diff --git a/CMakeLists.txt b/CMakeLists.txt
index f18904d6..8bbf2dae 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required (VERSION 3.16)
-project (CHM-project CXX Fortran)
+project (CHM-project C CXX Fortran)
 
 # In CMake 3.12 and above the find_package(<PackageName>) command now searches prefixes specified by the <PackageName>_ROOT
 # CMake variable and the <PackageName>_ROOT environment variable.
@@ -27,10 +27,10 @@ option(OMP_SAFE_EXCEPTION "Enables safe exception handling from within OMP regio
 option(ENABLE_SAFE_CHECKS "Enable variable map checking. Runtime perf cost. Allows for ensuring a variable is indeed available to be lookedup." ON)
 option(BUILD_TESTS "Build all tests."  OFF ) # Makes boolean 'test' available.
 option(STATIC_ANLAYSIS "Enable PVS static anlaysis" OFF)
-option(USE_TCMALLOC "Use tcmalloc from gperftools " ON)
-option(USE_JEMALLOC "Use jemalloc" OFF)
+option(USE_TCMALLOC "Use tcmalloc from gperftools " OFF)
+option(USE_JEMALLOC "Use jemalloc" ON)
 option(BUILD_DOCS "Builds documentation" OFF)
-option(BUILD_WITH_CONAN "Uses Conan for dependencies" ON)
+
 
 message(STATUS "This is an MPI build? ${USE_MPI}")
 
@@ -56,13 +56,10 @@ endif()
 
 LIST(APPEND CMAKE_PREFIX_PATH "${CMAKE_BINARY_DIR}")
 LIST(APPEND CMAKE_MODULE_PATH "${CMAKE_BINARY_DIR}")
-
 LIST(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/CMake/")
+LIST(APPEND CMAKE_PREFIX_PATH "${CMAKE_SOURCE_DIR}/CMake-without-conan/")
+LIST(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/CMake-without-conan/")
 
-if(NOT BUILD_WITH_CONAN)
-    LIST(APPEND CMAKE_PREFIX_PATH "${CMAKE_SOURCE_DIR}/CMake-without-conan/")
-    LIST(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/CMake-without-conan/")
-endif()
 
 #########
 # lovely CMake script to integrate git hashes
@@ -126,22 +123,10 @@ endmacro()
 include(${CMAKE_CURRENT_SOURCE_DIR}/cmake_find_names.cmake)
 
 # Need to check for MPI before building external libraries
-find_package(MPI)
+find_package(MPI REQUIRED COMPONENTS C CXX Fortran) # MPI_C is needed for the mpi that HDF can bring in
 if(MPI_FOUND AND USE_MPI)
     message(STATUS "Found MPI at ${MPI_CXX_INCLUDE_DIRS}")
     add_definitions(-DUSE_MPI)
-
-    if(BUILD_WITH_CONAN)
-        # ensure boost MPI support was built
-        if(MPI_FOUND AND USE_MPI)
-            file(READ ${CMAKE_BINARY_DIR}/FindBoost.cmake txt)
-            string(FIND "${txt}" "boost_mpi" RETCODE)
-
-            if(${RETCODE} EQUAL -1) # -1 is not found retcode from find
-                message(FATAL_ERROR "MPI was asked for, however boost was not built with mpi. Please build boost (--build boost) locally with a working MPI. See wiki for more information.")
-            endif()
-        endif()
-    endif()
 else()
   message(WARNING "MPI not enabled. Building for single process.")
 endif()
@@ -267,47 +252,26 @@ find_package(${METEOIO} REQUIRED)
 find_package(${ARMADILLO} REQUIRED)
 create_target(ARMADILLO) #needs to be upper-case
 
-if(BUILD_WITH_CONAN)
-    find_package(${EIGEN3} REQUIRED)
-else()
-    find_package(${EIGEN3} REQUIRED NO_MODULE)
-endif()
+find_package(${EIGEN3} REQUIRED NO_MODULE)
 
-# The trilinos library may have been built against a custom location blas/openblas
-# If so, conaninfo.txt has information on the custom blas location if given with the -o trilinos:blas_root=<root> option
-# If conaninfo.txt has a custom blas location, extract it and pass it as a hint to find_package(blas) which will detect any blas.
-# Then use the find_package link target in CHM to fully avoid any problems of linking against the wrong blas or not being able to find it.
-#if(BUILD_WITH_CONAN)
-#    if(EXISTS "${CMAKE_BINARY_DIR}/conaninfo.txt")
-#        file(READ ${CMAKE_BINARY_DIR}/conaninfo.txt conaninfotxt)
-#        string(REGEX MATCH "trilinos:blas_root=([^ ]+)lib" blasloc "${conaninfotxt}") # because cmake regex is only greedy
-#        if(NOT "${blasloc}" STREQUAL "")
-#            string(REPLACE "\n" "" blasloc ${CMAKE_MATCH_1}) # strip out a new line we've picked up
-#            message(WARNING "Using the conaninfo.txt trilinos:blas_root=${blasloc}")
-#            set(BLAS_ROOT ${blasloc})
-#        endif()
-#    elseif()
-#        set(blasloc "")
-#    endif()
-#endif()
 
 # we build blas from conan so do not do this if we are using the full conan stack
-if(MACOSX AND NOT BUILD_WITH_CONAN)
-
-    execute_process(
-            COMMAND brew --prefix openblas
-            RESULT_VARIABLE BREW_BLAS
-            OUTPUT_VARIABLE BREW_BLAS_PREFIX
-            OUTPUT_STRIP_TRAILING_WHITESPACE
-    )
-
-    if(BREW_BLAS EQUAL 0)
-        message(WARNING "Found homebrew OpenBLAS ${BREW_BLAS_PREFIX}" )
-        set(BLAS_ROOT ${BREW_BLAS_PREFIX})
-        set(BLA_VENDOR Generic)
-    endif()
-
-endif()
+#if(MACOSX AND NOT BUILD_WITH_CONAN)
+#
+#    execute_process(
+#            COMMAND brew --prefix openblas
+#            RESULT_VARIABLE BREW_BLAS
+#            OUTPUT_VARIABLE BREW_BLAS_PREFIX
+#            OUTPUT_STRIP_TRAILING_WHITESPACE
+#    )
+#
+#    if(BREW_BLAS EQUAL 0)
+#        message(WARNING "Found homebrew OpenBLAS ${BREW_BLAS_PREFIX}" )
+#        set(BLAS_ROOT ${BREW_BLAS_PREFIX})
+#        set(BLA_VENDOR Generic)
+#    endif()
+#
+#endif()
 
 
 find_package(${SPARSEHASH})