| 00:00.37 | kanzure | libopennurbs.a may not be required, i don't know why it's there |
| 00:00.39 | kanzure | 18:29 < ParahSailin> g++ -shared -L. -lopenNURBS opennurbs_*.o -o _opennurbs.so -lGLU -lGL |
| 00:01.40 | kanzure | yeah i don't have a *.a file in my working directory |
| 00:03.27 | raj12lnm | kanzure: so this will require a link library in the ld folder, right ? |
| 00:03.50 | kanzure | opennurbs.so should be in the local directory after building |
| 00:04.02 | kanzure | what is "the ld folder"? |
| 00:08.48 | raj12lnm | kanzure:where the available static libraries are placed. |
| 00:09.48 | kanzure | those files can be kept in the current directory |
| 00:11.01 | raj12lnm | ok |
| 00:14.02 | raj12lnm | kanzure : but I see the following |
| 00:14.10 | raj12lnm | https://www.irccloud.com/pastebin/cLb1upDq |
| 00:14.41 | raj12lnm | and this after running the first two commands |
| 00:14.46 | raj12lnm | https://www.irccloud.com/pastebin/5E4ZGtCW |
| 00:16.05 | raj12lnm | and when I run |
| 00:16.05 | raj12lnm | raj@ubuntu:brlcad-opennurbs$ g++ -shared -L. -lopenNURBS opennurbs_*.o -o _opennurbs.so -lGLU -lGL |
| 00:16.05 | raj12lnm | /usr/bin/ld: cannot find -lopenNURBS |
| 00:16.05 | raj12lnm | collect2: error: ld returned 1 exit status |
| 00:17.15 | raj12lnm | kanzure : I am sure you are able to run the wrapper. But apparently there is some issue on my system which I fail to understand. |
| 00:17.19 | kanzure | is there a libopenNURBS.so in the current directory |
| 00:17.51 | kanzure | _opennurbs.so is something that this process constructs. it's not going to be in there yet. |
| 00:18.17 | raj12lnm | raj@ubuntu:brlcad-opennurbs$ ls libopenNURBS.so |
| 00:18.18 | raj12lnm | ls: cannot access libopenNURBS.so: No such file or directory |
| 00:18.29 | raj12lnm | no it is not there as evident from above. |
| 00:24.49 | raj12lnm | kanzure : I am not sure about the issue! |
| 00:26.41 | kanzure | did you run cmake? |
| 00:28.49 | raj12lnm | kanzure : cmake in brlcad-opennurbs ? |
| 00:28.53 | kanzure | yes |
| 00:30.25 | raj12lnm | kanzure : Aparently I copied openNURBS.so from the brlcad_build to here. |
| 00:31.08 | raj12lnm | kanzure: And then it runs. but this when i import opennurbs in a python shell now Some brlcad core symbols are not available |
| 00:31.32 | raj12lnm | kanzure you mean cmake ~/brlcad ? |
| 00:31.37 | raj12lnm | or just cmake ? |
| 00:32.02 | kanzure | cmake inside the brlcad-opennurbs folder |
| 00:32.15 | kanzure | yes some brlcad symbols will not be available because %ignore in the swig .i file |
| 00:34.14 | raj12lnm | https://www.irccloud.com/pastebin/NEiib9RY |
| 00:34.41 | raj12lnm | kanzure I get the above error |
| 00:35.00 | kanzure | do what it says (reedit CMakeCache.txt appropriately) |
| 00:35.40 | raj12lnm | kanzure. ok |
| 00:36.13 | kanzure | a regular expression can do that pretty fast |
| 00:36.23 | kanzure | anyway why is this a problem if you are already able to import _opennurbs.so into python? |
| 00:40.40 | raj12lnm | kanzure : pasted from python shell |
| 00:40.44 | raj12lnm | https://www.irccloud.com/pastebin/blWSZ6hy |
| 00:43.04 | kanzure | nm _opennurbs.so | grep onmalloc_from_pool |
| 00:43.48 | raj12lnm | yeah I saw that. |
| 00:43.55 | raj12lnm | kanzure even here http://brlcad.org/xref/source/src/other/openNURBS/opennurbs_memory.c#L43 |
| 00:43.58 | kanzure | is it in there? |
| 00:44.01 | kanzure | is it in the so file |
| 00:44.22 | raj12lnm | yes. I get the output |
| 00:44.23 | raj12lnm | U onmalloc_from_pool |
| 00:46.18 | raj12lnm | So it is a unique global symbol. But still cant understand why python shell gives that error. |
| 02:10.44 | kanzure | isn't U for "undefined" |
| 02:10.49 | kanzure | so that would explain it |
| 03:21.49 | raj12lnm | Ok kanzure |
| 03:22.01 | raj12lnm | Do you see a reason why ? |
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| 15:42.59 | kanzure | "even the swig authors hate swig" http://code.activestate.com/lists/python-dev/109281/ |
| 15:47.13 | kanzure | "If I went to implement something like SWIG today, I would almost surely base my implementation on Clang (http://clang.llvm.org/). They have a full C++ parser (carefully hand-crafted, quite admirably keeping a relatively comprehensible code-base for such a task) used in a real compiler front-end, and a flexible library structure aimed at creating tools. There are also Python bindings that would allow to do most of the interesting ... |
| 15:47.19 | kanzure | ... Python-interface-specific work in Python - parse the C++ headers using Clang's existing parser into ASTs - then generate ctypes / extensions from that, *in Python*." |
| 15:57.22 | kanzure | http://eli.thegreenplace.net/2011/07/03/parsing-c-in-python-with-clang/ (url is lying, it's c++ not c) |
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| 17:33.10 | raj12lnm | kanzure have you heard about sip ? |
| 17:33.16 | raj12lnm | looks reasonable to me. |
| 17:33.28 | raj12lnm | kanzure : http://pyqt.sourceforge.net/Docs/sip4/index.html |
| 17:38.36 | kanzure | no |
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