diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index aeee9a0f..88381fbf 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -19,7 +19,7 @@ jobs:
           - { os: centos, tag: 7,       arch: rhel   }          # EOL June 2024
           - { os: centos, tag: latest,  arch: rhel   }     # 8 as of April 2020
           - { os: fedora, tag: latest,  arch: rhel   }    # 31 as of April 2020
-        # - { os: fedora, tag: 32,      arch: rhel   } # feeling confident?
+        # - { os: fedora, tag: 33,      arch: rhel   } # feeling confident?
         # - { os: fedora, tag: rawhide, arch: rhel   } # for thrill-seekers only
 
 #-------- Defaults --------------------------
@@ -95,7 +95,11 @@ jobs:
 #-------- Fedora Only Dependencies ----------------
           - cfg: { os: fedora }
             pkg_mgr: dnf
+            conf_pkg: >
+              dnf install -y 'dnf-command(config-manager)' &&
+              dnf config-manager --enable updates-testing
             os_deps: >-
+              clang-10.0.1
               perl-Text-Balanced
               python-devel
               diffutils
diff --git a/autoconf/configure.ac b/autoconf/configure.ac
index 5fa9571b..667f1887 100644
--- a/autoconf/configure.ac
+++ b/autoconf/configure.ac
@@ -441,6 +441,33 @@ AC_PATH_PROG(CLANG, clang, noclang, "$LLVM_BIN_DIR:/bin:/usr/bin:/usr/local/bin:
 AS_IF([test "$ac_cv_path_CLANG" = "noclang"],AC_MSG_ERROR([could not find clang]),[])
 AC_SUBST([LLVM_HOME])
 
+OLD_CLANG_LIBS="-lclangFrontend -lclangDriver -lclangSerialization -lclangParse -lclangSema -lclangAnalysis -lclangEdit -lclangAST -lclangLex -lclangBasic"
+NEW_CLANG_LIBS="-lclang-cpp"
+AC_CHECK_FILE([$LLVM_LIB_DIR/libclangFrontend.a],
+  [
+    ICG_CLANGLIBS="$OLD_CLANG_LIBS"
+  ],
+  AC_CHECK_FILE([$LLVM_LIB_DIR/libclangFrontend.so],
+    [
+      ICG_CLANGLIBS="$OLD_CLANG_LIBS"
+    ],
+    AC_CHECK_FILE([$LLVM_LIB_DIR/libclang-cpp.a],
+      [
+        ICG_CLANGLIBS="$NEW_CLANG_LIBS"
+      ],
+      AC_CHECK_FILE([$LLVM_LIB_DIR/libclang-cpp.so],
+        [
+          ICG_CLANGLIBS="$NEW_CLANG_LIBS"
+        ],
+        AC_MSG_ERROR([could not find clang libs in LLVM library: "$LLVM_LIB_DIR"])
+      )
+    )
+  )
+)
+
+AC_SUBST([ICG_CLANGLIBS])
+
+
 AC_DEFUN([AX_CLANG_VERSION], [
   CLANG_VERSION=""
   ax_cv_clang_version="`$CLANG --version | grep "version" | sed "s/.*version \([0-9]*\.[0-9]*\.[0-9]*\).*/\1/"`"
diff --git a/configure b/configure
index 8b2e35fb..6775975c 100755
--- a/configure
+++ b/configure
@@ -632,6 +632,7 @@ UDUNITS_LDFLAGS
 UDUNITS_INCLUDES
 UDUNITS_HOME
 CLANG_VERSION
+ICG_CLANGLIBS
 LLVM_HOME
 CLANG
 LLVM_CONFIG
@@ -717,7 +718,6 @@ infodir
 docdir
 oldincludedir
 includedir
-runstatedir
 localstatedir
 sharedstatedir
 sysconfdir
@@ -812,7 +812,6 @@ datadir='${datarootdir}'
 sysconfdir='${prefix}/etc'
 sharedstatedir='${prefix}/com'
 localstatedir='${prefix}/var'
-runstatedir='${localstatedir}/run'
 includedir='${prefix}/include'
 oldincludedir='/usr/include'
 docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
@@ -1065,15 +1064,6 @@ do
   | -silent | --silent | --silen | --sile | --sil)
     silent=yes ;;
 
