diff --git a/herwig-bootstrap b/herwig-bootstrap
--- a/herwig-bootstrap
+++ b/herwig-bootstrap
@@ -1,683 +1,683 @@
 #! /usr/bin/env python
 import subprocess
 import os, errno, platform
 import urllib2, ssl
 import tarfile
 from optparse import OptionParser, OptionValueError
 from time import sleep
 
 default_cc  = os.getenv('CC','gcc')
 default_cxx = os.getenv('CXX','g++')
 default_fc  = os.getenv('FC','gfortran')
 
 print """
 
 *********************************************************
 * Using CC=%s CXX=%s FC=%s.
 * Set environment variables to change compilers.
 *********************************************************
 
 """ % (default_cc,default_cxx,default_fc)
 
 sleep(1)
 
 parser = OptionParser(usage='Usage: %prog [options] DIR')
 
 # function to set up the standard flags for a program
 def setUpFlags(program,version,build=True) :
     parser.add_option("--with-"+program   ,
                       action='store_true' ,
                       dest=program,
                       default=build,
                       help="Install "+program)
     parser.add_option("--without-"+program,
                       action='store_false',
                       dest=program,
                       default=build,
                       help="Don\'t install "+program)
     parser.add_option("--"+program+"-location",
                       type='string',
                       default="",
                       dest=program+"_loc",
                       help="Location of "+program+" if not installed")
     if version:
         parser.add_option("--"+program+"-version",
                           type='string',
                           default=version,
                           dest=program+"_ver",
                           help="Version of "+program+" to be installed")
 # compiler building
 parser.add_option("--with-gcc",
                   action='store_true' ,
                   dest="gcc",
                   default=False,
                   help="Install the gcc compilers")
 parser.add_option("--gcc-version",
                   type='string',
                   default="4.9.2",
                   dest="gcc_ver",
                   help="Version of gcc to be installed")
 parser.add_option("--gmp-version",
                   type='string',
                   default="6.0.0a",
                   dest="gmp_ver",
                   help="Version of gmp to be installed")
 parser.add_option("--mpfr-version",
                   type='string',
                   default="3.1.2",
                   dest="mpfr_ver",
                   help="Version of mpfr to be installed")
 parser.add_option("--mpc-version",
                   type='string',
                   default="1.0.3",
                   dest="mpc_ver",
                   help="Version of mpc to be installed")
 parser.add_option("--add-lib64",
                   action='store_true',
                   default='store_false',
                   dest="add_lib64",
                   help="Add lib64 to the path, needed on SLC systems")
 # gengetopt if needed
 setUpFlags("gengetopt","2.22.6",False)
 # flags for boost
 setUpFlags("boost","1.58.0")
 parser.add_option("--boost-minimal",
                   action='store_true',
                   dest="boost_minimal",
                   default=True,
                   help='Only install the minimal set of boost libraries needed by Herwig++')
 parser.add_option("--boost-all",
                   action='store_false',
                   dest="boost_minimal",
                   default=True,
                   help='Install all the boost libaries, including those not required by Herwig++')
 # flags for gsl
 setUpFlags("gsl","1.15")
 # flags for fastjet
 setUpFlags("fastjet","3.1.3")
 # flags for hepmc
 setUpFlags("hepmc","2.06.09")
 # flags for lhapdf
 setUpFlags("lhapdf","6.1.5")
 parser.add_option("--add-pdf",
                   action='append',
                   dest="pdfs",
                   default=["MMHT2014lo68cl","MMHT2014nlo68cl"],
                   help='Add a PDF to those to be downloaded by default')
 # flags for yoda
-setUpFlags("yoda","1.3.0")
+setUpFlags("yoda","1.4.0")
 parser.add_option("--yoda-hg",
                   action='store_true',
                   dest="yoda_hg",
