VMD-L Mailing List

From: Dominic Hayward (d.hayward_at_fz-juelich.de)
Date: Tue Jan 26 2021 - 04:08:29 CST

Thanks for the quick reply! I've corrected the TNGLDFLAGS variable to
"-ltng_io" but unfortunately, I'm getting the same "undefined reference"
errors as before:

"tngplugin.C:(.text+0x3e): undefined reference to
`tng_frame_set_read_current_only_data_from_block_id'
/usr/bin/ld:
./compile/lib_LINUXAMD64/molfile/libmolfile_plugin.a(tngplugin-s.o): in
function `write_tng_timestep(void*, molfile_timestep_t const*)':
tngplugin.C:(.text+0xe8): undefined reference to
`tng_implicit_num_particles_set'
etc. etc."

It seemed to like the flag (i.e. it didn't give me a "cannot find"
error) but the linkage is still failing. Any ideas what else it might be?

Cheers,

Dominic

On 25/01/2021 20:02, Vermaas, Josh wrote:
> I've done this before. I think it is your TNGLDFLAGS, which should be
> -ltng_io based on what was in plugins/Make-arch for LINUX or LINUXALPHA.
> I don't think it is set in LINUXAMD64 by default, but -shared isn't
> going to cut it. If my hypothesis is correct, your linkage should fail
> with alot of calls to the tng library itself.
>
> -Josh
>
> On 1/25/21 12:46 PM, Dominic Hayward wrote:
>> Hello,
>>
>> I'm currently trying to compile VMD from source with the tngplugin.
>> Without the tng plugin everything compiles smoothly and runs as it
>> should. However, when I include the following environment variables:
>>
>> # location of libtng_io.so
>> TNGLIB="-L/usr/local/lib"
>> # location of tng/tng_io.h
>> TNGINC="-I/usr/local/include"
>> TNGLDFLAGS="-shared"
>>
>> the plugin fails to compile, with a heap of "undefined reference"
>> errors. If anyone could point me in the general direction of where I'm
>> going wrong, that would be much appreciated!
>>
>> Thanks in advance,
>>
>> Dominic
>>
>>
>>
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