Use Meson to build GNUstep apps

[super-betonamu-jin]

Note: This only covers GNUstep Base, but you can easily expand it to include GUI.

Put this code in your meson.build:

# Query gnustep-config via sh
gnustep_objc_flags = run_command('sh', 'gnustep-config', '--objc-flags',
    check : true).stdout().strip()
gnustep_objc_libs  = run_command('sh', 'gnustep-config', '--objc-libs',
    check : true).stdout().strip()
gnustep_base_libs  = run_command('sh', 'gnustep-config', '--base-libs',
    check : true).stdout().strip()

# Split flags into list
objc_flags_list = gnustep_objc_flags.split()

# Filter out -M* flags (dependency generation)
objc_flags_clean = []
foreach f : objc_flags_list
  if not f.startswith('-M')
    objc_flags_clean += f
  endif
endforeach

objc_flags_clean += ['-fobjc-arc', '-fobjc-arc-exceptions']

# Build a dependency object
gnustep_dep = declare_dependency(
  compile_args : objc_flags_clean,
  link_args : gnustep_objc_libs.split() + gnustep_base_libs.split()
)

Now you can use it:

executable('hello',
  [
    'hello.m'
  ],
  objc_args: ['-std=c23', '-Wall'],
  dependencies: [
    gnustep_dep
  ],
  win_subsystem: 'console')

executable('helloCxx',
  [
    'helloCxx.mm'
  ],
  objcpp_args: ['-std=c++23', '-Wall'],
  dependencies: [
    gnustep_dep
  ],
  win_subsystem: 'console')

[dblsaiko]

Meson already has GNUstep support, you should not need to do this manually.