I downloaded both packages again today (0.18.2 and rawspeed-master) and recompiled them from scratch in two separate folder with and without rawspeed. The tiff generated by dcraw_emu.exe with RawSpeed shows a blue sunflower, while the one without RawSpeed shows a proper yellow sunflower.
I did not change anything in the configurations except whatever was needed to get it to compile.
I downloaded both packages again today (0.18.2 and rawspeed-master) and recompiled them from scratch in two separate folder with and without rawspeed. The tiff generated by dcraw_emu.exe with RawSpeed shows a blue sunflower, while the one without RawSpeed shows a proper yellow sunflower.
I did not change anything in the configurations except whatever was needed to get it to compile.
Here is a comparison image, from left to right original, with rawspeed and without.
https://www.dropbox.com/s/wlfwna06nf67ktn/rawspeed.JPG?dl=0
I could zip up my working folder and upload it if that would help.