diff --git a/packages/Python-2.7.5/Makefile.pre.in b/packages/Python-2.7.5/Makefile.pre.in
index 9d55550..b5a1103 100644
--- a/packages/Python-2.7.5/Makefile.pre.in
+++ b/packages/Python-2.7.5/Makefile.pre.in
@@ -196,6 +196,24 @@ PYTHON_FOR_BUILD=@PYTHON_FOR_BUILD@
 _PYTHON_HOST_PLATFORM=@_PYTHON_HOST_PLATFORM@
 HOST_GNU_TYPE=  @host@
 
+##########################################################################
+# Cross-compile early build requriements and related: X_FOR_BUILD
+#
+BUILD_FOR_BUILD=@BUILD_FOR_BUILD@
+BUILD_PYTHON_FOR_BUILD=@BUILD_PYTHON_FOR_BUILD@
+SKIP_FOR_BUILD=@SKIP_FOR_BUILD@
+#
+##########################################################################
+# Values saved aside for later cross-compile toolchain
+#
+CC_FOR_CROSS_COMPILE=@CC_FOR_CROSS_COMPILE@
+CXX_FOR_CROSS_COMPILE=@CXX_FOR_CROSS_COMPILE@
+AR_FOR_CROSS_COMPILE=@AR_FOR_CROSS_COMPILE@
+RANLIB_FOR_CROSS_COMPILE=@RANLIB_FOR_CROSS_COMPILE@
+#
+##########################################################################
+
+
 # The task to run while instrument when building the profile-opt target
 PROFILE_TASK=	$(srcdir)/Tools/pybench/pybench.py -n 2 --with-gc --with-syscheck
 #PROFILE_TASK=	$(srcdir)/Lib/test/regrtest.py
@@ -227,6 +245,7 @@ LIBFFI_INCLUDEDIR=	@LIBFFI_INCLUDEDIR@
 ##########################################################################
 # Parser
 PGEN=		Parser/pgen$(EXE)
+PGEN_FOR_BUILD=	@PGEN_FOR_BUILD@
 
 PSRCS=		\
 		Parser/acceler.c \
@@ -432,7 +451,14 @@ coverage:
 
 
 # Build the interpreter
-$(BUILDPYTHON):	Modules/python.o $(LIBRARY) $(LDLIBRARY)
+$(BUILDPYTHON):	$(BUILD_FOR_BUILD) Modules/python.o $(LIBRARY) $(LDLIBRARY)
+		$(LINKCC) $(LDFLAGS) $(LINKFORSHARED) -o $@ \
+			Modules/python.o \
+			$(BLDLIBRARY) $(LIBS) $(MODLIBS) $(SYSLIBS) $(LDLAST)
+
+# Build the native interpreter for cross-compile only with missing corresponding Python installation
+python_for_build$(EXE):	Modules/python.o $(LIBRARY) $(LDLIBRARY)
+		@echo -e "Building Python for build = python_for_build$(EXE) ...\n"
 		$(LINKCC) $(LDFLAGS) $(LINKFORSHARED) -o $@ \
 			Modules/python.o \
 			$(BLDLIBRARY) $(LIBS) $(MODLIBS) $(SYSLIBS) $(LDLAST)
@@ -593,14 +630,30 @@ Modules/pwdmodule.o: $(srcdir)/Modules/pwdmodule.c $(srcdir)/Modules/posixmodule
 $(GRAMMAR_H): $(GRAMMAR_INPUT) $(PGENSRCS)
 		@$(MKDIR_P) Include
 		$(MAKE) $(PGEN)
-		$(PGEN) $(GRAMMAR_INPUT) $(GRAMMAR_H) $(GRAMMAR_C)
+		$(PGEN_FOR_BUILD) $(GRAMMAR_INPUT) $(GRAMMAR_H) $(GRAMMAR_C)
 $(GRAMMAR_C): $(GRAMMAR_H) $(GRAMMAR_INPUT) $(PGENSRCS)
 		$(MAKE) $(GRAMMAR_H)
 		touch $(GRAMMAR_C)
 
-$(PGEN):	$(PGENOBJS)
+$(PGEN):	$(BUILD_FOR_BUILD) $(PGENOBJS)
+		@echo -e "Building PGEN=$(PGEN) ...\n"
 		$(CC) $(OPT) $(LDFLAGS) $(PGENOBJS) $(LIBS) -o $(PGEN)
 
