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777435c470
When we reconfigure, `configure_file()` is called again, and `*.gresource.xml` files are regenerated, which causes many (all?) binaries to be relinked. Now we only write those out if the contents actually changed (or if the output didn't already exist). This is exactly what Meson already does with `configure_file()` when `command:` is not used. While we're at it, also do the same for `gen-c-array.py` and `gentypefuncs.py` for completeness. Now even if the input to those changes, re-building of those custom targets may not result in relinking if the outputted C files have the same contents.
44 lines
1.1 KiB
Python
44 lines
1.1 KiB
Python
#!/usr/bin/env python3
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import os
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import argparse
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import sys
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import filecmp
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def replace_if_changed(new, old):
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'''
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Compare contents and only replace if changed to avoid triggering a rebuild.
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'''
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try:
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changed = not filecmp.cmp(new, old, shallow=False)
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except FileNotFoundError:
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changed = True
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if changed:
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os.replace(new, old)
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else:
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os.remove(new)
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parser = argparse.ArgumentParser()
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parser.add_argument('--array-name', help='The name of the array variable')
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parser.add_argument('--output', metavar='STRING', help='Output filename',
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default=None)
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parser.add_argument('input', metavar='FILE', help='The input file',
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type=argparse.FileType('r'))
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args = parser.parse_args()
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if args.output is None:
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output = sys.stdout
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else:
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output = args.output + '~'
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with open(output, 'w') as f:
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f.write('static const char {}[] = {{\n'.format(args.array_name))
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for line in args.input:
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for ch in line:
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f.write(' 0x{:02x},\n'.format(ord(ch)))
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f.write('};')
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if args.output is not None:
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replace_if_changed(output, args.output)
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