In C, is it possible to change exported function name to different one?

Question

all.

I want to link a library which calls malloc() function. However, my target environment is different one and malloc() is supplied as in

Answer 1

I think the alias attribute might solve your problem:

alias ("target")
    The alias attribute causes the declaration to be emitted as an alias for another symbol, which must be specified. For instance,

              void __f () { /* Do something. */; }
              void f () __attribute__ ((weak, alias ("__f")));


    defines `f' to be a weak alias for `__f'. In C++, the mangled name for the target must be used. It is an error if `__f' is not defined in the same translation unit.

    Not all target machines support this attribute.

http://gcc.gnu.org/onlinedocs/gcc/Function-Attributes.html