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build: use fs.relative_to() instead of hand-rolled logic

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Meson has introduced a relative_to() function [1] in its fs module
since version 1.3.

[1]: https://mesonbuild.com/Fs-module.html#relative_to
This commit is contained in:
Simon Ser 2024-06-26 08:19:26 +02:00
parent 22adc65586
commit 179ed7c296
1 changed files with 3 additions and 24 deletions
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27
meson.build
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@ -3,7 +3,7 @@ project(
'c',
version: '0.19.0-dev',
license: 'MIT',
meson_version: '>=0.59.0',
meson_version: '>=1.3',
default_options: [
'c_std=' + (meson.version().version_compare('>=1.3.0') ? 'c23,c11' : 'c11'),
'warning_level=2',
@ -48,31 +48,10 @@ add_project_arguments(cc.get_supported_arguments([
'-Wno-unused-parameter',
]), language: 'c')
# Compute the relative path used by compiler invocations.
source_root = meson.current_source_dir().split('/')
build_root = meson.global_build_root().split('/')
relative_dir_parts = []
i = 0
in_prefix = true
foreach p : build_root
if i >= source_root.length() or not in_prefix or p != source_root[i]
in_prefix = false
relative_dir_parts += '..'
endif
i += 1
endforeach
i = 0
in_prefix = true
foreach p : source_root
if i >= build_root.length() or not in_prefix or build_root[i] != p
in_prefix = false
relative_dir_parts += p
endif
i += 1
endforeach
relative_dir = join_paths(relative_dir_parts) + '/'
fs = import('fs')
# Strip relative path prefixes from the code if possible, otherwise hide them.
relative_dir = fs.relative_to(meson.current_source_dir(), meson.global_build_root()) + '/'
if cc.has_argument('-fmacro-prefix-map=/prefix/to/hide=')
add_project_arguments(
'-fmacro-prefix-map=@0@='.format(relative_dir),