+# Build Parser/pgen_for build to run on build-host during cross-compile only.
+$(PGEN_FOR_BUILD):	$(BUILD_PYTHON_FOR_BUILD) $(PGENOBJS)
+		@echo -e "(I) Building PGEN_FOR_BUILD=$(PGEN_FOR_BUILD) ...\n"
+		$(CC) $(OPT) $(LDFLAGS) $(PGENOBJS) $(LIBS) -o $(PGEN_FOR_BUILD)
+		@echo -e "(I) Completed building native files necessary for cross-compile. Cleaning native build-host files ...\n"
+		$(MAKE) clean
+		@# Restore cross-compile tool-chain
+		CC=$(CC_FOR_CROSS_COMPILE)
+		CXX=$(CXX_FOR_CROSS_COMPILE)
+		AR=$(AR_FOR_CROSS_COMPILE)
+		RANLIB=$(RANLIB_FOR_CROSS_COMPILE)
+		MAINCC=$(CC)
+		LINKCC=$(PURIFY) $(MAINCC)
+		@# Cross-comp(I) ile object files that were expected to be here
+		@$(MAKE) $(PGENOBJS)
+
 Parser/grammar.o:	$(srcdir)/Parser/grammar.c \
 				$(srcdir)/Include/token.h \
 				$(srcdir)/Include/grammar.h
@@ -1133,11 +1198,13 @@ libainstall:	all python-config
 # Install the dynamically loadable modules
 # This goes into $(exec_prefix)
 sharedinstall: sharedmods
+	CC='$(CC)' LDSHARED='$(BLDSHARED)' OPT='$(OPT)' \
 	$(RUNSHARED) $(PYTHON_FOR_BUILD) $(srcdir)/setup.py install \
+	   	$(SKIP_FOR_BUILD) \
 	   	--prefix=$(prefix) \
-		--install-scripts=$(BINDIR) \
-		--install-platlib=$(DESTSHARED) \
-		--root=$(DESTDIR)/
+		--install-scripts=$(DESTDIR)$(BINDIR) \
+		--install-platlib=$(DESTDIR)$(DESTSHARED) \
+		--root=/
 	-rm $(DESTDIR)$(DESTSHARED)/_sysconfigdata.py*
 
 # Here are a couple of targets for MacOSX again, to install a full
diff --git a/packages/Python-2.7.5/configure.ac b/packages/Python-2.7.5/configure.ac
index 30f5bf4..f216cd5 100644
--- a/packages/Python-2.7.5/configure.ac
+++ b/packages/Python-2.7.5/configure.ac
@@ -16,28 +16,57 @@ AC_CANONICAL_HOST
 AC_SUBST(build)
 AC_SUBST(host)
 
