Dear Sir/ Madam, I am trying to compile my source codes on Sun Solaris 9 Operating system running on sun4u sparc SUNW,Ultra-5_10 using gcc-2.95.3. The kernel is running on 64 bit. I m giving the command gcc program.c it is creating progrom.o with ELFCLASS32. To generate 64 bit target, if I provide gcc -mcpu=v9 -m64 program.c it is saying that "cannot use v8plus instructions in a non-v8plus target binary" and "-m64 is not supported by this configuration. -mptr32 not allowed on -m64". How can I resolve my problem. Does gcc-2.95.3 supports generation of 64 bit ELFCLASS/ target. If not, which gcc version I should use. Looking for your positive response. Thanks and Regards, Ashish Mangla ASDC - SCADA CMC Limited, Hyderabad Contact 23000501, 401 Ext: 2302, M: 9866223028 ------------------------------------------------------------------------ It is not because things are difficult that we don't dare It is because we don't dare things are difficult. ------------------------------------------------------------------------