                   default=False,
                   help='Get yoda from mercurial')
 parser.add_option("--yoda-tar",
                   action='store_false',
                   dest="yoda_hg",
                   default=False,
                   help='Get yoda from tar ball')
 parser.add_option("--yoda-repo",
                   type='string',                  
                   default="https://yoda.hepforge.org/hg/yoda",
                   dest='yoda_repo',
                   help='The location of the mercurial repository for Yoda')
 # flags for rivet
 setUpFlags("rivet","2.2.0")
 parser.add_option("--rivet-hg",
                   action='store_true',
                   dest="rivet_hg",
                   default=False,
                   help='Get rivet from mercurial')
 parser.add_option("--rivet-tar",
                   action='store_false',
                   dest="rivet_hg",
                   default=False,
                   help='Get rivet from tar ball')
 parser.add_option("--rivet-repo",
                   type='string',                  
                   default="https://rivet.hepforge.org/hg/rivet",
                   dest='rivet_repo',
                   help='The location of the mercurial repository for Rivet')
 # flags for thepeg
 setUpFlags("thepeg","1.9.2")
 parser.add_option("--thepeg-hg",
                   action='store_true',
                   dest="thepeg_hg",
                   default=False,
                   help='Get thepeg from mercurial')
 parser.add_option("--thepeg-tar",
                   action='store_false',
                   dest="thepeg_hg",
                   default=False,
                   help='Get thepeg from tar ball')
 parser.add_option("--thepeg-repo",
                   type='string',                  
                   default="https://thepeg.hepforge.org/hg/ThePEG",
                   dest='thepeg_repo',
                   help='The location of the mercurial repository for ThePEG')
 # madgraph
 setUpFlags("madgraph","2.3.0.beta")
 parser.add_option("--madgraph-bzr",
                   action='store_true',
                   dest="madgraph_bzr",
                   default=False,
                   help='Get madgraph from mercurial')
 parser.add_option("--madgraph-tar",
                   action='store_false',
                   dest="madgraph_bzr",
                   default=False,
                   help='Get madgraph from tar ball')
 parser.add_option("--madgraph-repo",
                   type='string',                  
                   default="lp:~matchboxteam/mg5amcnlo/matchbox_output",
                   dest='madgraph_repo',
                   help='The location of the mercurial repository for Madgraph')
 # flags for njet
 setUpFlags("njet","2.0.0")
 # flags for vbfnlo
 setUpFlags("vbfnlo","2.8.0beta0")
 # flags for GoSam
 setUpFlags("gosam","")
 # flags for OpenLoops
 setUpFlags("openloops","public")
 parser.add_option("--openloops-repo",
                   type='string',
                   default="http://openloops.hepforge.org/svn/OpenLoops/branches",
                   dest='openloops_repo',
                   help='The location of the mercurial repository for OpenLoops')
 parser.add_option("--openloops-processes",
                   type='string',
                   default="ppll",
                   dest='openloops_processes',
                   help='The processes for OpenLoops')
 # flags for herwig
 setUpFlags("herwig","2.7.1")
 parser.add_option("--herwig-hg",
                   action='store_true',
                   dest="herwig_hg",
                   default=False,
                   help='Get herwig from mercurial')
 parser.add_option("--herwig-tar",
                   action='store_false',
                   dest="herwig_hg",
                   default=False,
                   help='Get herwig from tar ball')
 parser.add_option("--herwig-repo",
                   type='string',
                   default="https://herwig.hepforge.org/hg/herwig",
                   dest='herwig_repo',
                   help='The location of the mercurial repository for Herwig')
 # no of cores
 try:
     from multiprocessing import cpu_count
     ncore=max(cpu_count()-1, 1)
     del cpu_count
 except:
     ncore=1
 
