Add Fortran 90/95 support. (Chris Murray)

19 files changed, 982 insertions, 75 deletions

diff --git a/src/engine/SCons/Defaults.py b/src/engine/SCons/Defaults.py
index fb3669a..8100869 100644
--- a/src/engine/SCons/Defaults.py
+++ b/src/engine/SCons/Defaults.py
@@ -49,7 +49,6 @@ import SCons.Builder
 import SCons.Environment
 import SCons.Scanner.C
 import SCons.Scanner.D
-import SCons.Scanner.Fortran
 import SCons.Scanner.Prog
 import SCons.Sig
 
@@ -115,13 +114,6 @@ DSuffixes = ['.d']
 for suffix in DSuffixes:
     ObjSourceScan.add_scanner(suffix, DScan)
 
-FortranScan = SCons.Scanner.Fortran.FortranScan()
-
-FortranSuffixes = [".f", ".F", ".for", ".FOR"]
-
-for suffix in FortranSuffixes:
-    ObjSourceScan.add_scanner(suffix, FortranScan)
-
 IDLSuffixes = [".idl", ".IDL"]
 
 # cleanup
@@ -134,11 +126,6 @@ ShCAction = SCons.Action.Action("$SHCCCOM")
 CXXAction = SCons.Action.Action("$CXXCOM")
 ShCXXAction = SCons.Action.Action("$SHCXXCOM")
 
-F77Action = SCons.Action.Action("$F77COM")
-ShF77Action = SCons.Action.Action("$SHF77COM")
-F77PPAction = SCons.Action.Action("$F77PPCOM")
-ShF77PPAction = SCons.Action.Action("$SHF77PPCOM")
-
 ASAction = SCons.Action.Action("$ASCOM")
 ASPPAction = SCons.Action.Action("$ASPPCOM")
 
@@ -235,7 +222,7 @@ def _concat(prefix, list, suffix, env, f=lambda x: x):
     element in the list using the 'env' dictionary and then calling f
     on the list, and finally concatenating 'prefix' and 'suffix' onto
     each element of the list. A trailing space on 'prefix' or leading
-    space on 'suffix' will cause them to be put into seperate list
+    space on 'suffix' will cause them to be put into separate list
     elements rather than being concatenated."""
     
     if not list:
@@ -347,7 +334,6 @@ ConstructionEnvironment = {
     'SCANNERS'   : [],
     'CPPSUFFIXES': CSuffixes,
     'DSUFFIXES'  : DSuffixes,
-    'FORTRANSUFFIXES': FortranSuffixes,
     'IDLSUFFIXES': IDLSuffixes,
     'PDFPREFIX'  : '',
     'PDFSUFFIX'  : '.pdf',
@@ -361,7 +347,6 @@ ConstructionEnvironment = {
     '_LIBFLAGS'    : '${_concat(LIBLINKPREFIX, LIBS, LIBLINKSUFFIX, __env__)}',
     '_LIBDIRFLAGS' : '$( ${_concat(LIBDIRPREFIX, LIBPATH, LIBDIRSUFFIX, __env__, RDirs)} $)',
     '_CPPINCFLAGS' : '$( ${_concat(INCPREFIX, CPPPATH, INCSUFFIX, __env__, RDirs)} $)',
-    '_F77INCFLAGS' : '$( ${_concat(INCPREFIX, F77PATH, INCSUFFIX, __env__, RDirs)} $)',
     '_CPPDEFFLAGS' : '${_defines(CPPDEFPREFIX, CPPDEFINES, CPPDEFSUFFIX, __env__)}',
     'TEMPFILE'     : NullCmdGenerator
     }
diff --git a/src/engine/SCons/Scanner/Fortran.py b/src/engine/SCons/Scanner/Fortran.py
index 9e9a990..786d4ab 100644
--- a/src/engine/SCons/Scanner/Fortran.py
+++ b/src/engine/SCons/Scanner/Fortran.py
@@ -1,6 +1,6 @@
 """SCons.Scanner.Fortran
 
-This module implements the dependency scanner for Fortran code. 
+This module implements the dependency scanner for Fortran code.
 
 """
 
@@ -29,18 +29,266 @@ This module implements the dependency scanner for Fortran code.
 
 __revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
 
+import re
+import string
+
 import SCons.Node
 import SCons.Node.FS
 import SCons.Scanner
 import SCons.Util
 import SCons.Warnings
 
