From 81388eedaabbfd4eead5e4542852a648118679f0 Mon Sep 17 00:00:00 2001
From: Dan Church <amphetamachine@gmail.com>
Date: Tue, 11 Oct 2022 13:44:04 -0500
Subject: [PATCH] Use GNUInstallDirs for installation paths

---
 CMakeLists.txt                          | 9 ++++-----
 Source/Core/DolphinNoGUI/CMakeLists.txt | 2 +-
 Source/Core/DolphinQt/CMakeLists.txt    | 2 +-
 Source/Core/DolphinTool/CMakeLists.txt  | 2 +-
 Source/DSPTool/CMakeLists.txt           | 2 +-
 5 files changed, 8 insertions(+), 9 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0dc09a3bb6..95c1289bfe 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -128,15 +128,14 @@ include(CheckVendoringApproved)
 include(DolphinCompileDefinitions)
 include(DolphinDisableWarningsMSVC)
 include(DolphinLibraryTools)
+include(GNUInstallDirs)
 include(RemoveCompileFlag)
 
 # Enable folders for IDE
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 
 # Set up paths
-set(bindir  ${CMAKE_INSTALL_PREFIX}/bin               CACHE PATH "bindir")
-set(datadir ${CMAKE_INSTALL_PREFIX}/share/dolphin-emu CACHE PATH "datadir")
-set(mandir  ${CMAKE_INSTALL_PREFIX}/share/man         CACHE PATH "mandir")
+set(datadir ${CMAKE_INSTALL_FULL_DATADIR}/dolphin-emu CACHE PATH "datadir")
 add_definitions(-DDATA_DIR="${datadir}/")
 
 if(CMAKE_SYSROOT)
@@ -1016,9 +1015,9 @@ if(CMAKE_SYSTEM_NAME MATCHES "Linux|FreeBSD|OpenBSD")
           DESTINATION ${CMAKE_INSTALL_PREFIX}/share/applications)
   # Install manpages
   install(FILES Data/dolphin-emu.6
-          DESTINATION ${mandir}/man6)
+          DESTINATION ${CMAKE_INSTALL_MANDIR}/man6)
   install(FILES Data/dolphin-emu-nogui.6
-          DESTINATION ${mandir}/man6)
+          DESTINATION ${CMAKE_INSTALL_MANDIR}/man6)
 endif()
 
 # packaging information
diff --git a/Source/Core/DolphinNoGUI/CMakeLists.txt b/Source/Core/DolphinNoGUI/CMakeLists.txt
index f21955d809..202a612b5d 100644
--- a/Source/Core/DolphinNoGUI/CMakeLists.txt
+++ b/Source/Core/DolphinNoGUI/CMakeLists.txt
@@ -36,5 +36,5 @@ if(USE_DISCORD_PRESENCE)
 endif()
 
 set(CPACK_PACKAGE_EXECUTABLES ${CPACK_PACKAGE_EXECUTABLES} dolphin-nogui)
-install(TARGETS dolphin-nogui RUNTIME DESTINATION ${bindir})
+install(TARGETS dolphin-nogui RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
 
diff --git a/Source/Core/DolphinQt/CMakeLists.txt b/Source/Core/DolphinQt/CMakeLists.txt
index a9e07afe0b..25958e4e4e 100644
--- a/Source/Core/DolphinQt/CMakeLists.txt
+++ b/Source/Core/DolphinQt/CMakeLists.txt
@@ -626,7 +626,7 @@ if(APPLE)
       /usr/bin/codesign -f -s "${MACOS_CODE_SIGNING_IDENTITY}" --deep --options=runtime --entitlements "${CMAKE_SOURCE_DIR}/Source/Core/DolphinQt/DolphinEmu.entitlements" "${CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE}/Dolphin.app" || true)
   endif()
 else()
-  install(TARGETS dolphin-emu RUNTIME DESTINATION ${bindir})
+  install(TARGETS dolphin-emu RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
 endif()
 
 if (CMAKE_SYSTEM_NAME STREQUAL "Linux" AND STEAM)
diff --git a/Source/Core/DolphinTool/CMakeLists.txt b/Source/Core/DolphinTool/CMakeLists.txt
index 5e545225ec..fdca81a148 100644
--- a/Source/Core/DolphinTool/CMakeLists.txt
+++ b/Source/Core/DolphinTool/CMakeLists.txt
@@ -25,4 +25,4 @@ if(MSVC)
 endif()
 
 set(CPACK_PACKAGE_EXECUTABLES ${CPACK_PACKAGE_EXECUTABLES} dolphin-tool)
-install(TARGETS dolphin-tool RUNTIME DESTINATION ${bindir})
+install(TARGETS dolphin-tool RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
diff --git a/Source/DSPTool/CMakeLists.txt b/Source/DSPTool/CMakeLists.txt
index 56fbee9e01..7656bc8ce6 100644
--- a/Source/DSPTool/CMakeLists.txt
+++ b/Source/DSPTool/CMakeLists.txt
@@ -1,5 +1,5 @@
 add_executable(dsptool DSPTool.cpp StubHost.cpp)
 target_link_libraries(dsptool core)
 if(NOT APPLE)
-  install(TARGETS dsptool RUNTIME DESTINATION ${bindir})
+  install(TARGETS dsptool RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
 endif()