:06 |
| fsateler | because the only symbols that are showing up seem to be ones that have the visibility attribute set | 22:06 |
| doko | --no-add-needed is in unstable too | 22:06 |
| doko | maybe check with unstable's binutils installed in natty, but I doubt it | 22:07 |
| fsateler | nope, doesn't help | 22:11 |
| doko | sorry, then I currently don't know | 22:15 |
| doko | we'll drop --as-needed for the natty release, and re-enable it for the o-series. not sure if it would help, because you already use --as-needed explicitly | 22:16 |
| fsateler | the problem seems to be a nearly devoid of useful content libCsoundAC | 22:18 |
| fsateler | @natty:csound-5.13.0~dfsg% objdump -T libCsoundAC.so | wc -l | 22:19 |
| fsateler | 471 | 22:19 |
| fsateler | @debian:csound% objdump -T libCsoundAC.so | wc -l | 22:20 |
| fsateler | 1669 | 22:20 |
| fsateler | hmm, it seems it is not a problem with the toolchain: on Ubuntu, for some reason CsoundAC is built with -fvisibility=hidden but in debian its not | 22:28 |
| fsateler | thanks for your help | 22:29 |
| doko | hmm, please drop a note here if you find out why | 22:31 |
| fsateler | fyi, it seems it is a problem with scons. Installing the debian version of scons fixed the issue | 23:02 |
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