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- #!/usr/bin/env python
- #
- # Copyright 2016 Google Inc.
- #
- # Use of this source code is governed by a BSD-style license that can be
- # found in the LICENSE file.
- """
- Usage: gn_to_cmake.py <json_file_name>
- gn gen out/config --ide=json --json-ide-script=../../gn/gn_to_cmake.py
- or
- gn gen out/config --ide=json
- python gn/gn_to_cmake.py out/config/project.json
- The first is recommended, as it will auto-update.
- """
- import itertools
- import functools
- import json
- import posixpath
- import os
- import string
- import sys
- def CMakeStringEscape(a):
- """Escapes the string 'a' for use inside a CMake string.
- This means escaping
- '\' otherwise it may be seen as modifying the next character
- '"' otherwise it will end the string
- ';' otherwise the string becomes a list
- The following do not need to be escaped
- '#' when the lexer is in string state, this does not start a comment
- """
- return a.replace('\\', '\\\\').replace(';', '\\;').replace('"', '\\"')
- def CMakeTargetEscape(a):
- """Escapes the string 'a' for use as a CMake target name.
- CMP0037 in CMake 3.0 restricts target names to "^[A-Za-z0-9_.:+-]+$"
- The ':' is only allowed for imported targets.
- """
- def Escape(c):
- if c in string.ascii_letters or c in string.digits or c in '_.+-':
- return c
- else:
- return '__'
- return ''.join(map(Escape, a))
- def SetVariable(out, variable_name, value):
- """Sets a CMake variable."""
- out.write('set("')
- out.write(CMakeStringEscape(variable_name))
- out.write('" "')
- out.write(CMakeStringEscape(value))
- out.write('")\n')
- def SetVariableList(out, variable_name, values):
- """Sets a CMake variable to a list."""
- if not values:
- return SetVariable(out, variable_name, "")
- if len(values) == 1:
- return SetVariable(out, variable_name, values[0])
- out.write('list(APPEND "')
- out.write(CMakeStringEscape(variable_name))
- out.write('"\n "')
- out.write('"\n "'.join([CMakeStringEscape(value) for value in values]))
- out.write('")\n')
- def SetFilesProperty(output, variable, property_name, values, sep):
- """Given a set of source files, sets the given property on them."""
- output.write('set_source_files_properties(')
- WriteVariable(output, variable)
- output.write(' PROPERTIES ')
- output.write(property_name)
- output.write(' "')
- for value in values:
- output.write(CMakeStringEscape(value))
- output.write(sep)
- output.write('")\n')
- def SetCurrentTargetProperty(out, property_name, values, sep=''):
- """Given a target, sets the given property."""
- out.write('set_target_properties("${target}" PROPERTIES ')
- out.write(property_name)
- out.write(' "')
- for value in values:
- out.write(CMakeStringEscape(value))
- out.write(sep)
- out.write('")\n')
- def WriteVariable(output, variable_name, prepend=None):
- if prepend:
- output.write(prepend)
- output.write('${')
- output.write(variable_name)
- output.write('}')
- # See GetSourceFileType in gn
- source_file_types = {
- '.cc': 'cxx',
- '.cpp': 'cxx',
- '.cxx': 'cxx',
- '.m': 'objc',
- '.mm': 'objcc',
- '.c': 'c',
- '.s': 'asm',
- '.S': 'asm',
- '.asm': 'asm',
- '.o': 'obj',
- '.obj': 'obj',
- }
- class CMakeTargetType(object):
- def __init__(self, command, modifier, property_modifier, is_linkable):
- self.command = command
- self.modifier = modifier
- self.property_modifier = property_modifier
- self.is_linkable = is_linkable
- CMakeTargetType.custom = CMakeTargetType('add_custom_target', 'SOURCES',
- None, False)
- # See GetStringForOutputType in gn
- cmake_target_types = {
- 'unknown': CMakeTargetType.custom,
- 'group': CMakeTargetType.custom,
- 'executable': CMakeTargetType('add_executable', None, 'RUNTIME', True),
