title: installing igraph in R failed
body: <p>I have R 3.4.1 on Linux Mint (platform i686-pc-linux-gnu), but the same problem happens with a previous version of R and on Windows as well. When I try to install <code>igraph</code> using <code>install.packages()</code>, this error happens:</p>
  
  <pre><code>foreign-graphml.c: In function ‘igraph_write_graph_graphml’:
  foreign-graphml.c:1408:46: error: expected ‘)’ before ‘GRAPHML_NAMESPACE_URI’
     ret=fprintf(outstream, "&lt;graphml xmlns=\"" GRAPHML_NAMESPACE_URI "\"\n");
                                                ^
  foreign-graphml.c:1412:59: error: expected ‘)’ before ‘GRAPHML_NAMESPACE_URI’
     ret=fprintf(outstream, "         xsi:schemaLocation=\"" GRAPHML_NAMESPACE_URI "\n");
                                                             ^
  foreign-graphml.c:1414:38: error: expected ‘)’ before ‘GRAPHML_NAMESPACE_URI’
     ret=fprintf(outstream, "         " GRAPHML_NAMESPACE_URI "/1.0/graphml.xsd\"&gt;\n");
                                        ^
  /usr/lib/R/etc/Makeconf:159: recipe for target 'foreign-graphml.o' failed
  make: *** [foreign-graphml.o] Error 1
  ERROR: compilation failed for package ‘igraph’
  * removing ‘/home/ninja/R/i686-pc-linux-gnu-library/3.4/igraph’
  Warning in install.packages :
    installation of package ‘igraph’ had non-zero exit status
  </code></pre>
  
  <p>I tried installing from github as well, using something along those lines:</p>
  
  <pre><code>install_github("igraph/rigraph")
  </code></pre>
  
  <p>The second option works just fine, but installs <code>igraph 1.1.0</code>. What I need is 1.1.2, the version I would get with <code>install.packages()</code>.</p>
  
  <p>Any other options?</p>