[cmake] USE_CCACHE option to root and fix debug usage

* ccache on cmake based off SDL2
* remove debug info (/Zi) on Release build and use only on Debug builds
* change to Z7 on Debug WHEN using CCACHE

Signed-off-by: Caio Oliveira <caiooliveirafarias0@gmail.com>

CMakeLists.txt

@@ -180,6 +180,7 @@ CMAKE_DEPENDENT_OPTION(USE_DISCORD_PRESENCE "Enables Discord Rich Presence" OFF
 option(YUZU_TESTS "Compile tests" "${BUILD_TESTING}")
 
 option(YUZU_USE_PRECOMPILED_HEADERS "Use precompiled headers" ${EXT_DEFAULT})
+set(DYNARMIC_USE_PRECOMPILED_HEADERS YUZU_USE_PRECOMPILED_HEADERS)
 
 # TODO(crueter): CI this?
 option(YUZU_DOWNLOAD_ANDROID_VVL "Download validation layer binary for android" ON)
@@ -253,13 +254,25 @@ if (ANDROID)
     set(CMAKE_POLICY_VERSION_MINIMUM 3.5) # Workaround for Oboe
 endif()
 
-if (YUZU_USE_PRECOMPILED_HEADERS)
-    if (MSVC AND CCACHE)
-        # buildcache does not properly cache PCH files, leading to compilation errors.
-        # See https://github.com/mbitsnbites/buildcache/discussions/230
-        message(WARNING "buildcache does not properly support Precompiled Headers. Disabling PCH")
-        set(DYNARMIC_USE_PRECOMPILED_HEADERS OFF CACHE BOOL "" FORCE)
-        set(YUZU_USE_PRECOMPILED_HEADERS OFF CACHE BOOL "" FORCE)
+# Add option to enable CCache
+option(USE_CCACHE "Use ccache for compilation" OFF)
+set(CCACHE_PATH "ccache" CACHE STRING "Path to ccache binary")
+if(USE_CCACHE)
+    find_program(CCACHE_BINARY ${CCACHE_PATH})
+    if(CCACHE_BINARY)
+        message(STATUS "Found ccache at: ${CCACHE_BINARY}")
+        set(CMAKE_C_COMPILER_LAUNCHER ${CCACHE_BINARY})
+        set(CMAKE_CXX_COMPILER_LAUNCHER ${CCACHE_BINARY})
+        set(CMAKE_OBJC_COMPILER_LAUNCHER ${CCACHE_BINARY})
+        if(WIN32)
+            message(WARNING "USE_CCACHE is unstable under Windows, errors may occur...")
+            # we need to downgrade debug info (/Zi -> /Z7) to use an older but more cacheable format
+            # See https://github.com/nanoant/CMakePCHCompiler/issues/21
+            string(REPLACE "/Zi" "/Z7" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")
+            string(REPLACE "/Zi" "/Z7" CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")
+        endif()
+    else()
+        message(WARNING "USE_CCACHE enabled, but no executable found at: ${CCACHE_PATH}")
     endif()
 endif()
 

CMakeModules/MSVCCache.cmake

@@ -1,15 +0,0 @@
-# SPDX-FileCopyrightText: 2022 yuzu Emulator Project
-# SPDX-License-Identifier: GPL-3.0-or-later
-
-# buildcache wrapper
-OPTION(USE_CCACHE "Use buildcache for compilation" OFF)
-IF(USE_CCACHE)
-    FIND_PROGRAM(CCACHE buildcache)
-    IF (CCACHE)
-        MESSAGE(STATUS "Using buildcache found in PATH")
-        SET_PROPERTY(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ${CCACHE})
-        SET_PROPERTY(GLOBAL PROPERTY RULE_LAUNCH_LINK ${CCACHE})
-    ELSE(CCACHE)
-        MESSAGE(WARNING "USE_CCACHE enabled, but no buildcache executable found")
-    ENDIF(CCACHE)
-ENDIF(USE_CCACHE)

CMakeModules/MinGWClangCross.cmake

@@ -1,13 +1,14 @@
 # SPDX-FileCopyrightText: 2022 yuzu Emulator Project
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-set(MINGW_PREFIX                /usr/x86_64-w64-mingw32/)
-set(CMAKE_SYSTEM_NAME           Windows)
 set(CMAKE_SYSTEM_PROCESSOR      x86_64)
+set(MINGW_FULL_PREFIX           ${CMAKE_SYSTEM_PROCESSOR}-w64-mingw32)
+set(MINGW_PREFIX                /usr/${MINGW_FULL_PREFIX}/)
+set(CMAKE_SYSTEM_NAME           Windows)
 
 set(CMAKE_FIND_ROOT_PATH        ${MINGW_PREFIX})
 set(SDL2_PATH                   ${MINGW_PREFIX})
-set(MINGW_TOOL_PREFIX           ${CMAKE_SYSTEM_PROCESSOR}-w64-mingw32-)
+set(MINGW_TOOL_PREFIX           ${MINGW_FULL_PREFIX}-)
 
 # Specify the cross compiler
 set(CMAKE_C_COMPILER            ${MINGW_TOOL_PREFIX}clang)
@@ -23,23 +24,9 @@ set(STRIP                       ${MINGW_TOOL_PREFIX}strip)
 set(WINDRES                     ${MINGW_TOOL_PREFIX}windres)
 set(ENV{PKG_CONFIG}             ${MINGW_TOOL_PREFIX}pkg-config)
 
