add device extension mechanism to updater

Allow devices (in BoardConfig.mk) to define additional static
libraries to be linked in to updater, to make device-specific
functions available in edify scripts.  Modify the updater makefile to
arrange for device libraries to register their edify functions.

1 files changed, 6 insertions, 0 deletions

diff --git a/updater/updater.c b/updater/updater.c
index 31d93ae..1aa277c 100644
--- a/updater/updater.c
+++ b/updater/updater.c
@@ -23,6 +23,11 @@
 #include "install.h"
 #include "minzip/Zip.h"
 
+// Generated by the makefile, this function defines the
+// RegisterDeviceExtensions() function, which calls all the
+// registration functions for device-specific extensions.
+#include "register.inc"
+
 // Where in the package we expect to find the edify script to execute.
 // (Note it's "updateR-script", not the older "update-script".)
 #define SCRIPT_NAME "META-INF/com/google/android/updater-script"
@@ -76,6 +81,7 @@ int main(int argc, char** argv) {
 
     RegisterBuiltins();
     RegisterInstallFunctions();
+    RegisterDeviceExtensions();
     FinishRegistration();
 
     // Parse the script.