The gfortran toolchain does not recognize arm64 architectures

[jbloino]

Xmake Version

2.9.1

Operating System Version and Architecture

macOS Sonoma 14.4.1, Apple M3 Pro

Describe Bug

Trying to compile a program written in Fortran through xmake using GFortran provided by homebrew (package gcc, version of gfortran 14.1.0) gives the following error:

error: gfortran: error: unrecognized command-line option '-m32'

Expected Behavior

Compilation runs smoothly.

Project Configuration

Fortran source file (hello.f90)

program hello
    print *, 'hello'
end program hello

xmake.lua:

target("hello")
    add_files("hello.f90")

commands:

xmake f --toolchain=gfortran
xmake

Additional Information and Error Logs

The problem is the -m32 flag. Forcing x86_64 architecture avoids the problem.

The problem seems to be (at least in part) in toolchains/gfortran/xmake.lua, which only recognizes "x86_64", and "x64", while I think the native Apple architecture should be internally recognized as arm64.
I tried to create an alternate toolchain by copying the content of xmake.lua and adding "arm64" to have:
local march = toolchain:is_arch("x86_64", "x64", "arm64") and "-m64" or "-m32"
The -m64 compilation flag was then added but it seems that some other process still added -m32, so both flags ended up being present and the compilation failed.

Note: compiling the source file above hello.f90 simply with gfortran hello.f90 or gfortran -m64 hello.f90 gives no error.

Looking at the gcc toolchain for comparison, this problem may affect other build processes, since "arm64" was not present there too.

[waruqi]

try xmake update -s dev

[jbloino]

It works perfectly, thank you so much!