CMake: Added PACKAGE_MODE option

Set paths, add check in SetResourcesDir

.gitignore

@@ -119,3 +119,4 @@ oprofile_data/
 CMakeSettings.json
 /ci-artifacts/
 /out/
+/.cache/

cmake/BuildParameters.cmake

@@ -1,6 +1,8 @@
 # Extra preprocessor definitions that will be added to all pcsx2 builds
 set(PCSX2_DEFS "")
 
+include(GNUInstallDirs)
+
 #-------------------------------------------------------------------------------
 # Misc option
 #-------------------------------------------------------------------------------
@@ -8,6 +10,7 @@ option(ENABLE_TESTS "Enables building the unit tests" ON)
 option(ENABLE_GSRUNNER "Enables building the GSRunner" OFF)
 option(LTO_PCSX2_CORE "Enable LTO/IPO/LTCG on the subset of pcsx2 that benefits most from it but not anything else")
 option(USE_VTUNE "Plug VTUNE to profile GS JIT.")
+option(PACKAGE_MODE "Use this option to ease packaging of PCSX2 (developer/distribution option)")
 
 #-------------------------------------------------------------------------------
 # Graphical option
@@ -199,6 +202,15 @@ if(MSVC)
 	)
 endif()
 
+if(PACKAGE_MODE)
+	file(RELATIVE_PATH relative_datadir ${CMAKE_INSTALL_FULL_BINDIR} ${CMAKE_INSTALL_FULL_DATADIR}/PCSX2)
+
+	# Compile all source codes with those defines
+	list(APPEND PCSX2_DEFS
+		PCSX2_APP_DATADIR="${relative_datadir}")
+endif()
+
+
 if(USE_VTUNE)
 	list(APPEND PCSX2_DEFS ENABLE_VTUNE)
 endif()

pcsx2/CMakeLists.txt

@@ -1282,6 +1282,16 @@ function(setup_main_executable target)
 		install(CODE "file(WRITE \"${CMAKE_SOURCE_DIR}/bin/qt.conf\" \"[Paths]\\nPlugins = ./QtPlugins\")")
 	endif()
 
+
+	if (UNIX AND NOT APPLE)
+		if (PACKAGE_MODE)
+			install(TARGETS pcsx2-qt DESTINATION ${CMAKE_INSTALL_FULL_BINDIR})
+			install(DIRECTORY ${CMAKE_SOURCE_DIR}/bin/resources DESTINATION ${CMAKE_INSTALL_FULL_DATADIR}/PCSX2)
+		else()
+			install(TARGETS pcsx2-qt DESTINATION ${CMAKE_SOURCE_DIR}/bin)
+		endif()
+	endif()
+
 	if(APPLE)
 		if(CMAKE_GENERATOR MATCHES "Xcode")
 			# If we're generating an xcode project, you can just add the shaders to the main pcsx2 target and xcode will deal with them properly

pcsx2/Pcsx2Config.cpp

@@ -1871,8 +1871,12 @@ void EmuFolders::SetAppRoot()
 bool EmuFolders::SetResourcesDirectory()
 {
 #ifndef __APPLE__  
-	// On Windows/Linux, these are in the binary directory.
-	Resources = Path::Combine(AppRoot, "resources");
+	#ifndef PCSX2_APP_DATADIR
+		// On Windows/Linux, these are in the binary directory.
+		Resources = Path::Combine(AppRoot, "resources");
+	#else
+		Resources = Path::Canonicalize(Path::Combine(AppRoot, PCSX2_APP_DATADIR "/resources"));
+	#endif
 #else
 	// On macOS, this is in the bundle resources directory.
 	Resources = Path::Canonicalize(Path::Combine(AppRoot, "../Resources"));