Win64 static build - undefined ref in project

[Unbrecht]

I tried to build a static gd library on Windows 10 64bit. The cmake build was successfully finished. When I link libgd.a and libjpeg.a to my project I get undefined references to all used functions from example code (i.e. __imp_gdImageCreate). Example: https://libgd.github.io/manuals/2.3.3/files/preamble-txt.html (I removed png functions).

If I build on unix 64bit as static lib it works.
If I build a dll it works too.

Cmake command, equal in both machines:
cmake -G "MinGW Makefiles" .. -DBUILD_STATIC_LIBS=ON -DBUILD_SHARED_LIB=OFF -DENABLE_JPEG=1 -DJPEG_LIBRARY=C:\\MinGW64\\bin\\proj\\_EXT_LIBS\\libgd\\libgd-master\\module\\jpeg\\libs\\libjpeg.a -DJPEG_INCLUDE_DIR=C:\\MinGW64\\bin\\proj\\_EXT_LIBS\\libgd\\libgd-master\\module\\jpeg

Linking in project:
gcc %pname%%val%.c -I%pname%\libgd\libgd -L%pname%\libgd -l:libgd.a -l:libjpeg.a -lm -o %pname%%exe%.exe

My gcc is from Mingw64
I tried V2.3.3 and the actual git project from yesterday.
Extracting the libgd.a with nm.exe shows that all function should be avialable. But are undefined when used.
I also tried to build with MSYS (supporting perl) but the result is the same.

Following the cmake result:
_result.txt