Multiple @BASENAME@ for configure_file() raising warning

I have this snippet of meson :

configure_file(
  input: 'intel_sanitize_gpu.in',
  output: '@BASENAME@',
  install_dir: get_option('bindir'),
  configuration: sanitize_data,
)

libintel_sanitize_gpu = shared_library(
  'intel_sanitize_gpu',
  files('intel_sanitize_gpu.c'),
  dependencies : [dep_dl, dep_thread],
  include_directories : [inc_common, inc_intel, inc_drm_uapi],
  link_with : [libintel_common, libmesa_util],
  c_args : [c_vis_args, no_override_init_args],
  install_dir: get_option('libexecdir'),
  install: true,
)

configure_file(
  input : 'intel_dump_gpu.in',
  output : '@BASENAME@',
  install_dir: get_option('bindir'),
  configuration: sanitize_data,
)

It's raising the following warning :

WARNING: Output file "src/intel/tools/@BASENAME@" for configure_file() at src/intel/tools/meson.build:67 overwrites configure_file() output at src/intel/tools/meson.build:49

(line 49 is first configure_file(), line 67 and the second one)

The resulting files are fine, it's just odd to raise a warning on a template that should be replaced.

Start by reproducing the two configure_file() calls from the issue in a meson.build file, then trace configure_file() output-name handling and the warning for duplicate outputs. Done means the @BASENAME@ placeholders resolve to distinct files without the spurious overwrite warning, while genuine duplicate outputs still warn.