undefined reference to symbol 'dlclose@@GLIBC_2.2.5'

[Nico Schlömer]

I try to compile mixxx master on Ubuntu 18.10 using just
```
scons
```
After about 20 mins of compiling, I get the error
```
[...]
g++ -o lin64_build/mixxx -Wl,-rpath,/usr/lib/x86_64-linux-gnu -L/usr/lib/x86_64-linux-gnu -pthread -Wl,-rpath=/usr/lib/x86_64-linux-gnu lin64_build/res/qrc_mixxx.o lin64_build/src/main.o -Llin64_build/lib/soundtouch -Llib/soundtouch -Llin64_build/lib/vamp -Llib/vamp lin64_build/libmixxx.a -lX11 -lportaudio -lasound -lm -lporttime -lportmidi -lQt5Concurrent -lQt5Network -lQt5OpenGL -lQt5Script -lQt5ScriptTools -lQt5Sql -lQt5Svg -lQt5Test -lQt5Widgets -lQt5Gui -lQt5Xml -lQt5DBus -lQt5Core -lsndfile -lFLAC -lvorbisfile -lvorbis -logg -lvorbisenc -lGL -lGLU -ltag -lprotobuf-lite -lchromaprint -lrubberband -lmp3lame -lmad -lid3tag -lpthread -lrt -lusb-1.0 -lusb-1.0 -lshout -lopusfile -lopus -ldl -lfftw3 -lsqlite3 -llilv-0 -lupower-glib -lgobject-2.0 -lglib-2.0 -lsoundtouch -lvamp-hostsdk
/usr/bin/ld: lin64_build/lib/vamp/libvamp-hostsdk.a(Files.o): undefined reference to symbol 'dlclose@@GLIBC_2.2.5'
```
Any hints?

[Be (be.ing)]

Which version of Mixxx were you compiling? The master branch?

[Nico Schlömer (nschloe)]

Yes, the master branch.

[Be (be.ing)]

Recent changes to the build system in the master branch:
https://github.com/mixxxdj/mixxx/pull/1835
https://github.com/mixxxdj/mixxx/pull/1841

[Adam Szmigin (smidge)]

I also experience this same bug on master when compiling on Linux Mint 18.3 (which is based on Ubuntu 16.04 LTS).

A very quick grep shows that libmixxxminimal.so is the only file that contains these symbols (dlclose@@GLIBC2.2.5), but it isn't mentioned anywhere else in a build log, and I haven't looked any further.

The 2.2 branch builds without issue, and as I only need 2.2 for the time being, this was an appropriate workaround for me.

[Nino MP (ninomp)]

I am also using Linux Mint 18.3 and I am also experiencing this bug. I tried solving it with https://github.com/mixxxdj/mixxx/pull/1926, but this is causing double -ldl in LIBS variable. :-/

[Stefan (nopeppermint)]

I have the same Problem on Linux Mint 19 x64

[Stefan (nopeppermint)]

I found some missing dependencies:
https://mixxx.org/wiki/doku.php/compiling_on_linux was not complete
for current master branch the following packages were not mentioned:
- libvamp-sdk2v5
- libhidapi-libusb0

I just edited the wiki

but I still get the same errors..
but 2.2 builds fine..

[Balaam's Miracle (balaam-balaamsmiracle)]

I came here to find a solution to this issue, then saw that a fix was committed 3 hours prior.

I pulled the latest code from git and Mixxx is successfully linked now on my end. Help=> About reports "2.3.0-alpha-pre (build master r6669)"

Thanks for the fix, I hope that others will report similar results.

[Swiftb0y (swiftb0y)]

Mixxx now uses GitHub for bug tracking. This bug has been migrated to:
https://github.com/mixxxdj/mixxx/issues/9525