- 'loadable_module': CMakeTargetType('add_library', 'MODULE', 'LIBRARY', True),
- 'shared_library': CMakeTargetType('add_library', 'SHARED', 'LIBRARY', True),
- 'static_library': CMakeTargetType('add_library', 'STATIC', 'ARCHIVE', True),
- 'source_set': CMakeTargetType('add_library', 'OBJECT', None, False),
- 'copy': CMakeTargetType.custom,
- 'action': CMakeTargetType.custom,
- 'action_foreach': CMakeTargetType.custom,
- 'bundle_data': CMakeTargetType.custom,
- 'create_bundle': CMakeTargetType.custom,
- }
- def FindFirstOf(s, a):
- return min(s.find(i) for i in a if i in s)
- class Project(object):
- def __init__(self, project_json):
- self.targets = project_json['targets']
- build_settings = project_json['build_settings']
- self.root_path = build_settings['root_path']
- self.build_path = posixpath.join(self.root_path,
- build_settings['build_dir'][2:])
- def GetAbsolutePath(self, path):
- if path.startswith("//"):
- return self.root_path + "/" + path[2:]
- else:
- return path
- def GetObjectSourceDependencies(self, gn_target_name, object_dependencies):
- """All OBJECT libraries whose sources have not been absorbed."""
- dependencies = self.targets[gn_target_name].get('deps', [])
- for dependency in dependencies:
- dependency_type = self.targets[dependency].get('type', None)
- if dependency_type == 'source_set':
- object_dependencies.add(dependency)
- if dependency_type not in gn_target_types_that_absorb_objects:
- self.GetObjectSourceDependencies(dependency, object_dependencies)
- def GetObjectLibraryDependencies(self, gn_target_name, object_dependencies):
- """All OBJECT libraries whose libraries have not been absorbed."""
- dependencies = self.targets[gn_target_name].get('deps', [])
- for dependency in dependencies:
- dependency_type = self.targets[dependency].get('type', None)
- if dependency_type == 'source_set':
- object_dependencies.add(dependency)
- self.GetObjectLibraryDependencies(dependency, object_dependencies)
- def GetCMakeTargetName(self, gn_target_name):
- # See <chromium>/src/tools/gn/label.cc#Resolve
- # //base/test:test_support(//build/toolchain/win:msvc)
- path_separator = FindFirstOf(gn_target_name, (':', '('))
- location = None
- name = None
- toolchain = None
- if not path_separator:
- location = gn_target_name[2:]
- else:
- location = gn_target_name[2:path_separator]
- toolchain_separator = gn_target_name.find('(', path_separator)
- if toolchain_separator == -1:
- name = gn_target_name[path_separator + 1:]
- else:
- if toolchain_separator > path_separator:
- name = gn_target_name[path_separator + 1:toolchain_separator]
- assert gn_target_name.endswith(')')
- toolchain = gn_target_name[toolchain_separator + 1:-1]
- assert location or name
- cmake_target_name = None
- if location.endswith('/' + name):
- cmake_target_name = location
- elif location:
- cmake_target_name = location + '_' + name
- else:
- cmake_target_name = name
- if toolchain:
- cmake_target_name += '--' + toolchain
- return CMakeTargetEscape(cmake_target_name)
- class Target(object):
- def __init__(self, gn_target_name, project):
- self.gn_name = gn_target_name
- self.properties = project.targets[self.gn_name]
- self.cmake_name = project.GetCMakeTargetName(self.gn_name)
- self.gn_type = self.properties.get('type', None)
- self.cmake_type = cmake_target_types.get(self.gn_type, None)
- def WriteAction(out, target, project, sources, synthetic_dependencies):
- outputs = []
- output_directories = set()
- for output in target.properties.get('outputs', []):
- output_abs_path = project.GetAbsolutePath(output)
- outputs.append(output_abs_path)
- output_directory = posixpath.dirname(output_abs_path)
- if output_directory:
- output_directories.add(output_directory)
- outputs_name = '${target}__output'
- SetVariableList(out, outputs_name, outputs)