-  -runstatedir | --runstatedir | --runstatedi | --runstated \
-  | --runstate | --runstat | --runsta | --runst | --runs \
-  | --run | --ru | --r)
-    ac_prev=runstatedir ;;
-  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
-  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
-  | --run=* | --ru=* | --r=*)
-    runstatedir=$ac_optarg ;;
-
   -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
     ac_prev=sbindir ;;
   -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
@@ -1211,7 +1201,7 @@ fi
 for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
 		datadir sysconfdir sharedstatedir localstatedir includedir \
 		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
-		libdir localedir mandir runstatedir
+		libdir localedir mandir
 do
   eval ac_val=\$$ac_var
   # Remove trailing slashes.
@@ -1364,7 +1354,6 @@ Fine tuning of the installation directories:
   --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
   --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
   --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
-  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
   --libdir=DIR            object code libraries [EPREFIX/lib]
   --includedir=DIR        C header files [PREFIX/include]
   --oldincludedir=DIR     C header files for non-gcc [/usr/include]
@@ -7189,6 +7178,113 @@ if test "$ac_cv_path_CLANG" = "noclang"; then :
 fi
 
 
+OLD_CLANG_LIBS="-lclangFrontend -lclangDriver -lclangSerialization -lclangParse -lclangSema -lclangAnalysis -lclangEdit -lclangAST -lclangLex -lclangBasic"
+NEW_CLANG_LIBS="-lclang-cpp"
+as_ac_File=`$as_echo "ac_cv_file_$LLVM_LIB_DIR/libclangFrontend.a" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $LLVM_LIB_DIR/libclangFrontend.a" >&5
+$as_echo_n "checking for $LLVM_LIB_DIR/libclangFrontend.a... " >&6; }
+if eval \${$as_ac_File+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  test "$cross_compiling" = yes &&
+  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
+if test -r "$LLVM_LIB_DIR/libclangFrontend.a"; then
+  eval "$as_ac_File=yes"
+else
+  eval "$as_ac_File=no"
+fi
+fi
+eval ac_res=\$$as_ac_File
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+if eval test \"x\$"$as_ac_File"\" = x"yes"; then :
+
+    ICG_CLANGLIBS="$OLD_CLANG_LIBS"
+
+else
+  as_ac_File=`$as_echo "ac_cv_file_$LLVM_LIB_DIR/libclangFrontend.so" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $LLVM_LIB_DIR/libclangFrontend.so" >&5
+$as_echo_n "checking for $LLVM_LIB_DIR/libclangFrontend.so... " >&6; }
+if eval \${$as_ac_File+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  test "$cross_compiling" = yes &&
+  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
+if test -r "$LLVM_LIB_DIR/libclangFrontend.so"; then
+  eval "$as_ac_File=yes"
+else
+  eval "$as_ac_File=no"
+fi
+fi
+eval ac_res=\$$as_ac_File
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+if eval test \"x\$"$as_ac_File"\" = x"yes"; then :
+
+      ICG_CLANGLIBS="$OLD_CLANG_LIBS"
+
+else
+  as_ac_File=`$as_echo "ac_cv_file_$LLVM_LIB_DIR/libclang-cpp.a" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $LLVM_LIB_DIR/libclang-cpp.a" >&5
+$as_echo_n "checking for $LLVM_LIB_DIR/libclang-cpp.a... " >&6; }
+if eval \${$as_ac_File+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  test "$cross_compiling" = yes &&
+  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
+if test -r "$LLVM_LIB_DIR/libclang-cpp.a"; then
+  eval "$as_ac_File=yes"
+else
+  eval "$as_ac_File=no"
+fi
+fi
+eval ac_res=\$$as_ac_File
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+if eval test \"x\$"$as_ac_File"\" = x"yes"; then :
+
+        ICG_CLANGLIBS="$NEW_CLANG_LIBS"
+
+else
+  as_ac_File=`$as_echo "ac_cv_file_$LLVM_LIB_DIR/libclang-cpp.so" | $as_tr_sh`
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $LLVM_LIB_DIR/libclang-cpp.so" >&5
+$as_echo_n "checking for $LLVM_LIB_DIR/libclang-cpp.so... " >&6; }
+if eval \${$as_ac_File+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  test "$cross_compiling" = yes &&
+  as_fn_error $? "cannot check for file existence when cross compiling" "$LINENO" 5
+if test -r "$LLVM_LIB_DIR/libclang-cpp.so"; then
+  eval "$as_ac_File=yes"
+else
+  eval "$as_ac_File=no"
+fi
+fi
+eval ac_res=\$$as_ac_File
+	       { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+if eval test \"x\$"$as_ac_File"\" = x"yes"; then :
+
+          ICG_CLANGLIBS="$NEW_CLANG_LIBS"
+
+else
+  as_fn_error $? "could not find clang libs in LLVM library: \"$LLVM_LIB_DIR\"" "$LINENO" 5
+
+fi
+
+
+fi
+
+
+fi
+
+
+fi
+
+
+
+
+
 
