Compile everything at once with --release

1 files changed, 236 insertions, 0 deletions

diff --git a/site_scons/site_tools/mfprogram/__init__.py b/site_scons/site_tools/mfprogram/__init__.py
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+++ b/site_scons/site_tools/mfprogram/__init__.py
@@ -0,0 +1,236 @@
+#
+# Copyright (c) 2010 Western Digital Corporation
+# Alan Somers asomers (at) gmail (dot) com
+#
+# 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.
+#
+
+####
+import os
+import new
+import sys
+## 
+import SCons
+
+if sys.version_info < (2,6,0):
+    from relpath import relpath
+else:
+    from os.path import relpath
+
+
+def sc_relpath(src, destdir):
+    """Like relpath but aware of SCons convention regarding '#' in pathnames"""
+    if src[0] == '#':
+        return relpath(src[1:], destdir)
+    else:
+        return relpath(os.path.join(destdir, src), destdir)
+
+
+
+class MF_Executor(SCons.Executor.Executor):
+    """Custom Executor that can scan each target file for its dependencies
+    individually, rather than giving every target the same deps.
+    Assumes that there is a one-to-one relationship between sources and targets
+    and the targets have the same basenames as their respective sources
+    ie. [[foo.o, bar.o], [foo.c, bar.c]]"""
+    def scan(self, scanner, node_list):
+        tgt_names = [os.path.splitext(
+                        os.path.basename(str(i)))[0] for i in self.targets]
+        env = self.get_build_env()
+
+        if scanner:
+            for node in node_list:
+                tgt = \
+                   self.targets[tgt_names.index(
+                                    os.path.splitext(
+                                        os.path.basename(str(node)))[0])]
+                node.disambiguate()
+                s = scanner.select(node)
+                if not s:
+                    continue
+                path = self.get_build_scanner_path(s)
+                tgt.add_to_implicit(node.get_implicit_deps(env, s, path))
+        else:
+            kw = self.get_kw()
+            for node in node_list:
+                tgt = \
+                   self.targets[tgt_names.index(
+                                    os.path.splitext(
+                                        os.path.basename(str(node)))[0])]
+                node.disambiguate()
+                scanner = node.get_env_scanner(env, kw)
+                if not scanner:
+                    continue
+                scanner = scanner.select(node)
+                if not scanner:
+                    continue
+                path = self.get_build_scanner_path(scanner)
+                tgt.add_to_implicit(node.get_implicit_deps(env, scanner, path))
+
+
+def MF_get_single_executor(self, env, tlist, slist, executor_kw):
+    if not self.action:
+        raise UserError, "Builder %s must have an action to build %s." % \
+                (self.get_name(env or self.env), map(str,tlist))
+    return MF_Executor(self.action, env, [], tlist, slist, executor_kw)
+
+def exists(env):
+    return env.WhereIs(env.subst['$CC']) or env.WhereIs(env.subst['$CXX'])
+
+def MFProgramEmitter(target, source, env):
+    """Ensures that target list is complete, and does validity checking.  Sets precious"""
+    if len(target) == 1 and len(source) > 1:
+        #Looks like the user specified many sources and SCons created 1 target
+        #targets are implicit, but the builder doesn't know how to handle 
+        #suffixes for multiple target files, so we'll do it here
+        objdir = env.get('OBJDIR', '')
+        #target = [os.path.join(
+        #    objdir, 
+        #        os.path.splitext(
+        #            os.path.basename(str(i)))[0] + '.o' ) for i in source]
+    elif len(source) == 1 and 'OBJDIR' in env:
+        target = os.path.join(
+            env['OBJDIR'], 
+                os.path.splitext(
+                    os.path.basename(str(source[0])))[0] + '.o' )
+    else:
+        #targets are explicit, we need to check their validity
+        tgt_names = [os.path.splitext(
+                        os.path.basename(str(i)))[0] for i in target]
+        src_names = [os.path.splitext(
+                        os.path.basename(str(i)))[0] for i in source]
+        tgt_dirs = [os.path.dirname(str(i)) for i in target]
+        if sorted(tgt_names) != sorted(src_names):
+            raise ValueError, "target files do not have obvious one-one relationship to source files"
+        if len(set(src_names)) != len(src_names):
+            raise ValueError, "source files may not include identically named files in different directories"
+        if len(set(tgt_dirs)) != 1:
+            raise ValueError, "Target files must all be in same directory"
+
+    for t in target:
+        env.Precious(t)
+    return target, source
+
+def MFProgramGenerator(source, target, env, for_signature):
+    #Rebuild everything if 
+    #   a) the number of dependencies has changed
+    #   b) any target does not exist
+    #   c) the build command has changed
+    #Else rebuild only those c files that have changed_since_last_build
+    #The signature of this builder should always be the same, because the
+    #multifile compile is always functionally equivalent to rebuilding
+    #everything
+    
+    if for_signature:
+        pared_sources = source
+    else:
+        #First a sanity check
+        assert len(set([os.path.splitext(str(i))[1] for i in source])) == 1, \
+                "All source files must have the same extension."
