diff --git a/CMakeLists.txt b/CMakeLists.txt
index fa83859b8..5a273e21f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -37,7 +37,7 @@ ELSE()
     # Define the paths to the source code and python files
     SET(SRC "${CMAKE_SOURCE_DIR}/src")
     SET(PY "${CMAKE_SOURCE_DIR}/swiftest")
-    MESSAGE(STATUS "CMAKE_Fortran_PREPROCESS_SOURCE: ${CMAKE_Fortran_PREPROCESS_SOURCE}")
+
     # Make sure paths are correct for Unix or Windows style
     FILE(TO_CMAKE_PATH ${SRC} SRC)
     FILE(TO_CMAKE_PATH ${PY} PY)
@@ -49,9 +49,9 @@ ELSE()
         SET(INSTALL_INCLUDEDIR ${SKBUILD_HEADERS_DIR}) 
         SET(INSTALL_PYPROJ ${SKBUILD_PLATLIB_DIR}/${SKBUILD_PROJECT_NAME}) 
         IF (APPLE)
-            SET(CMAKE_INSTALL_RPATH "@loader_path")
+            SET(CMAKE_INSTALL_RPATH "@loader_path/../lib")
         ELSEIF (LINUX)
-            SET(CMAKE_INSTALL_RPATH $ORIGIN)
+            SET(CMAKE_INSTALL_RPATH $ORIGIN/../lib)
         ENDIF ()
     ELSE ()
         SET(INSTALL_PYPROJ ${PY})
@@ -79,7 +79,7 @@ ELSE()
 
     # The following section is modified from Numpy f2py documentation
     IF(PROJECT_SOURCE_DIR STREQUAL PROJECT_BINARY_DIR)
-    MESSAGE(FATAL_ERROR "In-source builds not allowed. Please make a new directory (called a build directory) and run CMake from there.\n")
+        MESSAGE(FATAL_ERROR "In-source builds not allowed. Please make a new directory (called a build directory) and run CMake from there.\n")
     ENDIF()
 
     FIND_PACKAGE(NETCDF_Fortran REQUIRED)
@@ -119,6 +119,9 @@ ELSE()
 
     INCLUDE(SetSwiftestFlags) 
 
+    IF (NOT BUILD_SHARED_LIBS)
+        SET(CMAKE_POSITION_INDEPENDENT_CODE ON)
+    ENDIF()
     # The source for the SWIFTEST binary and have it placed in the bin folder
     ADD_SUBDIRECTORY(${SRC} ${CMAKE_INSTALL_BINDIR})
     ADD_SUBDIRECTORY(${PY})
diff --git a/buildscripts/build_shtools.sh b/buildscripts/build_shtools.sh
index 5ffe9f029..2e9795275 100755
--- a/buildscripts/build_shtools.sh
+++ b/buildscripts/build_shtools.sh
@@ -49,8 +49,8 @@ case $FC in
         ;;
     *)
         echo "Everything else"
-        make F95="${FC}" CXX="${CXX}" fortran
-        make F95="${FC}" CXX="${CXX}" fortran-mp
+        make F95="${FC}" CXX="${CXX}" F95FLAGS="-fPIC -m64 -O3 -std=gnu -ffast-math" fortran
+        make F95="${FC}" CXX="${CXX}" F95FLAGS="-fPIC -m64 -O3 -std=gnu -ffast-math" fortran-mp
         ;;
 esac
 
