diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index cff6fd6b..d9dcc4b8 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -191,9 +191,14 @@ jobs:
       working-directory: verification
       run: |
         cmake -DNUNAVUT_EXTRA_GENERATOR_ARGS="--enable-override-variable-array-capacity;--embed-auditing-info" --preset config-clang-native-cpp-20
-        cmake --build --preset build-clang-native-cpp-20-debugcov
+        cmake --build --preset build-clang-native-cpp-20-debugcov --target cov_all
         cmake -DNUNAVUT_EXTRA_GENERATOR_ARGS="--enable-override-variable-array-capacity;--embed-auditing-info" --preset config-clang-native-c-11
-        cmake --build --preset build-clang-native-c-11-debugcov
+        cmake --build --preset build-clang-native-c-11-debugcov --target cov_all
+    - name: upload-verification-coverage-reports
+      uses: actions/upload-artifact@v4
+      with:
+        name: verification-coverage-reports
+        path: verification/build/DebugCov/coverage/*
 
   language-verification-python:
     runs-on: ubuntu-latest
diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index fa0ff906..1d28a009 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -278,7 +278,15 @@ After configuring you can also use Ninja directly::
     ninja -t targets
 
 To obtain coverage information for the verification suite (not the Python code),
-build the `cov_all` target and inspect the output under the `coverage` directory.
+build the `cov_all` target and inspect the output under the `coverage` directory::
+
+    cmake --build --preset build-clang-native-c-11-debug --target cov_all
+
+.. warning::
+
+    When switching between gcc and clang you must do a full clean of your repo if you previously ran the coverage
+    build. For example ``git clean -xdf`` or clone a new repo in a different folder. Each compiler suite leaves
+    different byproducts that may interfere with the coverage tools in the other suite.
 