-def FortranScan(fs = SCons.Node.FS.default_fs):
+class F90Scanner(SCons.Scanner.Classic):
+    """
+    A Classic Scanner subclass for Fortran source files which takes
+    into account both USE and INCLUDE statements.  This scanner will
+    work for both F77 and F90 (and beyond) compilers.
+
+    Currently, this scanner assumes that the include files do not contain
+    USE statements.  To enable the ability to deal with USE statements
+    in include files, add logic right after the module names are found
+    to loop over each include file, search for and locate each USE
+    statement, and append each module name to the list of dependencies.
+    Caching the search results in a common dictionary somewhere so that
+    the same include file is not searched multiple times would be a
+    smart thing to do.
+    """
+
+    def __init__(self, name, suffixes, path_variable, use_regex,
+                 incl_regex, fs=SCons.Node.FS.default_fs, *args, **kw):
+
+        self.cre_use = re.compile(use_regex, re.M)
+        self.cre_incl = re.compile(incl_regex, re.M)
+        self.fs = fs
+
+        def _scan(node, env, path, self=self, fs=fs):
+            return self.scan(node, env, path)
+
+        kw['function'] = _scan
+        kw['path_function'] = SCons.Scanner.FindPathDirs(path_variable, fs)
+        kw['recursive'] = 1
+        kw['skeys'] = suffixes
+        kw['name'] = name
+
+        apply(SCons.Scanner.Current.__init__, (self,) + args, kw)
+
+    def scan(self, node, env, path=()):
+        node = node.rfile()
+
+        if not node.exists():
+            return []
+
+        # cache the includes list in node so we only scan it once:
+        if node.includes != None:
+            mods_and_includes = node.includes
+        else:
+            # retrieve all included filenames
+            includes = self.cre_incl.findall(node.get_contents())
+            # retrieve all USE'd module names
+            modules = self.cre_use.findall(node.get_contents())
+
+            # Convert module name to a .mod filename
+            suffix = env.subst('$FORTRANMODSUFFIX')
+            modules = map(lambda x, s=suffix: string.lower(x) + s, modules)
+            # Remove unique items from the list
+            mods_and_includes = SCons.Util.unique(includes+modules)
+            node.includes = mods_and_includes
+
+        nodes = []
+        source_dir = node.get_dir()
+        for dep in mods_and_includes:
+            n, i = self.find_include(dep, source_dir, path)
+
+            if not n is None:
+                nodes.append(n)
+            else:
+                SCons.Warnings.warn(SCons.Warnings.DependencyWarning,
+                                    "No dependency generated for file: %s (referenced by: %s) -- file not found" % (i, node))
+
+        #  Sort the list of dependencies
+
+        # Schwartzian transform from the Python FAQ Wizard
+        def st(List, Metric):
+            def pairing(element, M = Metric):
+                return (M(element), element)
+            def stripit(pair):
+                return pair[1]
+            paired = map(pairing, List)
+            paired.sort()
+            return map(stripit, paired)
+
+        def normalize(node):
+            # We don't want the order of includes to be
+            # modified by case changes on case insensitive OSes, so
+            # normalize the case of the filename here:
+            # (see test/win32pathmadness.py for a test of this)
+            return SCons.Node.FS._my_normcase(str(node))
+
+        # Apply a Schwartzian transform to return the list of
+        # dependencies, sorted according to their normalized names
+        transformed = st(nodes, normalize)
+#        print "ClassicF90: " + str(node) + " => " + str(map(lambda x: str(x),list(transformed)))
+        return transformed
+
+
+def FortranScan(path_variable="FORTRANPATH", fs=SCons.Node.FS.default_fs):
     """Return a prototype Scanner instance for scanning source files
-    for Fortran INCLUDE statements"""
-    scanner = SCons.Scanner.Classic("FortranScan",
-                                    "$FORTRANSUFFIXES",
-                                    "F77PATH",
-                                    "(?i)INCLUDE[ \t]+'([\\w./\\\\]+)'",
-                                    fs = fs)
+    for Fortran USE & INCLUDE statements"""
+
+#   The USE statement regex matches the following:
+#
+#   USE module_name
+#   USE :: module_name
+#   USE, INTRINSIC :: module_name
+#   USE, NON_INTRINSIC :: module_name
+#
+#   Limitations
+#
+#   --  While the regex can handle multiple USE statements on one line,
+#       it cannot properly handle them if they are commented out.
+#       In either of the following cases:
+#
+#            !  USE mod_a ; USE mod_b         [entire line is commented out]
+#               USE mod_a ! ; USE mod_b       [in-line comment of second USE statement]
+#
+#       the second module name (mod_b) will be picked up as a dependency
+#       even though it should be ignored.  The only way I can see
+#       to rectify this would be to modify the scanner to eliminate
+#       the call to re.findall, read in the contents of the file,
+#       treating the comment character as an end-of-line character
+#       in addition to the normal linefeed, loop over each line,
+#       weeding out the comments, and looking for the USE statements.
+#       One advantage to this is that the regex passed to the scanner
+#       would no longer need to match a semicolon.
+#
+#   --  I question whether or not we need to detect dependencies to
+#       INTRINSIC modules because these are built-in to the compiler.
+#       If we consider them a dependency, will SCons look for them, not
+#       find them, and kill the build?  Or will we there be standard
+#       compiler-specific directories we will need to point to so the
+#       compiler and SCons can locate the proper object and mod files?
+
+#   Here is a breakdown of the regex:
+#
+#   (?i)               : regex is case insensitive
+#   ^                  : start of line
+#   (?:                : group a collection of regex symbols without saving the match as a "group"
+#      ^|;             : matches either the start of the line or a semicolon - semicolon
+#   )                  : end the unsaved grouping
+#   \s*                : any amount of white space
+#   USE                : match the string USE, case insensitive
+#   (?:                : group a collection of regex symbols without saving the match as a "group"
+#      \s+|            : match one or more whitespace OR ....  (the next entire grouped set of regex symbols)
+#      (?:             : group a collection of regex symbols without saving the match as a "group"
+#         (?:          : establish another unsaved grouping of regex symbols
+#            \s*          : any amount of white space
+#            ,         : match a comma
+#            \s*       : any amount of white space
+#            (?:NON_)? : optionally match the prefix NON_, case insensitive
+#            INTRINSIC : match the string INTRINSIC, case insensitive
+#         )?           : optionally match the ", INTRINSIC/NON_INTRINSIC" grouped expression
+#         \s*          : any amount of white space
+#         ::           : match a double colon that must appear after the INTRINSIC/NON_INTRINSIC attribute
+#      )               : end the unsaved grouping
+#   )                  : end the unsaved grouping
+#   \s*                : match any amount of white space
+#   (\w+)              : match the module name that is being USE'd
+#
+#
+    use_regex = "(?i)(?:^|;)\s*USE(?:\s+|(?:(?:\s*,\s*(?:NON_)?INTRINSIC)?\s*::))\s*(\w+)"
+
+
+#   The INCLUDE statement regex matches the following:
+#
+#   INCLUDE 'some_Text'
+#   INCLUDE "some_Text"
+#   INCLUDE "some_Text" ; INCLUDE "some_Text"
+#   INCLUDE kind_"some_Text"
+#   INCLUDE kind_'some_Text"
+#
+#   where some_Text can include any alphanumeric and/or special character
+#   as defined by the Fortran 2003 standard.
+#
+#   Limitations:
+#
+#   --  The Fortran standard dictates that a " or ' in the INCLUDE'd
+#       string must be represented as a "" or '', if the quotes that wrap
+#       the entire string are either a ' or ", respectively.   While the
+#       regular expression below can detect the ' or " characters just fine,
+#       the scanning logic, presently is unable to detect them and reduce
+#       them to a single instance.  This probably isn't an issue since,
+#       in practice, ' or " are not generally used in filenames.
+#
+#   --  This regex will not properly deal with multiple INCLUDE statements
+#       when the entire line has been commented out, ala
+#
+#           ! INCLUDE 'some_file' ; INCLUDE 'some_file'
+#
+#       In such cases, it will properly ignore the first INCLUDE file,
+#       but will actually still pick up the second.  Interestingly enough,
+#       the regex will properly deal with these cases:
+#
+#             INCLUDE 'some_file'
+#             INCLUDE 'some_file' !; INCLUDE 'some_file'
+#
+#       To get around the above limitation, the FORTRAN programmer could
+#       simply comment each INCLUDE statement separately, like this
+#
+#           ! INCLUDE 'some_file' !; INCLUDE 'some_file'
+#
+#       The way I see it, the only way to get around this limitation would
+#       be to modify the scanning logic to replace the calls to re.findall
+#       with a custom loop that processes each line separately, throwing
+#       away fully commented out lines before attempting to match against
+#       the INCLUDE syntax.
+#
+#   Here is a breakdown of the regex:
+#
+#   (?i)               : regex is case insensitive
+#   (?:                : begin a non-saving group that matches the following:
+#      ^               :    either the start of the line
+#      |               :                or
+#      ['">]\s*;       :    a semicolon that follows a single quote,
+#                           double quote or greater than symbol (with any
+#                           amount of whitespace in between).  This will
+#                           allow the regex to match multiple INCLUDE
+#                           statements per line (although it also requires
+#                           the positive lookahead assertion that is
+#                           used below).  It will even properly deal with
+#                           (i.e. ignore) cases in which the additional
+#                           INCLUDES are part of an in-line comment, ala
+#                                           "  INCLUDE 'someFile' ! ; INCLUDE 'someFile2' "
+#   )                  : end of non-saving group
+#   \s*                : any amount of white space
+#   INCLUDE            : match the string INCLUDE, case insensitive
+#   \s+                : match one or more white space characters
+#   (?\w+_)?           : match the optional "kind-param _" prefix allowed by the standard
+#   [<"']              : match the include delimiter - an apostrophe, double quote, or less than symbol
+#   (.+?)              : match one or more characters that make up
+#                        the included path and file name and save it
+#                        in a group.  The Fortran standard allows for
+#                        any non-control character to be used.  The dot
+#                        operator will pick up any character, including
+#                        control codes, but I can't conceive of anyone
+#                        putting control codes in their file names.
+#                        The question mark indicates it is non-greedy so
+#                        that regex will match only up to the next quote,
+#                        double quote, or greater than symbol
+#   (?=["'>])          : positive lookahead assertion to match the include
+#                        delimiter - an apostrophe, double quote, or
+#                        greater than symbol.  This level of complexity
+#                        is required so that the include delimiter is
+#                        not consumed by the match, thus allowing the
+#                        sub-regex discussed above to uniquely match a
+#                        set of semicolon-separated INCLUDE statements
+#                        (as allowed by the F2003 standard)
+
+    include_regex = """(?i)(?:^|['">]\s*;)\s*INCLUDE\s+(?:\w+_)?[<"'](.+?)(?=["'>])"""
+
+    scanner = F90Scanner("FortranScan",
+                         "$FORTRANSUFFIXES",
+                         path_variable,
+                         use_regex,
+                         include_regex,
+                         fs = fs)
     return scanner
diff --git a/src/engine/SCons/Scanner/FortranTests.py b/src/engine/SCons/Scanner/FortranTests.py
index 766f0ee..b7e527c 100644
--- a/src/engine/SCons/Scanner/FortranTests.py
+++ b/src/engine/SCons/Scanner/FortranTests.py
@@ -134,19 +134,90 @@ test.write([ 'repository', 'src', 'ccc.f'], """
 
 test.write([ 'repository', 'src', 'ddd.f'], "\n")
 