diff --git a/buildscripts/set_compilers.sh b/buildscripts/set_compilers.sh
index 85bfa2762..d3ce4358d 100755
--- a/buildscripts/set_compilers.sh
+++ b/buildscripts/set_compilers.sh
@@ -55,7 +55,7 @@ case $OS in
     MacOSX)
         FC=${HOMEBREW_PREFIX}/bin/gfortran-12
         CFLAGS="-mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET} -Wno-deprecated-non-prototype -arch ${ARCH}"
-        FCFLAGS="-mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET} -arch ${ARCH} -fno-underscoring"
+        FCFLAGS="-mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET} -arch ${ARCH}"
         FFLAGS=$FCFLAGS
         LD_LIBRARY_PATH=""
         CPATH=""
diff --git a/buildscripts/set_environment_macos.sh b/buildscripts/set_environment_macos.sh
index 6c255c65c..341d3dea0 100755
--- a/buildscripts/set_environment_macos.sh
+++ b/buildscripts/set_environment_macos.sh
@@ -12,7 +12,7 @@ CPATH="/usr/local/include:${PREFIX}/include:${HOMEBREW_PREFIX}/include:${ROOT_DI
 CPPFLAGS="-isystem ${PREFIX}/include -isystem /usr/local/include -Xclang -fopenmp"
 LIBS="-lomp"
 CFLAGS="-mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET} -Wno-deprecated-non-prototype -arch ${ARCH}"
-FCFLAGS="-mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET} -fno-underscoring"
+FCFLAGS="-mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET}"
 FFLAGS="${FCFLAGS}"
 CFLAGS="${FCFLAGS} -Wno-deprecated-non-prototype"
 CXXFLAGS="${CFLAGS}"
diff --git a/cmake/Modules/FindSHTOOLS.cmake b/cmake/Modules/FindSHTOOLS.cmake
index 5564f786e..dd9b0e581 100644
--- a/cmake/Modules/FindSHTOOLS.cmake
+++ b/cmake/Modules/FindSHTOOLS.cmake
@@ -11,6 +11,8 @@
 FIND_PATH(SHTOOLS_INCLUDE_DIR NAMES shtools.h HINTS ENV SHTOOLS_HOME PATH_SUFFIXES include)
 FIND_LIBRARY(SHTOOLS_LIBRARY NAMES libSHTOOLS.a HINTS ENV SHTOOLS_HOME PATH_SUFFIXES lib)
 ADD_LIBRARY(SHTOOLS::serial UNKNOWN IMPORTED PUBLIC)
+FIND_PACKAGE(FFTW3 REQUIRED)
+FIND_PACKAGE(BLAS REQUIRED)
 SET_TARGET_PROPERTIES(SHTOOLS::serial PROPERTIES 
    IMPORTED_LOCATION "${SHTOOLS_LIBRARY}"
    INTERFACE_INCLUDE_DIRECTORIES "${SHTOOLS_INCLUDE_DIR}"
@@ -22,8 +24,11 @@ SET_TARGET_PROPERTIES(SHTOOLS::parallel PROPERTIES
    IMPORTED_LOCATION "${SHTOOLS_LIBRARY_MP}"
    INTERFACE_INCLUDE_DIRECTORIES "${SHTOOLS_INCLUDE_DIR}"
 )
-
 SET(SHTOOLS_FOUND TRUE)
+
+# These libraries are required
+# How do I get them to link to the SHTOOLS library?
+
 MARK_AS_ADVANCED(SHTOOLS_LIBRARY SHTOOLS_LIBRARY_MP SHTOOLS_INCLUDE_DIR)
 MESSAGE(STATUS "SHTOOLS library: ${SHTOOLS_LIBRARY}")
 MESSAGE(STATUS "SHTOOLS OpenMP library: ${SHTOOLS_LIBRARY_MP}")
diff --git a/cmake/Modules/SetSwiftestFlags.cmake b/cmake/Modules/SetSwiftestFlags.cmake
index f4be6a6dc..f419a886a 100644
--- a/cmake/Modules/SetSwiftestFlags.cmake
+++ b/cmake/Modules/SetSwiftestFlags.cmake
@@ -76,10 +76,6 @@ IF (COMPILER_OPTIONS STREQUAL "GNU")
     SET_COMPILE_FLAG(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS}"
         Fortran "-ffree-form" # GNU
         ) 
-    # Don't add underscores in symbols for C-compatability
-    SET_COMPILE_FLAG(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS}"
-        Fortran "-fno-underscoring" # GNU
-        ) 
     # Compile code assuming that IEEE signaling NaNs may generate user-visible traps during floating-point operations. 
     # Setting this option disables optimizations that may change the number of exceptions visible with signaling NaNs. 
     SET_COMPILE_FLAG(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS}"
@@ -93,6 +89,10 @@ IF (COMPILER_OPTIONS STREQUAL "GNU")
     SET_COMPILE_FLAG(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS}"
         Fortran "-std=f2018" 
         )
+    SET_COMPILE_FLAG(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS}"
+        Fortran "-fPIC"
+        )
+    
 ELSEIF (COMPILER_OPTIONS STREQUAL "Intel")
     # Disables right margin wrapping in list-directed output
     IF (WINOPT)
@@ -557,6 +557,9 @@ IF (CMAKE_BUILD_TYPE STREQUAL "RELEASE" OR CMAKE_BUILD_TYPE STREQUAL "PROFILE")
             SET_COMPILE_FLAG(CMAKE_Fortran_FLAGS_RELEASE "${CMAKE_Fortran_FLAGS_RELEASE}"
                 Fortran "-mkl"     
             ) 
+            SET_COMPILE_FLAG(CMAKE_Fortran_FLAGS_RELEASE "${CMAKE_Fortran_FLAGS_RELEASE}"
+                Fortran "-qmkl"     
+            ) 
             # Enables additional interprocedural optimizations for a single file compilation
             SET_COMPILE_FLAG(CMAKE_Fortran_FLAGS_RELEASE "${CMAKE_Fortran_FLAGS_RELEASE}"
                 Fortran "-ip"  # Intel
@@ -572,6 +575,9 @@ IF (CMAKE_BUILD_TYPE STREQUAL "RELEASE" OR CMAKE_BUILD_TYPE STREQUAL "PROFILE")
         SET_COMPILE_FLAG(CMAKE_Fortran_FLAGS_RELEASE "${CMAKE_Fortran_FLAGS_RELEASE}"
             Fortran "-finline-functions" # GNU
         )
+        SET_COMPILE_FLAG(CMAKE_Fortran_LINK_FLAGS "${CMAKE_Fortran_FLAGS_RELEASE}"
+            Fortran "-llapack"     
+        ) 
     ENDIF ()
 ENDIF ()
  
