undefined reference when linking dll with mingw 64, and gcc 4.8.1

[Thiago Tiedtke dos Reis]

Hi all!

Please, sorry if this is a recurrent question.

I'm trying to compile the Freeimage with this environment:

gcc version 4.8.1 (rev5, Built by MinGW-W64 project), from this link:

https://sourceforge.net/projects/mingwbuilds/files/host-windows/releases/4.8.1/64-bit/threads-win32/seh/

And msys2 from this link:

https://sourceforge.net/projects/msys2/files/Alpha-versions/

And some options of my compiler environment:

CFLAGS="-march=nocona -mtune=core2 -pipe -O2"
CXXFLAGS="-march=nocona -mtune=core2 -pipe -O2"

But a error of linking against a .o file was presented how show the pastebin:

http://pastebin.com/xJk2W81C

Was applied these patches:

https://sourceforge.net/p/freeimage/bugs/151/

and

https://github.com/openexr/openexr/issues/56

I forgot something? any tips to generate the 64-bit dll with my environment?

Thanks on Advance!

Best regards,

Thiago Tiedtke dos Reis

[Andy Gainey]

Nearly same situation for me (gcc 4.8.2, MinGW-W64).

I honestly don't know entirely what I'm doing, but I saw that the files BitmapAccess.o was attempting to reference were defined in PixelAccess.cpp. But in Makefile.srcs, BitmapAccess.cpp came well before PixelAccess.cpp. I simply moved PixelAccess.cpp to the front of the list, did a make clean and then a make, and it appears to have built.