--- setup.py.orig
+++ setup.py
@@ -38,7 +38,7 @@
     return sys.platform
 
 
-CROSS_COMPILING = ("_PYTHON_HOST_PLATFORM" in os.environ)
+CROSS_COMPILING = ("_PYTHON_HOST_PLATFORM" in os.environ) or ('PYTHONXCPREFIX' in os.environ)
 HOST_PLATFORM = get_platform()
 MS_WINDOWS = (HOST_PLATFORM == 'win32')
 CYGWIN = (HOST_PLATFORM == 'cygwin')
@@ -700,6 +700,10 @@
         if HOST_PLATFORM == 'hp-ux11':
             self.lib_dirs += ['/usr/lib/hpux64', '/usr/lib/hpux32']
 
+        if 'XBPS_CROSS_BASE' in os.environ:
+            self.lib_dirs += [os.environ['XBPS_CROSS_BASE'] + '/usr/lib']
+            self.inc_dirs += [os.environ['XBPS_CROSS_BASE'] + '/usr/include']
+
         if MACOS:
             # This should work on any unixy platform ;-)
             # If the user has bothered specifying additional -I and -L flags
--- Makefile.pre.in.orig	2017-07-08 05:33:27.000000000 +0200
+++ Makefile.pre.in	2017-08-27 19:49:11.114893045 +0200
@@ -1055,8 +1055,6 @@
 			upgrade) ensurepip="--upgrade" ;; \
 			install|*) ensurepip="" ;; \
 		esac; \
-		$(RUNSHARED) $(PYTHON_FOR_BUILD) -m ensurepip \
-			$$ensurepip --root=$(DESTDIR)/ ; \
 	fi
 
 altinstall: commoninstall
@@ -1065,8 +1063,6 @@
 			upgrade) ensurepip="--altinstall --upgrade" ;; \
 			install|*) ensurepip="--altinstall" ;; \
 		esac; \
-		$(RUNSHARED) $(PYTHON_FOR_BUILD) -m ensurepip \
-			$$ensurepip --root=$(DESTDIR)/ ; \
 	fi
 
 commoninstall:  @FRAMEWORKALTINSTALLFIRST@ \
@@ -1434,11 +1430,12 @@
 # Install the dynamically loadable modules
 # This goes into $(exec_prefix)
 sharedinstall: sharedmods
+	CC='$(CC)' LDSHARED='$(BLDSHARED)' OPT='$(OPT)' \
 	$(RUNSHARED) $(PYTHON_FOR_BUILD) $(srcdir)/setup.py install \
 	   	--prefix=$(prefix) \
-		--install-scripts=$(BINDIR) \
-		--install-platlib=$(DESTSHARED) \
-		--root=$(DESTDIR)/
+		--install-scripts=$(DESTDIR)$(BINDIR) \
+		--install-platlib=$(DESTDIR)$(DESTSHARED) \
+		--root=/
 	-rm $(DESTDIR)$(DESTSHARED)/_sysconfigdata_$(ABIFLAGS)_$(MACHDEP)_$(MULTIARCH).py
 	-rm -r $(DESTDIR)$(DESTSHARED)/__pycache__