- out.write('add_custom_command(OUTPUT ')
- WriteVariable(out, outputs_name)
- out.write('\n')
- if output_directories:
- out.write(' COMMAND ${CMAKE_COMMAND} -E make_directory "')
- out.write('" "'.join(map(CMakeStringEscape, output_directories)))
- out.write('"\n')
- script = target.properties['script']
- arguments = target.properties['args']
- out.write(' COMMAND python "')
- out.write(CMakeStringEscape(project.GetAbsolutePath(script)))
- out.write('"')
- if arguments:
- out.write('\n "')
- out.write('"\n "'.join(map(CMakeStringEscape, arguments)))
- out.write('"')
- out.write('\n')
- out.write(' DEPENDS ')
- for sources_type_name in sources.values():
- WriteVariable(out, sources_type_name, ' ')
- out.write('\n')
- #TODO: CMake 3.7 is introducing DEPFILE
- out.write(' WORKING_DIRECTORY "')
- out.write(CMakeStringEscape(project.build_path))
- out.write('"\n')
- out.write(' COMMENT "Action: ${target}"\n')
- out.write(' VERBATIM)\n')
- synthetic_dependencies.add(outputs_name)
- def ExpandPlaceholders(source, a):
- source_dir, source_file_part = posixpath.split(source)
- source_name_part, _ = posixpath.splitext(source_file_part)
- #TODO: {{source_gen_dir}}, {{source_out_dir}}, {{response_file_name}}
- return a.replace('{{source}}', source) \
- .replace('{{source_file_part}}', source_file_part) \
- .replace('{{source_name_part}}', source_name_part) \
- .replace('{{source_dir}}', source_dir) \
- .replace('{{source_root_relative_dir}}', source_dir)
- def WriteActionForEach(out, target, project, sources, synthetic_dependencies):
- all_outputs = target.properties.get('outputs', [])
- inputs = target.properties.get('sources', [])
- # TODO: consider expanding 'output_patterns' instead.
- outputs_per_input = len(all_outputs) / len(inputs)
- for count, source in enumerate(inputs):
- source_abs_path = project.GetAbsolutePath(source)
- outputs = []
- output_directories = set()
- for output in all_outputs[outputs_per_input * count:
- outputs_per_input * (count+1)]:
- output_abs_path = project.GetAbsolutePath(output)
- outputs.append(output_abs_path)
- output_directory = posixpath.dirname(output_abs_path)
- if output_directory:
- output_directories.add(output_directory)
- outputs_name = '${target}__output_' + str(count)
- SetVariableList(out, outputs_name, outputs)
- out.write('add_custom_command(OUTPUT ')
- WriteVariable(out, outputs_name)
- out.write('\n')
- if output_directories:
- out.write(' COMMAND ${CMAKE_COMMAND} -E make_directory "')
- out.write('" "'.join(map(CMakeStringEscape, output_directories)))
- out.write('"\n')
- script = target.properties['script']
- # TODO: need to expand {{xxx}} in arguments
- arguments = target.properties['args']
- out.write(' COMMAND python "')
- out.write(CMakeStringEscape(project.GetAbsolutePath(script)))
- out.write('"')
- if arguments:
- out.write('\n "')
- expand = functools.partial(ExpandPlaceholders, source_abs_path)
- out.write('"\n "'.join(map(CMakeStringEscape, map(expand,arguments))))
- out.write('"')
- out.write('\n')
- out.write(' DEPENDS')
- if 'input' in sources:
- WriteVariable(out, sources['input'], ' ')
- out.write(' "')
- out.write(CMakeStringEscape(source_abs_path))
- out.write('"\n')
- #TODO: CMake 3.7 is introducing DEPFILE
- out.write(' WORKING_DIRECTORY "')
- out.write(CMakeStringEscape(project.build_path))
- out.write('"\n')
- out.write(' COMMENT "Action ${target} on ')
- out.write(CMakeStringEscape(source_abs_path))
- out.write('"\n')
- out.write(' VERBATIM)\n')
- synthetic_dependencies.add(outputs_name)
- def WriteCopy(out, target, project, sources, synthetic_dependencies):
- inputs = target.properties.get('sources', [])
- raw_outputs = target.properties.get('outputs', [])
- # TODO: consider expanding 'output_patterns' instead.
