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Re: [igraph] error in example igraph_cliques.c

From: Vincent Wolowski
Subject: Re: [igraph] error in example igraph_cliques.c
Date: Sun, 2 Dec 2007 10:56:58 +0100

Hello Gabor,

thank you for your reply.

I am working on Ubuntu Linux version 7.10 (Linux kernel 2.6.22-14).

The gcc version on my system is:  4.1.3 (20070929)

The full output of gcc -v is:

Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v
--enable-languages=c,c++,fortran,objc,obj-c++,treelang --prefix=/usr
--enable-shared --with-system-zlib --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix --enable-nls
--with-gxx-include-dir=/usr/include/c++/4.1.3 --program-suffix=-4.1
--enable-__cxa_atexit --enable-clocale=gnu --enable-libstdcxx-debug
--enable-mpfr --enable-checking=release i486-linux-gnu
Thread model: posix
gcc version 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)

I use as IDE Eclipse version: (build: M20071023-1652).

It is quite easy to set up igraph in Eclipse. If this is useful I can
send you my configuration.

When I try to compile the example igraph_cliques.c in Eclipse, I get
the following console output:

**** Build of configuration Debug for project igraph-clique-proj ****

make all
Building file: ../src/igraph-clique-proj.cpp
Invoking: GCC C++ Compiler
g++ -I/usr/local/include/igraph -O0 -g3 -Wall -c -fmessage-length=0
-MMD -MP -MF"src/igraph-clique-proj.d" -MT"src/igraph-clique-proj.d"
-o"src/igraph-clique-proj.o" "../src/igraph-clique-proj.cpp"
../src/igraph-clique-proj.cpp: In function 'int main()':
../src/igraph-clique-proj.cpp:48: warning: comparison between signed
and unsigned integer expressions
../src/igraph-clique-proj.cpp:58: error: invalid conversion from
'void*' to 'igraph_vector_t*'
make: *** [src/igraph-clique-proj.o] Error 1

Line 58 is:  v=igraph_vector_ptr_e(&result,i);

If you need other information, let me know.

Best regards,

On Dec 1, 2007 11:23 PM, Gabor Csardi <address@hidden> wrote:
> Hmmm, you've sent the source of the example, which is nice
> but we have that too. What we don't have however is your operating
> system, the version of your compiler, your compile flags,
> the detailed error message. Please send us these and then we can help.
> Right now I can only say that for me it works on Linux, Windows and
> OSX with recent versions of gcc (eg. i've used 4.1.2 on my Linux
> system).
> Thanks,
> Gabor
> On Sat, Dec 01, 2007 at 11:04:57PM +0100, Vincent Wolowski wrote:
> > Hello,
> >
> > when I try to compile the example igraph_cliques.c (copied below) with
> > igraph version 0.4.4,
> > I get an error in regards to invalid conversion at:
> > [...]
> > v=igraph_vector_ptr_e(&result,i);
> > [...]
> >
> > I am not sure what the reason is and I would be thankful if someone
> > could comment.
> >
> > Best regards,
> > Vincent
> >
> >
> [...]
> --
> Csardi Gabor <address@hidden>    MTA RMKI, ELTE TTK
> _______________________________________________
> igraph-help mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/igraph-help

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