623ef92e4f
Can be run like gn gen out/debug --ide=json --json-ide-script=../../gn/gn_to_cmake.py or gn gen out/debug --ide=json python gn/gn_to_cmake.py out/debug/project.json This first pass creates CMakeLists.txt with just enough information for an ide. Each target is just a static library with sources, include directories, and defines. NOTRY=true This isn't automatically tested. Review-Url: https://codereview.chromium.org/2363873002
111 lines
3.0 KiB
Python
111 lines
3.0 KiB
Python
#!/usr/bin/env python
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#
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# Copyright 2016 Google Inc.
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#
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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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"""
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Usage: gn_to_cmake.py <json_file_name>
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gn gen out/config --ide=json --json-ide-script=../../gn/gn_to_cmake.py
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or
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gn gen out/config --ide=json
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python gn/gn_to_cmake.py out/config/project.json
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"""
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import json
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import posixpath
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import os
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import sys
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def write_project(project):
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def get_base_name(target_name):
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base_name = posixpath.basename(target_name)
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sep = base_name.rfind(":")
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if sep != -1:
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base_name = base_name[sep+1:]
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return base_name
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def get_output_name(target_name, target_properties):
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output_name = target_properties.get("output_name", None)
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if output_name is None:
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output_name = get_base_name(target_name)
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output_extension = target_properties.get("output_extension", None)
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if output_extension is not None:
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output_name = posixpath.splitext(output_name)[0]
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if len(output_extension):
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output_name += "." + output_extension
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return output_name
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def get_absolute_path(root_path, path):
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if path.startswith("//"):
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return root_path + "/" + path[2:]
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else:
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return path
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build_settings = project['build_settings']
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root_path = build_settings['root_path']
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build_path = os.path.join(root_path, build_settings['build_dir'][2:])
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out = open(os.path.join(build_path, 'CMakeLists.txt'), 'w+')
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out.write('cmake_minimum_required(VERSION 2.8.8 FATAL_ERROR)\n')
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out.write('cmake_policy(VERSION 2.8.8)\n')
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for target_name, target_properties in project['targets'].items():
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sources = target_properties.get('sources', [])
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if not sources:
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continue
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target_output_name = get_output_name(target_name, target_properties)
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out.write('\n')
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out.write('add_library(')
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out.write(target_output_name)
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out.write(' STATIC\n')
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for source in sources:
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out.write(' "')
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out.write(get_absolute_path(root_path, source))
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out.write('"\n')
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out.write(')\n')
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out.write('set_target_properties(')
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out.write(target_output_name)
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out.write(' PROPERTIES EXCLUDE_FROM_ALL "TRUE")\n')
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out.write('set_property(TARGET ')
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out.write(target_output_name)
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out.write(' APPEND PROPERTY INCLUDE_DIRECTORIES\n')
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for include_dir in target_properties.get('include_dirs', []):
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out.write(' "')
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out.write(get_absolute_path(root_path, include_dir))
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out.write('"\n')
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out.write(')\n')
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out.write('set_target_properties(')
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out.write(target_output_name)
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out.write(' PROPERTIES COMPILE_DEFINITIONS "')
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for define in target_properties.get('defines', []):
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out.write(define)
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out.write(';')
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out.write('")\n')
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def main():
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if len(sys.argv) != 2:
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print('Usage: ' + sys.argv[0] + ' <json_file_name>')
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exit(1)
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json_path = sys.argv[1]
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project = None
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with open(json_path, 'r') as json_file:
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project = json.loads(json_file.read())
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write_project(project)
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if __name__ == "__main__":
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main()
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