+
+test.write('fff90a.f90',"""
+      PROGRAM FOO
+
+!  Test comments - these includes should NOT be picked up
+C     INCLUDE 'fi.f'
+#     INCLUDE 'fi.f'
+  !   INCLUDE 'fi.f'
+
+      INCLUDE 'f1.f'  ! in-line comments are valid syntax
+      INCLUDE"fi.f"   ! space is significant - this should be ignored
+      INCLUDE  <f2.f>  ! Absoft compiler allows greater than/less than delimiters
+!
+!  Allow kind type parameters
+      INCLUDE kindType_"f3.f"
+      INCLUDE kind_Type_"f4.f"
+!
+!  Test multiple statements per line - use various spacings between semicolons
+      incLUDE 'f5.f';include "f6.f"  ;  include <f7.f>; include 'f8.f' ;include kindType_'f9.f'
+!
+!  Test various USE statement syntaxes
+!
+      USE Mod01
+      use mod02
+      use use
+      USE mOD03, ONLY : someVar
+      USE MOD04 ,only:someVar
+      USE Mod05 , ONLY: someVar ! in-line comment
+      USE Mod06,ONLY :someVar,someOtherVar
+
+      USE  mod07;USE  mod08; USE mod09 ;USE mod10 ; USE mod11  ! Test various semicolon placements
+      use mod12 ;use mod13! Test comment at end of line
+
+!     USE modi
+!     USE modia ; use modib    ! Scanner regexp will only ignore the first - this is a deficiency in the regexp
+    ! USE modic ; ! use modid  ! Scanner regexp should ignore both modules
+      USE mod14 !; USE modi    ! Only ignore the second
+      USE mod15!;USE modi
+      USE mod16  !  ;  USE  modi
+
+!  Test semicolon syntax - use various spacings
+      USE :: mod17
+      USE::mod18
+      USE ::mod19 ; USE:: mod20
+
+      use, non_intrinsic :: mod21, ONLY : someVar ; use,intrinsic:: mod22
+      USE, NON_INTRINSIC::mod23 ; USE ,INTRINSIC ::mod24
+
+USE mod25  ! Test USE statement at the beginning of line
+
+
+; USE modi   ! Scanner should ignore this since it isn't valid syntax
+      USEmodi   ! No space in between USE and module name - ignore it
+      USE mod01   ! This one is a duplicate - there should only be one dependency to it.
+
+      STOP
+      END
+""")
+
+modules = ['mod01.mod', 'mod02.mod', 'mod03.mod', 'mod04.mod', 'mod05.mod',
+           'mod06.mod', 'mod07.mod', 'mod08.mod', 'mod09.mod', 'mod10.mod',
+           'mod11.mod', 'mod12.mod', 'mod13.mod', 'mod14.mod', 'mod15.mod',
+           'mod16.mod', 'mod17.mod', 'mod18.mod', 'mod19.mod', 'mod20.mod',
+           'mod21.mod', 'mod22.mod', 'mod23.mod', 'mod24.mod', 'mod25.mod']
+
+for m in modules:
+    test.write(m, "\n")
+
+test.subdir('modules')
+test.write(['modules', 'use.mod'], "\n")
+
 # define some helpers:
 
 class DummyEnvironment:
     def __init__(self, listCppPath):
         self.path = listCppPath
-        
+
     def Dictionary(self, *args):
         if not args:
-            return { 'F77PATH': self.path }
-        elif len(args) == 1 and args[0] == 'F77PATH':
+            return { 'FORTRANPATH': self.path, 'FORTRANMODSUFFIX' : ".mod" }
+        elif len(args) == 1 and args[0] == 'FORTRANPATH':
             return self.path
         else:
-            raise KeyError, "Dummy environment only has F77PATH attribute."
+            raise KeyError, "Dummy environment only has FORTRANPATH attribute."
 
     def has_key(self, key):
         return self.Dictionary().has_key(key)
@@ -161,6 +232,8 @@ class DummyEnvironment:
         del self.Dictionary()[key]
 
     def subst(self, arg):
+        if arg[0] == '$':
+            return self[arg[1:]]
         return arg
 
     def subst_path(self, path):
@@ -274,7 +347,7 @@ class FortranScannerTestCase8(unittest.TestCase):
         headers =  ['d1/d2/f2.f', 'd1/f2.f', 'f2.f']
         deps_match(self, deps, map(test.workpath, headers))
         test.unlink('f2.f')
-        
+
 class FortranScannerTestCase9(unittest.TestCase):
     def runTest(self):
         test.write('f3.f', "\n")
@@ -290,11 +363,11 @@ class FortranScannerTestCase9(unittest.TestCase):
         setattr(n, 'rexists', my_rexists)
 
         deps = s(n, env, path)
-        
+
         # Make sure rexists() got called on the file node being
         # scanned, essential for cooperation with BuildDir functionality.
         assert n.rexists_called
-        
+
         headers =  ['d1/f3.f', 'f3.f']
         deps_match(self, deps, map(test.workpath, headers))
         test.unlink('f3.f')
@@ -334,7 +407,7 @@ class FortranScannerTestCase11(unittest.TestCase):
 
         # Did we catch the warning from not finding not_there.f?
         assert to.out
-        
+
         deps_match(self, deps, [ 'f5.f' ])
 
 class FortranScannerTestCase12(unittest.TestCase):
@@ -402,6 +475,42 @@ class FortranScannerTestCase15(unittest.TestCase):
         deps_match(self, deps, map(test.workpath, headers))
         test.write(['d1', 'f2.f'], "\n")
 
+class FortranScannerTestCase16(unittest.TestCase):
+    def runTest(self):
+        test.write('f1.f', "\n")
+        test.write('f2.f', "\n")
+        test.write('f3.f', "\n")
+        test.write('f4.f', "\n")
+        test.write('f5.f', "\n")
+        test.write('f6.f', "\n")
+        test.write('f7.f', "\n")
+        test.write('f8.f', "\n")
+        test.write('f9.f', "\n")
+        test.write('f10.f', "\n")
+        env = DummyEnvironment([test.workpath('modules')])
+        s = SCons.Scanner.Fortran.FortranScan()
+        path = s.path(env)
+        fs = SCons.Node.FS.FS(original)
+        deps = s(make_node('fff90a.f90', fs), env, path)
+        headers = ['f1.f', 'f2.f', 'f3.f', 'f4.f', 'f5.f', 'f6.f', 'f7.f', 'f8.f', 'f9.f']
+        modules = ['mod01.mod', 'mod02.mod', 'mod03.mod', 'mod04.mod', 'mod05.mod',
+                   'mod06.mod', 'mod07.mod', 'mod08.mod', 'mod09.mod', 'mod10.mod',
+                   'mod11.mod', 'mod12.mod', 'mod13.mod', 'mod14.mod', 'mod15.mod',
+                   'mod16.mod', 'mod17.mod', 'mod18.mod', 'mod19.mod', 'mod20.mod',
+                   'mod21.mod', 'mod22.mod', 'mod23.mod', 'mod24.mod', 'mod25.mod', 'modules/use.mod']
+        deps_expected = headers + modules
+        deps_match(self, deps, map(test.workpath, deps_expected))
+        test.unlink('f1.f')
+        test.unlink('f2.f')
+        test.unlink('f3.f')
+        test.unlink('f4.f')
+        test.unlink('f5.f')
+        test.unlink('f6.f')
+        test.unlink('f7.f')
+        test.unlink('f8.f')
+        test.unlink('f9.f')
+        test.unlink('f10.f')
+
 def suite():
     suite = unittest.TestSuite()
     suite.addTest(FortranScannerTestCase1())
@@ -419,6 +528,7 @@ def suite():
     suite.addTest(FortranScannerTestCase13())
     suite.addTest(FortranScannerTestCase14())
     suite.addTest(FortranScannerTestCase15())
+    suite.addTest(FortranScannerTestCase16())
     return suite
 
 if __name__ == "__main__":
diff --git a/src/engine/SCons/Tool/__init__.py b/src/engine/SCons/Tool/__init__.py
index 5753bb9..53d288e 100644
--- a/src/engine/SCons/Tool/__init__.py
+++ b/src/engine/SCons/Tool/__init__.py
@@ -6,7 +6,7 @@ This looks for modules that define a callable object that can modify
 a construction environment as appropriate for a given tool (or tool
 chain).
 
