Error building ARCH=arm

[taoeffect]

Tried on an M2: make USE_VULKAN=1 RENDERER_DEFAULT=vulkan USE_RENDERER_DLOPEN=0 ARCH=arm -j 8 and got:

code/qcommon/vm_armv7l.c:3202:2: error: implicit declaration of function '__clear_cache' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
        __clear_cache( vm->codeBase.ptr, vm->codeBase.ptr + vm->codeLength );
        ^

[ensiform]

Apple arm platforms like the M2 is aarch64, not "arm". Pretty sure you don't have to pass arch on apple if you're building native only.

[taoeffect]

Oh, I checked the Makefile and it used both so I just picked one:

ifeq ($(ARCH),arm)
  HAVE_VM_COMPILED = true
endif
ifeq ($(ARCH),aarch64)
  HAVE_VM_COMPILED = true
endif

I get a similar error:

code/qcommon/vm_aarch64.c:3481:2: error: implicit declaration of function '__clear_cache' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
        __clear_cache( vm->codeBase.ptr, vm->codeBase.ptr + vm->codeLength );
        ^
1 error generated.

[taoeffect]

Pretty sure you don't have to pass arch on apple if you're building native only.

Oops, missed this comment. By default it builds x86_64:

$ lipo -info quake3e
Non-fat file: quake3e is architecture: x86_64

[ensiform]

Pretty sure you don't have to pass arch on apple if you're building native only.

Oops, missed this comment. By default it builds x86_64:

$ lipo -info quake3e
Non-fat file: quake3e is architecture: x86_64

Sounds like your terminal or build process is being run through rosetta then.

In terms of the error still presenting in vm_aarch64.c, there still could be a bug there with regards to the function availability. But its probably not actually present due to trying to be as x86_64?

[taoeffect]

Sounds like your terminal or build process is being run through rosetta then.

Hmm, I don't think it is, but if you know of another way I can check let me know:

$ lipo -info $(which zsh)
Architectures in the fat file: /bin/zsh are: x86_64 arm64e

But its probably not actually present due to trying to be as x86_64?

I'm not sure I understand what you're saying here. FYI it does build an x86_64 binary without error.

[ec-]

Check uname -a output - most likely you're running compilation through x86_64-emulation environment

[taoeffect]

Wow, @ec- You're right!

Darwin Macintosh.local 21.6.0 Darwin Kernel Version 21.6.0: Mon Aug 22 20:20:07 PDT 2022; root:xnu-8020.140.49~2/RELEASE_ARM64_T8110 x86_64

I have no idea why this is happening! It must be my Terminal / ZSH setup.... if you have any ideas what might be causing this I'd be very curious to know because it's causing problems with other projects too..

[taoeffect]

I figured it out!

Transitioning Homebrew from an Intel machine to Apple Silicon resulted me with an x86 version of zsh.

So to fix this I had to uninstall Homebrew and re-install it. Thanks for your help! It now builds the binary as arm64, although I can't run it, will open a separate issue for that.

EDIT: there's an existing issue: #183