 While we strongly encourage you to use the cmake presets, the CMakeLists.txt for the verification suite is driven by
 three variables you can set in your environment or pass into cmake if using cmake directly:
diff --git a/verification/CMakePresets.json b/verification/CMakePresets.json
index b8192499..b8d26f50 100644
--- a/verification/CMakePresets.json
+++ b/verification/CMakePresets.json
@@ -272,337 +272,337 @@
     ],
     "buildPresets": [
         {
-            "name": "build-clang-native-c-11-debugasan",
+            "name": "build-clang-native-c-11-debug",
             "configurePreset": "config-clang-native-c-11",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cpp-14-debugasan",
+            "name": "build-clang-native-cpp-14-debug",
             "configurePreset": "config-clang-native-cpp-14",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cetl-14-17-debugasan",
+            "name": "build-clang-native-cetl-14-17-debug",
             "configurePreset": "config-clang-native-cetl-14-17",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cpp-17-debugasan",
+            "name": "build-clang-native-cpp-17-debug",
             "configurePreset": "config-clang-native-cpp-17",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cpp-17-pmr-debugasan",
+            "name": "build-clang-native-cpp-17-pmr-debug",
             "configurePreset": "config-clang-native-cpp-17-pmr",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cpp-20-debugasan",
+            "name": "build-clang-native-cpp-20-debug",
             "configurePreset": "config-clang-native-cpp-20",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cpp-20-pmr-debugasan",
+            "name": "build-clang-native-cpp-20-pmr-debug",
             "configurePreset": "config-clang-native-cpp-20-pmr",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-c-11-debugasan",
+            "name": "build-gcc-native-c-11-debug",
             "configurePreset": "config-gcc-native-c-11",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cpp-14-debugasan",
+            "name": "build-gcc-native-cpp-14-debug",
             "configurePreset": "config-gcc-native-cpp-14",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cetl-14-17-debugasan",
+            "name": "build-gcc-native-cetl-14-17-debug",
             "configurePreset": "config-gcc-native-cetl-14-17",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cpp-17-debugasan",
+            "name": "build-gcc-native-cpp-17-debug",
             "configurePreset": "config-gcc-native-cpp-17",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cpp-17-pmr-debugasan",
+            "name": "build-gcc-native-cpp-17-pmr-debug",
             "configurePreset": "config-gcc-native-cpp-17-pmr",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cpp-20-debugasan",
+            "name": "build-gcc-native-cpp-20-debug",
             "configurePreset": "config-gcc-native-cpp-20",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cpp-20-pmr-debugasan",
+            "name": "build-gcc-native-cpp-20-pmr-debug",
             "configurePreset": "config-gcc-native-cpp-20-pmr",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-c-11-debugasan",
+            "name": "build-gcc-native32-c-11-debug",
             "configurePreset": "config-gcc-native32-c-11",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cpp-14-debugasan",
+            "name": "build-gcc-native32-cpp-14-debug",
             "configurePreset": "config-gcc-native32-cpp-14",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cetl-14-17-debugasan",
+            "name": "build-gcc-native32-cetl-14-17-debug",
             "configurePreset": "config-gcc-native32-cetl-14-17",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cpp-17-debugasan",
+            "name": "build-gcc-native32-cpp-17-debug",
             "configurePreset": "config-gcc-native32-cpp-17",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cpp-17-pmr-debugasan",
+            "name": "build-gcc-native32-cpp-17-pmr-debug",
             "configurePreset": "config-gcc-native32-cpp-17-pmr",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cpp-20-debugasan",
+            "name": "build-gcc-native32-cpp-20-debug",
             "configurePreset": "config-gcc-native32-cpp-20",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cpp-20-pmr-debugasan",
+            "name": "build-gcc-native32-cpp-20-pmr-debug",
             "configurePreset": "config-gcc-native32-cpp-20-pmr",
-            "configuration": "DebugAsan",
+            "configuration": "Debug",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-c-11-release",
+            "name": "build-clang-native-c-11-debugasan",
             "configurePreset": "config-clang-native-c-11",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cpp-14-release",
+            "name": "build-clang-native-cpp-14-debugasan",
             "configurePreset": "config-clang-native-cpp-14",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cetl-14-17-release",
+            "name": "build-clang-native-cetl-14-17-debugasan",
             "configurePreset": "config-clang-native-cetl-14-17",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cpp-17-release",
+            "name": "build-clang-native-cpp-17-debugasan",
             "configurePreset": "config-clang-native-cpp-17",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cpp-17-pmr-release",
+            "name": "build-clang-native-cpp-17-pmr-debugasan",
             "configurePreset": "config-clang-native-cpp-17-pmr",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cpp-20-release",
+            "name": "build-clang-native-cpp-20-debugasan",
             "configurePreset": "config-clang-native-cpp-20",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cpp-20-pmr-release",
+            "name": "build-clang-native-cpp-20-pmr-debugasan",
             "configurePreset": "config-clang-native-cpp-20-pmr",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-c-11-release",
+            "name": "build-gcc-native-c-11-debugasan",
             "configurePreset": "config-gcc-native-c-11",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cpp-14-release",
+            "name": "build-gcc-native-cpp-14-debugasan",
             "configurePreset": "config-gcc-native-cpp-14",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cetl-14-17-release",
+            "name": "build-gcc-native-cetl-14-17-debugasan",
             "configurePreset": "config-gcc-native-cetl-14-17",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cpp-17-release",
+            "name": "build-gcc-native-cpp-17-debugasan",
             "configurePreset": "config-gcc-native-cpp-17",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cpp-17-pmr-release",
+            "name": "build-gcc-native-cpp-17-pmr-debugasan",
             "configurePreset": "config-gcc-native-cpp-17-pmr",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cpp-20-release",
+            "name": "build-gcc-native-cpp-20-debugasan",
             "configurePreset": "config-gcc-native-cpp-20",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cpp-20-pmr-release",
+            "name": "build-gcc-native-cpp-20-pmr-debugasan",
             "configurePreset": "config-gcc-native-cpp-20-pmr",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-c-11-release",
+            "name": "build-gcc-native32-c-11-debugasan",
             "configurePreset": "config-gcc-native32-c-11",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cpp-14-release",
+            "name": "build-gcc-native32-cpp-14-debugasan",
