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Generate -fmacro-prefix-map to strip relative path from __FILE__.

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This provides reproducible builds and minimizes the file path in debug messages, just like an in-tree make build.

For test source, prefix with test/ in case there are any module name collisions.
This commit is contained in:
David Steele 2022-06-26 08:42:43 -04:00
parent f863fc9888
commit 59f148bf6e
1 changed files with 19 additions and 0 deletions
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19
meson.build
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@ -112,6 +112,25 @@ if get_option('fatal-errors')
add_project_arguments(cc.get_supported_arguments('-Wfatal-errors'), language: 'c')
endif
####################################################################################################################################
# Generate -fmacro-prefix-map so the relative path to the source directory is not included in the __FILE__ macro. This provides
# reproducible builds and minimizes the file path in debug messages, just like an in-tree make build. For test source, prefix with
# test/ in case there are any module name collisions.
####################################################################################################################################
file_prefix = run_command(
[
'python3',
'-c',
'import sys, os; print(os.path.relpath(sys.argv[1], sys.argv[2]))',
meson.current_source_dir(),
meson.current_build_dir(),
],
check: true,
).stdout().strip()
add_project_arguments(cc.get_supported_arguments('-fmacro-prefix-map=@0@/src/=' . format(file_prefix)), language: 'c')
add_project_arguments(cc.get_supported_arguments('-fmacro-prefix-map=@0@/test/src/=test/' . format(file_prefix)), language: 'c')
####################################################################################################################################
# Build configuration
####################################################################################################################################