IWYU: Add `--driver-mode=cl` when applicable

We already do this for `clang-tidy`.

Fixes: #16554

8 files changed, 8 insertions, 0 deletions

diff --git a/Modules/Compiler/Clang-C.cmake b/Modules/Compiler/Clang-C.cmake
index cf493d7..1b765ad 100644
--- a/Modules/Compiler/Clang-C.cmake
+++ b/Modules/Compiler/Clang-C.cmake
@@ -9,6 +9,7 @@ endif()
 if("x${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "xMSVC")
   set(CMAKE_C_COMPILE_OPTIONS_EXPLICIT_LANGUAGE -TC)
   set(CMAKE_C_CLANG_TIDY_DRIVER_MODE "cl")
+  set(CMAKE_C_INCLUDE_WHAT_YOU_USE_DRIVER_MODE "cl")
   if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
       AND CMAKE_GENERATOR MATCHES "Makefiles|WMake"
       AND CMAKE_DEPFILE_FLAGS_C)
diff --git a/Modules/Compiler/Clang-CXX.cmake b/Modules/Compiler/Clang-CXX.cmake
index 98828e0..84b05d7 100644
--- a/Modules/Compiler/Clang-CXX.cmake
+++ b/Modules/Compiler/Clang-CXX.cmake
@@ -22,6 +22,7 @@ endif()
 
 if("x${CMAKE_CXX_COMPILER_FRONTEND_VARIANT}" STREQUAL "xMSVC")
   set(CMAKE_CXX_CLANG_TIDY_DRIVER_MODE "cl")
+  set(CMAKE_CXX_INCLUDE_WHAT_YOU_USE_DRIVER_MODE "cl")
   if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
       AND CMAKE_GENERATOR MATCHES "Makefiles"
       AND CMAKE_DEPFILE_FLAGS_CXX)
diff --git a/Modules/Compiler/Intel-C.cmake b/Modules/Compiler/Intel-C.cmake
index ead9069..9884b58 100644
--- a/Modules/Compiler/Intel-C.cmake
+++ b/Modules/Compiler/Intel-C.cmake
@@ -17,6 +17,7 @@ if("x${CMAKE_C_SIMULATE_ID}" STREQUAL "xMSVC")
 
   set(CMAKE_C_COMPILE_OPTIONS_EXPLICIT_LANGUAGE -TC)
   set(CMAKE_C_CLANG_TIDY_DRIVER_MODE "cl")
+  set(CMAKE_C_INCLUDE_WHAT_YOU_USE_DRIVER_MODE "cl")
 
   if (NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 16.0.0)
     set(CMAKE_C11_STANDARD_COMPILE_OPTION "-Qstd=c11")
diff --git a/Modules/Compiler/Intel-CXX.cmake b/Modules/Compiler/Intel-CXX.cmake
index 37f339a..7c9cca9 100644
--- a/Modules/Compiler/Intel-CXX.cmake
+++ b/Modules/Compiler/Intel-CXX.cmake
@@ -16,6 +16,7 @@ endif()
 if("x${CMAKE_CXX_SIMULATE_ID}" STREQUAL "xMSVC")
 
   set(CMAKE_CXX_CLANG_TIDY_DRIVER_MODE "cl")
+  set(CMAKE_CXX_INCLUDE_WHAT_YOU_USE_DRIVER_MODE "cl")
 
   if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.0.0)
     set(CMAKE_CXX20_STANDARD_COMPILE_OPTION "-Qstd=c++20")
diff --git a/Modules/Compiler/IntelLLVM-C.cmake b/Modules/Compiler/IntelLLVM-C.cmake
index d69d064..d7346f6 100644
--- a/Modules/Compiler/IntelLLVM-C.cmake
+++ b/Modules/Compiler/IntelLLVM-C.cmake
@@ -4,6 +4,7 @@ __compiler_intel_llvm(C)
 if("x${CMAKE_C_COMPILER_FRONTEND_VARIANT}" STREQUAL "xMSVC")
   set(CMAKE_C_COMPILE_OPTIONS_EXPLICIT_LANGUAGE -TC)
   set(CMAKE_C_CLANG_TIDY_DRIVER_MODE "cl")
+  set(CMAKE_C_INCLUDE_WHAT_YOU_USE_DRIVER_MODE "cl")
   if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
       AND CMAKE_GENERATOR MATCHES "Makefiles|WMake"
       AND CMAKE_DEPFILE_FLAGS_C)
diff --git a/Modules/Compiler/IntelLLVM-CXX.cmake b/Modules/Compiler/IntelLLVM-CXX.cmake
index 9799888..cae1f11 100644
--- a/Modules/Compiler/IntelLLVM-CXX.cmake
+++ b/Modules/Compiler/IntelLLVM-CXX.cmake
@@ -4,6 +4,7 @@ __compiler_intel_llvm(CXX)
 if("x${CMAKE_CXX_COMPILER_FRONTEND_VARIANT}" STREQUAL "xMSVC")
   set(CMAKE_CXX_COMPILE_OPTIONS_EXPLICIT_LANGUAGE -TP)
   set(CMAKE_CXX_CLANG_TIDY_DRIVER_MODE "cl")
+  set(CMAKE_CXX_INCLUDE_WHAT_YOU_USE_DRIVER_MODE "cl")
   if((NOT DEFINED CMAKE_DEPENDS_USE_COMPILER OR CMAKE_DEPENDS_USE_COMPILER)
       AND CMAKE_GENERATOR MATCHES "Makefiles|WMake"
       AND CMAKE_DEPFILE_FLAGS_CXX)
diff --git a/Modules/Compiler/MSVC-C.cmake b/Modules/Compiler/MSVC-C.cmake
index 73cca36..4ba1eea 100644
--- a/Modules/Compiler/MSVC-C.cmake
+++ b/Modules/Compiler/MSVC-C.cmake
@@ -29,6 +29,7 @@ endif()
 
 set(CMAKE_C_COMPILE_OPTIONS_EXPLICIT_LANGUAGE -TC)
 set(CMAKE_C_CLANG_TIDY_DRIVER_MODE "cl")
+set(CMAKE_C_INCLUDE_WHAT_YOU_USE_DRIVER_MODE "cl")
 
 # There are no C compiler modes so we hard-code the known compiler supported
 # features. Override the default macro for this special case.  Pretend that
diff --git a/Modules/Compiler/MSVC-CXX.cmake b/Modules/Compiler/MSVC-CXX.cmake
index 09fe851..9bb7722 100644
--- a/Modules/Compiler/MSVC-CXX.cmake
+++ b/Modules/Compiler/MSVC-CXX.cmake
@@ -4,6 +4,7 @@
 include(Compiler/CMakeCommonCompilerMacros)
 
 set(CMAKE_CXX_CLANG_TIDY_DRIVER_MODE "cl")
+set(CMAKE_CXX_INCLUDE_WHAT_YOU_USE_DRIVER_MODE "cl")
 
 if ((CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL 19.0.24215.1 AND
      CMAKE_CXX_COMPILER_VERSION VERSION_LESS 19.10) OR