             "configurePreset": "config-gcc-native32-cpp-14",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cetl-14-17-release",
+            "name": "build-gcc-native32-cetl-14-17-debugasan",
             "configurePreset": "config-gcc-native32-cetl-14-17",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cpp-17-release",
+            "name": "build-gcc-native32-cpp-17-debugasan",
             "configurePreset": "config-gcc-native32-cpp-17",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cpp-17-pmr-release",
+            "name": "build-gcc-native32-cpp-17-pmr-debugasan",
             "configurePreset": "config-gcc-native32-cpp-17-pmr",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cpp-20-release",
+            "name": "build-gcc-native32-cpp-20-debugasan",
             "configurePreset": "config-gcc-native32-cpp-20",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cpp-20-pmr-release",
+            "name": "build-gcc-native32-cpp-20-pmr-debugasan",
             "configurePreset": "config-gcc-native32-cpp-20-pmr",
-            "configuration": "Release",
+            "configuration": "DebugAsan",
             "targets": [
                 "test_all"
             ]
@@ -776,169 +776,169 @@
             ]
         },
         {
-            "name": "build-clang-native-c-11-debug",
+            "name": "build-clang-native-c-11-release",
             "configurePreset": "config-clang-native-c-11",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cpp-14-debug",
+            "name": "build-clang-native-cpp-14-release",
             "configurePreset": "config-clang-native-cpp-14",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cetl-14-17-debug",
+            "name": "build-clang-native-cetl-14-17-release",
             "configurePreset": "config-clang-native-cetl-14-17",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cpp-17-debug",
+            "name": "build-clang-native-cpp-17-release",
             "configurePreset": "config-clang-native-cpp-17",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cpp-17-pmr-debug",
+            "name": "build-clang-native-cpp-17-pmr-release",
             "configurePreset": "config-clang-native-cpp-17-pmr",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cpp-20-debug",
+            "name": "build-clang-native-cpp-20-release",
             "configurePreset": "config-clang-native-cpp-20",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-clang-native-cpp-20-pmr-debug",
+            "name": "build-clang-native-cpp-20-pmr-release",
             "configurePreset": "config-clang-native-cpp-20-pmr",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-c-11-debug",
+            "name": "build-gcc-native-c-11-release",
             "configurePreset": "config-gcc-native-c-11",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cpp-14-debug",
+            "name": "build-gcc-native-cpp-14-release",
             "configurePreset": "config-gcc-native-cpp-14",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cetl-14-17-debug",
+            "name": "build-gcc-native-cetl-14-17-release",
             "configurePreset": "config-gcc-native-cetl-14-17",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cpp-17-debug",
+            "name": "build-gcc-native-cpp-17-release",
             "configurePreset": "config-gcc-native-cpp-17",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cpp-17-pmr-debug",
+            "name": "build-gcc-native-cpp-17-pmr-release",
             "configurePreset": "config-gcc-native-cpp-17-pmr",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cpp-20-debug",
+            "name": "build-gcc-native-cpp-20-release",
             "configurePreset": "config-gcc-native-cpp-20",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native-cpp-20-pmr-debug",
+            "name": "build-gcc-native-cpp-20-pmr-release",
             "configurePreset": "config-gcc-native-cpp-20-pmr",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-c-11-debug",
+            "name": "build-gcc-native32-c-11-release",
             "configurePreset": "config-gcc-native32-c-11",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cpp-14-debug",
+            "name": "build-gcc-native32-cpp-14-release",
             "configurePreset": "config-gcc-native32-cpp-14",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cetl-14-17-debug",
+            "name": "build-gcc-native32-cetl-14-17-release",
             "configurePreset": "config-gcc-native32-cetl-14-17",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cpp-17-debug",
+            "name": "build-gcc-native32-cpp-17-release",
             "configurePreset": "config-gcc-native32-cpp-17",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cpp-17-pmr-debug",
+            "name": "build-gcc-native32-cpp-17-pmr-release",
             "configurePreset": "config-gcc-native32-cpp-17-pmr",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cpp-20-debug",
+            "name": "build-gcc-native32-cpp-20-release",
             "configurePreset": "config-gcc-native32-cpp-20",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
         },
         {
-            "name": "build-gcc-native32-cpp-20-pmr-debug",
+            "name": "build-gcc-native32-cpp-20-pmr-release",
             "configurePreset": "config-gcc-native32-cpp-20-pmr",
-            "configuration": "Debug",
+            "configuration": "Release",
             "targets": [
                 "test_all"
             ]
diff --git a/verification/cmake/compiler_flag_sets/common.cmake b/verification/cmake/compiler_flag_sets/common.cmake
index d60ac361..ea2071f3 100644
--- a/verification/cmake/compiler_flag_sets/common.cmake
+++ b/verification/cmake/compiler_flag_sets/common.cmake
@@ -95,12 +95,12 @@ add_compile_options("$<$<COMPILE_LANGUAGE:ASM>:${ASM_FLAG_SET}>")
 add_compile_options("$<$<C_COMPILER_ID:GNU>:-Wno-stringop-overflow>")
 add_compile_options("$<$<CONFIG:DebugAsan>:${LOCAL_SANITIZER_OPTIONS}>")
 add_compile_options(
-    "$<$<AND:$<CONFIG:DebugCov>,$<COMPILE_LANG_AND_ID:CXX,GNU>>:--coverage>"
+    "$<$<AND:$<CONFIG:DebugCov>,$<C_COMPILER_ID:GNU>>:--coverage>"
     "$<$<AND:$<CONFIG:DebugCov>,$<COMPILE_LANG_AND_ID:CXX,AppleClang,Clang>>:-fno-elide-constructors>"
-    "$<$<AND:$<CONFIG:DebugCov>,$<COMPILE_LANG_AND_ID:CXX,AppleClang,Clang>>:-fprofile-instr-generate>"
-    "$<$<AND:$<CONFIG:DebugCov>,$<COMPILE_LANG_AND_ID:CXX,AppleClang,Clang>>:-ftest-coverage>"
-    "$<$<AND:$<CONFIG:DebugCov>,$<COMPILE_LANG_AND_ID:CXX,AppleClang,Clang>>:-fprofile-arcs>"
-    "$<$<AND:$<CONFIG:DebugCov>,$<COMPILE_LANG_AND_ID:CXX,AppleClang,Clang>>:-fcoverage-mapping>"
+    "$<$<AND:$<CONFIG:DebugCov>,$<C_COMPILER_ID:AppleClang,Clang>>:-fprofile-instr-generate>"
+    "$<$<AND:$<CONFIG:DebugCov>,$<C_COMPILER_ID:AppleClang,Clang>>:-ftest-coverage>"
+    "$<$<AND:$<CONFIG:DebugCov>,$<C_COMPILER_ID:AppleClang,Clang>>:-fprofile-arcs>"
+    "$<$<AND:$<CONFIG:DebugCov>,$<C_COMPILER_ID:AppleClang,Clang>>:-fcoverage-mapping>"
 )
 add_link_options(${EXE_LINKER_FLAG_SET})
 add_link_options("$<$<CONFIG:DebugAsan>:${LOCAL_SANITIZER_OPTIONS}>")
diff --git a/verification/cmake/toolchains/clang-native.cmake b/verification/cmake/toolchains/clang-native.cmake
index 4fb9aa36..f6e704b7 100644
--- a/verification/cmake/toolchains/clang-native.cmake
+++ b/verification/cmake/toolchains/clang-native.cmake
@@ -8,8 +8,4 @@ set(CMAKE_C_COMPILER clang CACHE FILEPATH "C compiler")
 set(CMAKE_CXX_COMPILER clang++ CACHE FILEPATH "C++ compiler")
 set(CMAKE_ASM_COMPILER clang CACHE FILEPATH "assembler")
 
