Porting an application to Mac M1

[runburg]

Hi, So I don't know very much about this so my question might be really straightforward to solve. I'm trying to port a cpp to Mac M1 and ran into the issue of not having <mmintrin.h>. So I found this project and thought it would be as straightforward as adding the header file and the compilation flag for ARMv8. But so far I've been thwarted.

I'm getting a bunch of errors. The first one is Unsupported target. Must be either ARMv7-A+NEON or ARMv8-A.. From what I can tell, this is getting thrown because I haven't defined the target correctly, but I'm a little mystified by what this means. Can someone point me to a resource to understand this? I'm on Mac M1 using clang v13 if that's useful.

I'm also getting a lot of unknown type names and use of undeclared identifiers. Any help is much appreciated thanks!

[jserv]

Hello @runburg! Thanks for your interest in SSE2NEON Project. Take smartdenovo for example. It can be ported to Apple M1 easily with SSE2NEON. Here are the instructions:

git clone https://github.com/ruanjue/smartdenovo
cd smartdenovo
wget https://raw.githubusercontent.com/spack/spack/95ad5b882c990971e74d04261a665ba680f7c4be/var/spack/repos/builtin/packages/smartdenovo/aarch64.patch
patch -p1 < aarch64.patch
wget https://raw.githubusercontent.com/DLTcollab/sse2neon/master/sse2neon.h
make

Then, you will get several executable files such as wtext.

$ file wtext
wtext: Mach-O 64-bit executable arm64

The above were verified on macOS Monterey. Please submit the corresponding issues if any.

[runburg]

Sorry. I think my comment was not very clear or maybe I'm misunderstanding your comment. I am trying to do the port myself (change includes and add the header files).

What I'm confused about is why I'm seeing the unsupported target message. It seems that I haven't defined certain macros (clang for example) correctly, but I'm new to these kinds of projects so I don't understand where or to what I'm supposed set these macros as.

[jserv]

What I'm confused about is why I'm seeing the unsupported target message. It seems that I haven't defined certain macros (clang for example) correctly, but I'm new to these kinds of projects so I don't understand where or to what I'm supposed set these macros as.

Can you show me the instructions to reproduce?

[runburg]

I'll try to come up with a MWE but it may take me a while since the project is pretty sprawling and I don't know which parts are creating this error.

The error I'm getting is from line 118 of sse2neon.h. From what I can tell the macros are not getting defined correctly so the target is not being set correctly. I don't know how the macros should be set on M1 Mac using clang.

[jserv]

I'll try to come up with a MWE but it may take me a while since the project is pretty sprawling and I don't know which parts are creating this error.

The error I'm getting is from line 118 of sse2neon.h. From what I can tell the macros are not getting defined correctly so the target is not being set correctly. I don't know how the macros should be set on M1 Mac using clang.

Hint: You can get the predefined macros by running gcc -dM -E - < /dev/null | grep -i arm command. Also, please show the version of command line tools for your macOS environment.

[runburg]

❯ clang -dM -E - < /dev/null | grep -i arm
#define ARM64_ARCH_8 1
#define __ARM_64BIT_STATE 1
#define __ARM_ACLE 200
#define __ARM_ALIGN_MAX_STACK_PWR 4
#define __ARM_ARCH 8
#define ARM_ARCH_8_3 1
#define ARM_ARCH_8_4 1
#define ARM_ARCH_8_5 1
#define __ARM_ARCH_ISA_A64 1
#define __ARM_ARCH_PROFILE 'A'
#define __ARM_FEATURE_ATOMICS 1
#define __ARM_FEATURE_CLZ 1
#define __ARM_FEATURE_COMPLEX 1
#define __ARM_FEATURE_CRC32 1
#define __ARM_FEATURE_CRYPTO 1
#define __ARM_FEATURE_DIRECTED_ROUNDING 1
#define __ARM_FEATURE_DIV 1
#define __ARM_FEATURE_DOTPROD 1
#define __ARM_FEATURE_FMA 1
#define __ARM_FEATURE_FP16FML 1
#define __ARM_FEATURE_FP16_SCALAR_ARITHMETIC 1
#define __ARM_FEATURE_FP16_VECTOR_ARITHMETIC 1
#define __ARM_FEATURE_IDIV 1
#define __ARM_FEATURE_JCVT 1
#define __ARM_FEATURE_LDREX 0xF
#define __ARM_FEATURE_NUMERIC_MAXMIN 1
#define __ARM_FEATURE_QRDMX 1
#define __ARM_FEATURE_UNALIGNED 1
#define __ARM_FP 0xE
#define __ARM_FP16_ARGS 1
#define __ARM_FP16_FORMAT_IEEE 1
#define __ARM_NEON 1
#define __ARM_NEON_FP 0xE
#define ARM_NEON 1
#define __ARM_PCS_AAPCS64 1
#define __ARM_SIZEOF_MINIMAL_ENUM 4
#define __ARM_SIZEOF_WCHAR_T 4
#define __arm64 1
#define arm64 1

❯ xcode-select -v
xcode-select version 2384

I'm on Big Sur 11.6 if that's necessary

[jserv]

❯ xcode-select -v xcode-select version 2384
I'm on Big Sur 11.6 if that's necessary

It seems to be fine according to the above results. Then, we need a test program to reproduce. Please provide for further investigation.

[dropdeadrus]

I've encountered almost the same issues with clang; using gcc+11 compiler instead of clang solved them.

[jserv]

I've encountered almost the same issues with clang; using gcc+11 compiler instead of clang solved them.

@dropdeadrus, Can you share the instructions to reproduce clang specific issues? Thanks.

[jserv]

No further information. Closing.

[benoithudson]

FYI I just got this error due to trying to do a universal build (x86_64 and arm64). Switching to a strictly arm64 build fixed it.