Package: opencv
Severity: normal
Tags: patch
When building 'opencv' on amd64 with gcc-4.0,
I get the following error:
x86_64-linux-g++ -DHAVE_CONFIG_H -I. -I. -I../../../.. -I../../include
-I../../../../cv/include -I../../../highgui -g -fomit-frame-pointer -O3
-DNDEBUG -Wall -fno-rtti -pipe -D_XOPEN_SOURCE=500 -g -fomit-frame-pointer -O3
-DNDEBUG -Wall -fno-rtti -pipe -Wp,-MD,.deps/cvvideo.pp -c cvvideo.cpp -fPIC
-DPIC -o .libs/cvvideo.o
cvvideo.cpp: In function 'int cvcamGetCamerasCount()':
cvvideo.cpp:112: warning: comparison between signed and unsigned integer
expressions
cvvideo.cpp: In function 'int cvcamSetProperty(int, const char*, void*)':
cvvideo.cpp:427: warning: comparison is always false due to limited range of
data type
cvvideo.cpp:428: warning: comparison is always false due to limited range of
data type
cvvideo.cpp:429: warning: comparison is always false due to limited range of
data type
cvvideo.cpp:430: warning: comparison is always false due to limited range of
data type
cvvideo.cpp:431: warning: comparison is always false due to limited range of
data type
cvvideo.cpp: In function 'int icvVideoStart(int)':
cvvideo.cpp:618: warning: format '%d' expects type 'int', but argument 3 has
type 'CvVideoCamera*'
cvvideo.cpp:695: warning: format '%d' expects type 'int', but argument 3 has
type 'CvVideoCamera*'
cvvideo.cpp: In function 'void* icvVideoCaptureProc(void*)':
cvvideo.cpp:717: error: cast from 'void*' to 'int' loses precision
With the attached patch 'opencv' can be compiled
on amd64 using gcc-4.0.
Regards
Andreas Jochens
diff -urN ../tmp-orig/opencv-0.9.5/otherlibs/cvcam/src/unix/cvvideo.cpp
./otherlibs/cvcam/src/unix/cvvideo.cpp
--- ../tmp-orig/opencv-0.9.5/otherlibs/cvcam/src/unix/cvvideo.cpp
2002-11-11 18:05:32.000000000 +0100
+++ ./otherlibs/cvcam/src/unix/cvvideo.cpp 2005-03-01 21:55:19.672620720
+0100
@@ -713,7 +713,7 @@
////////////////////////////////////////////////////////////////////////////////
void* icvVideoCaptureProc(void* arg)
{
- int cameraid = (int) arg;
+ long cameraid = (long) arg;
CvVideoCamera* const camera = &(cameras[cameraid]);
assert(cameras != NULL);
--
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