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| 2 | <TITLE>Survex Hacker's Guide</TITLE> |
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| 7 | </HEAD><BODY BGCOLOR=white TEXT=black> |
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| 8 | <H1>Hacking Survex</H1> |
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| 9 | |
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| 10 | <p>(That's hacking in the "tinkering with code" sense, not in the |
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| 11 | "breaking into other people's computer systems" sense). |
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| 12 | |
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| 13 | <p>This is currently a random collection of notes that need to be written |
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| 14 | down while I remember. With time it should evolve into a more |
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| 15 | coherent document. If you have any questions which this should answer |
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| 16 | but doesn't then ask me and I'll add them. |
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| 17 | |
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| 18 | <H2>Network code debugging</H2> |
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| 19 | |
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| 20 | <P>You can pick which network simplifications are attempted using "-z" |
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| 21 | with an argument listing code letters. So: |
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| 22 | |
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| 23 | <ul> |
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| 24 | <li>-z= no special simplifications (articulation still performed) |
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| 25 | <li>-z=l remove "lollipops" |
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| 26 | <li>-z=p remove parallel legs |
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| 27 | <li>-z=d convert deltas to stars |
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| 28 | </ul> |
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| 29 | |
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| 30 | <P>And you can combine these in any combination: |
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| 31 | |
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| 32 | <ul> |
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| 33 | <li>-z=lp remove "lollipops" and parallel legs |
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| 34 | <li>-z=lpd remove "lollipops" and parallel legs; convert deltas to stars |
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| 35 | </ul> |
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| 36 | |
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| 37 | <P>"-z=lpd" is the default (in 0.99 at least - more transformations may |
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| 38 | conceivably be added in future, although the simple common cases are |
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| 39 | already covered). |
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| 40 | |
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| 41 | <H2>Developing on Unix Platforms</H2> |
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| 42 | |
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| 43 | <P>You'll need automake 1.5 or later (earlier versions don't support |
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| 44 | per-executable CFLAGS; 1.6 has been tested and works, but wasn't a |
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| 45 | very stable release - automake 1.6.1 is a better bet) |
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| 46 | and autoconf 2.50 or later (autoconf 2.52 and 2.53 have |
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| 47 | both been used successfully). |
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| 48 | |
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| 49 | <P>For building the documentation you'll need sgmltools 2 or later, |
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| 50 | docbook-to-man, and w3m. |
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| 51 | |
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| 52 | <H2>Building on Non-Unix Platforms</H2> |
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| 53 | |
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| 54 | <H3>Mingw (Microsoft Windows)</H3> |
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| 55 | |
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| 56 | <P>Currently I build this with a Linux hosted cross-compiler. I use |
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| 57 | the packaged cross-compiler in the debian testing/unstable distribution. |
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| 58 | You can probably install these on other distributions using alien to |
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| 59 | convert them to RPMs or similar. Alternatively, before that |
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| 60 | I used to use pre-built binaries for gcc 2.95.2 obtained from: |
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| 61 | |
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| 62 | <P><A HREF="http://www.libsdl.org/extras/win32/cross/" |
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| 63 | >http://www.libsdl.org/extras/win32/cross/</A> |
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| 64 | |
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| 65 | <P>Building on Windows in a native mingw environment will probably |
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| 66 | require tinkering. Best bet is probably to install bash and use the |
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| 67 | current configure script. I'm happy to help if you want to try this, |
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| 68 | and I'll incorporate patches provided they're fairly clean. |
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| 69 | |
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| 70 | <P>Building on Windows with MSVC/BorlandC/Watcom/... is likely to be more |
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| 71 | work, but could be a worthwhile project. I'd suggest patching the |
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| 72 | perl script miniam.pl to generate a suitable makefile. Again, send |
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| 73 | patches if you get this to work. |
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| 74 | |
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| 75 | </BODY></HTML> |
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