Resolve linker issues with Android API 21 (dprintf, tcdrain)

Signed-off-by: Chris Renshaw <osm0sis@outlook.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/include/platform.h b/include/platform.h
index 1706b1847..026ebbe17 100644
--- a/include/platform.h
+++ b/include/platform.h
@@ -481,9 +481,14 @@ typedef unsigned smalluint;
 
 #if defined(ANDROID) || defined(__ANDROID__)
 # if __ANDROID_API__ < 8
+   /* ANDROID < 8 has no [f]dprintf at all */
 #  undef HAVE_DPRINTF
-# else
+# elif __ANDROID_API__ < 21
+   /* ANDROID < 21 has fdprintf */
 #  define dprintf fdprintf
+# else
+   /* ANDROID >= 21 has standard dprintf */
+# endif
 # endif
 # if __ANDROID_API__ < 21
 #  undef HAVE_TTYNAME_R