-Note that because this subsysem just *selects* a callable that can
+Note that because this subsystem just *selects* a callable that can
 modify a construction environment, it's possible for people to define
 their own "tool specification" in an arbitrary callable function.  No
 one needs to use or tie in to this subsystem in order to roll their own
@@ -170,26 +170,24 @@ def createObjBuilders(env):
         static_obj = env['BUILDERS']['StaticObject']
     except KeyError:
         static_obj = SCons.Builder.Builder(action = {},
-                                           emitter = "$OBJEMITTER",
+                                           emitter = {},
                                            prefix = '$OBJPREFIX',
                                            suffix = '$OBJSUFFIX',
                                            src_builder = ['CFile', 'CXXFile'],
                                            source_scanner = SCons.Defaults.ObjSourceScan, single_source=1)
         env['BUILDERS']['StaticObject'] = static_obj
         env['BUILDERS']['Object'] = static_obj
-        env['OBJEMITTER'] = SCons.Defaults.StaticObjectEmitter
 
     try:
         shared_obj = env['BUILDERS']['SharedObject']
     except KeyError:
         shared_obj = SCons.Builder.Builder(action = {},
-                                           emitter = "$SHOBJEMITTER",
+                                           emitter = {},
                                            prefix = '$SHOBJPREFIX',
                                            suffix = '$SHOBJSUFFIX',
                                            src_builder = ['CFile', 'CXXFile'],
                                            source_scanner = SCons.Defaults.ObjSourceScan, single_source=1)
         env['BUILDERS']['SharedObject'] = shared_obj
-        env['SHOBJEMITTER'] = SCons.Defaults.SharedObjectEmitter
 
     return (static_obj, shared_obj)
 
@@ -251,7 +249,7 @@ def tool_list(platform, env):
         c_compilers = ['msvc', 'mingw', 'gcc', 'icl', 'icc', 'cc', 'bcc32' ]
         cxx_compilers = ['msvc', 'icc', 'g++', 'c++', 'bcc32' ]
         assemblers = ['masm', 'nasm', 'gas', '386asm' ]
-        fortran_compilers = ['g77', 'ifl']
+        fortran_compilers = ['g77', 'ifl', 'cvf', 'fortran']
         ars = ['mslib', 'ar', 'tlib']
     elif str(platform) == 'os2':
         "prefer IBM tools on OS/2"
@@ -267,7 +265,7 @@ def tool_list(platform, env):
         c_compilers = ['sgicc', 'gcc', 'cc']
         cxx_compilers = ['sgic++', 'g++', 'c++']
         assemblers = ['as', 'gas']
-        fortran_compilers = ['f77', 'g77']
+        fortran_compilers = ['f77', 'g77', 'fortran']
         ars = ['sgiar']
     elif str(platform) == 'sunos':
         "prefer Forte tools on SunOS"
@@ -275,7 +273,7 @@ def tool_list(platform, env):
         c_compilers = ['suncc', 'gcc', 'cc']
         cxx_compilers = ['sunc++', 'g++', 'c++']
         assemblers = ['as', 'gas']
-        fortran_compilers = ['f77', 'g77']
+        fortran_compilers = ['f77', 'g77', 'fortran']
         ars = ['sunar']
     elif str(platform) == 'hpux':
         "prefer aCC tools on HP-UX"
@@ -283,7 +281,7 @@ def tool_list(platform, env):
         c_compilers = ['hpcc', 'gcc', 'cc']
         cxx_compilers = ['hpc++', 'g++', 'c++']
         assemblers = ['as', 'gas']
-        fortran_compilers = ['f77', 'g77']
+        fortran_compilers = ['f77', 'g77', 'fortran']
         ars = ['ar']
     elif str(platform) == 'aix':
         "prefer AIX Visual Age tools on AIX"
@@ -291,7 +289,7 @@ def tool_list(platform, env):
         c_compilers = ['aixcc', 'gcc', 'cc']
         cxx_compilers = ['aixc++', 'g++', 'c++']
         assemblers = ['as', 'gas']
-        fortran_compilers = ['aixf77', 'g77']
+        fortran_compilers = ['aixf77', 'g77', 'fortran']
         ars = ['ar']
     else:
         "prefer GNU tools on all other platforms"
@@ -299,7 +297,7 @@ def tool_list(platform, env):
         c_compilers = ['gcc', 'msvc', 'icc', 'cc']
         cxx_compilers = ['g++', 'msvc', 'icc', 'c++']
         assemblers = ['gas', 'nasm', 'masm']
-        fortran_compilers = ['g77', 'ifl']
+        fortran_compilers = ['g77', 'ifl', 'fortran']
         ars = ['ar', 'mslib']
 
     c_compiler = FindTool(c_compilers, env) or c_compilers[0]
diff --git a/src/engine/SCons/Tool/as.py b/src/engine/SCons/Tool/as.py
index 6cd4184..2bbc891 100644
--- a/src/engine/SCons/Tool/as.py
+++ b/src/engine/SCons/Tool/as.py
@@ -52,9 +52,11 @@ def generate(env):
 
     for suffix in ASSuffixes:
         static_obj.add_action(suffix, SCons.Defaults.ASAction)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
 
     for suffix in ASPPSuffixes:
         static_obj.add_action(suffix, SCons.Defaults.ASPPAction)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
 
     env['AS']        = env.Detect(assemblers) or 'as'
     env['ASFLAGS']   = SCons.Util.CLVar('')
diff --git a/src/engine/SCons/Tool/bcc32.py b/src/engine/SCons/Tool/bcc32.py
index 6d3acca..f891d45 100644
--- a/src/engine/SCons/Tool/bcc32.py
+++ b/src/engine/SCons/Tool/bcc32.py
@@ -58,6 +58,9 @@ def generate(env):
     for suffix in ['.c', '.cpp']:
         static_obj.add_action(suffix, SCons.Defaults.CAction)
         shared_obj.add_action(suffix, SCons.Defaults.ShCAction)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
+        shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)
+
     env['CC']        = 'bcc32'
     env['CCFLAGS']   = SCons.Util.CLVar('')
     env['CCCOM']     = '$CC -q $CCFLAGS $CPPFLAGS $_CPPDEFFLAGS $_CPPINCFLAGS -c -o $TARGET $SOURCES'
diff --git a/src/engine/SCons/Tool/c++.py b/src/engine/SCons/Tool/c++.py
index 8e0adfa..10bb1ac 100644
--- a/src/engine/SCons/Tool/c++.py
+++ b/src/engine/SCons/Tool/c++.py
@@ -65,6 +65,8 @@ def generate(env):
     for suffix in CXXSuffixes:
         static_obj.add_action(suffix, SCons.Defaults.CXXAction)
         shared_obj.add_action(suffix, SCons.Defaults.ShCXXAction)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
+        shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)
         
     env['CXX']        = 'c++'
     env['CXXFLAGS']   = SCons.Util.CLVar('$CCFLAGS')
diff --git a/src/engine/SCons/Tool/cc.py b/src/engine/SCons/Tool/cc.py
index 4c19c69..56c723d 100644
--- a/src/engine/SCons/Tool/cc.py
+++ b/src/engine/SCons/Tool/cc.py
@@ -49,6 +49,8 @@ def generate(env):
     for suffix in CSuffixes:
         static_obj.add_action(suffix, SCons.Defaults.CAction)
         shared_obj.add_action(suffix, SCons.Defaults.ShCAction)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
+        shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)
         