 parser.add_option("-j","--ncore",
                   type='int',
                   default=ncore,
                   dest="ncore",
                   help="Number of cores to use with make -j to speed up compilation")
 
 # get the options and locations
 opts, install_loc = parser.parse_args()
 if(len(install_loc) != 1 ) :
     print 'Must specify a build location'
     exit()
 install_loc = install_loc[0]
 # set the base directory
 current_dir=os.getcwd()
 base_dir=os.path.join(current_dir,install_loc)
 if ( not os.path.isdir(base_dir)) :
     os.mkdir(base_dir)
 os.chdir(base_dir)
 # set the environment variables
 if ( 'PATH' in os.environ ) :
     os.environ['PATH'] = base_dir+"/bin:"+os.environ['PATH']
 else :
     os.environ['PATH'] = base_dir+"/bin"
 if ( 'LD_LIBRARY_PATH' in os.environ ) :
     if( not opts.add_lib64) :
         os.environ['LD_LIBRARY_PATH'] = base_dir+"/lib:"+os.environ['LD_LIBRARY_PATH']
     else :
         os.environ['LD_LIBRARY_PATH'] = base_dir+"/lib:"+base_dir+"/lib64:"+os.environ['LD_LIBRARY_PATH']
 else :
     if( not opts.add_lib64) :
         os.environ['LD_LIBRARY_PATH'] = base_dir+"/lib"
     else :
         os.environ['LD_LIBRARY_PATH'] = base_dir+"/lib:"+base_dir+"/lib64"
 # checkout
 def checkout( base, version, repo, branch, repo_type='hg') :
     if( repo_type == 'hg' ) :
         directory=base
         if version:
             directory += "-"+version
         if not os.path.isdir(directory):
             subprocess.check_call(["hg","clone",repo,directory])
         else:
             subprocess.check_call(["hg","pull","-R",directory,repo])
         os.chdir(os.path.join(base_dir,directory))
         subprocess.check_call(["hg","up",branch])
         subprocess.check_call(["autoreconf","-vif"])
     elif(repo_type == "bzr" ) :
         subprocess.check_call(["bzr","co",repo,base])
     elif(repo_type == "svn" ) :
         subprocess.check_call(["svn","checkout",repo+"/"+branch,base])
         os.chdir(os.path.join(base_dir,base))
     else :
         print 'Only supports checkout from hg,svn or bzr'
         exit()
 
 def download_only(url_base,tar_name,distinct=False) :
     if os.access(tar_name, os.R_OK):
         print 'Found existing %s' % tar_name
         return
 
     if distinct:
         program_url = url_base
     else:
         program_url = '%s/%s' % (url_base,tar_name)
     print "Download %s as %s" % (program_url,tar_name)
 
     req_headers = { 
         'User-Agent' : 'herwig-bootstrap',
         'Accept'     : '*/*'
     }
     request = urllib2.Request(program_url, headers=req_headers)
     try:
         context = ssl._create_unverified_context()
         response = urllib2.urlopen(request, context=context)
     except: 
         response = urllib2.urlopen(request) 
 
     with open(tar_name,'w') as f:
         f.write(response.read())
 
 def download(url_base,tar_name,args=[],distinct=False) : 
     download_only(url_base,tar_name,distinct)       
     tar = tarfile.open(tar_name,'r')
     lastfile = tar.getnames()[-1]
     if os.access(lastfile, os.R_OK):
         print 'Extracted %s exists already' % lastfile.split('/')[0]
     else:
         print "Extract %s" % tar_name
         tar.extractall()
     tar.close()
 
 def compile(config_flags=[]) :
     if os.access('Makefile',os.R_OK):
         print 'Makefile exists, skipping configure'
     else:
         flags = ["./configure","--prefix="+base_dir]
         flags += config_flags
         subprocess.check_call(flags)
     subprocess.check_call(["make","-s","-j%s" % opts.ncore])
 
     # TODO ?? skip here if some file already exists in /lib or /bin ??
     subprocess.check_call(["make","-s","install"])
     os.chdir(base_dir)
 
 def downloadAndCompile(url_base,base_name,suffix,config_flags) :
     download(url_base,base_name+suffix)
     os.chdir(os.path.join(base_dir,base_name))
     compile(config_flags)
 
 def deletelibtool() :
     for directory in ["lib","lib64","lib32"] :
         full_path = os.path.join(base_dir,directory)
         if os.path.isdir(full_path) :
             subprocess.check_call(["find",full_path,"-name","*.la","-delete"])
 
 def buildgcc() :
     # build gmp with --enable-fat to allow portability
     # --enable-fat currently broken on Mac, see
     # https://gmplib.org/repo/gmp/raw-rev/1fab0adc5ff7
     gmp_fatoption = ['--enable-fat']
     if platform.system() == 'Darwin':
         gmp_fatoption = []
 
