Solution : https://service.sap.com/sap/support/notes/1132422 (SAP Service marketplace login required)
Key words :
ENH_BUILD_CROSS_FOR_ENHSAPRUPGM
Related Notes :
| 1138351 | Long runtime of background job SAPRUPGM |
| 954792 | Known problems with Support Packages in SAP NW 7.1 AS ABAP |
| 822379 | Known problems with Support Packages in SAP NW 7.0x AS ABAP |