[Imlab-users] Fwd: IM 3.1 compiling on ARM

[Jesse S. <jd...@gm...>]

I am trying to use IM on an ARM platform, and I can make it compile
okay, except for warnings such as the following:

im_converttype.cpp
im_converttype.cpp: In function `int iConvertInt2Int(int, const SRCT*,
DSTT*, int, int, int) [with SRCT = imbyte, DSTT = imushort]':
im_converttype.cpp:392:   instantiated from here
im_converttype.cpp:130: warning: comparison is always true due to
limited range of data type
im_converttype.cpp:130: warning: comparison is always true due to
limited range of data type
im_converttype.cpp: In function `int iConvertInt2Int(int, const SRCT*,
DSTT*, int, int, int) [with SRCT = imbyte, DSTT = int]':
im_converttype.cpp:398:   instantiated from here
im_converttype.cpp:130: warning: comparison is always true due to
limited range of data type
im_converttype.cpp:130: warning: comparison is always true due to
limited range of data type

I know C very well, but I don't understand the C++ code here. I don't
know why these comparisons are failing. The result of using the
library is that I can do some things, such as loading files and saving
them in different formats, but when I try to change an RGB image to
BINARY or GRAY, for example, the image comes out almost completely
black, but using imlab on the desktop to convert the same image to
binary works fine.

-Jesse