Hi Allin, I have finally understand what happened with my broken build of gretl under opensuse 11.3 64bit. The file "build.h" needed by plugin/excel_import.c was not created by the default make. This was not happening with the make under win32, which had created "build.h" correctly. For OpenSUSE, the Makefile buildstamp directive works fine and then gretl builds OK. So, Allin please adapt the Makefile.in in a way that buildstamp is processed always in a make call. The win32 Makefile as an All directive, but not the one at gretl root. I tried to add buildstamp to the .PHONY directive but it did not work. Thanks, Hélio