     env['CC']        = 'cc'
     env['CCFLAGS']   = SCons.Util.CLVar('')
diff --git a/src/engine/SCons/Tool/cvf.py b/src/engine/SCons/Tool/cvf.py
new file mode 100644
index 0000000..15db1da
--- /dev/null
+++ b/src/engine/SCons/Tool/cvf.py
@@ -0,0 +1,53 @@
+"""engine.SCons.Tool.cvf
+
+Tool-specific initialization for the Compaq Visual Fortran compiler.
+
+"""
+
+#
+# __COPYRIGHT__
+#
+# 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.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+import SCons.Util
+import fortran
+
+compilers = ['f90']
+
+def generate(env):
+    """Add Builders and construction variables for compaq visual fortran to an Environment."""
+
+    fortran.generate(env)
+
+    env['FORTRAN']        = 'f90'
+    env['FORTRANCOM']     = '$FORTRAN $FORTRANFLAGS $_FORTRANMODODFLAG $_FORTRANINCFLAGS /compile_only ${SOURCES.win32} /object:${TARGET.win32}'
+    env['FORTRANPPCOM']   = '$FORTRAN $FORTRANFLAGS $CPPFLAGS $_CPPDEFFLAGS $_FORTRANMODODFLAG $_FORTRANINCFLAGS /compile_only ${SOURCES.win32} /object:${TARGET.win32}'
+    env['SHFORTRANCOM']   = '$SHFORTRAN $SHFORTRANFLAGS $_FORTRANMODODFLAG $_FORTRANINCFLAGS /compile_only ${SOURCES.win32} /object:${TARGET.win32}'
+    env['SHFORTRANPPCOM'] = '$SHFORTRAN $SHFORTRANFLAGS $CPPFLAGS $_CPPDEFFLAGS $_FORTRANMODODFLAG $_FORTRANINCFLAGS /compile_only ${SOURCES.win32} /object:${TARGET.win32}'
+    env['OBJSUFFIX']      = '.obj'
+    env['FORTRANMODDIR'] = '${TARGET.dir}'
+    env['FORTRANMODDIRPREFIX'] = '/module:'
+    env['FORTRANMODDIRSUFFIX'] = ''
+
+def exists(env):
+    return env.Detect(compilers)
diff --git a/src/engine/SCons/Tool/dmd.py b/src/engine/SCons/Tool/dmd.py
index 758ed73..5d773c3 100644
--- a/src/engine/SCons/Tool/dmd.py
+++ b/src/engine/SCons/Tool/dmd.py
@@ -61,6 +61,7 @@ import string
 import SCons.Tool
 import SCons.Scanner.D
 import SCons.Builder
+import SCons.Defaults
 
 # Adapted from c++.py
 def isD(source):
@@ -86,6 +87,8 @@ def generate(env):
 
     static_obj.add_action('.d', '$DCOM')
     shared_obj.add_action('.d', '$DCOM')
+    static_obj.add_emitter('.d', SCons.Defaults.StaticObjectEmitter)
+    shared_obj.add_emitter('.d', SCons.Defaults.SharedObjectEmitter)
 
     env['DC'] = 'dmd'
     env['DCOM'] = '$DC $_DINCFLAGS $_DVERFLAGS $_DDEBUGFLAGS $_DFLAGS -c -of$TARGET $SOURCES'
diff --git a/src/engine/SCons/Tool/f77.py b/src/engine/SCons/Tool/f77.py
index f05a410..0651585 100644
--- a/src/engine/SCons/Tool/f77.py
+++ b/src/engine/SCons/Tool/f77.py
@@ -34,38 +34,80 @@ selection method.
 __revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
 
 import SCons.Defaults
+import SCons.Scanner.Fortran
 import SCons.Tool
 import SCons.Util
+import fortran
 
 compilers = ['f77']
 
-F77Suffixes = ['.f', '.for', '.FOR']
-F77PPSuffixes = ['.fpp', '.FPP']
-if SCons.Util.case_sensitive_suffixes('.f', '.F'):
-    F77PPSuffixes.append('.F')
+#
+F77Action = SCons.Action.Action("$F77COM")
+ShF77Action = SCons.Action.Action("$SHF77COM")
+F77PPAction = SCons.Action.Action("$F77PPCOM")
+ShF77PPAction = SCons.Action.Action("$SHF77PPCOM")
+
+#
+F77Suffixes = ['.f77']
+F77PPSuffixes = []
+if SCons.Util.case_sensitive_suffixes('.f77', '.F77'):
+    F77PPSuffixes.append('.F77')
 else:
-    F77Suffixes.append('.F')
+    F77Suffixes.append('.F77')
 
-def generate(env):
+#
+F77Scan = SCons.Scanner.Fortran.FortranScan("F77PATH")
+
+for suffix in F77Suffixes + F77PPSuffixes:
+    SCons.Defaults.ObjSourceScan.add_scanner(suffix, F77Scan)
+
+#
+F77Generator = fortran.VariableListGenerator('F77', 'FORTRAN', '_FORTRAND')
+F77FlagsGenerator = fortran.VariableListGenerator('F77FLAGS', 'FORTRANFLAGS')
+ShF77Generator = fortran.VariableListGenerator('SHF77', 'SHFORTRAN', 'F77', 'FORTRAN', '_FORTRAND')
+ShF77FlagsGenerator = fortran.VariableListGenerator('SHF77FLAGS', 'SHFORTRANFLAGS')
+
+def add_to_env(env):
     """Add Builders and construction variables for f77 to an Environment."""
+    env.AppendUnique(FORTRANSUFFIXES = F77Suffixes + F77PPSuffixes)
+
     static_obj, shared_obj = SCons.Tool.createObjBuilders(env)
 
     for suffix in F77Suffixes:
-        static_obj.add_action(suffix, SCons.Defaults.F77Action)
-        shared_obj.add_action(suffix, SCons.Defaults.ShF77Action)
+        static_obj.add_action(suffix, F77Action)
+        shared_obj.add_action(suffix, ShF77Action)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
+        shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)
 
     for suffix in F77PPSuffixes:
-        static_obj.add_action(suffix, SCons.Defaults.F77PPAction)
-        shared_obj.add_action(suffix, SCons.Defaults.ShF77PPAction)
-
-    env['F77']        = env.Detect(compilers) or 'f77'
-    env['F77FLAGS']   = SCons.Util.CLVar('')
-    env['F77COM']     = '$F77 $F77FLAGS $_F77INCFLAGS -c -o $TARGET $SOURCES'
-    env['F77PPCOM']   = '$F77 $F77FLAGS $CPPFLAGS $_CPPDEFFLAGS $_F77INCFLAGS -c -o $TARGET $SOURCES'
-    env['SHF77']      = '$F77'
-    env['SHF77FLAGS'] = SCons.Util.CLVar('$F77FLAGS')
-    env['SHF77COM']   = '$SHF77 $SHF77FLAGS $_F77INCFLAGS -c -o $TARGET $SOURCES'
-    env['SHF77PPCOM'] = '$SHF77 $SHF77FLAGS $CPPFLAGS $_CPPDEFFLAGS $_F77INCFLAGS -c -o $TARGET $SOURCES'
+        static_obj.add_action(suffix, F77PPAction)
+        shared_obj.add_action(suffix, ShF77PPAction)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
+        shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)
+
+    env['_F77G']      = F77Generator
+    env['_F77FLAGSG'] = F77FlagsGenerator
+    env['F77COM']     = '$_F77G $_F77FLAGSG $_F77INCFLAGS -c -o $TARGET $SOURCES'
+    env['F77PPCOM']   = '$_F77G $_F77FLAGSG $CPPFLAGS $_CPPDEFFLAGS $_F77INCFLAGS -c -o $TARGET $SOURCES'
+
+    env['_SHF77G']      = ShF77Generator
+    env['_SHF77FLAGSG'] = ShF77FlagsGenerator
+    env['SHF77COM']   = '$_SHF77G $_SHF77FLAGSG $_F77INCFLAGS -c -o $TARGET $SOURCES'
+    env['SHF77PPCOM'] = '$_SHF77G $_SHF77FLAGSG $CPPFLAGS $_CPPDEFFLAGS $_F77INCFLAGS -c -o $TARGET $SOURCES'
+
+    env['_F77INCFLAGS'] = '$( ${_concat(INCPREFIX, F77PATH, INCSUFFIX, __env__, RDirs)} $)'
+
+def generate(env):
+    fortran.add_to_env(env)
+
+    import f90
+    import f95
+    f90.add_to_env(env)
+    f95.add_to_env(env)
+
+    add_to_env(env)
+
+    env['_FORTRAND']        = env.Detect(compilers) or 'f77'
 