     if(opts.gmp_ver.endswith("a")) :
         ver2=opts.gmp_ver[:-1]
         program_url="https://gmplib.org/download/gmp/gmp-"+opts.gmp_ver+".tar.bz2"
         download(program_url, "gmp-"+ver2+".tar.bz2",distinct=True)
         os.chdir(os.path.join(base_dir,"gmp-"+ver2))
         compile(gmp_fatoption)
     else :
         downloadAndCompile("https://gmplib.org/download/gmp","gmp-"+opts.gmp_ver,".tar.bz2",gmp_fatoption)
     # build mpfr
     downloadAndCompile("http://mpfr.loria.fr/mpfr-"+opts.mpfr_ver,"mpfr-"+opts.mpfr_ver,".tar.bz2",["--with-gmp="+base_dir])
     # build mpc
     downloadAndCompile("http://www.multiprecision.org/mpc/download/","mpc-"+opts.mpc_ver,".tar.gz",["--with-gmp="+base_dir,"--with-mpfr="+base_dir])
     # gcc
     download("ftp://ftp.mirrorservice.org/sites/sourceware.org/pub/gcc/releases/gcc-"+opts.gcc_ver,
              "gcc-"+opts.gcc_ver+".tar.bz2")
     obj_path=os.path.join(base_dir,"obj")
     if not os.access(obj_path, os.R_OK):
         os.mkdir(obj_path)
         os.chdir(obj_path)
     else:
         os.chdir(obj_path)
         subprocess.check_call(["make","distclean"]) #posisble issues re-running configure, distclean directory first
 
     gcc_version=opts.gcc_ver.split(".")
     flags=["../gcc-"+opts.gcc_ver+"/configure","--prefix="+base_dir]
     if (int(gcc_version[0]) == 3) :
         flags.append("--enable-languages=c,c++,f77")
     elif (int(gcc_version[0]) >= 4) :
         if(int(gcc_version[0]) == 4 and int(gcc_version[1])==0) :
             flags.append("--enable-languages=c,c++,f95")
         else :
             flags.append("--enable-languages=c,c++,fortran")
             flags.append("--with-gmp="+base_dir)
             flags.append("--with-mpfr="+base_dir)
             if(int(gcc_version[0]) > 4 or (int(gcc_version[0]) == 4 and int(gcc_version[1])>=4 )) :
                 flags.append("--with-mpc="+base_dir)
     subprocess.check_call(flags)
     subprocess.check_call(["make","-s","-j"+str(opts.ncore)])
     subprocess.check_call(["make","-s","install"])
     os.chdir(base_dir)
     deletelibtool()
 
 
 
 # download and compile gcc
 if(opts.gcc) :
     buildgcc()
 
 if(opts.gengetopt) :
     tmp_ncore=opts.ncore
     opts.ncore=1
     downloadAndCompile("ftp://ftp.gnu.org/gnu/gengetopt/",
                        "gengetopt-"+opts.gengetopt_ver,".tar.gz",[])
     opts.ncore=tmp_ncore
 
 
 
 # install boost if required
 if (opts.boost) :
     boost_ver2=opts.boost_ver.replace(".","_")
     boost_base = "boost_"+ boost_ver2
     download("http://sourceforge.net/projects/boost/files/boost/"+ opts.boost_ver,
              boost_base+".tar.bz2")
     os.chdir(os.path.join(base_dir,boost_base))
     if(opts.boost_minimal) :
-        subprocess.check_call(["./bootstrap.sh","--prefix="+base_dir,'threading=multi',"--with-libraries=filesystem,system"])
+        subprocess.check_call(["./bootstrap.sh","--prefix="+base_dir,'threading=multi',"--with-libraries=filesystem,system,test"])
     else :
         subprocess.check_call(["./bootstrap.sh","--prefix="+base_dir,'threading=multi'])
     subprocess.check_call(["./b2","--layout=tagged","install","-j"+str(opts.ncore)])
     os.chdir(base_dir)
     boost_loc=base_dir
 else :
     boost_loc=opts.boost_loc
 
 
 
 # install gsl if required
 if(opts.gsl) :
     downloadAndCompile("http://www.mirrorservice.org/sites/ftp.gnu.org/gnu/gsl",
                        "gsl-"+opts.gsl_ver,".tar.gz",
                        [])
     gsl_loc=base_dir
 else :
     gsl_loc=opts.gsl_loc
 
 
 
 # install fastjet if required
 if( opts.fastjet) :
     downloadAndCompile("http://fastjet.fr/repo",
                        "fastjet-"+opts.fastjet_ver,".tar.gz",
                        ["--enable-allplugins"])
     fastjet_loc=base_dir
 else :
     fastjet_loc=opts.fastjet_loc
 
 
 
 # install hepmc if needed
 if( opts.hepmc) :
     downloadAndCompile("http://lcgapp.cern.ch/project/simu/HepMC/download",
                        "HepMC-"+opts.hepmc_ver,".tar.gz",
                        ["--with-momentum=GEV","--with-length=MM"])
     hepmc_loc=base_dir
 else :
     hepmc_loc=opts.hepmc_loc
 
 
 
