# We need to ensure our host tools get run during build, not the freshly
# built cross-tools (this will not work), so we introduce HOSTPYTHON and HOSTPGEN.
# Signed-Off: Michael 'Mickey' Lauer <mickey@vanille-media.de>

Index: Python-2.7.1/setup.py
===================================================================
--- Python-2.7.1.orig/setup.py	2010-12-27 13:16:38.032631011 -0500
+++ Python-2.7.1/setup.py	2010-12-27 13:16:50.130290766 -0500
@@ -313,6 +313,7 @@
             self.failed.append(ext.name)
             self.announce('*** WARNING: renaming "%s" since importing it'
                           ' failed: %s' % (ext.name, why), level=3)
+            return
             assert not self.inplace
             basename, tail = os.path.splitext(ext_filename)
             newname = basename + "_failed" + tail
@@ -347,8 +348,8 @@
 
     def detect_modules(self):
         # Ensure that /usr/local is always used
-        add_dir_to_list(self.compiler.library_dirs, '/usr/local/lib')
-        add_dir_to_list(self.compiler.include_dirs, '/usr/local/include')
+        # add_dir_to_list(self.compiler.library_dirs, '/usr/local/lib')
+        # add_dir_to_list(self.compiler.include_dirs, '/usr/local/include')
 
         # Add paths specified in the environment variables LDFLAGS and
         # CPPFLAGS for header and library files.
@@ -452,6 +453,9 @@
 
         # XXX Omitted modules: gl, pure, dl, SGI-specific modules
 
+        lib_dirs = [ os.getenv( "STAGING_LIBDIR" ) ]
+        inc_dirs = [ os.getenv( "STAGING_INCDIR" ) ]
+
         #
         # The following modules are all pretty straightforward, and compile
         # on pretty much any POSIXish platform.
Index: Python-2.7.1/Makefile.pre.in
===================================================================
--- Python-2.7.1.orig/Makefile.pre.in	2010-12-27 13:16:38.022628181 -0500
+++ Python-2.7.1/Makefile.pre.in	2010-12-27 13:17:31.870473931 -0500
@@ -201,6 +201,7 @@
 
 ##########################################################################
 # Grammar
+GRAMMAR_STAMP=	$(srcdir)/grammar-stamp
 GRAMMAR_H=	$(srcdir)/Include/graminit.h
 GRAMMAR_C=	$(srcdir)/Python/graminit.c
 GRAMMAR_INPUT=	$(srcdir)/Grammar/Grammar
@@ -380,7 +381,7 @@
 	$(MAKE) all CFLAGS="$(CFLAGS) -fprofile-generate" LIBS="$(LIBS) -lgcov"
 
 run_profile_task:
-	./$(BUILDPYTHON) $(PROFILE_TASK)
+	$(HOSTPYTHON) $(PROFILE_TASK)
 
 build_all_use_profile:
 	$(MAKE) all CFLAGS="$(CFLAGS) -fprofile-use"
@@ -398,14 +399,14 @@
 			$(BLDLIBRARY) $(LIBS) $(MODLIBS) $(SYSLIBS) $(LDLAST)
 
 platform: $(BUILDPYTHON)
-	$(RUNSHARED) ./$(BUILDPYTHON) -E -c 'import sys ; from sysconfig import get_platform ; print get_platform()+"-"+sys.version[0:3]' >platform
+	$(RUNSHARED) $(HOSTPYTHON) -E -c 'import sys ; from sysconfig import get_platform ; print get_platform()+"-"+sys.version[0:3]' >platform
 
 
 # Build the shared modules
 sharedmods: $(BUILDPYTHON)
 	@case $$MAKEFLAGS in \
-	*s*) $(RUNSHARED) CC='$(CC)' LDSHARED='$(BLDSHARED)' OPT='$(OPT)' ./$(BUILDPYTHON) -E $(srcdir)/setup.py -q build;; \
-	*) $(RUNSHARED) CC='$(CC)' LDSHARED='$(BLDSHARED)' OPT='$(OPT)' ./$(BUILDPYTHON) -E $(srcdir)/setup.py build;; \
+	*s*) $(RUNSHARED) CC='$(CC)' LDSHARED='$(BLDSHARED)' OPT='$(OPT)' $(HOSTPYTHON) -E $(srcdir)/setup.py -q build;; \
+	*) $(RUNSHARED) CC='$(CC)' LDSHARED='$(BLDSHARED)' OPT='$(OPT)' $(HOSTPYTHON) -E $(srcdir)/setup.py build;; \
 	esac
 
 # Build static library
@@ -535,10 +536,24 @@
 Modules/python.o: $(srcdir)/Modules/python.c
 	$(MAINCC) -c $(PY_CFLAGS) -o $@ $(srcdir)/Modules/python.c
 
+# GNU "make" interprets rules with two dependents as two copies of the rule.
+#
+# In a parallel build this can lead to pgen being run twice, once for each of
+# GRAMMAR_H and GRAMMAR_C, leading to race conditions in which the compiler
+# reads a partially-overwritten copy of one of these files, leading to syntax
+# errors (or linker errors if the fragment happens to be syntactically valid C)
+#
+# See http://www.gnu.org/software/hello/manual/automake/Multiple-Outputs.html
+# for more information.
+#
+# Introduce ".grammar-stamp" as a contrived single output from PGEN to avoid
+# this:
+$(GRAMMAR_H) $(GRAMMAR_C): $(GRAMMAR_STAMP)
 
