diff -Nwaur -x '*svn*' lcgcmake-unedited/cmake/toolchain/heptools-common.cmake lcgcmake/cmake/toolchain/heptools-common.cmake
--- lcgcmake-unedited/cmake/toolchain/heptools-common.cmake	2015-08-24 19:02:28.232457227 +0000
+++ lcgcmake/cmake/toolchain/heptools-common.cmake	2015-08-21 13:32:39.029367379 +0000
@@ -72,9 +72,9 @@
           set(os "cc")
           string(REGEX REPLACE ".*VERSION_ID=\"([0-9]+).*" "\\1" osvers "${os_release}")
         else()
-          message(WARNING "Unkown OS, assuming 'linux'")
-          set(os linux)
-          set(osvers)
+          message(WARNING "Unkown OS, assuming 'slc6'")
+          set(os "slc")
+          set(osvers 6)
         endif()
       endif()
     endif()
diff -Nwaur -x '*svn*' lcgcmake-unedited/externals/CMakeLists.txt lcgcmake/externals/CMakeLists.txt
--- lcgcmake-unedited/externals/CMakeLists.txt	2015-08-24 19:02:30.340232572 +0000
+++ lcgcmake/externals/CMakeLists.txt	2015-08-24 15:57:54.703229141 +0000
@@ -295,10 +295,12 @@
   URL http://grid-deployment.web.cern.ch/grid-deployment/dms/lcgutil/tar/davix/davix-<NATIVE_VERSION>.tar.gz
   CONFIGURE_COMMAND ${CMAKE_COMMAND} -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
                                        -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
-                                       -DBOOST_ROOT:PATHNAME=${Boost_home}
-                                       -DBOOST_INCLUDEDIR=${Boost_home}/include
-                                       -DBOOST_LIBRARYDIR=${Boost_home}/lib 
-                                       -DBoost_NO_BOOST_CMAKE=True
+                                      -DBoost_INCLUDE_DIR:PATH=${Boost_home}/include/boost-1_55
+                                      -DBoost_LIBRARY_DIR_DEBUG:PATH=${Boost_home}/lib
+                                      -DBoost_LIBRARY_DIR_RELEASE:PATH=${Boost_home}/lib
+                                      -DBoost_NO_BOOST_CMAKE:BOOL=True
+                                      -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
+                                      -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
                                        <SOURCE_DIR>
   DEPENDS Boost
 )
@@ -334,7 +336,7 @@
 
 #set(hepmc3_source_command GIT_REPOSITORY https://:@git.cern.ch/kerberos/hepmc3)
 if( hepmc3_native_version MATCHES "githead")
-  set(hepmc3_source_command GIT_REPOSITORY http://git.cern.ch/cernpub/hepmc3)
+  set(hepmc3_source_command GIT_REPOSITORY http://git.cern.ch/pub/hepmc3)
 else()
   set(hepmc3_source_command URL http://service-spi.web.cern.ch/service-spi/external/tarFiles/MCGeneratorsTarFiles/hepmc3-${hepmc3_native_version}.tgz)
 endif()
@@ -358,6 +360,8 @@
              -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
              -DHEPMC_BUILD_EXAMPLES=ON
              -DPYTHIA8_ROOT_DIR=${pythia8_home}
+             -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
+             -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
 	     ${hepmc3_options}
   BUILD_COMMAND ${MAKE} -j1
   DEPENDS ${hepmc3_dependencies}
@@ -839,7 +843,7 @@
   CMAKE_ARGS -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR> 
              -DUNWIND_INCLUDE_DIR:PATH=${libunwind_home}/include
              -DUNWIND_LIBRARY:FILEPATH=${libunwind_home}/lib/libunwind.so
-             "-DCMAKE_CXX_FLAGS=-Wno-unused-variable -Wno-error=unused-result"
+             "-DCMAKE_CXX_FLAGS=-Wno-unused-variable"# -Wno-error=unused-result"
   DEPENDS libunwind
 )
 
diff -Nwaur -x '*svn*' lcgcmake-unedited/generators/CMakeLists.txt lcgcmake/generators/CMakeLists.txt
--- lcgcmake-unedited/generators/CMakeLists.txt	2015-08-24 19:02:35.483031899 +0000
+++ lcgcmake/generators/CMakeLists.txt	2015-08-21 01:39:32.500439326 +0000
@@ -1677,6 +1677,9 @@
     URL ${gen_url}/crmc.v<NATIVE_VERSION>.tar.gz
     CMAKE_ARGS -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
                -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
+               -DCMAKE_MODULE_PATH=${CMAKE_SOURCE_DIR}/cmake/modules
+               -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
+               -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
                -DROOTSYS=${ROOT_home}
                -DHEPMC_PREFIX=${HepMC_home}
                -DBOOST_ROOT=${Boost_home}
diff -Nwaur -x '*svn*' lcgcmake-unedited/projects/CMakeLists.txt lcgcmake/projects/CMakeLists.txt
--- lcgcmake-unedited/projects/CMakeLists.txt	2015-08-24 19:02:35.624216544 +0000
+++ lcgcmake/projects/CMakeLists.txt	2015-08-24 13:27:49.479842060 +0000
@@ -97,6 +97,8 @@
                                          ${graphviz_home} ${GSL_home} ${Qt_home} ${CASTOR_home} ${dcap_home}
     CMAKE_ARGS -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
                -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
+               -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
+               -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
                -Dpython=ON
                -Dbuiltin_pcre=ON
                -Dcintex=ON
@@ -184,6 +186,8 @@
   UPDATE_COMMAND <VOID>
   CMAKE_ARGS -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE} -DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
              -DCMAKE_MODULE_PATH=${cmaketools_home}/modules
+             -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
+             -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
              -DROOTSYS=${ROOT_home}
 #             -DGCCXML=${GCCXML_home}/bin/gccxml
              IF DEFINED GCCXML_native_version THEN 
diff -Nwaur -x '*svn*' lcgcmake-unedited/toolchain.cmake lcgcmake/toolchain.cmake
--- lcgcmake-unedited/toolchain.cmake	2015-08-24 19:02:35.670428000 +0000
+++ lcgcmake/toolchain.cmake	2015-08-21 01:12:00.031530000 +0000
@@ -1,5 +1,5 @@
 # Special wrapper to load the declared version of the heptools toolchain.
-set(LCG_VERSION dev2 CACHE STRING "HepTools version (aka LCG configuration)")
+set(LCG_VERSION 78root6 CACHE STRING "HepTools version (aka LCG configuration)")
 
 # Remove the reference to this file from the cache.
 unset(CMAKE_TOOLCHAIN_FILE CACHE)