 # install lhapdf if needed
 if( opts.lhapdf) :
     args=[]
     if boost_loc:
         args.append("--with-boost="+boost_loc)
     downloadAndCompile("http://www.hepforge.org/archive/lhapdf",
                        "LHAPDF-"+opts.lhapdf_ver,".tar.gz",
                        args)
     for pdf in opts.pdfs :
         subprocess.check_call(["bin/lhapdf","install",pdf])
 # ./configure --prefix=$root_dir -enable-pdfsets=all
     lhapdf_loc=base_dir
 else :
     lhapdf_loc=opts.lhapdf_loc
 
 
 
 # install yoda if needed
 if( opts.yoda) :
     # from tar ball
     if(not opts.yoda_hg) :
         download("http://www.hepforge.org/archive/yoda",
                  "YODA-"+opts.yoda_ver+".tar.bz2")
         os.chdir(os.path.join(base_dir,"YODA-"+opts.yoda_ver))
     else :
         if opts.yoda_ver :
             if(len(opts.rivet_ver)==5) :
                 branch="yoda-"+opts.yoda_ver
             else :
                 branch=opts.yoda_ver
         else :
             branch=""
         checkout("YODA",opts.yoda_ver,opts.yoda_repo,branch)
     args=[]
     if boost_loc:
         args.append("--with-boost="+boost_loc)
     compile(args)
     yoda_loc=base_dir
 else :
     yoda_loc=opts.yoda_loc
 
 
 
 # install rivet if needed
 if( opts.rivet) :
     # from tar ball
     if(not opts.rivet_hg) :
         download("http://www.hepforge.org/archive/rivet",
                  "Rivet-"+opts.rivet_ver+".tar.bz2")
         os.chdir(os.path.join(base_dir,"Rivet-"+opts.rivet_ver))
     else :
         if(len(opts.rivet_ver)==5) :
             branch="rivet-"+opts.rivet_ver
         else :
             branch=opts.rivet_ver
         checkout("Rivet",opts.rivet_ver,opts.rivet_repo,branch)
     args=["--enable-unvalidated"]
     if boost_loc:
         args.append("--with-boost="+boost_loc)
     if gsl_loc:
         args.append("--with-gsl="+gsl_loc)
     if yoda_loc:
         args.append("--with-yoda="+yoda_loc)
     if hepmc_loc:
         args.append("--with-hepmc="+hepmc_loc)
     if fastjet_loc:
         args.append("--with-fastjet="+fastjet_loc)
     compile(args)
     rivet_loc=base_dir
 else :
     rivet_loc=opts.rivet_loc
 
 
 
 # install thepeg if needed
 if( opts.thepeg) :
     # from tar ball
     if(not opts.thepeg_hg) :
         download("http://www.hepforge.org/archive/thepeg","ThePEG-"+opts.thepeg_ver+".tar.bz2")
         os.chdir(os.path.join(base_dir,"ThePEG-"+opts.thepeg_ver))
     else :
         if(len(opts.thepeg_ver)==5) :
             branch="release-"+opts.thepeg_ver.replace(".","-")
         else :
             branch=opts.thepeg_ver
         checkout("ThePEG",opts.thepeg_ver,opts.thepeg_repo,branch)
     args=[]
     if fastjet_loc:
         args.append("--with-fastjet="+fastjet_loc)
     if gsl_loc:
         args.append("--with-gsl="+gsl_loc)
     if rivet_loc:
         args.append("--with-rivet="+rivet_loc)
     if hepmc_loc:
         args.append("--with-hepmc="+hepmc_loc)
     if lhapdf_loc:
         args.append("--with-lhapdf="+lhapdf_loc)
     compile(args)
     thepeg_loc=base_dir
 else :
     thepeg_loc=opts.thepeg_loc
 
 
 
 # install madgraph
 if opts.madgraph:
     # from tar ball
     if(not opts.madgraph_bzr) :
         download("https://launchpad.net/mg5amcnlo/2.0/2.2.0/+download","MG5_aMC_v"+opts.madgraph_ver+".tar.gz")
         madgraph_loc=os.path.join(base_dir,"MG5_aMC_v"+opts.madgraph_ver.replace(".","_"))
     else :
         checkout("madgraph",opts.madgraph_ver,opts.madgraph_repo,"",'bzr')
         madgraph_loc=os.path.join(base_dir,"madgraph")
 else :
     madgraph_loc=opts.madgraph_loc
 