+# Require compatible python interpreter (2.7.0 <= version < 3.0) and
+# Parser/pgen installed on build-box for cross-compile.
 if test "$cross_compiling" = yes; then
+    # Build python interpreter to be used in cross-compiling, if missing on build-host, and pgen.
     AC_MSG_CHECKING([for python interpreter for cross build])
     if test -z "$PYTHON_FOR_BUILD"; then
         for interp in python$PACKAGE_VERSION python2 python; do
-	    which $interp >/dev/null 2>&1 || continue
-	    if $interp -c 'import sys;sys.exit(not (sys.version_info@<:@:2@:>@ >= (2,7) and sys.version_info@<:@0@:>@ < 3))'; then
-	        break
-	    fi
+            which $interp >/dev/null 2>&1 || continue
+            if $interp -c 'import sys;sys.exit(not (sys.version_info@<:@:2@:>@ >= (2,7) and sys.version_info@<:@0@:>@ < 3))'; then
+                break
+            fi
             interp=
-	done
+        done
         if test x$interp = x; then
-	    AC_MSG_ERROR([python$PACKAGE_VERSION interpreter not found])
-	fi
+            # Use native interpreter built during early make
+            interp='$(srcdir)/build-host-python'
+            BUILD_FOR_BUILD='python_for_build$(EXE)'
+        else
+            BUILD_FOR_BUILD=''
+        fi
         AC_MSG_RESULT($interp)
-	PYTHON_FOR_BUILD='_PYTHON_PROJECT_BASE=$(abs_builddir) _PYTHON_HOST_PLATFORM=$(_PYTHON_HOST_PLATFORM) PYTHONPATH=$(shell test -f pybuilddir.txt && echo $(abs_builddir)/`cat pybuilddir.txt`:)$(srcdir)/Lib:$(srcdir)/Lib/plat-$(MACHDEP) '$interp
+        BUILD_PYTHON_FOR_BUILD="${BUILD_FOR_BUILD}"
+        PYTHON_FOR_BUILD='_PYTHON_PROJECT_BASE=$(abs_builddir) _PYTHON_HOST_PLATFORM=$(_PYTHON_HOST_PLATFORM) PYTHONPATH=$(shell test -f pybuilddir.txt && echo $(abs_builddir)/`cat pybuilddir.txt`:)$(srcdir)/Lib:$(srcdir)/Lib/plat-$(MACHDEP) '$interp
+        if test "$build_python_for_build" = yes; then
+            AC_MSG_WARN('Corresponding python interpreter on build-host was not found. Scheduling for build before cross-compile ...')
+        fi
+    fi
+    # Unless specified on cmd-line, always build native Parser/pgen to be used during cross-compile.
+    AC_MSG_CHECKING([for Parser/pgen for cross build])
+    if test -z "$PGEN_FOR_BUILD"; then
+        PGEN_FOR_BUILD='Parser/pgen_for_build$(EXE)'
+        AC_MSG_RESULT($PGEN_FOR_BUILD)
+        BUILD_FOR_BUILD="${BUILD_FOR_BUILD} ${PGEN_FOR_BUILD}"
+        AC_MSG_WARN('No Parser/pgen was provided for build.  Scheduling for build before cross-compile ...')
+    else
+        AC_MSG_RESULT($PGEN_FOR_BUILD)
     fi
+    SKIP_MODS_BUILD='--skip-build'
 elif test "$cross_compiling" = maybe; then
     AC_MSG_ERROR([Cross compiling required --host=HOST-TUPLE and --build=ARCH])
 else
     PYTHON_FOR_BUILD='./$(BUILDPYTHON) -E'
+    PGEN_FOR_BUILD='$(PGEN)'
+    BUILD_FOR_BUILD=''
+    SKIP_MODS_BUILD=''
 fi
 AC_SUBST(PYTHON_FOR_BUILD)
+AC_SUBST(PGEN_FOR_BUILD)
+AC_SUBST(BUILD_FOR_BUILD)
+AC_SUBST(BUILD_PYTHON_FOR_BUILD)
+AC_SUBST(SKIP_FOR_BUILD)
 
 dnl Ensure that if prefix is specified, it does not end in a slash. If
 dnl it does, we get path names containing '//' which is both ugly and
@@ -4499,6 +4528,30 @@ for dir in $SRCDIRS; do
 done
 AC_MSG_RESULT(done)
 
+# Saving cross-compile tool-chaing, because need to at least build Parser/pgen
+# to run natively on build system.
+if test "$cross_compiling" = yes; then
+    # save discovered values ...
+    CC_FOR_CROSS_COMPILE="${CC}"
+    CXX_FOR_CROSS_COMPILE="${CXX}"
+    AR_FOR_CROSS_COMPILE="${AR}"
+    RANLIB_FOR_CROSS_COMPILE="${RANLIB}"
+    # reset to defaults for native toolchain for early pgen and python builds
+    CC='cc'
+    CXX='c++'
+    AR='ar'
+    RANLIB='ranlib'
+fi
+AC_SUBST(CC)
+AC_SUBST(CXX)
+AC_SUBST(AR)
+AC_SUBST(RANLIB)
+AC_SUBST(CC_FOR_CROSS_COMPILE)
+AC_SUBST(CXX_FOR_CROSS_COMPILE)
+AC_SUBST(AR_FOR_CROSS_COMPILE)
+AC_SUBST(RANLIB_FOR_CROSS_COMPILE)
+
+
 # generate output files
 AC_CONFIG_FILES(Makefile.pre Modules/Setup.config Misc/python.pc)
 AC_CONFIG_FILES([Modules/ld_so_aix], [chmod +x Modules/ld_so_aix])