Hello I'm trying to make a windows executable of this example:
https://www.tecgraf.puc-rio.br/iup/examples/C/sample.c
On Linux with help of this tool: https://github.com/jprjr/iup-build
On Ubuntu 16.04, but i get this linking error when trying to cross-compile:
daniel@daniel-desktop:~/Desktop/$ make
i686-w64-mingw32-g++ -static -I/home/daniel/iup-build/deps/iup-3.22/include
-I/home/daniel/iup-build/deps/cd-5.11.1/include
-I/home/daniel/iup-build/deps/im-3.12/include
-I/home/daniel/iup-build/deps/zlib-1.2.8/include
-I/home/daniel/iup-build/deps/freetype-2.6.3/include -o sample.exe sample.c
-L/home/daniel/iup-build/deps/iup-3.22/lib/mingw4
-L/home/daniel/iup-build/deps/cd-5.11.1/lib/mingw4
-L/home/daniel/iup-build/deps/im-3.12/lib/mingw4
-L/home/daniel/iup-build/deps/zlib-1.2.8/lib/mingw4
-L/home/daniel/iup-build/deps/freetype-2.6.3/lib/mingw4 -lm -lcdim -lim
-lim_process -lcd -liupcd -liupim -liupimglib -liupcontrols -liup -liupgl
-lz -lim -lcd -lfreetype6 -lgdi32 -lcomdlg32 -lcomctl32 -luuid -loleaut32
-lole32 -lwinspool
/tmp/cccFDodU.o:sample.c:(.text+0x1da): undefined reference to
`iupKeyCodeToName(int)'
/tmp/cccFDodU.o:sample.c:(.text+0x215): undefined reference to
`iupKeyCodeToName(int)'
/tmp/cccFDodU.o:sample.c:(.text+0x55e): undefined reference to
`iupKeyCodeToName(int)'
collect2: error: ld returned 1 exit status
makefile:18: recipe for target 'sample.exe' failed
make: *** [sample.exe] Error 1

libiup.a seem to have iupKeyCodeToName:
daniel@daniel-desktop:~/iup-build/output/iup-3.22-i686-w64-mingw32/i686-w64-mingw32/lib$
nm -C -A *.a | grep iupKeyCodeToName
libiup.a:iup_key.o:00000340 T iupKeyCodeToName
libiup.dll.a:d000887.o:00000000 I _imp__iupKeyCodeToName
libiup.dll.a:d000887.o:00000000 T iupKeyCodeToName

So I have no idea what is causing this, I've also tried doing the same but
natively on Windows 7 also using mingw, but fail with the exact same error.
I haven't tried other compilers yet.

I can however compile this example for Linux on Ubuntu 16.04 using gcc
without any issues.

Any hints on how to solve this would me much appreciated.
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