Merged revisions 1907-1940,1942-1967 via svnmerge from

http://scons.tigris.org/svn/scons/branches/core

........
  r1914 | stevenknight | 2007-05-19 20:18:45 -0700 (Sat, 19 May 2007) | 4 lines

  Use the dict() builtin, not a by-hand function, to assemble --debug=explain
  info.  Update our backwards-compatibility dict() function so its calling
  signature matches the later SCons dict() builtin, and so it actually works.
........
  r1920 | stevenknight | 2007-05-21 19:59:00 -0700 (Mon, 21 May 2007) | 4 lines

  Issue 1652:  only add the {base}_p.c and {base}_data.c files if the
  /proxy or /dlldata arguments are present (respectively).
  (Allan Erskine)
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  r1921 | stevenknight | 2007-05-21 20:09:54 -0700 (Mon, 21 May 2007) | 2 lines

  Add initial .svnt/conf file for experimental use.
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  r1924 | stevenknight | 2007-05-22 17:51:34 -0700 (Tue, 22 May 2007) | 3 lines

  Don't let tool initialization overwrite ${C,CXX}FILESUFFIX if they're
  already set.
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  r1925 | stevenknight | 2007-05-22 19:14:27 -0700 (Tue, 22 May 2007) | 3 lines

  Change the --debug=explain message when AlwaysBuild() is set from
  the default "unknown reasons" to "because AlwaysBuild() is specified."
........
  r1927 | stevenknight | 2007-05-23 05:20:32 -0700 (Wed, 23 May 2007) | 3 lines

  Issue 1658:  Find Java anonymous classes when the next token after
  the name is an open parenthesis.  (Jan Nijtmans)
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  r1928 | stevenknight | 2007-05-23 11:50:20 -0700 (Wed, 23 May 2007) | 3 lines

  Issue 1313:  add support for {Get,Set}Option('help') and
  {Get,Set}Option('random') .
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  r1929 | stevenknight | 2007-05-23 11:56:18 -0700 (Wed, 23 May 2007) | 3 lines

  Issue 1362:  Push/retrieve built symlinks to/from a CacheDir() as symlinks,
  not by copying file contents.
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  r1930 | stevenknight | 2007-05-23 12:55:12 -0700 (Wed, 23 May 2007) | 3 lines

  Issue 1638:  add LaTeX scanner support for finding dependencies from
  \usepackage{} directives.  (Sohail Somani)
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  r1932 | stevenknight | 2007-05-24 05:06:45 -0700 (Thu, 24 May 2007) | 3 lines

  Add a section mentioning that libraries can be built from mixed lists
  of source code and object files.  (Follow-up from IRC chat.)
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  r1933 | stevenknight | 2007-05-24 11:18:30 -0700 (Thu, 24 May 2007) | 2 lines

  Issue 1467:  add /opt/SUNWspro/bin to the default execution $PATH on Solaris.
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  r1934 | stevenknight | 2007-05-24 13:10:01 -0700 (Thu, 24 May 2007) | 3 lines

  Support running tests when Python is in a path that contains
  spaces (like "C:\Program Files\Python...").
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  r1935 | stevenknight | 2007-05-24 13:11:52 -0700 (Thu, 24 May 2007) | 4 lines

  Issue 1479:  print multiple projects in a Visual Studio 7.[01] solution
  file, generating a separate GUID for each instead of re-using the
  solution GUID.  (Mark Bertoglio)
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  r1937 | stevenknight | 2007-05-26 14:35:17 -0700 (Sat, 26 May 2007) | 4 lines

  Issue 1659:  when stringifying a generator action, fall back to using
  the default construction environment, not an empty dictionary, if not
  environment was supplied.
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  r1938 | stevenknight | 2007-05-29 05:14:37 -0700 (Tue, 29 May 2007) | 2 lines

  Re-run tests if any of the test infrastructure changed, too.
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  r1940 | stevenknight | 2007-05-29 06:58:42 -0700 (Tue, 29 May 2007) | 2 lines

  Issue 1634:  "define HAVE_FEATURE 1" lines in generated config.h files.
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  r1943 | stevenknight | 2007-05-29 13:24:34 -0700 (Tue, 29 May 2007) | 2 lines

  Issue 1426:  Generalize AlwaysBuild() to non-File Nodes.
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  r1945 | stevenknight | 2007-05-30 08:15:25 -0700 (Wed, 30 May 2007) | 3 lines

  Clean up emitter unit tests:  subdivide one large test case into
  separate tests, code renaming and reorganizing for readability.
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  r1947 | stevenknight | 2007-05-30 10:22:49 -0700 (Wed, 30 May 2007) | 4 lines

  Issue 1656:  two PDB fixes:
  1)  support expansion of $TARGET, etc. in emitted file names
  2)  put the output PDB file in the target's build_dir
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  r1951 | stevenknight | 2007-05-31 12:51:42 -0700 (Thu, 31 May 2007) | 3 lines

  Refactor the checkLogAndStdout() function into a TestSCons method
  so we can split the sub-tests into their own scripts.
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  r1952 | stevenknight | 2007-05-31 13:00:56 -0700 (Thu, 31 May 2007) | 3 lines

