On Tue, Dec 08, 2009 at 04:59:40PM +0100, Klaumi Klingsporn wrote:


> "Vamp::HostExt::PluginLoader: Unable to load library
> "/usr/lib/ardour2/vamp/libardourvampplugins.so":
> /usr/lib/ardour2/vamp/libardourvampplugins.so: undefined symbol:
> _ZTIN11_VampPlugin4Vamp17PluginAdapterBaseE

I can reproduce the bug, and it looks like others are facing the same


To me, it looks like this:

a...@hex:~$ objdump -T /usr/lib/ardour2/vamp/libardourvampplugins.so | \
   grep PluginAdapterBaseE
00000000      D  *UND*  00000000 _ZTIN11_VampPlugin4Vamp17PluginAdapterBaseE

So this symbol really is undefined. The lib is linked "correctly":

a...@hex:~$ ldd /usr/lib/ardour2/vamp/libardourvampplugins.so | grep vamp
        libvamp-sdk.so.1 => /usr/lib/libvamp-sdk.so.1 (0xb7eea000)
        libvamp-hostsdk.so.2 => /usr/lib/libvamp-hostsdk.so.2 (0xb7ec3000)

I see a similar symbol in libvamp-sdk:

a...@hex:~$ objdump -T /usr/lib/libvamp-sdk.so.1 | grep AdapterBaseE
000147e4  w   DO .data.rel.ro   00000008  Base _ZTIN4Vamp17PluginAdapterBaseE

I've now managed to build a non-crashing version. Can you try the
attached patch? It basically boils down to removing a single line in
libs/vamp-plugins/SConscript, so you could also "patch" this manually.

With this patch, I'm also getting beautiful FFT graphs. ;)

If this patch does the trick, I'll upload a fixed package.

diff --git a/debian/patches/111_vamp.patch b/debian/patches/111_vamp.patch
new file mode 100644
index 0000000..1cb25cb
--- /dev/null
+++ b/debian/patches/111_vamp.patch
@@ -0,0 +1,12 @@
+diff --git a/libs/vamp-plugins/SConscript b/libs/vamp-plugins/SConscript
+index fd86c09..055c46d 100644
+--- a/libs/vamp-plugins/SConscript
++++ b/libs/vamp-plugins/SConscript
+@@ -19,7 +19,6 @@ Onset.cpp
+ Import('env install_prefix libraries')
+ vampplugs = env.Clone()
+-vampplugs.Append (CPPATH='#libs/vamp-sdk/vamp', CXXFLAGS="-Ilibs/vamp-sdk")
+ vampplugs.Merge ([libraries['vamp'],
+                   libraries['vamphost']
+                   ])
diff --git a/debian/patches/series b/debian/patches/series
index e4b6bb4..7ba21cb 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -3,3 +3,4 @@
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