Hi all, Remember this problem with dlopen and openblas <https://groups.google.com/forum/#!topic/julia-users/A8HwlmldVTM>? That problem was resolved by modifying how embedded Julia loads (perhaps only on OS/X).Well now there is a similar problem on Linux. Same software. The exact problem is different because the dynamic linkers are different. It appears to me from LD_DEBUG that symbols in libjulia.so are not being resolved correctly when sys.so is initialized. Much of the functionality is missing, but for example tuple() still works... The relevant debug information is:
18788: find library=libjulia.so [0]; searching 18788: search path=/usr/local/julia-aa5ffc6ac6/lib/julia/tls/x86_64: /usr/local/julia-aa5ffc6ac6/lib/julia/tls:/usr/local/julia-aa5ffc6ac6/lib/ julia/x86_64:/usr/local/julia-aa5ffc6ac6/lib/julia (RPATH from file /home/jeffw/src/nj-test2/node_modules/node-julia/build/Release/nj.node) 18788: trying file=/usr/local/julia-aa5ffc6ac6/lib/julia/tls/x86_64/ libjulia.so 18788: trying file=/usr/local/julia-aa5ffc6ac6/lib/julia/tls/libjulia. so 18788: trying file=/usr/local/julia-aa5ffc6ac6/lib/julia/x86_64/ libjulia.so 18788: trying file=/usr/local/julia-aa5ffc6ac6/lib/julia/libjulia.so Followed by: 18788: calling init: /usr/local/julia-aa5ffc6ac6/lib/julia/libjulia.so Which returns with no errors Then when calling init on my .so, the following happens 18788: /usr/local/julia-aa5ffc6ac6/lib/../lib/julia/sys.so: error: symbol lookup error: undefined symbol: jl_diverror_exception (fatal) 18788: node: error: symbol lookup error: undefined symbol: jl_ast_rettype ( fatal) 18788: node: error: symbol lookup error: undefined symbol: jl_prepare_ast (fatal) 18788: node: error: symbol lookup error: undefined symbol: jl_alloc_array_1d (fatal) 18788: node: error: symbol lookup error: undefined symbol: jl_alloc_array_1d (fatal) 18788: node: error: symbol lookup error: undefined symbol: jl_alloc_array_1d (fatal) 18788: node: error: symbol lookup error: undefined symbol: jl_alloc_array_1d (fatal) followed by about 50 more unresolved symbols... But those symbols are in libjulia.so, The effect of this is later on is the following exception Error: Julia ccall: could not find function jl_prepare_ast Here's the output of ldd of the .so library . In linux @rpath is $ORIGIN, and I don't see that here, so maybe that's the culprit, or maybe a red herring linux-vdso.so.1 => (0x00007fff765d9000) libjulia.so => /usr/local/julia-aa5ffc6ac6/lib/julia/libjulia.so ( 0x00007f89c4cd1000) libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6 ( 0x00007f89c49c3000) libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f89c47ac000) libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f89c458f000 ) libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f89c41cf000) librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f89c3fc6000) libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f89c3dc2000) libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f89c3bab000) libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f89c38ae000) /lib64/ld-linux-x86-64.so.2 (0x00007f89c5fb1000)
