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diff --git a/doc/user/install.in b/doc/user/install.in new file mode 100644 index 0000000..a263f65 --- /dev/null +++ b/doc/user/install.in @@ -0,0 +1,240 @@ +<!-- + + Copyright (c) 2001, 2002, 2003 Steven Knight + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice shall be included + in all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY + KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE + WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +--> + + <para> + + 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: + + </para> + + <scons_example name="ex1"> + <file name="SConstruct" printme="1"> + env = Environment() + hello = env.Program('hello.c') + env.Install('__ROOT__/usr/bin', hello) + </file> + <file name="hello.c"> + int main() { printf("Hello, world!\n"); } + </file> + </scons_example> + + <para> + + 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 <literal>/</literal>) + for it to install anything there: + + </para> + + <scons_output example="ex1"> + <command>scons</command> + <command>scons __ROOT__/usr/bin</command> + </scons_output> + + <para> + + 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 <literal>install</literal> + that can expand to the specified destination directory: + + </para> + + <scons_example name="ex2"> + <file name="SConstruct" printme="1"> + env = Environment() + hello = env.Program('hello.c') + env.Install('__ROOT__/usr/bin', hello) + env.Alias('install', '__ROOT__/usr/bin') + </file> + <file name="hello.c"> + int main() { printf("Hello, world!\n"); } + </file> + </scons_example> + + <para> + + This then yields the more natural + ability to install the program + in its destination as follows: + + </para> + + <scons_output example="ex1"> + <command>scons</command> + <command>scons install</command> + </scons_output> + + <section> + <title>Installing Multiple Files in a Directory</title> + + <para> + + You can install multiple files into a directory + simply by calling the &Install; function multiple times: + + </para> + + <scons_example name="ex3"> + <file name="SConstruct" printme="1"> + env = Environment() + hello = env.Program('hello.c') + goodbye = env.Program('goodbye.c') + env.Install('__ROOT__/usr/bin', hello) + env.Install('__ROOT__/usr/bin', goodbye) + env.Alias('install', '__ROOT__/usr/bin') + </file> + <file name="hello.c"> + int main() { printf("Hello, world!\n"); } + </file> + </scons_example> + + <para> + + Or, more succinctly, listing the multiple input + files in a list + (just like you can do with any other builder): + + </para> + + <sconstruct> + env = Environment() + hello = env.Program('hello.c') + goodbye = env.Program('goodbye.c') + env.Install('__ROOT__/usr/bin', [hello, goodbye]) + env.Alias('install', '__ROOT__/usr/bin') + </sconstruct> + + <para> + + Either of these two examples yields: + + </para> + + <scons_output example="ex3"> + <command>scons install</command> + </scons_output> + + </section> + + <section> + <title>Installing a File Under a Different Name</title> + + <para> + + 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: + + </para> + + <scons_example name="ex4"> + <file name="SConstruct" printme="1"> + env = Environment() + hello = env.Program('hello.c') + env.InstallAs('__ROOT__/usr/bin/hello-new', hello) + env.Alias('install', '__ROOT__/usr/bin') + </file> + <file name="hello.c"> + int main() { printf("Hello, world!\n"); } + </file> + </scons_example> + + <para> + + This installs the <literal>hello</literal> + program with the name <literal>hello-new</literal> + as follows: + + </para> + + <scons_output example="ex4"> + <command>scons install</command> + </scons_output> + + </section> + + <section> + <title>Installing Multiple Files Under Different Names</title> + + <para> + + 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 the both the target and source arguments: + + </para> + + <scons_example name="ex5"> + <file name="SConstruct" printme="1"> + env = Environment() + hello = env.Program('hello.c') + goodbye = env.Program('goodbye.c') + env.InstallAs(['__ROOT__/usr/bin/hello-new', + '__ROOT__/usr/bin/goodbye-new'], + [hello, goodbye]) + </file> + <file name="hello.c"> + int main() { printf("Hello, world!\n"); } + </file> + </scons_example> + + <para> + + In this case, the &InstallAs; function + loops through both lists simultaneously, + and copies each source file into its corresponding + target file name: + + </para> + + <scons_output example="ex5"> + <command>scons install</command> + </scons_output> + + </section> |