Add build options for Sparkle updater

Two new build options are added:

`MAC_SPARKLE_PUB_KEY`: the public key used to verify the signatures of the appcast
`MAC_SPARKLE_APPCAST_URL`: the URL where the `appcast.xml` is located

If the updater should be disabled on macOS, set either of these to an empty string.

2 files changed, 14 insertions, 0 deletions

diff --git a/buildconfig/BuildConfig.cpp.in b/buildconfig/BuildConfig.cpp.in
index 70f8f7f0..2d07bc58 100644
--- a/buildconfig/BuildConfig.cpp.in
+++ b/buildconfig/BuildConfig.cpp.in
@@ -61,6 +61,14 @@ Config::Config()
     BUILD_PLATFORM = "@Launcher_BUILD_PLATFORM@";
     UPDATER_BASE = "@Launcher_UPDATER_BASE@";
 
+    MAC_SPARKLE_PUB_KEY = "@MACOSX_SPARKLE_UPDATE_PUBLIC_KEY@";
+    MAC_SPARKLE_APPCAST_URL = "@MACOSX_SPARKLE_UPDATE_FEED_URL@";
+
+    if (BUILD_PLATFORM == "macOS" && !MAC_SPARKLE_PUB_KEY.isEmpty() && !MAC_SPARKLE_APPCAST_URL.isEmpty())
+    {
+        UPDATER_ENABLED = true;
+    }
+
     GIT_COMMIT = "@Launcher_GIT_COMMIT@";
     GIT_REFSPEC = "@Launcher_GIT_REFSPEC@";
     if (GIT_REFSPEC == QStringLiteral("GITDIR-NOTFOUND"))
diff --git a/buildconfig/BuildConfig.h b/buildconfig/BuildConfig.h
index 8594e46d..e41d4ba0 100644
--- a/buildconfig/BuildConfig.h
+++ b/buildconfig/BuildConfig.h
@@ -74,6 +74,12 @@ class Config {
     /// URL for the updater's channel
     QString UPDATER_BASE;
 
+    /// The public key used to sign releases for the Sparkle updater appcast
+    QString MAC_SPARKLE_PUB_KEY;
+
+    /// URL for the Sparkle updater's appcast
+    QString MAC_SPARKLE_APPCAST_URL;
+
     /// User-Agent to use.
     QString USER_AGENT;