There's a minor mistake in SDLcam-0.8.0-build.patch file which omitted the linkage to the PNG library. Have attached a corrected patch file.
Created attachment 132794 [details] corrected build.patch
the build patch is a cleanup of the existing code, it doesnt add anything the original SDLcam package did not link against libpng
should be fixed in 0.8.1 now, cheers