1 ## Identifying your system ##
3 We'll assume you're using either Mac OS X, or Windows, or Linux.
5 If you're using **Mac OS X**, take note of what version of the Mac OS you're
6 running. (Under the Apple Menu, select "About this Mac".)
11 * Mountain Lion (10.8)
15 If you're running **iOS**, you probably can't use this software on that machine. (A bit more below.)
17 Furthermore, Mac users will be in one of two subgroups:
19 * You'll have Apple's Xcode and the independent MacPorts system
20 installed. (Probably you don't. If you don't know what I'm talking about, you don't have these.)
21 If you don't have these, but want to try this route, you can read about
22 the MacPorts system at <http://www.macports.org/>.
23 This automates the building of Unix-type software on your Mac; it
24 makes it a lot easier to check for dependencies, use more-recent
25 versions of things, and so on. (Though as it happens, MacPorts only has an older version of
26 our chosen implementation of Scheme.)
28 There are also other package management systems available for the Mac, notably Homebrew and Fink. I only know a little bit about them.
31 <http://developer.apple.com/technologies/tools/xcode.html>. Some
32 versions of this have been available for free, though you do have to
33 register with Apple as an "Apple Developer", which involves accepting a
34 legal agreement with Apple. I have an older version of this installed.
35 If you download a recent version, email me and let me know how the
36 process works so I can tell others. There are instructions about how to
37 get Xcode in the MacPorts installation guide.
39 The latest version of Xcode to work with Leopard is 3.14; more recent versions (>= 3.2) require Snow Leopard.
40 3.2.6 is last version that can be downloaded for free by users of 10.6 / Snow Leopard. (But if they pay, they can use up to Xcode 4.2.)
41 Xcode 4.1 was free to all users of 10.7 / Lion. Is Xcode 4.6.x still available for free? Are Xcode 5.x and/or 6.x available for free?
44 * Or you won't have those installed. (**Most Mac users will be in this group.**)
45 Then you'll need pre-packaged (and usually pretty GUI) installers for
46 everything. These are great when they're available and kept up-to-date;
47 however sometimes those conditions aren't met.
51 If you're using **Windows**, you'll be in one of two subgroups:
53 * You'll have the Cygwin system
54 <http://www.cygwin.com/> installed.
55 This puts a Unix-like layer on top of your Windows system,
56 and makes it easier for you to use the same software everybody
57 else will be using, without its needing as much special-for-Windows
58 treatment. However, many of you won't have this installed.
60 * You won't have Cygwin installed. (**Most Windows users will be in this group.**)
61 You might in theory have a different group of compilers installed
62 (MinGW, or Microsoft Visual C++) but we'll assume that the overwhelming
63 majority of users in this group don't have access to a compiler and
64 need pre-packaged installers for everything.
67 If you're using **Linux**, you could be using any one of numerous packaging
70 * We'll give examples using the packaging system shared by Debian and Ubuntu,
71 and we'll assume that those of you using different packaging systems will know
72 how to make the relevant substitutions. You may also want to take note of the
73 output of the "uname -srm" command. On my machine this tells me "Linux
74 3.12.8-extrastuff x86\_64". That tells me I'm running the x86\_64 (as opposed to the
75 i686 or i386 or whatever) version of Linux, and that I'm running kernel
79 **For all of these groups**, a general item to take note of is what "processor architecture" your machine is running. Three of the possibilities are:
81 * One of Intel's i386, i486, i586, i686 architectures. These are collectively known as "x86" or "IA-32" or sometimes just "32-bit".
82 * Intel or AMD's x86\_64 architecture. This is sometimes also called "x64" or "amd64" or "IA-64" or sometimes just "64-bit".
83 * ARM or some other architecture. These are generally lower-powered machines, like iPads. Some of the software we're proposing *might* in principle be capable of running on such machines, but installers don't seem to be available. We'll assume you have access to an x86 or x86\_64 machine.
85 In the Linux example above, I could tell my machine is running x86 because the
86 result of the `uname` command said "i386" at the end. Another machine I have
87 says "x86\_64" at the end. On a Mac, you can also say `uname -m` in a Terminal
88 session, and it will say something like "i386". I think that Mac OS Xs from Lion
89 / 10.7 forward have all been x86\_64-only. On Windows, I don't know how to
90 collect this information. But generally, machines running Windows XP will
91 probably be i386/32-bit (unless it's a version of Windows with "64-bit" or
92 "x64" in its title); machines running Windows Vista or Windows 7 or Windows 8
93 could be running either x86/32-bit or x64/64-bit.
