Unable to run iwasm on MacOS after #2992

[eloparco]

After #2992, I'm not able to run iwasm on MacOS.

When I build, I get

ld: warning: non-standard -pagezero_size is deprecated when targeting macOS 13.0 or later

And if I run iwasm I get:

./iwasm
[1]    2986 killed     ./iwasm

If I try running with a debugger, I get

lldb -- ./iwasm                               
(lldb) target create "./iwasm"
Current executable set to '/Users/eloparco/dev/forks/wasm-micro-runtime/samples/wasi-threads/build/iwasm' (arm64).
(lldb) run
error: Malformed Mach-o file

If I comment this line out

wasm-micro-runtime/build-scripts/config_common.cmake

Line 469 in 0844245

set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-pagezero_size,0x4000")

everything is fine.

[wenyongh]

@eloparco, @yamt can we add some checks for this flag? For example, can we only enable it when the macOS version is smaller than 13.0?

[yamt]

i tested #2992 with macOS/x86-64.

ProductName:    macOS
ProductVersion: 12.7.1
BuildVersion:   21G920

i don't have other versions of macOS handy.

[eloparco]

I'm using:

$ sw_vers
ProductName:            macOS
ProductVersion:         13.3.1
BuildVersion:           22E261

[yamt]

I'm using:

$ sw_vers
ProductName:            macOS
ProductVersion:         13.3.1
BuildVersion:           22E261

does man ld on your system have some info about the deprecation?
mine has:

     -pagezero_size size
             By default the linker creates an unreadable segment starting at
             address zero named __PAGEZERO.  Its existence will cause a bus
             error if a NULL pointer is dereferenced.  The argument size is a
             hexadecimal number with an optional leading 0x.  If size is zero,
             the linker will not generate a page zero segment.  By default on
             32-bit architectures the page zero size is 4KB.  On 64-bit
             architectures, the default size is 4GB.

[eloparco]

does man ld on your system have some info about the deprecation?

No, it's the same as yours

[yamt]

And if I run iwasm I get:

./iwasm
[1]    2986 killed     ./iwasm

If I try running with a debugger, I get

lldb -- ./iwasm                               
(lldb) target create "./iwasm"
Current executable set to '/Users/eloparco/dev/forks/wasm-micro-runtime/samples/wasi-threads/build/iwasm' (arm64).
(lldb) run
error: Malformed Mach-o file

does it mean, a binary built for 12 doesn't work on 13?
("cmake -DCMAKE_OSX_DEPLOYMENT_TARGET=12.0 ..")

[wenyongh]

It is strange that the issue was closed automatically after #3025 was merged. I re-open it again.

[yamt]

cf. golang/go#54482
they just removed the option as it was not actually useful for them. (unlike us)

[eloparco]

does it mean, a binary built for 12 doesn't work on 13?
("cmake -DCMAKE_OSX_DEPLOYMENT_TARGET=12.0 ..")

Yes, so we should probably do this #3025 (comment) and in the release CI we build with -DCMAKE_OSX_DEPLOYMENT_TARGET=13.0. What do you think?

[yamt]

i'm inclined to revert #2992 as it's cumbersome to deal with incompatibilities among osx versions.