Merge "Add an __ANDROID_RAMDISK__ preprocessor define." am: 7309742728 am: 6a3b60969e am: 13f34bef8d am: a480cc78ef

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/1989090

Change-Id: If7bc2437ff79ab12289a0b4466cf2a9194f265f4
diff --git a/cc/compiler.go b/cc/compiler.go
index 7645cbb..eb5458f 100644
--- a/cc/compiler.go
+++ b/cc/compiler.go
@@ -406,6 +406,10 @@
 		flags.Global.CommonFlags = append(flags.Global.CommonFlags, "-D__ANDROID_RECOVERY__")
 	}
 
+	if ctx.inRecovery() || ctx.inRamdisk() || ctx.inVendorRamdisk() {
+		flags.Global.CommonFlags = append(flags.Global.CommonFlags, "-D__ANDROID_RAMDISK__")
+	}
+
 	if ctx.apexVariationName() != "" {
 		flags.Global.CommonFlags = append(flags.Global.CommonFlags, "-D__ANDROID_APEX__")
 		if ctx.Device() {