-$(GRAMMAR_H) $(GRAMMAR_C): $(PGEN) $(GRAMMAR_INPUT)
+$(GRAMMAR_STAMP): $(PGEN) $(GRAMMAR_INPUT)
 		-@$(INSTALL) -d Include
 		-$(PGEN) $(GRAMMAR_INPUT) $(GRAMMAR_H) $(GRAMMAR_C)
+		touch $(GRAMMAR_STAMP)
 
 $(PGEN):	$(PGENOBJS)
 		$(CC) $(OPT) $(LDFLAGS) $(PGENOBJS) $(LIBS) -o $(PGEN)
@@ -921,25 +936,25 @@
 	done
 	$(INSTALL_DATA) $(srcdir)/LICENSE $(DESTDIR)$(LIBDEST)/LICENSE.txt
 	PYTHONPATH=$(DESTDIR)$(LIBDEST)  $(RUNSHARED) \
-		./$(BUILDPYTHON) -Wi -tt $(DESTDIR)$(LIBDEST)/compileall.py \
+		$(HOSTPYTHON) -Wi -tt $(DESTDIR)$(LIBDEST)/compileall.py \
 		-d $(LIBDEST) -f \
 		-x 'bad_coding|badsyntax|site-packages|lib2to3/tests/data' \
 		$(DESTDIR)$(LIBDEST)
 	PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
-		./$(BUILDPYTHON) -Wi -tt -O $(DESTDIR)$(LIBDEST)/compileall.py \
+		$(HOSTPYTHON) -Wi -tt -O $(DESTDIR)$(LIBDEST)/compileall.py \
 		-d $(LIBDEST) -f \
 		-x 'bad_coding|badsyntax|site-packages|lib2to3/tests/data' \
 		$(DESTDIR)$(LIBDEST)
 	-PYTHONPATH=$(DESTDIR)$(LIBDEST)  $(RUNSHARED) \
-		./$(BUILDPYTHON) -Wi -t $(DESTDIR)$(LIBDEST)/compileall.py \
+		$(HOSTPYTHON) -Wi -t $(DESTDIR)$(LIBDEST)/compileall.py \
 		-d $(LIBDEST)/site-packages -f \
 		-x badsyntax $(DESTDIR)$(LIBDEST)/site-packages
 	-PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
-		./$(BUILDPYTHON) -Wi -t -O $(DESTDIR)$(LIBDEST)/compileall.py \
+		$(HOSTPYTHON) -Wi -t -O $(DESTDIR)$(LIBDEST)/compileall.py \
 		-d $(LIBDEST)/site-packages -f \
 		-x badsyntax $(DESTDIR)$(LIBDEST)/site-packages
 	-PYTHONPATH=$(DESTDIR)$(LIBDEST) $(RUNSHARED) \
-		./$(BUILDPYTHON) -Wi -t -c "import lib2to3.pygram, lib2to3.patcomp;lib2to3.patcomp.PatternCompiler()"
+		$(HOSTPYTHON) -Wi -t -c "import lib2to3.pygram, lib2to3.patcomp;lib2to3.patcomp.PatternCompiler()"
 
 # Create the PLATDIR source directory, if one wasn't distributed..
 $(srcdir)/Lib/$(PLATDIR):
@@ -1044,7 +1059,7 @@
 # Install the dynamically loadable modules
 # This goes into $(exec_prefix)
 sharedinstall: sharedmods
-	$(RUNSHARED) ./$(BUILDPYTHON) -E $(srcdir)/setup.py install \
+	$(RUNSHARED) $(HOSTPYTHON) -E $(srcdir)/setup.py install \
 	   	--prefix=$(prefix) \
 		--install-scripts=$(BINDIR) \
 		--install-platlib=$(DESTSHARED) \
@@ -1117,7 +1132,7 @@
 # This installs a few of the useful scripts in Tools/scripts
 scriptsinstall:
 	SRCDIR=$(srcdir) $(RUNSHARED) \
-	./$(BUILDPYTHON) $(srcdir)/Tools/scripts/setup.py install \
+	$(HOSTPYTHON) $(srcdir)/Tools/scripts/setup.py install \
 	--prefix=$(prefix) \
 	--install-scripts=$(BINDIR) \
 	--root=/$(DESTDIR)
@@ -1139,7 +1154,7 @@
 
 # Run reindent on the library
 reindent:
-	./$(BUILDPYTHON) $(srcdir)/Tools/scripts/reindent.py -r $(srcdir)/Lib
+	$(HOSTPYTHON) $(srcdir)/Tools/scripts/reindent.py -r $(srcdir)/Lib
 
 # Rerun configure with the same options as it was run last time,
 # provided the config.status script exists
@@ -1242,7 +1257,7 @@
 
 # Perform some verification checks on any modified files.
 patchcheck:
-	$(RUNSHARED) ./$(BUILDPYTHON) $(srcdir)/Tools/scripts/patchcheck.py
+	$(RUNSHARED) $(HOSTPYTHON) $(srcdir)/Tools/scripts/patchcheck.py
 
 # Dependencies