aix gcc compile on aix 5L but couldn't run on aix 4.3

[mla]

hello all! thanks for all the help. I got another
problem. :P I use gcc to compile a program running on
aix 5.2. but when I copied it into aix 4.3. it won't
run I get the error 

exec(): 0509-036 Cannot load program ./test1 because
of the following errors:
        0509-023 Symbol ___memset in test1 is not
defined.
        0509-023 Symbol ___memmove in test1 is not
defined.
        0509-023 Symbol __malloc_user_defined_name in
test1 is not defined.
        0509-026 System error: Cannot run a file that
does not have a valid format.

is there a flag that I missed that I could use when I
compile on aix 5 that will allow me to run the program
on a lower version of the os? 

neeeed help!thanks!




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