Merge branch 'sea-cache' into 'master'

MSVC CCache support

See merge request OpenMW/openmw!3938

.gitlab-ci.yml

@@ -576,7 +576,7 @@ macOS14_Xcode15_arm64:
     - cd MSVC2019_64_Ninja
     - .\ActivateMSVC.ps1
     - cmake --build . --config $config
-    - ccache --show-stats
+    - ccache --show-stats -v
     - cd $config
     - echo "CI_COMMIT_REF_NAME ${CI_COMMIT_REF_NAME}`nCI_JOB_ID ${CI_JOB_ID}`nCI_COMMIT_SHA ${CI_COMMIT_SHA}" | Out-File -Encoding UTF8 CI-ID.txt
     - $artifactDirectory = "$(Make-SafeFileName("${CI_PROJECT_NAMESPACE}"))/$(Make-SafeFileName("${CI_COMMIT_REF_NAME}"))/$(Make-SafeFileName("${CI_COMMIT_SHORT_SHA}-${CI_JOB_ID}"))/"
@@ -666,7 +666,6 @@ macOS14_Xcode15_arm64:
   - choco source disable -n=chocolatey
   - choco install git --force --params "/GitAndUnixToolsOnPath" -y
   - choco install 7zip -y
-  - choco install ccache -y
   - choco install vswhere -y
   - choco install python -y
   - choco install awscli -y
@@ -689,15 +688,11 @@ macOS14_Xcode15_arm64:
     - $time = (Get-Date -Format "HH:mm:ss")
     - echo ${time}
     - echo "started by ${GITLAB_USER_NAME}"
-    - $env:CCACHE_BASEDIR = Get-Location
-    - $env:CCACHE_DIR = "$(Get-Location)\ccache"
-    - New-Item -Type Directory -Force -Path $env:CCACHE_DIR
     - New-Item -Type File -Force -Path MSVC2019_64\.cmake\api\v1\query\codemodel-v2
     - sh CI/before_script.msvc.sh -c $config -p Win64 -v 2019 -k -V -b -t -C $multiview -E
     - cd MSVC2019_64
     - Get-Volume
     - cmake --build . --config $config
-    - ccache --show-stats
     - cd $config
     - echo "CI_COMMIT_REF_NAME ${CI_COMMIT_REF_NAME}`nCI_JOB_ID ${CI_JOB_ID}`nCI_COMMIT_SHA ${CI_COMMIT_SHA}" | Out-File -Encoding UTF8 CI-ID.txt
     - $artifactDirectory = "$(Make-SafeFileName("${CI_PROJECT_NAMESPACE}"))/$(Make-SafeFileName("${CI_COMMIT_REF_NAME}"))/$(Make-SafeFileName("${CI_COMMIT_SHORT_SHA}-${CI_JOB_ID}"))/"
@@ -729,7 +724,6 @@ macOS14_Xcode15_arm64:
   cache:
     key: msbuild-v8
     paths:
-    - ccache
     - deps
     - MSVC2019_64/deps/Qt
   artifacts:

CI/before_script.msvc.sh

@@ -528,8 +528,12 @@ if ! [ -z $UNITY_BUILD ]; then
 	add_cmake_opts "-DOPENMW_UNITY_BUILD=True"
 fi
 
-if ! [ -z $USE_CCACHE ]; then
-	add_cmake_opts "-DCMAKE_C_COMPILER_LAUNCHER=ccache  -DCMAKE_CXX_COMPILER_LAUNCHER=ccache"
+if [ -n "$USE_CCACHE" ]; then
+	if [ -n "$NMAKE" ] || [ -n "$NINJA" ]; then
+		add_cmake_opts "-DCMAKE_C_COMPILER_LAUNCHER=ccache  -DCMAKE_CXX_COMPILER_LAUNCHER=ccache -DPRECOMPILE_HEADERS_WITH_MSVC=OFF"
+	else
+		echo "Ignoring -C (CCache) as it is incompatible with Visual Studio CMake generators"
+	fi
 fi
 
 # turn on LTO by default

CMakeLists.txt

@@ -191,6 +191,22 @@ if (MSVC)
     add_compile_options(/bigobj)
 
     add_compile_options(/Zc:__cplusplus)
+
+    if (CMAKE_CXX_COMPILER_LAUNCHER OR CMAKE_C_COMPILER_LAUNCHER)
+        if (CMAKE_GENERATOR MATCHES "Visual Studio")
+            message(STATUS "A compiler launcher was specified, but will be unused by the current generator (${CMAKE_GENERATOR})")
+        else()
+            foreach (config_lower ${CMAKE_CONFIGURATION_TYPES})
+                string(TOUPPER "${config_lower}" config)
+                if (CMAKE_C_COMPILER_LAUNCHER STREQUAL "ccache")
+                    string(REPLACE "/Zi" "/Z7" CMAKE_C_FLAGS_${config} "${CMAKE_C_FLAGS_${config}}")
+                endif()
+                if (CMAKE_CXX_COMPILER_LAUNCHER STREQUAL "ccache")
+                    string(REPLACE "/Zi" "/Z7" CMAKE_CXX_FLAGS_${config} "${CMAKE_CXX_FLAGS_${config}}")
+                endif()
+            endforeach()
+        endif()
+    endif()
 endif()
 
 # Set up common paths