918fe04351
PR-URL: https://github.com/nodejs/node/pull/58070 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Darshan Sen <raisinten@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
81 lines
2.4 KiB
Python
81 lines
2.4 KiB
Python
# Copyright 2023 the V8 project authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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"""Calculate arguments for the gcmole plugin based on flags passed to the
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compiler for a typical target in V8.
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"""
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from pathlib import Path
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import os
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import re
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import sys
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DEFINES_RE = re.compile(r'^defines = (.*)$', re.M)
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INCLUDES_RE = re.compile(r'^include_dirs = (.*)$', re.M)
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CFLAGS_CC_RE = re.compile(r'^cflags_cc = (.*)$', re.M)
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BASE_DIR = Path(__file__).resolve().parents[2].absolute()
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# This script is always called relative to the build directory root
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# by ninja.
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BUILD_DIR_ABS = Path.cwd()
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BUILD_DIR_REL = BUILD_DIR_ABS.relative_to(BASE_DIR)
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def search_flags(regexp, ninja_config):
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match = regexp.search(ninja_config)
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assert match
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result = match.group(1)
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assert result
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return result
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def main():
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assert len(sys.argv) == 2, 'Expecting sysroot arg'
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gn_sysroot_var = sys.argv[1]
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assert gn_sysroot_var.startswith('//'), 'Expecting root-dir gn path'
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rel_sysroot = gn_sysroot_var[len('//'):]
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assert BUILD_DIR_ABS.exists()
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ninja_file = BUILD_DIR_ABS / 'obj' / 'v8_base_without_compiler.ninja'
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assert ninja_file.exists()
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with ninja_file.open() as f:
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ninja_config = f.read()
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defines = search_flags(DEFINES_RE, ninja_config)
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# ninja files escape special characters (e.g. '"', '\', '(', etc).
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defines = defines.replace('\\', '')
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includes = search_flags(INCLUDES_RE, ninja_config)
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cflags_cc = search_flags(CFLAGS_CC_RE, ninja_config)
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flags = []
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flags += defines.strip().split()
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# Include flags are relative to the build root. Make them relative to the
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# base directory for gcmole.
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# E.g. BUILD_DIR_REL = out/build and -I../../include gives -Iinclude.
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for flag in includes.strip().split():
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prefix, suffix = flag[:2], flag[2:]
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assert prefix == '-I'
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flags.append(prefix + os.path.normpath(BUILD_DIR_REL / suffix))
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# System include flags are in the ccflags
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for flag in cflags_cc.strip().split():
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if flag == "-nostdinc++":
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flags.append(flag)
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elif flag.startswith('-isystem'):
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prefix, suffix = flag[:len('-isystem')], flag[len('-isystem'):]
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assert prefix == '-isystem'
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flags.append(prefix + os.path.normpath(BUILD_DIR_REL / suffix))
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flags.append(f'--sysroot={rel_sysroot}')
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with open('v8_gcmole.args', 'w') as f:
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f.write(' '.join(flags))
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if __name__ == '__main__':
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main()
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