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Undefined link to conj, conjf, conjl

I cannot figure out how to fix this binding problem in GCC.
I am running CodeBlocks 13.12 under Windows 8, GCC + MingWG 4.8.1.
I created a project with two files:

main.c

#include <complex.h>
int main(void)  
{  
    double complex (*FUNC)(double complex) = conj;   
    return 0;  
}

test.c

#include <complex.h>  
double complex (*CEXP)(double complex) = cexp;  
double complex (*CONJ)(double complex) = conj;

When the project is compiled in CodeBlocks (I use only the compiler option -std = c11 ), the
error is: "Undefined link to conj".

I think this is extrange, since the conj function is defined in complex.h , since there is a cexp function , but the cexp link seems to work well.

, conj main.c.
(SORRY: , main.c, )

GCC?
CodeBlocks ?
.

. CodeBlocks:

mingw32-gcc.exe -Wall -g -std = c11 -g -std = c11 -c C:\Users\Machine\Desktop\myapp\myapp.c -o obj\Debug\myapp.o
mingw32-gcc.exe -Wall -g -std = c11 -g -std = c11 -c C:\Users\Machine\Desktop\myapp\test.c -o obj\Debug\test.o
mingw32-g++. exe -o bin\Debug\myapp.exe obj\Debug\myapp.o obj\Debug\test.o
obj\Debug\myapp.o: main': C:/Users/Machine/Desktop/myapp/myapp.c:9: undefined reference to conj '   obj\Debug\test.o: test.c:(. + 0x4): undefined `conj '   collect2.exe: error: ld 1

: -lm CodeBlocks - (, // Settings/Compiler/Linker, Project/Build options... ..).

MOREOVER: conj "" MinGW32 complex.h. , , -fno-inline .

NM: o11c, nm. :

<snip, not what was needed>
+4
2

, , , ; conj() cexp(), cexp(), conj(). , cexp() - , , mingwrt-3.x predating mingwrt-3.21 ( , mingwrt-4.x), conj() __inline__, , .

mingwrt-3.21, , ( mingwrt-3.21.1 release).

+4

( ):

, , , gcc .

,

static double complex conj_ (double complex a)
{
    return conj (a);
}

... - , conj , conj.

0

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