Re-override distutils's overriding of the Python interpreter path to be

"/usr/bin/env python" when DESTDIR is defined. This keeps from hardcoding a
specific interpreter location when building for installation on another
machine.

Makefile.in

@@ -195,8 +195,19 @@ $(ZENMAPDIR)/setup.py:
 $(ZENMAPDIR)/umitCore/Version.py $(ZENMAPDIR)/share/zenmap/config/zenmap_version: nmap.h
 	cd $(ZENMAPDIR) && $(PYTHON) install_scripts/utils/version_update.py "$(NMAP_VERSION)"
 
+# By default distutils rewrites installed scripts to hardcode the
+# location of the Python interpreter they were built with (something
+# like #!/usr/bin/python2.4). This is the wrong thing to do when
+# installing on a machine other than the one used to do the build. Use
+# this as the location of the interpreter whenever we're not doing a
+# local installation.
+DEFAULT_PYTHON_PATH = /usr/bin/env python
+
 build-zenmap: $(ZENMAPDIR)/setup.py $(ZENMAPDIR)/umitCore/Version.py
-	cd $(ZENMAPDIR) && $(PYTHON) setup.py build
+# When DESTDIR is defined, assume we're building an executable
+# distribution rather than a local installation and force a generic
+# Python interpreter location.
+	cd $(ZENMAPDIR) && $(PYTHON) setup.py build $(if $(DESTDIR),--executable "$(DEFAULT_PYTHON_PATH)")
 
 install-zenmap: $(ZENMAPDIR)/setup.py
 	cd $(ZENMAPDIR) && $(PYTHON) setup.py install --prefix "$(prefix)" $(if $(DESTDIR),--root "$(DESTDIR)")

zenmap.spec.in

@@ -44,7 +44,7 @@ from Umit, an Nmap GUI created as part of the Google Summer of Code.
 
 %build
 %configure --without-openssl PYTHON="%{__python}"
-make build-zenmap
+make build-zenmap DESTDIR=$RPM_BUILD_ROOT
 
 %install
 [ "$RPM_BUILD_ROOT" != "/" ] && rm -rf $RPM_BUILD_ROOT