typeded (multiple compilation unit)

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C++

C

ANSI

Hello everyone,
I have a question, i am using c language to program PIC micro controller, but i have a problem:
i am using multiple compilation programming, so that each code library is composed of header file (.h) and source file (.c), i made an array of functions using typedef

typedef void (*out)(int8 weight);
void OUT_A(int8 weight){output_A(weight);}
void OUT_B(int8 weight){output_B(weight);}
void OUT_C(int8 weight){output_C(weight);}
void OUT_D(int8 weight){output_D(weight);}
void OUT_E(int8 weight){output_E(weight);}
static out output_port[5+1] = {OUT_A, OUT_B, OUT_C, OUT_D, OUT_E};

the function inside the array is not responding, but if i use the same array in a single compilation unit project, it is working fine, i don't know what to do, is there some sort of declaration and/or definition for this issue.

Thanks in advance,
z3ngew