  Also move the definition of what system library we need to use for
  Configure tests into the TestSCons class.
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  r1953 | stevenknight | 2007-05-31 14:12:16 -0700 (Thu, 31 May 2007) | 2 lines

  Refactor the Configure context subtests into separate scripts.
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  r1954 | stevenknight | 2007-05-31 14:18:11 -0700 (Thu, 31 May 2007) | 3 lines

  Get rid of the work_dir argument to checkLogAndStdout(), since we're
  no longer executing sub-tests from separate subdirectories.
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  r1955 | stevenknight | 2007-05-31 14:35:20 -0700 (Thu, 31 May 2007) | 2 lines

  Move the test to its correct subdirectory.  Oops.
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  r1958 | stevenknight | 2007-06-01 08:35:50 -0700 (Fri, 01 Jun 2007) | 2 lines

  Skip the Visual C/C++ PDB + BuildDir test when not run on Windows.
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  r1959 | stevenknight | 2007-06-01 09:35:09 -0700 (Fri, 01 Jun 2007) | 2 lines

  Support an AddMethod() global function and construction environment method.
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  r1960 | stevenknight | 2007-06-01 09:52:59 -0700 (Fri, 01 Jun 2007) | 3 lines

  Python 1.5 compatibility in the test infrastructure added to support
  the refactored Configure tests.
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  r1963 | stevenknight | 2007-06-01 12:29:48 -0700 (Fri, 01 Jun 2007) | 2 lines

  Python 1.5 compatibility fix for AddMethod().
........

2 files changed, 17 insertions, 18 deletions

diff --git a/src/engine/SCons/Node/FS.py b/src/engine/SCons/Node/FS.py
index a16fee4..c9a1443 100644
--- a/src/engine/SCons/Node/FS.py
+++ b/src/engine/SCons/Node/FS.py
@@ -232,7 +232,10 @@ def CacheRetrieveFunc(target, source, env):
         return 1
     fs.CacheDebug('CacheRetrieve(%s):  retrieving from %s\n', t, cachefile)
     if SCons.Action.execute_actions:
-        fs.copy2(cachefile, t.path)
+        if fs.islink(cachefile):
+            fs.symlink(fs.readlink(cachefile), t.path)
+        else:
+            fs.copy2(cachefile, t.path)
         st = fs.stat(cachefile)
         fs.chmod(t.path, stat.S_IMODE(st[stat.ST_MODE]) | stat.S_IWRITE)
     return 0
@@ -272,7 +275,10 @@ def CachePushFunc(target, source, env):
 
     tempfile = cachefile+'.tmp'
     try:
-        fs.copy2(t.path, tempfile)
+        if fs.islink(t.path):
+            fs.symlink(fs.readlink(t.path), tempfile)
+        else:
+            fs.copy2(t.path, tempfile)
         fs.rename(tempfile, cachefile)
         st = fs.stat(t.path)
         fs.chmod(cachefile, stat.S_IMODE(st[stat.ST_MODE]) | stat.S_IWRITE)
@@ -2269,8 +2275,6 @@ class File(Base):
         self.binfo = self.gen_binfo(calc)
         return self._cur2()
     def _cur2(self):
-        if self.always_build:
-            return None
         if not self.exists():
             # The file doesn't exist locally...
             r = self.rfile()
diff --git a/src/engine/SCons/Node/__init__.py b/src/engine/SCons/Node/__init__.py
index 6644d7a..f550b5b 100644
--- a/src/engine/SCons/Node/__init__.py
+++ b/src/engine/SCons/Node/__init__.py
@@ -1046,32 +1046,27 @@ class Node:
         if not self.exists():
             return "building `%s' because it doesn't exist\n" % self
 
+        if self.always_build:
+            return "rebuilding `%s' because AlwaysBuild() is specified\n" % self
+
         old = self.get_stored_info()
         if old is None:
             return None
         old.prepare_dependencies()
 
-        def dictify(result, kids, sigs):
-            for k, s in zip(kids, sigs):
-                result[k] = s
-
         try:
-            osig = {}
-            dictify(osig, old.bsources, old.bsourcesigs)
-            dictify(osig, old.bdepends, old.bdependsigs)
-            dictify(osig, old.bimplicit, old.bimplicitsigs)
+            old_bkids    = old.bsources    + old.bdepends    + old.bimplicit
+            old_bkidsigs = old.bsourcesigs + old.bdependsigs + old.bimplicitsigs
         except AttributeError:
             return "Cannot explain why `%s' is being rebuilt: No previous build information found\n" % self
 
         new = self.get_binfo()
 
-        nsig = {}
-        dictify(nsig, new.bsources, new.bsourcesigs)
-        dictify(nsig, new.bdepends, new.bdependsigs)
-        dictify(nsig, new.bimplicit, new.bimplicitsigs)
+        new_bkids    = new.bsources    + new.bdepends    + new.bimplicit
+        new_bkidsigs = new.bsourcesigs + new.bdependsigs + new.bimplicitsigs
 
-        old_bkids = old.bsources + old.bdepends + old.bimplicit
-        new_bkids = new.bsources + new.bdepends + new.bimplicit
+        osig = dict(zip(old_bkids, old_bkidsigs))
+        nsig = dict(zip(new_bkids, new_bkidsigs))
 
         # The sources and dependencies we'll want to report are all stored
         # as relative paths to this target's directory, but we want to