diff --git a/libde265/arm/CMakeLists.txt b/libde265/arm/CMakeLists.txt
--- a/libde265/arm/CMakeLists.txt
+++ b/libde265/arm/CMakeLists.txt
@@ -3,12 +3,17 @@ add_library(arm OBJECT arm.cc arm.h)
 if(HAVE_NEON)
   add_library(arm_neon OBJECT
     cpudetect.S
     hevcdsp_qpel_neon.S
   )
 
+  # LLVM's integrated assembler (used by Android NDK's clang) does not
+  # support the .func/.endfunc directives enabled by HAVE_AS_FUNC.
+  if(NOT CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+    set(AS_FUNC_FLAG -DHAVE_AS_FUNC)
+  endif()
   target_compile_options(arm_neon PRIVATE
     -mfpu=neon
     -DHAVE_NEON
     -DEXTERN_ASM=
-    -DHAVE_AS_FUNC
+    ${AS_FUNC_FLAG}
     -DHAVE_SECTION_DATA_REL_RO
   )