-# ccache wrapper
-option(USE_CCACHE "Use ccache for compilation" OFF)
-if(USE_CCACHE)
-    find_program(CCACHE ccache)
-    if(CCACHE)
-        message(STATUS "Using ccache found in PATH")
-        set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ${CCACHE})
-        set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK ${CCACHE})
-    else(CCACHE)
-        message(WARNING "USE_CCACHE enabled, but no ccache found")
-    endif(CCACHE)
-endif(USE_CCACHE)
-
 # Search for programs in the build host directories
 set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
 
-
 # Echo modified cmake vars to screen for debugging purposes
 if(NOT DEFINED ENV{MINGW_DEBUG_INFO})
         message("")

CMakeModules/MinGWCross.cmake

@@ -1,16 +1,20 @@
+# SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+# SPDX-License-Identifier: GPL-3.0-or-later
+
 # SPDX-FileCopyrightText: 2018 tech4me <guiwanglong@gmail.com>
 # SPDX-License-Identifier: GPL-2.0-or-later
 
-set(MINGW_PREFIX   /usr/x86_64-w64-mingw32/)
-set(CMAKE_SYSTEM_NAME               Windows)
-set(CMAKE_SYSTEM_PROCESSOR           x86_64)
 # Actually a hack, w/o this will cause some strange errors
 set(CMAKE_HOST_WIN32            TRUE)
 
+set(CMAKE_SYSTEM_PROCESSOR      x86_64)
+set(MINGW_FULL_PREFIX           ${CMAKE_SYSTEM_PROCESSOR}-w64-mingw32)
+set(MINGW_PREFIX                /usr/${MINGW_FULL_PREFIX}/)
+set(CMAKE_SYSTEM_NAME           Windows)
 
 set(CMAKE_FIND_ROOT_PATH        ${MINGW_PREFIX})
 set(SDL2_PATH                   ${MINGW_PREFIX})
-set(MINGW_TOOL_PREFIX               ${CMAKE_SYSTEM_PROCESSOR}-w64-mingw32-)
+set(MINGW_TOOL_PREFIX           ${MINGW_FULL_PREFIX}-)
 
 # Specify the cross compiler
 set(CMAKE_C_COMPILER            ${MINGW_TOOL_PREFIX}gcc)
@@ -22,23 +26,9 @@ set(STRIP                       ${MINGW_TOOL_PREFIX}strip)
 set(WINDRES                     ${MINGW_TOOL_PREFIX}windres)
 set(ENV{PKG_CONFIG}             ${MINGW_TOOL_PREFIX}pkg-config)
 
-# ccache wrapper
-option(USE_CCACHE "Use ccache for compilation" OFF)
-if(USE_CCACHE)
-    find_program(CCACHE ccache)
-    if(CCACHE)
-        message(STATUS "Using ccache found in PATH")
-        set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ${CCACHE})
-        set_property(GLOBAL PROPERTY RULE_LAUNCH_LINK ${CCACHE})
-    else(CCACHE)
-        message(WARNING "USE_CCACHE enabled, but no ccache found")
-    endif(CCACHE)
-endif(USE_CCACHE)
-
 # Search for programs in the build host directories
 set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
 
-
 # Echo modified cmake vars to screen for debugging purposes
 if(NOT DEFINED ENV{MINGW_DEBUG_INFO})
         message("")

externals/CMakeLists.txt

@@ -77,12 +77,21 @@ endif()
 # Sirit
 AddJsonPackage(sirit)
 
-if(MSVC AND USE_CCACHE AND sirit_ADDED)
-    get_target_property(_opts sirit COMPILE_OPTIONS)
-    list(FILTER _opts EXCLUDE REGEX "/Zi")
-    list(APPEND _opts "/Z7")
-    set_target_properties(sirit PROPERTIES COMPILE_OPTIONS "${_opts}")
-elseif(MSVC AND CXX_CLANG)
+if(WIN32)
+    get_target_property(sirit_opts sirit COMPILE_OPTIONS)
+    # Remove Debug Info on ALL Release Builds
+    if(CMAKE_BUILD_TYPE STREQUAL "Release" OR CMAKE_BUILD_TYPE STREQUAL "MinSizeRel")
+        list(FILTER sirit_opts EXCLUDE REGEX "/Zi")
+    endif()
+    # Change to old-but-more-cacheable debug info WHEN using ccache
+    if(CCACHE_BINARY AND (CMAKE_BUILD_TYPE STREQUAL "Debug" OR CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo"))
+        list(FILTER sirit_opts EXCLUDE REGEX "/Zi")
+        list(APPEND sirit_opts "/Z7")
+    endif()
+    set_target_properties(sirit PROPERTIES COMPILE_OPTIONS "${sirit_opts}")
+endif()
+
+if(MSVC AND CXX_CLANG)
     target_compile_options(sirit PRIVATE -Wno-error=unused-command-line-argument)
 endif()
 

src/CMakeLists.txt

@@ -101,17 +101,6 @@ if (MSVC AND NOT CXX_CLANG)
         )
     endif()
 
-    if (USE_CCACHE OR YUZU_USE_PRECOMPILED_HEADERS)
-        # when caching, we need to use /Z7 to downgrade debug info to use an older but more cacheable format
-        # Precompiled headers are deleted if not using /Z7. See https://github.com/nanoant/CMakePCHCompiler/issues/21
-        add_compile_options(/Z7)
-        # Avoid D9025 warning
-        string(REPLACE "/Zi" "" CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")
-        string(REPLACE "/Zi" "" CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG}")
-    else()
-        add_compile_options(/Zi)
-    endif()
-
     if (ARCHITECTURE_x86_64)
         add_compile_options(/QIntel-jcc-erratum)
     endif()