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    <p>There seems to be little advancement in the SCons core code for symbolic link support and I wasn't satisfied any one solution I found on the web. Here is a potential builder which incorporates aspects of both Nick's and richq's answers. Additionally, it will catch name changes (due to the emitter method) and is as platform-agnostic as I could get it.</p> <p>I prefer this builder because it will make links relative to the directory in which they are installed. One could add an option to force the link to be absolute I suppose, but I have not needed or wanted that yet.</p> <p>Currently, if the OS doesn't support symlinks, I just pass and do nothing, but one could use os.copytree() for example however the dependency becomes messy if the source is a directory so the emitter would need to do something fancy. I'm up for any suggestions here.</p> <p>One can put the following code into the file <strong>site_scons/site_tools/symlink.py</strong> (with blank <strong>_<em>init</em>_.py</strong> files in the appropriate places). Then do this in the SConstruct file:</p> <p>SConstruct:</p> <pre class="lang-python prettyprint-override"><code>env = Environment() env.Tool('symlink') env.SymLink('link_name.txt', 'real_file.txt') </code></pre> <p>symlink.py:</p> <pre class="lang-python prettyprint-override"><code>import os from os import path from SCons.Node import FS from SCons.Script import Action, Builder def generate(env): ''' SymLink(link_name,source) env.SymLink(link_name,source) Makes a symbolic link named "link_name" that points to the real file or directory "source". The link produced is always relative. ''' bldr = Builder(action = Action(symlink_builder,symlink_print), target_factory = FS.File, source_factory = FS.Entry, single_target = True, single_source = True, emitter = symlink_emitter) env.Append(BUILDERS = {'SymLink' : bldr}) def exists(env): ''' we could test if the OS supports symlinks here, or we could use copytree as an alternative in the builder. ''' return True def symlink_print(target, source, env): lnk = path.basename(target[0].abspath) src = path.basename(source[0].abspath) return 'Link: '+lnk+' points to '+src def symlink_emitter(target, source, env): ''' This emitter removes the link if the source file name has changed since scons does not seem to catch this case. ''' lnk = target[0].abspath src = source[0].abspath lnkdir,lnkname = path.split(lnk) srcrel = path.relpath(src,lnkdir) if int(env.get('verbose',0)) &gt; 3: ldir = path.relpath(lnkdir,env.Dir('#').abspath) if rellnkdir[:2] == '..': ldir = path.abspath(ldir) print ' symbolic link in directory: %s' % ldir print ' %s -&gt; %s' % (lnkname,srcrel) try: if path.exists(lnk): if os.readlink(lnk) != srcrel: os.remove(lnk) except AttributeError: # no symlink available, so we remove the whole tree? (or pass) #os.rmtree(lnk) print 'no os.symlink capability on this system?' return (target, source) def symlink_builder(target, source, env): lnk = target[0].abspath src = source[0].abspath lnkdir,lnkname = path.split(lnk) srcrel = path.relpath(src,lnkdir) if int(env.get('verbose',0)) &gt; 4: print 'target:', target print 'source:', source print 'lnk:', lnk print 'src:', src print 'lnkdir,lnkname:', lnkdir, lnkname print 'srcrel:', srcrel if int(env.get('verbose',0)) &gt; 4: print 'in directory: %s' % path.relpath(lnkdir,env.Dir('#').abspath) print ' symlink: %s -&gt; %s' % (lnkname,srcrel) try: os.symlink(srcrel,lnk) except AttributeError: # no symlink available, so we make a (deep) copy? (or pass) #os.copytree(srcrel,lnk) print 'no os.symlink capability on this system?' return None </code></pre>
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    1. POHow to create a symbolic link with SCons?
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