258 lines
5.7 KiB
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258 lines
5.7 KiB
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>Acquisition/Compilation of GRASS Source Code</TITLE
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CLASS="APPENDIX"
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><A
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NAME="COMPILING"
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>C. Acquisition/Compilation of GRASS Source Code</A
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></H1
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><P
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> The GRASS binaries for Linux tend to work. Why would anyone want to mess with
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the source code?
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</P
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><P
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> Let's try to answer this with another question: "Why can't I get the
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source code to my GIS, so I can see how it works, and maybe fix some
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things to work the way I like them?" (You probably know the answers
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to this question, at least for many commercial software packages.)
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</P
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><P
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> If you want to
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</P
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><P
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></P
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><OL
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TYPE="1"
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><LI
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><P
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> Add any of the numerous existing alpha and contributed GRASS functions,
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</P
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></LI
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><LI
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><P
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> Understand how a function works (did any programming shortcuts or
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performance enhancements affect the accuracy of a function? Can
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I improve the performance of a function?)
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</P
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></LI
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><LI
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><P
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> Revise or enhance the code (if you do this, please see Appendix D!),
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</P
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></LI
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><LI
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><P
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> Try compiling several tens of megabytes of source code,
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this appendix is for you. Also check Appendix E.
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</P
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></LI
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></OL
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><P
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> First, you need to acquire the source code, and the GRASS Installation
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Guide. You may also want to get the GRASS Programmer's Manual and
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User's Reference Manual. To do this:
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</P
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><TR
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><TD
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><PRE
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CLASS="PROGRAMLISTING"
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>ftp moon.cecer.army.mil
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login: anonymous
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password: your email address
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cd pub/grass/grass4.1/release/source
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get README.4
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get README.5
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image
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mget s4* (or s5*, your choice)
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cd ../../documents
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get installGuide.ps.Z
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cd /manuals/programmer/postscript
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get progman.ps.Z
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cd ../../user/postscript
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get refman.ps.Z
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bye
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</PRE
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></TD
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></TR
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></TABLE
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><P
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> Don't forget this site. There are several tutorials on some of GRASS'
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more advanced programs in the pub/grass/grass4.1/document directory.
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There are two options for source code (I'm only discussing GRASS
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version 4.14 here, though version 4.15 is also available) The
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pub/grass/outgoing directory contains many contributed functions (and
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many other candidates for enhancing your system).
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</P
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><P
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> Follow the README.4 file for installing GRASS version 4.14 (which is
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sometimes called version 4.1.4) source code. Follow the README.5 file
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for installing GRASS version 4.15 (which is sometimes called version
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4.1.5) source code.
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</P
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><P
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> After installing the source code, uncompress and print
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installGuide.ps.Z (or the troff version, if you prefer that and got it
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from a neighboring directory). You might also want to uncompress and
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print refman.ps.Z and progman.ps.Z at the same time. Note that
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progman.ps.Z is called the programmer's manual, but also contains
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valuable information about data formats and directory structures.
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Advanced users may also want to know the GRASS system utilities, even
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if they won't be calling them in code.
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</P
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><P
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> Now, use the GRASS Installation Guide (from installGuide.ps.Z) to
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guide yourself through the installation. The thickness of this
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document may at first be intimidating. However, if you installed
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Linux yourself, you should be ready to tackle a GRASS installation.
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Don't be surprised if a function or two does not compile on your
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system. I have a couple of uncompiled functions on my own Linux
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system. Fortunately, these are functions that I don't use... Some
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day I'll get back to them, fix them, and compile them!?
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</P
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><P
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> Here is a late-breaking addition, on how to install the newly released
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<A
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HREF="http://www.baylor.edu/~grass"
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TARGET="_top"
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><I
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CLASS="CITETITLE"
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>GRASS 4.2</I
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></A
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>
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from
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<A
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HREF="http://www.baylor.edu"
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TARGET="_top"
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><I
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CLASS="CITETITLE"
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>Baylor University</I
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></A
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>
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This text is as provided by Baylor, unedited by myself due to its release only a few
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days ago. Please note the similarity with other installations..
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</P
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