diff --git a/pyproject.toml b/pyproject.toml
index 6981cdee9..e7b7f442a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -90,7 +90,7 @@ LDFLAGS="-Wl,-rpath,${ROOT_DIR}/lib  -Wl,-no_compact_unwind -L${PREFIX}/lib -L${
 CPATH="/usr/local/include:${PREFIX}/include:${HOMEBREW_PREFIX}/include:${ROOT_DIR}/include"
 CPPFLAGS="-isystem ${PREFIX}/include -isystem /usr/local/include"
 LIBS="-lomp"
-FCFLAGS="-mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET} -arch ${ARCH} -fno-underscoring"
+FCFLAGS="-mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET} -arch ${ARCH}"
 FFLAGS="${FCFLAGS}"
 CFLAGS="${FCFLAGS} -Wno-deprecated-non-prototype -arch ${ARCH}"
 CXXFLAGS="${CFLAGS}"
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 1927b61d9..791da694b 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -129,7 +129,6 @@ ADD_EXECUTABLE(${SWIFTEST_DRIVER} ${DRIVER_src})
 #####################################################
 # Create a library from the source files, except the driver
 ADD_LIBRARY(${SWIFTEST_LIBRARY} ${SWIFTEST_src})
-SET_PROPERTY(TARGET ${SWIFTEST_LIBRARY} ${SWIFTEST_DRIVER} PROPERTY POSITION_INDEPENDENT_CODE)
 
 TARGET_LINK_LIBRARIES(${SWIFTEST_LIBRARY} PUBLIC netCDF::netcdff HDF5::HDF5)
 TARGET_LINK_LIBRARIES(${SWIFTEST_DRIVER} PUBLIC netCDF::netcdff HDF5::HDF5)
diff --git a/src/bindings/bindings_module.f90 b/src/bindings/bindings_module.f90
index 9664c87fe..6f27a091a 100644
--- a/src/bindings/bindings_module.f90
+++ b/src/bindings/bindings_module.f90
@@ -29,7 +29,7 @@ subroutine bindings_c2f_string(c_string, f_string)
          return
       end subroutine bindings_c2f_string
 
-      subroutine bindings_c_driver(c_integrator, c_param_file_name, c_display_style) bind(c)
+      subroutine bindings_c_driver(c_integrator, c_param_file_name, c_display_style) bind(c, name="bindings_c_driver")
          implicit none
          character(kind=c_char), dimension(*), intent(in) :: c_integrator, c_param_file_name, c_display_style
          character(len=:), allocatable :: integrator, param_file_name, display_style
diff --git a/swiftest/CMakeLists.txt b/swiftest/CMakeLists.txt
index 579634562..39a52ddea 100644
--- a/swiftest/CMakeLists.txt
+++ b/swiftest/CMakeLists.txt
@@ -32,9 +32,6 @@ ADD_CUSTOM_COMMAND(
 
 PYTHON_ADD_LIBRARY(${SWIFTEST_BINDINGS} MODULE "${CMAKE_CURRENT_BINARY_DIR}/${SWIFTEST_BINDINGS}.c" WITH_SOABI)
 
-IF (NOT BUILD_SHARED_LIBS) 
-    SET_PROPERTY(TARGET ${SWIFTEST_BINDINGS} PROPERTY POSITION_INDEPENDENT_CODE)
-ENDIF ()
 TARGET_LINK_LIBRARIES(${SWIFTEST_BINDINGS} PUBLIC ${SWIFTEST_LIBRARY} netCDF::netcdff HDF5::HDF5)
 
 IF(USE_OPENMP OR USE_SIMD)