[uClibc] About the code build and codesize reduce

[Shu-Liang Lee]

Dear...
 
Remember I used the glibc and use gcc to compile my source code...
 
If a library, names "math.a", it provides
 
add()
minus()
multiple()
divide()
sum()
square()
 
when I write a main function in hello.c, I use add() function in math.a
only, such as
 
main()
{
    add()
    return 0;
}
 
the compiler command, how to do and it could just link the add()
function in the math.a only.
please give me a idea?
 
gcc hello.c -static math.a 
 
right?
 
The question when I meet, is dynamic link to statically link...
If I want to use -lpthread -lstdc++ -ldl to static
 
armeb-linux-uclib-gcc hello.c math.a -static -lpthread -lstdc++ -ldl
 
it seems that the codesize is summation of the pthread, stdc++ and
dl....
 
How to reduce it? I try to add -O2...I want to reduce more....
 
Please give me more suggestions...thanks.
 
Regards,
ShuLiang
 
 
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