Linux: build a 32-bit Debian package too.

installer/linux/build.scons

 # Copyright 2009, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
@@ skipping 131 matching lines @@
         """dir=$OBJ_ROOT/installer/linux/""" + deb_build_tree + """ && \
            cd $$dir && \
            dpkg-buildpackage -b -uc -a""" + arch + """ -D -rfakeroot && \
            cd $$OLDPWD && \
            mv $$dir/../""" + package_file_name + """.deb \
                $$(dirname $TARGET) && \
            mv $$dir/../""" + package_file_name + """.changes \
                $$(dirname $TARGET)""")
     return targets
 
-
-  BuildDebianPackage(["debian_amd64/changelog",
+  # Build amd64 package.
+  BuildDebianPackage(["debian_common/changelog",
                       "debian_amd64/control",
                       "debian_amd64/google-o3d.install",
                       "debian_amd64/links",
                       "debian_amd64/postinst",
                       "debian_amd64/prerm",
                       "debian_amd64/rules"
                      ],
                      [("libnpo3dautoplugin.so",
                            '$ARTIFACTS_DIR/libnpo3dautoplugin.so'),
                       ("libGLEW.so.1.5", '$ARTIFACTS_DIR/libGLEW.so.1.5'),
                       ("libCg.so", '$ARTIFACTS_DIR/libCg.so'),
                       ("libCgGL.so", '$ARTIFACTS_DIR/libCgGL.so')
                      ],
                      output_dir='$ARTIFACTS_DIR',
                      force_version=env.get('O3D_PLUGIN_VERSION'))
 
-  # TODO(tschmelcher): Also build an i386 deb.
+  # Build i386 package.
+  BuildDebianPackage(["debian_common/changelog",
+                      "debian_i386/control",
+                      "debian_i386/google-o3d.install",
+                      "debian_i386/links",
+                      "debian_i386/rules"
+                     ],
+                     [("libnpo3dautoplugin.so",
+                           '$ARTIFACTS_DIR/libnpo3dautoplugin.so')
+                     ],
+                     output_dir='$ARTIFACTS_DIR',
+                     force_version=env.get('O3D_PLUGIN_VERSION'))
 
 else:
   print('dpkg-buildpackage not found in PATH; Debian packages will not be '
       'built.');
 
 # TODO(tschmelcher): Also build an RPM and a tgz.