build: Disable LTO when using MSVC. (#7003)

.github/workflows/build.yml

@@ -145,11 +145,6 @@ jobs:
           key: ${{ runner.os }}-${{ matrix.target }}-${{ github.sha }}
           restore-keys: |
             ${{ runner.os }}-${{ matrix.target }}-
-      - name: Increase Pagefile size
-        uses: al-cheb/configure-pagefile-action@v1.2
-        with:
-          minimum-size: 2GB
-          maximum-size: 6GB
       - name: Set up MSVC
         uses: ilammy/msvc-dev-cmd@v1
         if: ${{ matrix.target == 'msvc' }}

CMakeLists.txt

@@ -46,6 +46,13 @@ else()
     set(IS_RELEASE_BUILD ON)
 endif()
 
+# LTO takes too much memory and time using MSVC.
+if (NOT MSVC AND IS_RELEASE_BUILD)
+    set(DEFAULT_ENABLE_LTO ON)
+else()
+    set(DEFAULT_ENABLE_LTO OFF)
+endif()
+
 option(ENABLE_SDL2 "Enable using SDL2" ON)
 CMAKE_DEPENDENT_OPTION(ENABLE_SDL2_FRONTEND "Enable the SDL2 frontend" ON "ENABLE_SDL2;NOT ANDROID AND NOT IOS" OFF)
 option(USE_SYSTEM_SDL2 "Use the system SDL2 lib (instead of the bundled one)" OFF)
@@ -75,7 +82,7 @@ CMAKE_DEPENDENT_OPTION(CITRA_ENABLE_BUNDLE_TARGET "Enable the distribution bundl
 
 # Compile options
 CMAKE_DEPENDENT_OPTION(COMPILE_WITH_DWARF "Add DWARF debugging information" ${IS_DEBUG_BUILD} "MINGW" OFF)
-option(ENABLE_LTO "Enable link time optimization" ${IS_RELEASE_BUILD})
+option(ENABLE_LTO "Enable link time optimization" ${DEFAULT_ENABLE_LTO})
 option(CITRA_USE_PRECOMPILED_HEADERS "Use precompiled headers" ON)
 option(CITRA_WARNINGS_AS_ERRORS "Enable warnings as errors" ON)