95 [this Microsoft page](http://windows.microsoft.com/en-us/windows/32-bit-and-64-bit-windows)
99 ## PLEASE REPORT PROBLEMS (AND SOLUTIONS!) ##
101 We haven't tested these instructions ourselves, and they're not explicit
102 step-by-step instructions in any case. If you encounter troubles, please email
103 to let us know so that we can amend the instructions to help others. If you
104 figure out how to fix the problem youself (and please do), please also write
105 with suggestions how we can change these instructions to make the process
106 easier and more straightforward for others.
111 **Scheme** is one of two or three major dialects of *Lisp*, which is a large family
112 of programming languages. The other dialects are called "Common Lisp" and "Clojure".
113 Scheme is the more clean and minimalist dialect, and is what's mostly used in
115 Scheme itself has umpteen different "implementations", which share most of
116 their fundamentals, but have slightly different extensions and interact with
117 the operating system differently. One major implementation is called Racket,
118 and that is what we recommend you use. (A few years back they were called PLT Scheme, but then
119 they changed their name to Racket.)
120 If you're already using or comfortable with
121 another Scheme implementation, though, there's no compelling reason to switch.
123 If for some reason you have problems with Racket, other implementations you could
125 [Chicken](http://www.call-cc.org),
126 [Gauche](http://practical-scheme.net/gauche),
127 or [Chibi](https://code.google.com/p/chibi-scheme). The later in that list you go, the more likely it
128 is that you'll have to compile the software yourself. (Thus Mac users will need Xcode.)
130 Racket stands to Scheme in something like the relation Firefox stands to HTML. It's one program among others for working with the language; and many of those programs (or web browsers) permit different extensions, have small variations, and so on.
132 Racket has several components. The two most visible components for us are a command-line interpreter named "racket" and a teaching-friendly editor/front-end named "DrRacket". You will probably be working primarily or wholly in the latter.
133 <!-- "racket" used to be mzscheme, "DrRacket" used to be DrScheme -->
135 The current version of Racket is 6.1.1 (released November 2014).
137 * In your web browser:
139 There is a (slow, bare-bones) version of Scheme available for online use at <http://tryscheme.sourceforge.net/>.
141 * **To install in Windows**
143 Go to <http://racket-lang.org/download/>. Download and install the "Windows x64" version. (Or the "Windows x86" verson if you have an older, 32-bit system.)
145 * **To install on Mac without MacPorts**
147 Go to <http://racket-lang.org/download/>. Download and install the option for your system, most likely "Macintosh
148 OS X (Intel 64-bit)".
150 * **To install on Mac with MacPorts**
152 Unfortunately, MacPorts doesn't have Racket itself available. It only has an older version from when they still called
153 themselves PLT Scheme. And even then, it only has the command-line program "mzscheme" (what's nowadays called "racket"); it
154 doesn't have the GUI program that corresponds to what's now called "DrRacket". You can install mzscheme by opening a Terminal
157 sudo port install mzscheme
159 If you want the GUI components, I think you'll need to use the
160 "Mac/without MacPorts" installation options above.
162 I recommend also typing:
164 sudo port install rlwrap
166 then if you ever use the command-line program `mzscheme` (or `racket`), you should start it by typing `rlwrap mzscheme`. This gives
167 you a nice history of the commands you've already typed, which you can scroll up and down in with your
170 * **To install on Linux**
172 Use your packaging system, for example, open a Terminal and
175 sudo apt-get install racket
177 It's very likely that your packaging system has some version of
178 Racket available, so look for it. However, if you can't find it you
179 can also install a pre-packaged binary from the Racket website at <http://racket-lang.org/download/>.
180 Choose the option for your version of Linux (Ubuntu and Debian are available).
182 As above, I recommend you also type:
186 then if you ever use the command-line program `mzscheme` (or `racket`), you should start it by typing `rlwrap mzscheme`. This gives
187 you a nice history of the commands you've already typed, which you can scroll up and down in with your
193 **Caml** is one of two major dialects of *ML*, which is another large family of
194 programming languages. The other dialect is called "SML" and has several
195 implementations. But Caml has only one active implementation, OCaml or
196 Objective Caml, developed by the INRIA academic group in France.
197 Sometimes we may refer to Caml or ML
198 more generally; but you can assume that what we're talking about always works more
199 specifically in OCaml.
