ENH: fix for RPM generator from Eric

Modules/CPackRPM.cmake

@@ -110,7 +110,19 @@ ENDIF(NOT CPACK_RPM_PACKAGE_VENDOR)
 # a source RPM
 
 # CPACK_RPM_PACKAGE_DESCRIPTION
-# FIXME may be found in CPACK_PACKAGE_DESCRIPTION_FILE
+# The variable content may be either
+#   - explicitely given by tthe user or
+#   - filled with the content of CPACK_PACKAGE_DESCRIPTION_FILE
+#     if it is defined
+#   - set to a default value
+#
+IF (NOT CPACK_RPM_PACKAGE_DESCRIPTION)
+        IF (CPACK_PACKAGE_DESCRIPTION_FILE)
+                FILE(READ ${CPACK_PACKAGE_DESCRIPTION_FILE} CPACK_RPM_PACKAGE_DESCRIPTION)
+        ELSE (CPACK_PACKAGE_DESCRIPTION_FILE)
+                SET(CPACK_RPM_PACKAGE_DESCRIPTION "no package description available")
+        ENDIF (CPACK_PACKAGE_DESCRIPTION_FILE)
+ENDIF (NOT CPACK_RPM_PACKAGE_DESCRIPTION)
 
 # CPACK_RPM_USER_BINARY_SPECFILE 
 # FIXME when this is set then CPack should us the 
@@ -173,19 +185,17 @@ Vendor:         ${CPACK_RPM_PACKAGE_VENDOR}
 %define _topdir ${CPACK_RPM_DIRECTORY}
 
 %description
-${CPACK_RPM_PACKAGE_NAME} : will come soon 
-with the value of CPACK_RPM_PACKAGE_DESCRIPTION
-or
-the content of CPACK_PACKAGE_DESCRIPTION_FILE
-***
 ${CPACK_RPM_PACKAGE_DESCRIPTION}
-***
 
-%prep
+# This is a shortcutted spec file
+# generated by CMake RPM generator
+# we skip the %prepn %build and %install
+# steps because CPack does that for us
+#%prep
 
-%build
+#%build
   
-%install
+#%install
 
 %clean