title: error Installing topicmodels in R Ubuntu
body: <p>I am getting error while installing <code>topicmodels</code> package in <code>R</code>.</p>
  
  <p>on running <code>install.packages("topicmodels",dependencies=TRUE)</code> following are the last few lines I am getting. Please help. My <code>R</code> version is <code>3.1.3</code>.</p>
  
  <pre><code>g++ -I/usr/share/R/include -DNDEBUG      -fpic  -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -Werror=format-security -D_FORTIFY_SOURCE=2 -g  -c utilities.cpp -o utilities.o
  
  gcc -std=gnu99 -I/usr/share/R/include -DNDEBUG      -fpic  -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Wformat-security -Werror=format-security -D_FORTIFY_SOURCE=2 -g  -c utils.c -o utils.o
  
  g++ -shared -L/usr/lib/R/lib -Wl,-Bsymbolic-functions -Wl,-z,relro -o topicmodels.so cokus.o common.o ctm.o dataset.o gsl-wrappers.o inference.o lda-alpha.o lda-inference.o lda-model.o model.o rGibbslda.o rctm.o rlda.o utilities.o utils.o -lgsl -lgslcblas -L/usr/lib/R/lib -lR
  
  installing to /usr/local/lib/R/site-library/topicmodels/libs
  
  ** R
  
  ** data
  
  ** inst
  
  ** preparing package for lazy loading
  
  ** help
  
  *** installing help indices
  
  ** building package indices
  
  ** installing vignettes
  
  ** testing if installed package can be loaded
  
  Error in dyn.load(file, DLLpath = DLLpath, ...) : 
  
    unable to load shared object '/usr/local/lib/R/site-library/topicmodels/libs/topicmodels.so':
  
    libgsl.so.0: cannot open shared object file: No such file or directory
  
  Error: loading failed
  
  Execution halted
  
  ERROR: loading failed
  
  * removing ‘/usr/local/lib/R/site-library/topicmodels’
  
  Warning message:
  
  In install.packages("http://cran.r-project.org/src/contrib/topicmodels_0.2-1.tar.gz",  :
  
    installation of package ‘/tmp/RtmpbX6uuH/downloaded_packages/topicmodels_0.2-1.tar.gz’ had non-zero exit status
  </code></pre>
  
  <p>I have searched for this error at many places but haven't found solution. Please help</p>