From 140d836e9cd54fb67b969fd82ef7ed19ba574d40 Mon Sep 17 00:00:00 2001 From: Luca Falavigna Date: Sat, 26 Apr 2014 15:11:58 +0200 Subject: Imported Upstream version 2.3.1 --- doc/user/add-method.in | 127 ------------------------------------------------- 1 file changed, 127 deletions(-) delete mode 100644 doc/user/add-method.in (limited to 'doc/user/add-method.in') diff --git a/doc/user/add-method.in b/doc/user/add-method.in deleted file mode 100644 index a0c21a3..0000000 --- a/doc/user/add-method.in +++ /dev/null @@ -1,127 +0,0 @@ - - - - - The &AddMethod; function is used to add a method - to an environment. It's typically used to add a "pseudo-builder," - a function that looks like a &Builder; but - wraps up calls to multiple other &Builder;s - or otherwise processes its arguments - before calling one or more &Builder;s. - In the following example, - we want to install the program into the standard - /usr/bin directory hierarchy, - but also copy it into a local install/bin - directory from which a package might be built: - - - - - - def install_in_bin_dirs(env, source): - """Install source in both bin dirs""" - i1 = env.Install("$BIN", source) - i2 = env.Install("$LOCALBIN", source) - return [i1[0], i2[0]] # Return a list, like a normal builder - env = Environment(BIN='__ROOT__/usr/bin', LOCALBIN='#install/bin') - env.AddMethod(install_in_bin_dirs, "InstallInBinDirs") - env.InstallInBinDirs(Program('hello.c')) # installs hello in both bin dirs - - - int main() { printf("Hello, world!\n"); } - - - - - This produces the following: - - - - scons -Q / - - - - - As mentioned, a pseudo-builder also provides more flexibility - in parsing arguments than you can get with a &Builder;. - The next example shows a pseudo-builder with a - named argument that modifies the filename, and a separate argument - for the resource file (rather than having the builder figure it out - by file extension). This example also demonstrates using the global - &AddMethod; function to add a method to the global Environment class, - so it will be used in all subsequently created environments. - - - - - - def BuildTestProg(env, testfile, resourcefile, testdir="tests"): - """Build the test program; - prepends "test_" to src and target, - and puts target into testdir.""" - srcfile = "test_%s.c" % testfile - target = "%s/test_%s" % (testdir, testfile) - if env['PLATFORM'] == 'win32': - resfile = env.RES(resourcefile) - p = env.Program(target, [srcfile, resfile]) - else: - p = env.Program(target, srcfile) - return p - AddMethod(Environment, BuildTestProg) - - env = Environment() - env.BuildTestProg('stuff', resourcefile='res.rc') - - - int main() { printf("Hello, world!\n"); } - - - res.rc - - - - - This produces the following on Linux: - - - - scons -Q - - - - And the following on Windows: - - - - scons -Q - - - - Using &AddMethod; is better than just adding an instance method - to a &consenv; because it gets called as a proper method, - and because &AddMethod; provides for copying the method - to any clones of the &consenv; instance. - -- cgit v1.2.3