diff --git a/.clang-tidy b/.clang-tidy
index 47a367d..82450d1 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -6,6 +6,7 @@
 # modernize-avoid-c-arrays trips up in TEMPLATE_TEST_CASE catch macro
 # modernize-return-braced-init-list triggers on lambdas ?
 # modernize-make-unique requires C++14
+# readability-avoid-const-params-in-decls Affected by the pre-compile split
 
 Checks: |
   *bugprone*,
@@ -39,7 +40,6 @@ Checks: |
   *performance*,
   -performance-unnecessary-value-param,
   -performance-inefficient-string-concatenation,
-  readability-avoid-const-params-in-decls,
   readability-const-return-type,
   readability-container-size-empty,
   readability-delete-null-pointer,
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 1fe3762..a0b9e6c 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -17,6 +17,7 @@ jobs:
     strategy:
       matrix:
         std: ["11", "14", "17", "20"]
+        precompile: ["ON", "OFF"]
     steps:
       - uses: actions/checkout@v3
 
@@ -33,6 +34,7 @@ jobs:
             -DCMAKE_CXX_STANDARD=${{matrix.std}} \
             -DCLI11_SINGLE_FILE_TESTS=OFF \
             -DCLI11_EXAMPLES=OFF \
+            -DCLI11_PRECOMPILED=${{matrix.precompile}} \
             -DCMAKE_BUILD_TYPE=Coverage
 
       - name: Build
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index fd891ba..7540a2e 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -16,6 +16,7 @@ variables:
   cli11.std: 14
   cli11.build_type: Debug
   cli11.options: -DCLI11_EXAMPLES_JSON=ON
+  cli11.precompile: OFF
   CMAKE_BUILD_PARALLEL_LEVEL: 4
 
 jobs:
@@ -33,15 +34,26 @@ jobs:
       matrix:
         Linux14:
           vmImage: "ubuntu-latest"
+        Linux14PC:
+          vmImage: "ubuntu-latest"
+          cli11.precompile: ON
         macOS17:
           vmImage: "macOS-latest"
           cli11.std: 17
         macOS11:
           vmImage: "macOS-latest"
           cli11.std: 11
+        macOS11PC:
+          vmImage: "macOS-latest"
+          cli11.std: 11
+          cli11.precompile: ON
         Windows17:
           vmImage: "windows-2019"
           cli11.std: 17
+        Windows17PC:
+          vmImage: "windows-2019"
+          cli11.std: 17
+          cli11.precompile: ON
         Windows11:
           vmImage: "windows-2019"
           cli11.std: 11