 def exists(env):
     return env.Detect(compilers)
diff --git a/src/engine/SCons/Tool/f90.py b/src/engine/SCons/Tool/f90.py
new file mode 100644
index 0000000..b00a76e
--- /dev/null
+++ b/src/engine/SCons/Tool/f90.py
@@ -0,0 +1,107 @@
+"""engine.SCons.Tool.f90
+
+Tool-specific initialization for the generic Posix f90 Fortran compiler.
+
+There normally shouldn't be any need to import this module directly.
+It will usually be imported through the generic SCons.Tool.Tool()
+selection method.
+
+"""
+
+#
+# __COPYRIGHT__
+#
+# 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.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+import SCons.Defaults
+import SCons.Scanner.Fortran
+import SCons.Tool
+import SCons.Util
+import fortran
+
+compilers = ['f90']
+
+#
+F90Action = SCons.Action.Action("$F90COM")
+ShF90Action = SCons.Action.Action("$SHF90COM")
+F90PPAction = SCons.Action.Action("$F90PPCOM")
+ShF90PPAction = SCons.Action.Action("$SHF90PPCOM")
+
+#
+F90Suffixes = ['.f90']
+F90PPSuffixes = []
+if SCons.Util.case_sensitive_suffixes('.f90', '.F90'):
+    F90PPSuffixes.append('.F90')
+else:
+    F90Suffixes.append('.F90')
+
+#
+F90Scan = SCons.Scanner.Fortran.FortranScan("F90PATH")
+
+for suffix in F90Suffixes + F90PPSuffixes:
+    SCons.Defaults.ObjSourceScan.add_scanner(suffix, F90Scan)
+
+#
+F90Generator = fortran.VariableListGenerator('F90', 'FORTRAN', '_FORTRAND')
+F90FlagsGenerator = fortran.VariableListGenerator('F90FLAGS', 'FORTRANFLAGS')
+ShF90Generator = fortran.VariableListGenerator('SHF90', 'SHFORTRAN', 'F90', 'FORTRAN', '_FORTRAND')
+ShF90FlagsGenerator = fortran.VariableListGenerator('SHF90FLAGS', 'SHFORTRANFLAGS')
+
+def add_to_env(env):
+    """Add Builders and construction variables for f90 to an Environment."""
+    env.AppendUnique(FORTRANSUFFIXES = F90Suffixes + F90PPSuffixes)
+
+    static_obj, shared_obj = SCons.Tool.createObjBuilders(env)
+
+    for suffix in F90Suffixes:
+        static_obj.add_action(suffix, F90Action)
+        shared_obj.add_action(suffix, ShF90Action)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
+        shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)
+
+    for suffix in F90PPSuffixes:
+        static_obj.add_action(suffix, F90PPAction)
+        shared_obj.add_action(suffix, ShF90PPAction)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
+        shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)
+  
+    env['_F90G']      = F90Generator
+    env['_F90FLAGSG'] = F90FlagsGenerator
+    env['F90COM']     = '$_F90G $_F90FLAGSG $_F90INCFLAGS $_FORTRANMODFLAG -c -o $TARGET $SOURCES'
+    env['F90PPCOM']   = '$_F90G $_F90FLAGSG $CPPFLAGS $_CPPDEFFLAGS $_F90INCFLAGS $_FORTRANMODFLAG -c -o $TARGET $SOURCES'
+
+    env['_SHF90G']      = ShF90Generator
+    env['_SHF90FLAGSG'] = ShF90FlagsGenerator
+    env['SHF90COM']   = '$_SHF90G $_SHF90FLAGSG $_F90INCFLAGS $_FORTRANMODFLAG -c -o $TARGET $SOURCES'
+    env['SHF90PPCOM'] = '$_SHF90G $_SHF90FLAGSG $CPPFLAGS $_CPPDEFFLAGS $_F90INCFLAGS $_FORTRANMODFLAG -c -o $TARGET $SOURCES'
+
+    env['_F90INCFLAGS'] = '$( ${_concat(INCPREFIX, F90PATH, INCSUFFIX, __env__, RDirs)} $)'
+
+def generate(env):
+    fortran.add_to_env(env)
+    add_to_env(env)
+
+    env['_FORTRAND'] = env.Detect(compilers) or 'f90'
+
+def exists(env):
+    return env.Detect(compilers)
diff --git a/src/engine/SCons/Tool/f95.py b/src/engine/SCons/Tool/f95.py
new file mode 100644
index 0000000..291c980
--- /dev/null
+++ b/src/engine/SCons/Tool/f95.py
@@ -0,0 +1,106 @@
+"""engine.SCons.Tool.f95
+
+Tool-specific initialization for the generic Posix f95 Fortran compiler.
+
+There normally shouldn't be any need to import this module directly.
+It will usually be imported through the generic SCons.Tool.Tool()
+selection method.
+
+"""
+
+#
+# __COPYRIGHT__
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
+# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+import SCons.Defaults
+import SCons.Tool
+import SCons.Util
+import fortran
+
+compilers = ['f95']
+
+#
+F95Action = SCons.Action.Action("$F95COM")
+ShF95Action = SCons.Action.Action("$SHF95COM")
+F95PPAction = SCons.Action.Action("$F95PPCOM")
+ShF95PPAction = SCons.Action.Action("$SHF95PPCOM")
+
+#
+F95Suffixes = ['.f95']
+F95PPSuffixes = []
+if SCons.Util.case_sensitive_suffixes('.f95', '.F95'):
+    F95PPSuffixes.append('.F95')
+else:
+    F95Suffixes.append('.F95')
+
+#
+F95Scan = SCons.Scanner.Fortran.FortranScan("F95PATH")
+
+for suffix in F95Suffixes + F95PPSuffixes:
+    SCons.Defaults.ObjSourceScan.add_scanner(suffix, F95Scan)
+
+#
+F95Generator = fortran.VariableListGenerator('F95', 'FORTRAN', '_FORTRAND')
+F95FlagsGenerator = fortran.VariableListGenerator('F95FLAGS', 'FORTRANFLAGS')
+ShF95Generator = fortran.VariableListGenerator('SHF95', 'SHFORTRAN', 'F95', 'FORTRAN', '_FORTRAND')
+ShF95FlagsGenerator = fortran.VariableListGenerator('SHF95FLAGS', 'SHFORTRANFLAGS')
+
+def add_to_env(env):
+    """Add Builders and construction variables for f95 to an Environment."""
+    env.AppendUnique(FORTRANSUFFIXES = F95Suffixes + F95PPSuffixes)
+
+    static_obj, shared_obj = SCons.Tool.createObjBuilders(env)
+
+    for suffix in F95Suffixes:
+        static_obj.add_action(suffix, F95Action)
+        shared_obj.add_action(suffix, ShF95Action)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
+        shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)
+
+    for suffix in F95PPSuffixes:
+        static_obj.add_action(suffix, F95PPAction)
+        shared_obj.add_action(suffix, ShF95PPAction)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
+        shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)
+
+    env['_F95G']      = F95Generator
+    env['_F95FLAGSG'] = F95FlagsGenerator
+    env['F95COM']     = '$_F95G $_F95FLAGSG $_F95INCFLAGS $_FORTRANMODFLAG -c -o $TARGET $SOURCES'
+    env['F95PPCOM']   = '$_F95G $_F95FLAGSG $CPPFLAGS $_CPPDEFFLAGS $_F95INCFLAGS $_FORTRANMODFLAG -c -o $TARGET $SOURCES'
+
+    env['_SHF95G']      = ShF95Generator
+    env['_SHF95FLAGSG'] = ShF95FlagsGenerator
+    env['SHF95COM']   = '$_SHF95G $_SHF95FLAGSG $_F95INCFLAGS $_FORTRANMODFLAG -c -o $TARGET $SOURCES'
+    env['SHF95PPCOM'] = '$_SHF95G $_SHF95FLAGSG $CPPFLAGS $_CPPDEFFLAGS $_F95INCFLAGS $_FORTRANMODFLAG -c -o $TARGET $SOURCES'
+
+    env['_F95INCFLAGS'] = '$( ${_concat(INCPREFIX, F95PATH, INCSUFFIX, __env__, RDirs)} $)'