 
   CLANG_VERSION=""
@@ -7298,7 +7394,6 @@ then
         LDFLAGS="$LDFLAGS -L${ZLIB_HOME}/lib"
         CPPFLAGS="$CPPFLAGS -I${ZLIB_HOME}/include"
   fi
-
   ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
diff --git a/share/trick/makefiles/config_user.mk.in b/share/trick/makefiles/config_user.mk.in
index 69e92343..2fe8610b 100644
--- a/share/trick/makefiles/config_user.mk.in
+++ b/share/trick/makefiles/config_user.mk.in
@@ -22,6 +22,7 @@ TRICK_MONGOOSE = @TRICK_MONGOOSE@
 USE_X_WINDOWS = @USE_X_WINDOWS@
 
 LLVM_HOME = @LLVM_HOME@
+ICG_CLANGLIBS = @ICG_CLANGLIBS@
 
 PYTHON_INCLUDES = @PYTHON_CPPFLAGS@
 PYTHON_LIB = @PYTHON_LIBS@ @PYTHON_EXTRA_LIBS@
diff --git a/share/trick/makefiles/config_user_cmake.mk.in b/share/trick/makefiles/config_user_cmake.mk.in
index 8101e3ef..44f7bd76 100644
--- a/share/trick/makefiles/config_user_cmake.mk.in
+++ b/share/trick/makefiles/config_user_cmake.mk.in
@@ -19,6 +19,18 @@ USE_X_WINDOWS = @USE_X_WINDOWS@
 
 LLVM_HOME = @LLVM_ROOT_DIR@
 
+ICG_CLANGLIBS = \
+    -lclangFrontend \
+    -lclangDriver \
+    -lclangSerialization \
+    -lclangParse \
+    -lclangSema \
+    -lclangAnalysis \
+    -lclangEdit \
+    -lclangAST \
+    -lclangLex \
+    -lclangBasic \
+
 PYTHON_INCLUDES = -I@PYTHON_INCLUDE_DIRS@
 PYTHON_LIB = @PYTHON_LIBRARIES@
 
diff --git a/trick_source/codegen/Interface_Code_Gen/makefile b/trick_source/codegen/Interface_Code_Gen/makefile
index 6a188537..34caae37 100644
--- a/trick_source/codegen/Interface_Code_Gen/makefile
+++ b/trick_source/codegen/Interface_Code_Gen/makefile
@@ -29,17 +29,7 @@ OBJECTS = $(addprefix $(OBJ_DIR)/, $(subst .cpp,.o,$(SOURCES)))
 UDUNITS_OBJS = \
     $(OBJ_DIR)/map_trick_units_to_udunits.o
 
-CLANGLIBS = \
-    -lclangFrontend \
-    -lclangDriver \
-    -lclangSerialization \
-    -lclangParse \
-    -lclangSema \
-    -lclangAnalysis \
-    -lclangEdit \
-    -lclangAST \
-    -lclangLex \
-    -lclangBasic \
+CLANGLIBS = $(ICG_CLANGLIBS)
 
 CXXFLAGS += -DLIBCLANG_MAJOR=$(CLANG_MAJOR) -DLIBCLANG_MINOR=$(CLANG_MINOR)
 ifneq ($(CLANG_PATCHLEVEL),)
diff --git a/trigger b/trigger
new file mode 100644
index 00000000..e69de29b