diff --git a/CMakeLists.txt b/CMakeLists.txt
index d8958bf9d..2f7b7632c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,21 +24,21 @@ option(USE_DISCORD_PRESENCE "Enables Discord Rich Presence" OFF)
 
 option(ENABLE_SCRIPTING "Enables scripting support" OFF)
 
-if(NOT EXISTS ${CMAKE_SOURCE_DIR}/.git/hooks/pre-commit)
+if(NOT EXISTS ${PROJECT_SOURCE_DIR}/.git/hooks/pre-commit)
     message(STATUS "Copying pre-commit hook")
     file(COPY hooks/pre-commit
-        DESTINATION ${CMAKE_SOURCE_DIR}/.git/hooks)
+        DESTINATION ${PROJECT_SOURCE_DIR}/.git/hooks)
 endif()
 
 # Sanity check : Check that all submodules are present
 # =======================================================================
 
 function(check_submodules_present)
-    file(READ "${CMAKE_SOURCE_DIR}/.gitmodules" gitmodules)
+    file(READ "${PROJECT_SOURCE_DIR}/.gitmodules" gitmodules)
     string(REGEX MATCHALL "path *= *[^ \t\r\n]*" gitmodules ${gitmodules})
     foreach(module ${gitmodules})
         string(REGEX REPLACE "path *= *" "" module ${module})
-        if (NOT EXISTS "${CMAKE_SOURCE_DIR}/${module}/.git")
+        if (NOT EXISTS "${PROJECT_SOURCE_DIR}/${module}/.git")
             message(SEND_ERROR "Git submodule ${module} not found."
                     "Please run: git submodule update --init --recursive")
         endif()
@@ -46,17 +46,17 @@ function(check_submodules_present)
 endfunction()
 check_submodules_present()
 
-configure_file(${CMAKE_SOURCE_DIR}/dist/compatibility_list/compatibility_list.qrc
-               ${CMAKE_BINARY_DIR}/dist/compatibility_list/compatibility_list.qrc
+configure_file(${PROJECT_SOURCE_DIR}/dist/compatibility_list/compatibility_list.qrc
+               ${PROJECT_BINARY_DIR}/dist/compatibility_list/compatibility_list.qrc
                COPYONLY)
-if (ENABLE_COMPATIBILITY_LIST_DOWNLOAD AND NOT EXISTS ${CMAKE_BINARY_DIR}/dist/compatibility_list/compatibility_list.json)
+if (ENABLE_COMPATIBILITY_LIST_DOWNLOAD AND NOT EXISTS ${PROJECT_BINARY_DIR}/dist/compatibility_list/compatibility_list.json)
     message(STATUS "Downloading compatibility list for citra...")
     file(DOWNLOAD
         https://api.citra-emu.org/gamedb/
-        "${CMAKE_BINARY_DIR}/dist/compatibility_list/compatibility_list.json" SHOW_PROGRESS)
+        "${PROJECT_BINARY_DIR}/dist/compatibility_list/compatibility_list.json" SHOW_PROGRESS)
 endif()
-if (NOT EXISTS ${CMAKE_BINARY_DIR}/dist/compatibility_list/compatibility_list.json)
-    file(WRITE ${CMAKE_BINARY_DIR}/dist/compatibility_list/compatibility_list.json "")
+if (NOT EXISTS ${PROJECT_BINARY_DIR}/dist/compatibility_list/compatibility_list.json)
+    file(WRITE ${PROJECT_BINARY_DIR}/dist/compatibility_list/compatibility_list.json "")
 endif()
 
 # Detect current compilation architecture and create standard definitions
@@ -107,7 +107,7 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 # set up output paths for executable binaries
-set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/bin)
 
 
 if (NOT MSVC)
@@ -189,7 +189,7 @@ find_package(Boost 1.66.0 QUIET)
 if (NOT Boost_FOUND)
     message(STATUS "Boost 1.66.0 or newer not found, falling back to externals")
 
-    set(BOOST_ROOT "${CMAKE_SOURCE_DIR}/externals/boost")
+    set(BOOST_ROOT "${PROJECT_SOURCE_DIR}/externals/boost")
     set(Boost_NO_SYSTEM_PATHS OFF)
     find_package(Boost QUIET REQUIRED)
 endif()
@@ -290,12 +290,12 @@ set(CLANG_FORMAT_POSTFIX "-6.0")
 find_program(CLANG_FORMAT
     NAMES clang-format${CLANG_FORMAT_POSTFIX}
           clang-format
-    PATHS ${CMAKE_BINARY_DIR}/externals)
+    PATHS ${PROJECT_BINARY_DIR}/externals)
 # if find_program doesn't find it, try to download from externals
 if (NOT CLANG_FORMAT)
     if (WIN32)
         message(STATUS "Clang format not found! Downloading...")
-        set(CLANG_FORMAT "${CMAKE_BINARY_DIR}/externals/clang-format${CLANG_FORMAT_POSTFIX}.exe")
+        set(CLANG_FORMAT "${PROJECT_BINARY_DIR}/externals/clang-format${CLANG_FORMAT_POSTFIX}.exe")
         file(DOWNLOAD
             https://github.com/yuzu-emu/ext-windows-bin/raw/master/clang-format${CLANG_FORMAT_POSTFIX}.exe
             "${CLANG_FORMAT}" SHOW_PROGRESS
@@ -311,7 +311,7 @@ if (NOT CLANG_FORMAT)
 endif()
 