+
+def generate(env):
+    fortran.add_to_env(env)
+    add_to_env(env)
+
+    env['_FORTRAND'] = env.Detect(compilers) or 'f95'
+
+def exists(env):
+    return env.Detect(compilers)
diff --git a/src/engine/SCons/Tool/fortran.py b/src/engine/SCons/Tool/fortran.py
new file mode 100644
index 0000000..5e2b5eb
--- /dev/null
+++ b/src/engine/SCons/Tool/fortran.py
@@ -0,0 +1,165 @@
+"""SCons.Tool.fortran
+
+Tool-specific initialization for a generic Posix f77/f90 Fortran compiler.
+
+There normally shouldn't be any need to import this module directly.
+It will usually be imported through the generic SCons.Tool.Tool()
+selection method.
+
+"""
+
+#
+# __COPYRIGHT__
+#
+# 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.
+#
+
+__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
+
+import re
+import string
+
+import SCons.Action
+import SCons.Defaults
+import SCons.Scanner.Fortran
+import SCons.Tool
+import SCons.Util
+
+compilers = ['f95', 'f90', 'f77']
+
+FortranAction = SCons.Action.Action("$FORTRANCOM")
+ShFortranAction = SCons.Action.Action("$SHFORTRANCOM")
+FortranPPAction = SCons.Action.Action("$FORTRANPPCOM")
+ShFortranPPAction = SCons.Action.Action("$SHFORTRANPPCOM")
+
+#
+#  Not yet sure how to deal with fortran pre-processor functions.
+#  Different compilers do this differently in modern fortran.  Some still
+#  rely on the c pre-processor, some (like cvf, ivf) have their own
+#  pre-processor technology and use intermediary suffixes (.i90)
+#
+FortranSuffixes = [".f", ".for", ".ftn", ]
+FortranPPSuffixes = ['.fpp', '.FPP']
+upper_case = [".F", ".FOR", ".FTN"]
+if SCons.Util.case_sensitive_suffixes('.f', '.F'):
+    FortranPPSuffixes.extend(upper_case)
+else:
+    FortranSuffixes.extend(upper_case)
+
+#
+FortranScan = SCons.Scanner.Fortran.FortranScan("FORTRANPATH")
+
+for suffix in FortranSuffixes + FortranPPSuffixes:
+    SCons.Defaults.ObjSourceScan.add_scanner(suffix, FortranScan)
+
+#
+def _fortranEmitter(target, source, env):
+    node = source[0].rfile()
+    if not node.exists() and not node.is_derived():
+       print "Could not locate " + str(node.name)
+       return ([], [])
+    mod_regex = """(?i)^\s*MODULE\s+(?!PROCEDURE)(\w+)"""
+    cre = re.compile(mod_regex,re.M)
+    # Retrieve all USE'd module names
+    modules = cre.findall(node.get_contents())
+    # Remove unique items from the list
+    modules = SCons.Util.unique(modules)
+    # Convert module name to a .mod filename
+    suffix = env.subst('$FORTRANMODSUFFIX')
+    modules = map(lambda x, s=suffix: string.lower(x) + s, modules)
+    for m in modules:
+       target.append(m)
+    return (target, source)
+
+def FortranEmitter(target, source, env):
+    target, source = _fortranEmitter(target, source, env)
+    return SCons.Defaults.StaticObjectEmitter(target, source, env)
+
+def ShFortranEmitter(target, source, env):
+    target, source = _fortranEmitter(target, source, env)
+    return SCons.Defaults.SharedObjectEmitter(target, source, env)
+
+class VariableListGenerator:
+    def __init__(self, *variablelist):
+        self.variablelist = variablelist
+    def __call__(self, env, target, source, for_signature):
+        for v in self.variablelist:
+            try: return env[v]
+            except KeyError: pass
+        return ''
+
+FortranGenerator = VariableListGenerator('FORTRAN', 'F77', '_FORTRAND')
+FortranFlagsGenerator = VariableListGenerator('FORTRANFLAGS', 'F77FLAGS')
+ShFortranGenerator = VariableListGenerator('SHFORTRAN', 'SHF77', 'FORTRAN', 'F77', '_FORTRAND')
+ShFortranFlagsGenerator = VariableListGenerator('SHFORTRANFLAGS', 'SHF77FLAGS')
+
+def add_to_env(env):
+    """Add Builders and construction variables for Fortran to an Environment."""
+
+    env['_FORTRANG']      = FortranGenerator
+    env['_FORTRANFLAGSG'] = FortranFlagsGenerator
+    env['FORTRANCOM']     = '$_FORTRANG $_FORTRANFLAGSG $_FORTRANINCFLAGS $_FORTRANMODFLAG -c -o $TARGET $SOURCES'
+    env['FORTRANPPCOM']   = '$_FORTRANG $_FORTRANFLAGSG $CPPFLAGS $_CPPDEFFLAGS $_FORTRANINCFLAGS $_FORTRANMODFLAG -c -o $TARGET $SOURCES'
+
+    env['_SHFORTRANG']      = ShFortranGenerator
+    env['_SHFORTRANFLAGSG'] = ShFortranFlagsGenerator
+    env['SHFORTRANCOM']   = '$_SHFORTRANG $_SHFORTRANFLAGSG $_FORTRANINCFLAGS $_FORTRANMODFLAG -c -o $TARGET $SOURCES'
+    env['SHFORTRANPPCOM'] = '$_SHFORTRANG $_SHFORTRANFLAGSG $CPPFLAGS $_CPPDEFFLAGS $_FORTRANINCFLAGS $_FORTRANMODFLAG -c -o $TARGET $SOURCES'
+
+    env['_FORTRANINCFLAGS'] = '$( ${_concat(INCPREFIX, FORTRANPATH, INCSUFFIX, __env__, RDirs)} $)'
+
+    env['FORTRANMODPREFIX'] = ''     # like $LIBPREFIX
+    env['FORTRANMODSUFFIX'] = '.mod' # like $LIBSUFFIX
+
+    env['FORTRANMODDIR'] = ''          # where the compiler should place .mod files
+    env['FORTRANMODDIRPREFIX'] = ''    # some prefix to $FORTRANMODDIR - similar to $INCPREFIX
+    env['FORTRANMODDIRSUFFIX'] = ''    # some suffix to $FORTRANMODDIR - similar to $INCSUFFIX
+    env['_FORTRANMODFLAG'] = '$( ${_concat(FORTRANMODDIRPREFIX, FORTRANMODDIR, FORTRANMODDIRSUFFIX, __env__)} $)'
+
+    env.AppendUnique(FORTRANSUFFIXES = FortranSuffixes + FortranPPSuffixes)
+
+    static_obj, shared_obj = SCons.Tool.createObjBuilders(env)
+
+    for suffix in FortranSuffixes:
+        static_obj.add_action(suffix, FortranAction)
+        shared_obj.add_action(suffix, ShFortranAction)
+        static_obj.add_emitter(suffix, FortranEmitter)
+        shared_obj.add_emitter(suffix, ShFortranEmitter)
+
+    for suffix in FortranPPSuffixes:
+        static_obj.add_action(suffix, FortranPPAction)
+        shared_obj.add_action(suffix, ShFortranPPAction)
+        static_obj.add_emitter(suffix, FortranEmitter)
+        shared_obj.add_emitter(suffix, ShFortranEmitter)
+
+def generate(env):
+    import f77
+    import f90
+    import f95
+    f77.add_to_env(env)
+    f90.add_to_env(env)
+    f95.add_to_env(env)
+
+    add_to_env(env)
+
+    env['_FORTRAND'] = env.Detect(compilers) or 'f77'
+
+def exists(env):
+    return env.Detect(compilers)
diff --git a/src/engine/SCons/Tool/g77.py b/src/engine/SCons/Tool/g77.py
index 549dffb..f481546 100644
--- a/src/engine/SCons/Tool/g77.py
+++ b/src/engine/SCons/Tool/g77.py
@@ -41,7 +41,7 @@ def generate(env):
     """Add Builders and construction variables for g77 to an Environment."""
     f77.generate(env)
 