+        pared_sources = []
+        src_names = [os.path.splitext(os.path.basename(str(i)))[0] 
+                        for i in source]
+        tgt_names = [os.path.splitext(os.path.basename(str(t)))[0] 
+                        for t in target]
+        ni = target[0].get_binfo()
+        oi = target[0].get_stored_info().binfo
+        if ni.bactsig != oi.bactsig:
+            #Command line has changed
+            pared_sources = source
+        else:
+            for i in range(len(tgt_names)):
+                t = target[i]
+                tgt_name = tgt_names[i]
+                if not t.exists():
+                    #a target does not exist
+                    pared_sources = source
+                    break
+                bi = t.get_stored_info().binfo
+                then = bi.bsourcesigs + bi.bdependsigs + bi.bimplicitsigs
+                children = t.children()
+                if len(children) != len(then):
+                    #the number of dependencies has changed
+                    pared_sources = source
+                    break
+                for child, prev_ni in zip(children, then):
+                    if child.changed_since_last_build(t, prev_ni) and \
+                        not t in pared_sources:
+                        #If child is a source file, not an explicit or implicit
+                        #dependency, then it is not truly a dependency of any target
+                        #except that with the same basename.  This is a limitation
+                        #of SCons.node, which assumes that all sources of a Node
+                        #are dependencies of all targets.  So we check for that case
+                        #here and only rebuild as necessary.
+                        src_name = os.path.splitext(os.path.basename(str(child)))[0]
+                        if src_name not in tgt_names or src_name == tgt_name:
+                            s = source[src_names.index(tgt_name)]
+                            pared_sources.append(s)
+    assert len(pared_sources) > 0
+    destdir = str(target[0].dir)
+    #finding sconscript_dir is a bit of a hack.  It assumes that the source
+    #files are always going to be in the same directory as the SConscript file
+    #which is not necessarily true.  BUG BY Alan Somers
+    sconscript_dir = os.path.dirname(str(pared_sources[0]))
+    prefixed_sources = [relpath(str(i), destdir) for i in pared_sources]
+    prefixed_sources_str = ' '.join([str(i) for i in prefixed_sources])
+    lang_ext = os.path.splitext(prefixed_sources[0])[1]
+    tgt_names2 = [os.path.splitext(os.path.basename(str(t)))[0] 
+                for t in target]
+
+    _CPPPATH = []
+    if 'CPPPATH' in env:
+        for i in env['CPPPATH']:
+            #if i[0] == '#':
+            ##_CPPPATH.append(relpath(i[1:], destdir))
+            _CPPPATH.append(i)
+            #else:
+            #    _CPPPATH.append(relpath(os.path.join(sconscript_dir, i), 
+            #                            destdir))
+    _CPPINCFLAGS = ['-I' + i for i in _CPPPATH]
+    _CCOMCOM = '$CPPFLAGS $_CPPDEFFLAGS %s' % ' '.join(_CPPINCFLAGS)
+
+    libstr = ""
+    for t in env['LIBS']:
+        libstr += ("-l"+t+" ")
+
+    if lang_ext == '.c' :
+        _CCCOM = 'cd %s && $CC $CFLAGS $CCFLAGS %s %s $LINKFLAGS %s -o %s' % \
+                    (destdir, _CCOMCOM, prefixed_sources_str, libstr, tgt_names2[0])
+        #XXX BUG BY Alan Somers.  $CCCOMSTR gets substituted using the full list of target files,
+        #not prefixed_sources
+        cmd = SCons.Script.Action(env.subst(_CCCOM), "$CCCOMSTR")
+    elif lang_ext in ['.cc', '.cpp']:
+        _CXXCOM = 'cd %s && $CXX $CXXFLAGS $CCFLAGS %s %s $LINKFLAGS %s -o %s' % \
+                    (destdir, _CCOMCOM, prefixed_sources_str, libstr, tgt_names2[0])
+        cmd = SCons.Script.Action(env.subst(_CXXCOM), "$CXXCOMSTR")
+    else:
+        assert False, "Unknown source file extension %s" % lang_ext
+    return cmd
+
+def generate(env):
+    """Adds the MFObject builder to your environment"""
+    MFProgramBld = env.Builder(generator = MFProgramGenerator, 
+                              emitter = MFProgramEmitter,
+                              suffix = '.o', 
+                              source_scanner=SCons.Tool.SourceFileScanner)
+    MFProgramBld.get_single_executor = new.instancemethod(MF_get_single_executor, 
+                        MFProgramBld, MFProgramBld.__class__)
+
+    env.Append(BUILDERS = {'MFProgram': MFProgramBld})
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