problem with running server

[hjanetzek]

do you have a guess what might cause this error? node-mapnik tests ran successfully. I've added 'ldflags': ['-zdefs'], to bindings.gyp target and it shows that
vector_server.cpp:(.text+0xdf): undefined reference to `Map::constructor'
(besides everything else also being undefined references). I'm building on ubuntu 10.04 with default nodejs 0.8 and mapnik master

jeff@city:/home/jeff/src/vector-tile-server% node ./server.js osm_vectors.xml 8000

module.js:485
process.dlopen(filename, module.exports);
^
Error: /home/jeff/src/vector-tile-server/build/Release/node_vector_server.node: undefined symbol: _ZN3Map11constructorE
at Object.Module._extensions..node (module.js:485:11)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:362:17)
at require (module.js:378:17)
at Object. (/home/jeff/src/vector-tile-server/lib/vector_server.js:1:103)
at Module._compile (module.js:449:26)
at Object.Module._extensions..js (module.js:467:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)

[hjanetzek]

http://city.informatik.uni-bremen.de/~jeff/build.log

[springmeyer]

This error is expected if var mapnik = require('mapnik'); does not come before require('./lib/vector_server'); in any script that uses the build/Release/node_vector_server.node module. Did you happen to edit the server.js at all? If not, then something must be messed up with the node-mapnik install. Perhaps you have a different node-mapnik on your NODE_PATH? (look in ~/node_modules/mapnik ?)

[springmeyer]

Ah, I see the problem. try:

export LD_PRELOAD=./node_modules/mapnik/lib/_mapnik.node

[hjanetzek]

indeed that solves it, could you tell me why? :) I was just about to write that this seems to be a really odd issue here, all linking were correct, the searched symbol existed in libmapnik.so, the right .so file was in the process, still got that error..

[springmeyer]

Yes, it is quite an odd/unique situation. The background is that the C++ bits of this node module are using the headers of another node C++ module (node-mapnik). This is not something I've done before. With a bit of research I should be able to figure out a better way to avoid this than LD_PRELOAD, but it should work in the meantime. Thanks for your understanding :)

[hjanetzek]

thank you, works like a charm now.
btw polygons should be closed implicitly to save some bytes, this is now enabled automatically for the oscim(v2) database with my latest commit to VectorTileMap