-    env['F77'] = env.Detect(compilers) or 'g77'
+    env['_FORTRAND'] = env.Detect(compilers) or 'g77'
 
 def exists(env):
     return env.Detect(compilers)
diff --git a/src/engine/SCons/Tool/masm.py b/src/engine/SCons/Tool/masm.py
index 9fa3354..6841815 100644
--- a/src/engine/SCons/Tool/masm.py
+++ b/src/engine/SCons/Tool/masm.py
@@ -51,10 +51,14 @@ def generate(env):
     for suffix in ASSuffixes:
         static_obj.add_action(suffix, SCons.Defaults.ASAction)
         shared_obj.add_action(suffix, SCons.Defaults.ASAction)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
+        shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)
 
     for suffix in ASPPSuffixes:
         static_obj.add_action(suffix, SCons.Defaults.ASPPAction)
         shared_obj.add_action(suffix, SCons.Defaults.ASPPAction)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
+        shared_obj.add_emitter(suffix, SCons.Defaults.SharedObjectEmitter)
 
     env['AS']        = 'ml'
     env['ASFLAGS']   = SCons.Util.CLVar('/nologo')
diff --git a/src/engine/SCons/Tool/msvc.py b/src/engine/SCons/Tool/msvc.py
index a32c503..5ab3779 100644
--- a/src/engine/SCons/Tool/msvc.py
+++ b/src/engine/SCons/Tool/msvc.py
@@ -409,10 +409,14 @@ def generate(env):
     for suffix in CSuffixes:
         static_obj.add_action(suffix, SCons.Defaults.CAction)
         shared_obj.add_action(suffix, SCons.Defaults.ShCAction)
+        static_obj.add_emitter(suffix, static_object_emitter)
+        shared_obj.add_emitter(suffix, shared_object_emitter)
 
     for suffix in CXXSuffixes:
         static_obj.add_action(suffix, SCons.Defaults.CXXAction)
         shared_obj.add_action(suffix, SCons.Defaults.ShCXXAction)
+        static_obj.add_emitter(suffix, static_object_emitter)
+        shared_obj.add_emitter(suffix, shared_object_emitter)
 
     env['CCPDBFLAGS'] = SCons.Util.CLVar(['${(PDB and "/Z7") or ""}'])
     env['CCPCHFLAGS'] = SCons.Util.CLVar(['${(PCH and "/Yu%s /Fp%s"%(PCHSTOP or "",File(PCH))) or ""}'])
@@ -433,8 +437,8 @@ def generate(env):
     env['CPPDEFSUFFIX']  = ''
     env['INCPREFIX']  = '/I'
     env['INCSUFFIX']  = ''
-    env.Append(OBJEMITTER = [static_object_emitter])
-    env.Append(SHOBJEMITTER = [shared_object_emitter])
+#    env.Append(OBJEMITTER = [static_object_emitter])
+#    env.Append(SHOBJEMITTER = [shared_object_emitter])
     env['STATIC_AND_SHARED_OBJECTS_ARE_THE_SAME'] = 1
 
     env['RC'] = 'rc'
diff --git a/src/engine/SCons/Tool/nasm.py b/src/engine/SCons/Tool/nasm.py
index 6b74341..7dd3b63 100644
--- a/src/engine/SCons/Tool/nasm.py
+++ b/src/engine/SCons/Tool/nasm.py
@@ -50,9 +50,11 @@ def generate(env):
 
     for suffix in ASSuffixes:
         static_obj.add_action(suffix, SCons.Defaults.ASAction)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
 
     for suffix in ASPPSuffixes:
         static_obj.add_action(suffix, SCons.Defaults.ASPPAction)
+        static_obj.add_emitter(suffix, SCons.Defaults.StaticObjectEmitter)
 
     env['AS']        = 'nasm'
     env['ASFLAGS']   = SCons.Util.CLVar('')
diff --git a/src/engine/SCons/Util.py b/src/engine/SCons/Util.py
index 49e52ff..e2399a8 100644
--- a/src/engine/SCons/Util.py
+++ b/src/engine/SCons/Util.py
@@ -638,7 +638,7 @@ def scons_subst_list(strSubst, env, mode=SUBST_RAW, target=None, source=None, di
     class ListSubber(UserList.UserList):
         """A class to construct the results of a scons_subst_list() call.
 
-        Like StringSubber, this class binds a specific construction 
+        Like StringSubber, this class binds a specific construction
         environment, mode, target and source with two methods
         (substitute() and expand()) that handle the expansion.
 
@@ -774,7 +774,7 @@ def scons_subst_list(strSubst, env, mode=SUBST_RAW, target=None, source=None, di
             """Append the string x to the end of the current last word
             in the result.  If that is not possible, then just add
             it as a new word.  Make sure the entire concatenated string
-            inherits the object attributes of x (in particular, the 
+            inherits the object attributes of x (in particular, the
             escape function) by wrapping it as CmdStringHolder."""
 
             if not self.in_strip or self.mode != SUBST_SIG:
@@ -934,17 +934,17 @@ class Proxy:
     subject.  So, for the benefit of the python newbie, what does
     this really mean?  Well, it means that you can take an object, let's
     call it 'objA', and wrap it in this Proxy class, with a statement
-    like this 
+    like this
 
-                 proxyObj = Proxy(objA),   
+                 proxyObj = Proxy(objA),
 
-    Then, if in the future, you do something like this  
+    Then, if in the future, you do something like this
 
-                 x = proxyObj.var1, 
+                 x = proxyObj.var1,
+
+    since Proxy does not have a 'var1' attribute (but presumably objA does),
+    the request actually is equivalent to saying
 
-    since Proxy does not have a 'var1' attribute (but presumably objA does), 
-    the request actually is equivalent to saying 
-                
                  x = objA.var1
 
     Inherit from this class to create a Proxy."""
@@ -1141,7 +1141,7 @@ def PrependPath(oldpath, newpath, sep = os.pathsep):
 
     normpaths = []
     paths = []
-    # now we add them only of they are unique
+    # now we add them only if they are unique
     for path in newpaths:
         normpath = os.path.normpath(os.path.normcase(path))
         if path and not normpath in normpaths:
@@ -1317,3 +1317,74 @@ def adjustixes(fname, pre, suf):
     if suf and not splitext(fname)[1] and fname[-len(suf):] != suf:
             fname = fname + suf
     return fname
+
+
+def unique(s):
+    """Return a list of the elements in s, but without duplicates.
+
+    For example, unique([1,2,3,1,2,3]) is some permutation of [1,2,3],
+    unique("abcabc") some permutation of ["a", "b", "c"], and
+    unique(([1, 2], [2, 3], [1, 2])) some permutation of
+    [[2, 3], [1, 2]].
+
+    For best speed, all sequence elements should be hashable.  Then
+    unique() will usually work in linear time.
+
+    If not possible, the sequence elements should enjoy a total
+    ordering, and if list(s).sort() doesn't raise TypeError it's
+    assumed that they do enjoy a total ordering.  Then unique() will
+    usually work in O(N*log2(N)) time.
+
+    If that's not possible either, the sequence elements must support
+    equality-testing.  Then unique() will usually work in quadratic
+    time.
+    """
+
+    n = len(s)
+    if n == 0:
+        return []
+
+    # Try using a dict first, as that's the fastest and will usually
+    # work.  If it doesn't work, it will usually fail quickly, so it
+    # usually doesn't cost much to *try* it.  It requires that all the
+    # sequence elements be hashable, and support equality comparison.
+    u = {}
+    try:
+        for x in s:
+            u[x] = 1
+    except TypeError:
+        del u  # move on to the next method
+    else:
+        return u.keys()
+
+    # We can't hash all the elements.  Second fastest is to sort,
+    # which brings the equal elements together; then duplicates are
+    # easy to weed out in a single pass.
+    # NOTE:  Python's list.sort() was designed to be efficient in the
+    # presence of many duplicate elements.  This isn't true of all
+    # sort functions in all languages or libraries, so this approach
+    # is more effective in Python than it may be elsewhere.
+    try:
+        t = list(s)
+        t.sort()
+    except TypeError:
+        del t  # move on to the next method
+    else:
+        assert n > 0
+        last = t[0]
+        lasti = i = 1
+        while i < n:
+            if t[i] != last:
+                t[lasti] = last = t[i]
+                lasti = lasti + 1
+            i = i + 1
+        return t[:lasti]
+
+    # Brute force is all that's left.
+    u = []
+    for x in s:
+        if x not in u:
+            u.append(x)
+    return u
+
+