 if (CLANG_FORMAT)
-    set(SRCS ${CMAKE_SOURCE_DIR}/src)
+    set(SRCS ${PROJECT_SOURCE_DIR}/src)
     set(CCOMMENT "Running clang format against all the .h and .cpp files in src/")
     if (WIN32)
         add_custom_target(clang-format
@@ -392,22 +392,22 @@ endif()
 # http://standards.freedesktop.org/icon-theme-spec/icon-theme-spec-latest.html
 # http://standards.freedesktop.org/shared-mime-info-spec/shared-mime-info-spec-latest.html
 if(ENABLE_QT AND UNIX AND NOT APPLE)
-    install(FILES "${CMAKE_SOURCE_DIR}/dist/citra.desktop"
+    install(FILES "${PROJECT_SOURCE_DIR}/dist/citra.desktop"
             DESTINATION "${CMAKE_INSTALL_PREFIX}/share/applications")
-    install(FILES "${CMAKE_SOURCE_DIR}/dist/citra.svg"
+    install(FILES "${PROJECT_SOURCE_DIR}/dist/citra.svg"
             DESTINATION "${CMAKE_INSTALL_PREFIX}/share/icons/hicolor/scalable/apps")
-    install(FILES "${CMAKE_SOURCE_DIR}/dist/citra.xml"
+    install(FILES "${PROJECT_SOURCE_DIR}/dist/citra.xml"
             DESTINATION "${CMAKE_INSTALL_PREFIX}/share/mime/packages")
 endif()
 
 if(UNIX)
     if(ENABLE_SDL2)
-        install(FILES "${CMAKE_SOURCE_DIR}/dist/citra.6"
+        install(FILES "${PROJECT_SOURCE_DIR}/dist/citra.6"
                 DESTINATION "${CMAKE_INSTALL_PREFIX}/share/man/man6")
     endif()
 
     if (ENABLE_QT)
-        install(FILES "${CMAKE_SOURCE_DIR}/dist/citra-qt.6"
+        install(FILES "${PROJECT_SOURCE_DIR}/dist/citra-qt.6"
                 DESTINATION "${CMAKE_INSTALL_PREFIX}/share/man/man6")
     endif()
 endif()
diff --git a/src/citra_qt/CMakeLists.txt b/src/citra_qt/CMakeLists.txt
index f1c937780..20fefa87c 100644
--- a/src/citra_qt/CMakeLists.txt
+++ b/src/citra_qt/CMakeLists.txt
@@ -140,15 +140,15 @@ set(UIS
 )
 
 file(GLOB COMPAT_LIST
-     ${CMAKE_BINARY_DIR}/dist/compatibility_list/compatibility_list.qrc
-     ${CMAKE_BINARY_DIR}/dist/compatibility_list/compatibility_list.json)
-file(GLOB_RECURSE ICONS ${CMAKE_SOURCE_DIR}/dist/icons/*)
-file(GLOB_RECURSE THEMES ${CMAKE_SOURCE_DIR}/dist/qt_themes/*)
+     ${PROJECT_BINARY_DIR}/dist/compatibility_list/compatibility_list.qrc
+     ${PROJECT_BINARY_DIR}/dist/compatibility_list/compatibility_list.json)
+file(GLOB_RECURSE ICONS ${PROJECT_SOURCE_DIR}/dist/icons/*)
+file(GLOB_RECURSE THEMES ${PROJECT_SOURCE_DIR}/dist/qt_themes/*)
 
 qt5_wrap_ui(UI_HDRS ${UIS})
 
 if (ENABLE_QT_TRANSLATION)
-    set(CITRA_QT_LANGUAGES "${CMAKE_SOURCE_DIR}/dist/languages" CACHE PATH "Path to the translation bundle for the Qt frontend")
+    set(CITRA_QT_LANGUAGES "${PROJECT_SOURCE_DIR}/dist/languages" CACHE PATH "Path to the translation bundle for the Qt frontend")
     option(GENERATE_QT_TRANSLATION "Generate en.ts as the translation source file" OFF)
 
     # Update source TS file if enabled
diff --git a/src/web_service/CMakeLists.txt b/src/web_service/CMakeLists.txt
index 993ba9ac6..71bf8977d 100644
--- a/src/web_service/CMakeLists.txt
+++ b/src/web_service/CMakeLists.txt
@@ -12,7 +12,7 @@ add_library(web_service STATIC
 create_target_directory_groups(web_service)
 
 get_directory_property(OPENSSL_LIBS
-        DIRECTORY ${CMAKE_SOURCE_DIR}/externals/libressl
+        DIRECTORY ${PROJECT_SOURCE_DIR}/externals/libressl
         DEFINITION OPENSSL_LIBS)
 target_compile_definitions(web_service PRIVATE -DCPPHTTPLIB_OPENSSL_SUPPORT)
 target_link_libraries(web_service PRIVATE common json-headers ${OPENSSL_LIBS} httplib lurlparser)