-# Signal to unit tests that the coverage data will be generated by
-# clang so they should try to use llvm-cov if it's available.
-# Things are weird between gcov and llvm-cov right now but this
-# seems to work in our Ubuntu 18 Docker container, so...?
 set(NUNAVUT_USE_LLVM_COV ON CACHE BOOL "Enable gcov compatibility with lcov coverage tools.")
diff --git a/verification/cmake/toolchains/gcc-native.cmake b/verification/cmake/toolchains/gcc-native.cmake
index 03d7bd02..10293003 100644
--- a/verification/cmake/toolchains/gcc-native.cmake
+++ b/verification/cmake/toolchains/gcc-native.cmake
@@ -6,3 +6,5 @@
 set(CMAKE_C_COMPILER gcc CACHE FILEPATH "C compiler")
 set(CMAKE_CXX_COMPILER g++ CACHE FILEPATH "C++ compiler")
 set(CMAKE_ASM_COMPILER gcc CACHE FILEPATH "assembler")
+
+set(NUNAVUT_USE_LLVM_COV OFF CACHE BOOL "Enable gcov compatibility with lcov coverage tools.")
diff --git a/verification/preset_generator.py b/verification/preset_generator.py
index 3da851ef..b09fdd12 100755
--- a/verification/preset_generator.py
+++ b/verification/preset_generator.py
@@ -214,7 +214,7 @@ def find_configuration_types(args: argparse.Namespace, hidden_presets: list[dict
             "No CMAKE_CONFIGURATION_TYPES found in common configurations and CMAKE_DEFAULT_BUILD_TYPE is not set."
         )
 
-    return list(configuration_types) if configuration_types else list(default_build_types)
+    return sorted(configuration_types) if configuration_types else sorted(default_build_types)
 
 
 def update_hidden_configure_presets(args: argparse.Namespace, configure_presets: dict) -> list[dict]:
@@ -316,7 +316,7 @@ def main() -> int:
     if not validate_json_schema(args, json_presets):
         return 1
 
-    if args.clean >= 1:
+    if args.clean is not None and args.clean >= 1:
         # clean level 1 deletes all existing buildPresets
         json_presets["buildPresets"] = []