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-rw-r--r--include/binder/IBinder.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/binder/IBinder.h b/include/binder/IBinder.h
index 43b654334b..d98d4c5f14 100644
--- a/include/binder/IBinder.h
+++ b/include/binder/IBinder.h
@@ -23,8 +23,12 @@
#include <utils/Vector.h>
+// linux/binder.h already defines this, but we can't just include it from there
+// because there are host builds that include this file.
+#ifndef B_PACK_CHARS
#define B_PACK_CHARS(c1, c2, c3, c4) \
((((c1)<<24)) | (((c2)<<16)) | (((c3)<<8)) | (c4))
+#endif // B_PACK_CHARS
// ---------------------------------------------------------------------------
namespace android {