201 It's helpful if in addition to OCaml you also install the Findlib add-on.
202 This will make it easier to install additional add-ons further down the road.
203 However, if you're not able to get that working, don't worry about it much.
205 The current version of OCaml is 4.02.1 (released October 2014).
207 Another instruction page focuses on [OPAM](http://ocaml.org/docs/install.html), also [this](https://opam.ocaml.org).
209 * In your web browser:
211 There is a (slow, bare-bones) version of OCaml available for online use at <http://try.ocamlpro.com/>.
213 * **To install in Windows**
215 Go to <http://caml.inria.fr/download.en.html>.
216 You can probably download and install the
217 "Self installer for the port based on the MinGW toolchain"
218 even if you don't know what MinGW or Cygwin are.
219 Some features of this require Cygwin, but it looks like
220 it should mostly work even for users without Cygwin.
221 At the time of this writing, only an installer for the previous
222 version of OCaml (3.11.0, from January 2010) is available.
224 To install the Findlib add-on, you must have the
225 Cygwin system installed. We assume few of you do,
226 so we're not going to try to explain how to do this.
227 If you want to figure it out yourself, go to the
228 Findlib website at <http://projects.camlcity.org/projects/findlib.html>.
230 * **To install on Mac without MacPorts**
232 To install OCaml 3.12 (just released this summer), go to
233 <http://caml.inria.fr/download.en.html>
234 and download and install the "Binary distribution for Mac OS X"
236 To install the Findlib add-on, you'll need the Xcode development tools
237 to compile it yourself. Once you get that far, it's probably easiest
238 for you to install MacPorts and just install things using the MacPorts
239 instructions. (Use the MacPorts version of OCaml, instead of installing
240 the package from the caml.inria.fr website, as described above)
241 However, if you do have Xcode, and want to do without MacPorts, then
242 what you need to do is download Findlib from
243 <http://download.camlcity.org/download/findlib-1.2.6.tar.gz>.
244 Unpack the download, open a Terminal and go into the folder you just
250 This will build an installer package which you should be able to
251 double-click and install.
253 * **To install on Mac with MacPorts**
255 You can install the previous version of OCaml (3.11.2,
256 from January 2010), together with the Findlib add-on, by opening a Terminal
259 sudo port install ocaml caml-findlib
261 As with Scheme, it's helpful to also have rlwrap installed, and to start OCaml as `rlwrap ocaml`. This gives
262 you a nice history of the commands you've already typed, which you can scroll up and down in with your
265 * [More details about installing OCaml on Macs, if needed](http://cocan.org/getting_started_with_ocaml_on_mac_os_x)
267 * **To install on Linux**
269 Use your packaging system, for example, open a Terminal and
272 sudo apt-get install ocaml ocaml-findlib
274 That will install a version of OCaml and the Findlib add-on.
276 If for some reason you can't get OCaml through your
277 packaging system, you can go to
278 <http://caml.inria.fr/download.en.html>.
279 Pre-packaged binary installers are available for several Linux systems.
281 If you can't get findlib through your packaging system, you'll
282 need to download it from
283 <http://download.camlcity.org/download/findlib-1.2.6.tar.gz>.
284 and use gcc to compile it yourself. If you don't know how to
285 do that, you probably don't want to attempt this.
286 Here are the INSTALL notes:
287 <https://godirepo.camlcity.org/svn/lib-findlib/trunk/INSTALL>.
289 As with Scheme, it's helpful to also have rlwrap installed, and to start OCaml as `rlwrap ocaml`. This gives
290 you a nice history of the commands you've already typed, which you can scroll up and down in with your
294 ## Getting Haskell ##
296 This last step is less crucial than the others, since we will be focusing
297 primarily on Scheme and OCaml. However we, and the readings you come across,
298 will sometimes mention Haskell, so it might be worth your installing this too,
299 so that you have it available to play around with.
301 Haskell is used a lot in the academic contexts we'll be working through. At one point, Scheme
302 dominated these discussions but now Haskell seems to do that.
304 Haskell's surface syntax differs from Caml, and there are various important things one can do in
305 each of Haskell and Caml that one can't (or can't as easily) do in the
306 other. But these languages also have *a lot* in common, and if you're
307 familiar with one of them, it's generally not hard to move between it and the
310 * In your web browser:
312 There is a (slow, bare-bones) version of Haskell available for online use at <http://tryhaskell.org/>.
314 sudo apk-get install haskell-platform
316 <https://github.com/pittsburgh-haskell/haskell-installation>
318 <https://www.haskell.org/platform>
320 Getting started: <https://wiki.haskell.org/Haskell_in_5_steps>