build: Fix Qt installer build script. (#6938)

CMakeModules/BuildInstaller.cmake

@@ -1,4 +1,5 @@
 # To use this as a script, make sure you pass in the variables BASE_DIR, SRC_DIR, BUILD_DIR, and TARGET_FILE
+cmake_minimum_required(VERSION 3.15)
 
 if(WIN32)
     set(PLATFORM "windows")
@@ -12,7 +13,8 @@ endif()
 
 list(APPEND CMAKE_MODULE_PATH "${BASE_DIR}/CMakeModules")
 include(DownloadExternals)
-download_qt(tools_ifw QT_PREFIX)
+download_qt(tools_ifw)
+get_external_prefix(qt QT_PREFIX)
 
 file(GLOB_RECURSE INSTALLER_BASE "${QT_PREFIX}/**/installerbase*")
 file(GLOB_RECURSE BINARY_CREATOR "${QT_PREFIX}/**/binarycreator*")

CMakeModules/DownloadExternals.cmake

@@ -1,13 +1,19 @@
 
-# This function downloads Qt using aqt.
+# This function downloads Qt using aqt. The path of the downloaded content will be added to the CMAKE_PREFIX_PATH.
 # Params:
 #   target: Qt dependency to install. Specify a version number to download Qt, or "tools_(name)" for a specific build tool.
-#   prefix_var: Name of a variable which will be set with the path to the extracted contents.
 function(download_qt target)
+    if (target MATCHES "tools_.*")
+        set(DOWNLOAD_QT_TOOL ON)
+    else()
+        set(DOWNLOAD_QT_TOOL OFF)
+    endif()
+
     # Determine installation parameters for OS, architecture, and compiler
     if (WIN32)
         set(host "windows")
         set(type "desktop")
+        if (NOT DOWNLOAD_QT_TOOL)
             if (MINGW)
                 set(arch "win64_mingw")
                 set(arch_path "mingw_64")
@@ -23,9 +29,10 @@ function(download_qt target)
             else()
                 message(FATAL_ERROR "Unsupported bundled Qt toolchain. Enable USE_SYSTEM_QT and provide your own.")
             endif()
+        endif()
     elseif (APPLE)
         set(host "mac")
-        if (IOS)
+        if (IOS AND NOT DOWNLOAD_QT_TOOL)
             set(type "ios")
             set(arch "ios")
             set(arch_path "ios")
@@ -45,8 +52,8 @@ function(download_qt target)
     get_external_prefix(qt base_path)
     file(MAKE_DIRECTORY "${base_path}")
 
-    if (target MATCHES "tools_.*")
-        set(prefix "${base_path}")
+    if (DOWNLOAD_QT_TOOL)
+        set(prefix "${base_path}/Tools")
         set(install_args install-tool --outputdir ${base_path} ${host} desktop ${target})
     else()
         set(prefix "${base_path}/${target}/${arch_path}")
@@ -63,7 +70,7 @@ function(download_qt target)
         if (WIN32)
             set(aqt_path "${base_path}/aqt.exe")
             file(DOWNLOAD
-                https://github.com/miurahr/aqtinstall/releases/download/v3.1.4/aqt.exe
+                https://github.com/miurahr/aqtinstall/releases/download/v3.1.7/aqt.exe
                 ${aqt_path} SHOW_PROGRESS)
             execute_process(COMMAND ${aqt_path} ${install_args}
                     WORKING_DIRECTORY ${base_path})

dist/installer/CMakeLists.txt

@@ -13,6 +13,8 @@ set(BUILD_DIR "${CMAKE_BINARY_DIR}/installer")
 set(DIST_DIR "${BUILD_DIR}/dist")
 set(TARGET_FILE "${DIST_DIR}/citra-setup-${PLATFORM}")
 
+file(MAKE_DIRECTORY "${BUILD_DIR}" "${DIST_DIR}")
+
 # Adds a custom target that will run the BuildInstaller.cmake file
 # CMake can't just run a cmake function as a custom command, so this is a way around it.
 # Calls the cmake command and runs a cmake file in "scripting" mode passing in variables with -D