From 72c578fd4b0b4a5a43e18594339ac4ff26c376dc Mon Sep 17 00:00:00 2001 From: Luca Falavigna Date: Sat, 2 Jan 2010 20:56:27 +0100 Subject: Imported Upstream version 1.2.0.d20091224 --- doc/user/install.xml | 237 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 237 insertions(+) create mode 100644 doc/user/install.xml (limited to 'doc/user/install.xml') diff --git a/doc/user/install.xml b/doc/user/install.xml new file mode 100644 index 0000000..e011986 --- /dev/null +++ b/doc/user/install.xml @@ -0,0 +1,237 @@ + + + + + Once a program is built, + it is often appropriate to install it in another + directory for public use. + You use the &Install; method + to arrange for a program, or any other file, + to be copied into a destination directory: + + + + + env = Environment() + hello = env.Program('hello.c') + env.Install('/usr/bin', hello) + + + + + Note, however, that installing a file is + still considered a type of file "build." + This is important when you remember that + the default behavior of &SCons; is + to build files in or below the current directory. + If, as in the example above, + you are installing files in a directory + outside of the top-level &SConstruct; file's directory tree, + you must specify that directory + (or a higher directory, such as /) + for it to install anything there: + + + + + % scons -Q + cc -o hello.o -c hello.c + cc -o hello hello.o + % scons -Q /usr/bin + Install file: "hello" as "/usr/bin/hello" + + + + + It can, however, be cumbersome to remember + (and type) the specific destination directory + in which the program (or any other file) + should be installed. + This is an area where the &Alias; + function comes in handy, + allowing you, for example, + to create a pseudo-target named install + that can expand to the specified destination directory: + + + + + env = Environment() + hello = env.Program('hello.c') + env.Install('/usr/bin', hello) + env.Alias('install', '/usr/bin') + + + + + This then yields the more natural + ability to install the program + in its destination as follows: + + + + + % scons -Q + cc -o hello.o -c hello.c + cc -o hello hello.o + % scons -Q install + Install file: "hello" as "/usr/bin/hello" + + +
+ Installing Multiple Files in a Directory + + + + You can install multiple files into a directory + simply by calling the &Install; function multiple times: + + + + + env = Environment() + hello = env.Program('hello.c') + goodbye = env.Program('goodbye.c') + env.Install('/usr/bin', hello) + env.Install('/usr/bin', goodbye) + env.Alias('install', '/usr/bin') + + + + + Or, more succinctly, listing the multiple input + files in a list + (just like you can do with any other builder): + + + + + env = Environment() + hello = env.Program('hello.c') + goodbye = env.Program('goodbye.c') + env.Install('/usr/bin', [hello, goodbye]) + env.Alias('install', '/usr/bin') + + + + + Either of these two examples yields: + + + + + % scons -Q install + cc -o goodbye.o -c goodbye.c + cc -o goodbye goodbye.o + Install file: "goodbye" as "/usr/bin/goodbye" + cc -o hello.o -c hello.c + cc -o hello hello.o + Install file: "hello" as "/usr/bin/hello" + + +
+ +
+ Installing a File Under a Different Name + + + + The &Install; method preserves the name + of the file when it is copied into the + destination directory. + If you need to change the name of the file + when you copy it, use the &InstallAs; function: + + + + + env = Environment() + hello = env.Program('hello.c') + env.InstallAs('/usr/bin/hello-new', hello) + env.Alias('install', '/usr/bin') + + + + + This installs the hello + program with the name hello-new + as follows: + + + + + % scons -Q install + cc -o hello.o -c hello.c + cc -o hello hello.o + Install file: "hello" as "/usr/bin/hello-new" + + +
+ +
+ Installing Multiple Files Under Different Names + + + + Lastly, if you have multiple files that all + need to be installed with different file names, + you can either call the &InstallAs; function + multiple times, or as a shorthand, + you can supply same-length lists + for both the target and source arguments: + + + + + env = Environment() + hello = env.Program('hello.c') + goodbye = env.Program('goodbye.c') + env.InstallAs(['/usr/bin/hello-new', + '/usr/bin/goodbye-new'], + [hello, goodbye]) + env.Alias('install', '/usr/bin') + + + + + In this case, the &InstallAs; function + loops through both lists simultaneously, + and copies each source file into its corresponding + target file name: + + + + + % scons -Q install + cc -o goodbye.o -c goodbye.c + cc -o goodbye goodbye.o + Install file: "goodbye" as "/usr/bin/goodbye-new" + cc -o hello.o -c hello.c + cc -o hello hello.o + Install file: "hello" as "/usr/bin/hello-new" + + +
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