Rebuild OpenCV libraries in NIOS II (8.0)

[Altera_Forum]

:confused: 

 Hello  I want make a video tracking project on NIOS II.   My project can be successfully built in Eclipse(with CDT) after some configuration work( include path, library path, libraries ), and it can run normaly.  But when I do the same configuration work in a NIOS II project(Hello_world template ), it failed when building project.  I got confused, NIOS II is also base on eclipse, why the same configuration doesn't work?  Is it because the different CDT version or something?  Any one can help me ?

[Altera_Forum]

TO_BE_DONE

[Altera_Forum]

Should I rebuild OpenCV libraries in NIOS II (8.0)? 

I'm a newbie, can somebody tell me how to build external source code into libraries in NIOS?  Thank you

[Altera_Forum]

The errors are because you are missing quite a few# includes. 

I'd start aff of adding (probably)# include <stdint.h> in order to get the fixed sized types (eg uint64_t) defined.

[Altera_Forum]

Thanks, dsl 

 I don't think that is the reason, because with the same configration, the same code can compile and run well in normal eclipse ide.  I think maybe it's because the cdt vesion in nios2-ide is tool low. In "Nios II Software Developer’s Handbook", it says "The Nios II IDE uses GCC 3, and IDE projects can only be built with GCC 3.", but in my normal eclipse ide, the gcc version is newest(and the OpenCV2.3.1 source code is built by gcc 4.6.1).  So I want to build the OpenCV source with nios2-ide's compiler to get compatible libraries, but untill now, I still do not know how.  Yang

[Altera_Forum]

No this is all about header files and the build environment, not the IDE. 

Your 'working' build is (if I understand you) targetted at a completely different environment.  You need stdint.h from somewhere.

[Altera_Forum]

--- Quote Start ---  No this is all about header files and the build environment, not the IDE. Your 'working' build is (if I understand you) targetted at a completely different environment.  You need stdint.h from somewhere.  --- Quote End ---   dsl,  I found you're right about the stdint.h thing.  I add "\usr\include\" in the include path, and add# include <stdint.h> in the cpp file. Then errors about "int64" disappeared, but new errors come, shown as follows:  Severity and Description Path Resource Location Creation Time Id /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/char_traits.h error: initializing argument 1 of `void* std::memchr(void*, int, size_t)' hello_world_opencv line 262 1331094172861 1533 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/char_traits.h error: `memcmp' was not declared in this scope hello_world_opencv line 254 1331094172859 1530 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/char_traits.h error: `memcpy' was not declared in this scope hello_world_opencv line 270 1331094172863 1535 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/char_traits.h error: `memmove' is not a member of `std' hello_world_opencv line 186 1331094172858 1529 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/char_traits.h error: `memmove' was not declared in this scope hello_world_opencv line 266 1331094172862 1534 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/char_traits.h error: `memset' was not declared in this scope hello_world_opencv line 274 1331094172864 1536 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/char_traits.h error: `strlen' was not declared in this scope hello_world_opencv line 258 1331094172860 1531 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/char_traits.h error: invalid conversion from `const void*' to `void*' hello_world_opencv line 262 1331094172861 1532 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/codecvt.h error: `strcmp' is not a member of `std' hello_world_opencv line 460 1331094172893 1567 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_classes.h error: `strcmp' is not a member of `std' hello_world_opencv line 538 1331094172871 1537 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_classes.h error: `strcpy' is not a member of `std' hello_world_opencv line 579 1331094172872 1538 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.h error: `memcmp' was not declared in this scope hello_world_opencv line 1167 1331094172889 1565 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.h error: `memcmp' was not declared in this scope hello_world_opencv line 1182 1331094172892 1566 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.h error: `memcpy' was not declared in this scope hello_world_opencv line 897 1331094172887 1561 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.h error: `memcpy' was not declared in this scope hello_world_opencv line 962 1331094172888 1562 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.h error: `memcpy' was not declared in this scope hello_world_opencv line 1099 1331094172888 1563 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.h error: `memcpy' was not declared in this scope hello_world_opencv line 1152 1331094172889 1564 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.h error: `strcmp' is not a member of `std' hello_world_opencv line 1898 1331094172895 1568 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.h error: `strcmp' is not a member of `std' hello_world_opencv line 2653 1331094172897 1569 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.h error: `strcmp' is not a member of `std' hello_world_opencv line 3932 1331094172901 1572 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.tcc error: invalid use of undefined type `struct tm' hello_world_opencv line 1749 1331094172905 1574 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.tcc error: invalid use of undefined type `struct tm' hello_world_opencv line 1756 1331094172908 1576 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.tcc error: invalid use of undefined type `struct tm' hello_world_opencv line 1764 1331094172910 1577 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.tcc error: invalid use of undefined type `struct tm' hello_world_opencv line 1771 1331094172911 1578 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.tcc error: invalid use of undefined type `struct tm' hello_world_opencv line 1783 1331094172912 1579 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.tcc error: invalid use of undefined type `struct tm' hello_world_opencv line 1790 1331094172913 1580 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.tcc error: invalid use of undefined type `struct tm' hello_world_opencv line 1793 1331094172913 1581 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.tcc error: invalid use of undefined type `struct tm' hello_world_opencv line 1805 1331094172915 1582 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.tcc error: invalid use of undefined type `struct tm' hello_world_opencv line 1810 1331094172917 1583 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.tcc error: invalid use of undefined type `struct tm' hello_world_opencv line 1818 1331094172918 1584 /opt/altera8.0/nios2eds/bin/nios2-gnutools/H-i686-pc-linux-gnu/bin/../lib/gcc/nios2-elf/3.4.6/../../../../../include/c++/3.4.6/bits/locale_facets.tcc ...   Can you explain these errors? thanks  Yang

[Altera_Forum]

You are missing more system headers. 

Probably string.h and sys/time.h  It is also worth always using the unix '/' in directory paths, rather than the microsoft '\'. The former is valid in almost all microsoft tools.

[Altera_Forum]

--- Quote Start ---  You are missing more system headers. Probably string.h and sys/time.h  It is also worth always using the unix '/' in directory paths, rather than the microsoft '\'. The former is valid in almost all microsoft tools.  --- Quote End ---    After making some change in the original project, I finally passed the compile phase, but when linking, there are errors said the opencv libraries can not be found. So I think the problem still lies in the incompatibility between nios2-elf-gcc compiled files and the gcc on my computer system(mine is Ubuntu 11.10)  So I think I still need to recompile the opencv libraries by nios2-elf-gcc.

[Altera_Forum]

You'll need to compile everything with the nios2 compiler. 

The linker will give you errors if you try to link together code from different cpu architectures.  You also need to make sure the nios compiler isn't reading any header files from /usr/include - they will be the wrong ones. Even if the code compiles it may not run.