This is a known issue, see e.g. https://github.com/igraph/rigraph/issues/234
Gabor
On Mon, Feb 12, 2018 at 4:02 PM, Jannick <thirdedit...@gmx.net> wrote:
> Hi Greta,
>
> On Mon, 12 Feb 2018 15:41:36 +0100, Greta Romano wrote:
>> Dear igraph staff,
>>
>> I'am Greta, a PhD student. I'm trying to install igraph on Rstudio but
>> I have several errors in the log during the installation. I tried to
>> install the most recent version of igraph through
>> install.packages("igraph") but I obtain this error:
>>
>> foreign-graphml.c: In function ‘igraph_write_graph_graphml’:
>> foreign-graphml.c:1408:46: error: expected ‘)’ before
>> ‘GRAPHML_NAMESPACE_URI’
>> ret=fprintf(outstream, "<graphml xmlns=\"" GRAPHML_NAMESPACE_URI
>> "\"\n"); ^~~~~~~~~~~~~~~~~~~~~
>> foreign-graphml.c:1412:59: error: expected ‘)’ before
>> ‘GRAPHML_NAMESPACE_URI’
>
> You could try to replace the file foreign-graphml.c with the latest version
> at https://github.com/igraph/igraph/blob/master/src/foreign-graphml.c (click
> 'Raw' to see the plain file for easy download) which contains an amendment
> regarding this kind of compilation error.
>
> Best,
> J.
>
>
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