For maximum compatibility,ģ2-bit code should perform runtime detection to confirm that Neon code can be Not all ARMv7-based Android devices support Neon. Set_source_files_properties(foo.cpp PROPERTIES COMPILE_FLAGS -mfpu=neon) To build a specific source file with Neon, add the following to yourĬMakeLists.txt: if(ANDROID_ABI STREQUAL armeabi-v7a) The 32-bit ARM instruction set (instead of Thumb2) for non-Neon instructions. For example, the following builds oneįile ( foo.c) with Neon support and another ( bar.c) without: LOCAL_SRC_FILES := foo.c.neon bar.c
neon suffix to indicate that you want to build When listing source files for your LOCAL_SRC_FILES variable, you have the To exclude CPUs that do not support Neon to prevent your application fromīeing installed on those devices. Alternatively, the Play Store console can be used You need to disable Neon to support non-Neon devices (which are rare), invert
Build Note: For NDK r21 and newer Neon is enabled by default for all API levels. Provides more information about Neon intrinsics and Neon programming in general. In C and C++ code to take advantage of the Advanced SIMD extension. The NDK supports the compilation of modules or even specific source files with Not all ARMv7-based Android devices support Neon, but devices that do mayīenefit significantly from its support for scalar/vector instructions. Instructions and registers (shared with the FPU) comparable to MMX/SSE/3DNow! Instruction set extension for ARMv7 and ARMv8. The NDK supports ARM Advanced SIMD, commonly known as Neon, an optional
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