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1 An obsolete version of Octave (2.1.73) is part of the normal net |
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2 distribution of Cygwin, available from http://www.cygwin.com. Check |
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3 the package list in Cygwin's setup.exe installer if you would like to |
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4 try using it. However, 2.1.73 is unsupported and we STRONGLY |
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5 recommended that you use a more recent version of Octave. |
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6 |
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7 It should be possible to build Octave on Windows systems with Cygwin, |
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8 but at the time of this writing, there are some performance problems |
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9 related to the way C++ exception handling is implemented with the |
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10 default Cygwin compiler. This is a known problem with a long history. |
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11 If you would like to see this problem corrected, please search the |
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12 Cygwin mailing lists for threads related to "sjlj exception handling" |
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13 (or similar). |
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14 |
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15 There are also two "unofficial" Octave distributions for Cygwin: |
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16 |
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17 1. http://www.geocities.jp/tmacchant |
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18 |
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19 The binaries here are built using gcc-3.4.4-3 configured with |
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20 --disable-sjlj-exceptions. Performance is improved by using DWARF |
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21 exception handling instead of setjump/longjump exception |
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22 handling. However, to build dynamically loaded .oct files that |
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23 will work with this version of Octave, you must use the same |
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24 specially configured version of GCC that was used to build Octave |
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25 itself and not the version of GCC that is distributed with |
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26 Cygwin. |
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27 |
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28 This binary is maintained by Tatsuro Matsuroka. |
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29 |
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30 |
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31 2. http://matzeri.altervista.org |
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32 |
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33 The binaries here aim to be an officail cygwin distribution of |
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34 Octave-3.0.x and are built using the version of GCC distributed |
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35 with Cygwin. Performance of linear algebra functions is fine, but |
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36 the performance of the scripting language interpreter suffers |
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37 because of the setjump/longjump exception handling model used in |
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38 the version of GCC distributed with Cygwin. The advantage is that |
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39 you don't need a special version of GCC. |
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40 |
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41 This binary is maintained by Marco Atzeri |
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42 |
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43 We hope that Cygwin will eventually have a version of GCC that does |
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44 not suffer from the performance problem related to setjump/longjump |
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45 exception handling. |
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46 |
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47 |
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48 John W. Eaton |
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49 jwe@bevo.che.wisc.edu |
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50 University of Wisconsin-Madison |
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51 Department of Chemical & Biological Engineering |
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52 |
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53 Tatsuro MATSUOKA |
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54 tmacchant@yahoo.co.jp |
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55 Department of Molecular Design and Engineering, |
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56 Gradudate School of Engineering, Nagoya University. |
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57 |
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58 Last updated: Thu, 03 Apr 2008 22:01:48 EDT |