 
 
 # install the NLO codes if needed
 # install njet if required
 if opts.njet:
     downloadAndCompile("https://bitbucket.org/njet/njet/downloads",
                        "njet-"+opts.njet_ver,".tar.gz",
                        ["--disable-autoflags",
                         "FC="+default_fc,
                         "F77="+default_fc])
     njet_loc=base_dir
 else :
     njet_loc=opts.njet_loc
 
 
 OPENLOOPS_CONFIG = """\
 [OpenLoops]
 fortran_compiler = {fc}
 # fortran_tool = 'gfortran'
 compile_extra = 0
 """
 
 # install openloops if needed
 if opts.openloops:
     checkout("OpenLoops",opts.openloops_ver,opts.openloops_repo,opts.openloops_ver,'svn')
 
     with open('openloops.cfg','w') as f:
         f.write(OPENLOOPS_CONFIG.format(fc=default_fc))
 
     subprocess.check_call(["./openloops",
                            "libinstall",
                            opts.openloops_processes,
                            "num_jobs=%s" % opts.ncore
                           ])
     os.chdir(base_dir)
     openloops_loc=base_dir+"/OpenLoops"
 else :
     openloops_loc=opts.openloops_loc
 
 
 
 # install gosam if needed
 if opts.gosam:
     gosam_dir=os.path.join(base_dir,"GoSam")
     try:
         os.mkdir(gosam_dir)
     except OSError as e:
         # ignore if directory exists already
         if e.errno != errno.EEXIST: raise
     os.chdir(gosam_dir)
     download_only("http://gosam.hepforge.org","gosam_installer.py")
     os.chmod("./gosam_installer.py",0755)
     subprocess.check_call(["./gosam_installer.py",
                            "-b",
                            "-v",
                            "--prefix="+base_dir,
                            "--fc="+default_fc,
                            "--cc="+default_cc,
                            "--cxx="+default_cxx])
     os.chdir(base_dir)
     gosam_loc=base_dir
 else :
     gosam_loc=opts.gosam_loc
 
 
 
 # install vbfnlo if required
 if opts.vbfnlo:
     download("http://www.itp.kit.edu/~vbfnloweb/archive","vbfnlo-"+opts.vbfnlo_ver+".tgz")
     os.chdir(os.path.join(base_dir,"VBFNLO-"+opts.vbfnlo_ver))
     subprocess.check_call(["./configure","--prefix="+base_dir])
     subprocess.check_call(["make","-s","-j%s"%opts.ncore])
     subprocess.check_call(["make","-s","install"])
     os.chdir(base_dir)
     vbfnlo_loc=base_dir
 else:
     vbfnlo_loc=opts.vbfnlo_loc
 
 
 
 # install herwig if needed
 if opts.herwig:
     # from tar ball
     if not opts.herwig_hg:
         download("http://www.hepforge.org/archive/herwig","Herwig++-"+opts.herwig_ver+".tar.bz2")
         os.chdir(os.path.join(base_dir,"Herwig++-"+opts.herwig_ver))
     else:
         if len(opts.herwig_ver)==5:
             branch = "release-"+opts.herwig_ver.replace(".","-")
         else:
             branch = opts.herwig_ver
         checkout("Herwig++",opts.herwig_ver,opts.herwig_repo,branch)
     args=[]
     if gsl_loc:
         args.append("--with-gsl="+gsl_loc)
     if fastjet_loc:
         args.append("--with-fastjet="+fastjet_loc)
     if thepeg_loc:
         args.append("--with-thepeg="+thepeg_loc)
     if boost_loc:
         args.append("--with-boost="+boost_loc)
     if madgraph_loc:
         args.append("--with-madgraph="+madgraph_loc)
     if njet_loc:
         args.append("--with-njet="+njet_loc)
     if openloops_loc:
         args.append("--with-openloops="+openloops_loc)
 #        args.append("LD_LIBRARY_PATH="+openloops_loc+"/OpenLoops/lib:$LD_LIBRARY_PATH")
     if gosam_loc:
         args.append("--with-gosam="+gosam_loc)
     if vbfnlo_loc:
         args.append("--with-vbfnlo="+vbfnlo_loc)
     compile(args)
     herwig_loc=base_dir
 else:
     herwig_loc=opts.herwig_loc
 # back to the original directory
 os.chdir(current_dir)