Build: Enable SSL in mingw by linking against WinSSL

The mingw builds aren't submitting telemetry because the curl library
they are linked against is configured to use openSSL and openSSL looks
for the certificates in the users home folder. This keeps it from
contacting web services because it can't communicate over SSL.

This commit adds a download in mingw builds that will download a
precompiled curl for mingw linked against winssl and sspi.

1 files changed, 10 insertions, 18 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f8060270e..d9c2f78a2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,6 +2,7 @@
 cmake_minimum_required(VERSION 3.6)
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMakeModules")
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/externals/cmake-modules")
+include(DownloadExternals)
 
 project(citra)
 
@@ -12,6 +13,15 @@ option(ENABLE_QT "Enable the Qt frontend" ON)
 option(CITRA_USE_BUNDLED_QT "Download bundled Qt binaries" OFF)
 
 option(ENABLE_WEB_SERVICE "Enable web services (telemetry, etc.)" ON)
+option(CITRA_USE_BUNDLED_CURL "FOR MINGW ONLY: Download curl configured against winssl instead of openssl" OFF)
+if (ENABLE_WEB_SERVICE AND CITRA_USE_BUNDLED_CURL AND WINDOWS AND MSVC)
+    message("Turning off use bundled curl as msvc can compile curl on cpr")
+    SET(CITRA_USE_BUNDLED_CURL OFF CACHE BOOL "" FORCE)
+endif()
+if (ENABLE_WEB_SERVICE AND NOT CITRA_USE_BUNDLED_CURL AND MINGW)
+    message(AUTHOR_WARNING "Turning on CITRA_USE_BUNDLED_CURL. Override it only if you know what you are doing.")
+    SET(CITRA_USE_BUNDLED_CURL ON CACHE BOOL "" FORCE)
+endif()
 
 if(NOT EXISTS ${CMAKE_SOURCE_DIR}/.git/hooks/pre-commit)
     message(STATUS "Copying pre-commit hook")
@@ -151,24 +161,6 @@ set_property(DIRECTORY APPEND PROPERTY
 # System imported libraries
 # ======================
 
-# This function downloads a binary library package from our external repo.
-# Params:
-#   remote_path: path to the file to download, relative to the remote repository root
-#   prefix_var: name of a variable which will be set with the path to the extracted contents
-function(download_bundled_external remote_path lib_name prefix_var)
-    set(prefix "${CMAKE_BINARY_DIR}/externals/${lib_name}")
-    if (NOT EXISTS "${prefix}")
-        message(STATUS "Downloading binaries for ${lib_name}...")
-        file(DOWNLOAD
-            https://github.com/citra-emu/ext-windows-bin/raw/master/${remote_path}${lib_name}.7z
-            "${CMAKE_BINARY_DIR}/externals/${lib_name}.7z" SHOW_PROGRESS)
-        execute_process(COMMAND ${CMAKE_COMMAND} -E tar xf "${CMAKE_BINARY_DIR}/externals/${lib_name}.7z"
-            WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/externals")
-    endif()
-    message(STATUS "Using bundled binaries at ${prefix}")
-    set(${prefix_var} "${prefix}" PARENT_SCOPE)
-endfunction()
-
 find_package(PNG QUIET)
 if (NOT PNG_FOUND)
     message(STATUS "libpng not found. Some debugging features have been disabled.")