On 12/13/22 9:35 AM, zoujiaqing wrote:
On Saturday, 3 December 2022 at 20:33:59 UTC, Steven Schveighoffer wrote:

The issue is dub. Make sure you are using the dub built for ARM.

What Apple does is if any program in the same process group is x86 specific, then all the executed programs that are universal (including the linker) will switch to that mode.

The linker thinks you are building on x86, even though the compiler is doing ARM64. I ran into this early on too. Switching to the dub that ships with ldc built for ARM solved it!

-Steve


```[zoujiaqing@mac server % ~/Programs/ldc/bin/dub run --compiler=ldc2 --arch=arm64-apple-macos
Performing "debug" build using ldc2 for aarch64, arm_hardfloat.
taggedalgebraic 0.11.22: target for configuration "library" is up to date.
eventcore 0.9.20+commit.4.g6744ae7: target for configuration "cfrunloop" is up to date.
server ~master: building configuration "application"...
Linking...
ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: alignment (1) of atom 'anon' is too small and may result in unaligned pointers ld: warning: pointer not aligned at address 0x100334231 ('anon' + 561 from .dub/build/application-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-FA51B7352B8B88D87B3B8911362A8A52/server.o) ld: warning: pointer not aligned at address 0x1003350DB ('anon' + 2025 from ../../eventcore/.dub/build/cfrunloop-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-18F6DB0DFA53563841F49715E25DF4FC/libeventcore.a(eventcore.driver.o)) ld: warning: pointer not aligned at address 0x1003398EB ('anon' + 1759 from ../../eventcore/.dub/build/cfrunloop-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-18F6DB0DFA53563841F49715E25DF4FC/libeventcore.a(eventcore.drivers.posix.driver.o)) ld: warning: pointer not aligned at address 0x10033B426 ('anon' + 696 from ../../eventcore/.dub/build/cfrunloop-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-18F6DB0DFA53563841F49715E25DF4FC/libeventcore.a(eventcore.drivers.posix.events.o)) ld: warning: pointer not aligned at address 0x10033C2A1 ('anon' + 618 from ../../eventcore/.dub/build/cfrunloop-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-18F6DB0DFA53563841F49715E25DF4FC/libeventcore.a(eventcore.drivers.posix.kqueue.o)) ld: warning: pointer not aligned at address 0x10033C942 ('anon' + 1186 from ../../eventcore/.dub/build/cfrunloop-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-18F6DB0DFA53563841F49715E25DF4FC/libeventcore.a(eventcore.drivers.posix.pipes.o)) ld: warning: pointer not aligned at address 0x10033EE5E ('anon' + 1258 from ../../eventcore/.dub/build/cfrunloop-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-18F6DB0DFA53563841F49715E25DF4FC/libeventcore.a(eventcore.drivers.posix.processes.o)) ld: warning: pointer not aligned at address 0x100342E2A ('anon' + 872 from ../../eventcore/.dub/build/cfrunloop-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-18F6DB0DFA53563841F49715E25DF4FC/libeventcore.a(eventcore.drivers.posix.sockets.o)) ld: warning: pointer not aligned at address 0x1003479E2 ('anon' + 630 from ../../eventcore/.dub/build/cfrunloop-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-18F6DB0DFA53563841F49715E25DF4FC/libeventcore.a(eventcore.drivers.posix.watchers.o)) ld: warning: pointer not aligned at address 0x100349562 ('anon' + 1437 from ../../eventcore/.dub/build/cfrunloop-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-18F6DB0DFA53563841F49715E25DF4FC/libeventcore.a(eventcore.drivers.threadedfile.o)) ld: warning: pointer not aligned at address 0x10034B9F2 ('anon' + 1597 from ../../eventcore/.dub/build/cfrunloop-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-18F6DB0DFA53563841F49715E25DF4FC/libeventcore.a(eventcore.drivers.timer.o)) ld: warning: pointer not aligned at address 0x10034D833 ('anon' + 372 from ../../eventcore/.dub/build/cfrunloop-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-18F6DB0DFA53563841F49715E25DF4FC/libeventcore.a(eventcore.internal.consumablequeue.o)) ld: warning: pointer not aligned at address 0x10034E57E ('anon' + 244 from ../../eventcore/.dub/build/cfrunloop-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-18F6DB0DFA53563841F49715E25DF4FC/libeventcore.a(eventcore.internal.dlist.o)) ld: warning: pointer not aligned at address 0x10034EC95 ('anon' + 1228 from ../../eventcore/.dub/build/cfrunloop-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-18F6DB0DFA53563841F49715E25DF4FC/libeventcore.a(eventcore.internal.ioworker.o)) ld: warning: pointer not aligned at address 0x100351681 ('anon' + 4868 from ../../eventcore/.dub/build/cfrunloop-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-18F6DB0DFA53563841F49715E25DF4FC/libeventcore.a(eventcore.internal.utils.o)) ld: warning: pointer not aligned at address 0x10036F251 ('anon' + 270 from ../../../.dub/packages/taggedalgebraic-0.11.22/taggedalgebraic/.dub/build/library-debug-posix.osx.darwin-aarch64.arm_hardfloat-ldc_v1.30.0-2F44BAD74994DE04344CC9119014729D/libtaggedalgebraic.a(taggedalgebraic.o))
ld: unaligned pointer(s) for architecture arm64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Error: /usr/bin/cc failed with status: 1
ldc2 failed with exit code 1.
```

So hard ..

Yeah, that's a known issue: https://github.com/ldc-developers/ldc/issues/3864

Try building with `-b plain` to avoid the debug build

-Steve

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