- outputs = []
- for output in raw_outputs:
- output_abs_path = project.GetAbsolutePath(output)
- outputs.append(output_abs_path)
- outputs_name = '${target}__output'
- SetVariableList(out, outputs_name, outputs)
- out.write('add_custom_command(OUTPUT ')
- WriteVariable(out, outputs_name)
- out.write('\n')
- for src, dst in zip(inputs, outputs):
- abs_src_path = CMakeStringEscape(project.GetAbsolutePath(src))
- # CMake distinguishes between copying files and copying directories but
- # gn does not. We assume if the src has a period in its name then it is
- # a file and otherwise a directory.
- if "." in os.path.basename(abs_src_path):
- out.write(' COMMAND ${CMAKE_COMMAND} -E copy "')
- else:
- out.write(' COMMAND ${CMAKE_COMMAND} -E copy_directory "')
- out.write(abs_src_path)
- out.write('" "')
- out.write(CMakeStringEscape(dst))
- out.write('"\n')
- out.write(' DEPENDS ')
- for sources_type_name in sources.values():
- WriteVariable(out, sources_type_name, ' ')
- out.write('\n')
- out.write(' WORKING_DIRECTORY "')
- out.write(CMakeStringEscape(project.build_path))
- out.write('"\n')
- out.write(' COMMENT "Copy ${target}"\n')
- out.write(' VERBATIM)\n')
- synthetic_dependencies.add(outputs_name)
- def WriteCompilerFlags(out, target, project, sources):
- # Hack, set linker language to c if no c or cxx files present.
- if not 'c' in sources and not 'cxx' in sources:
- SetCurrentTargetProperty(out, 'LINKER_LANGUAGE', ['C'])
- # Mark uncompiled sources as uncompiled.
- if 'input' in sources:
- SetFilesProperty(out, sources['input'], 'HEADER_FILE_ONLY', ('True',), '')
- if 'other' in sources:
- SetFilesProperty(out, sources['other'], 'HEADER_FILE_ONLY', ('True',), '')
- # Mark object sources as linkable.
- if 'obj' in sources:
- SetFilesProperty(out, sources['obj'], 'EXTERNAL_OBJECT', ('True',), '')
- # TODO: 'output_name', 'output_dir', 'output_extension'
- # This includes using 'source_outputs' to direct compiler output.
- # Includes
- includes = target.properties.get('include_dirs', [])
- if includes:
- out.write('set_property(TARGET "${target}" ')
- out.write('APPEND PROPERTY INCLUDE_DIRECTORIES')
- for include_dir in includes:
- out.write('\n "')
- out.write(project.GetAbsolutePath(include_dir))
- out.write('"')
- out.write(')\n')
- # Defines
- defines = target.properties.get('defines', [])
- if defines:
- SetCurrentTargetProperty(out, 'COMPILE_DEFINITIONS', defines, ';')
- # Compile flags
- # "arflags", "asmflags", "cflags",
- # "cflags_c", "clfags_cc", "cflags_objc", "clfags_objcc"
- # CMake does not have per target lang compile flags.
- # TODO: $<$<COMPILE_LANGUAGE:CXX>:cflags_cc style generator expression.
- # http://public.kitware.com/Bug/view.php?id=14857
- flags = []
- flags.extend(target.properties.get('cflags', []))
- cflags_asm = target.properties.get('asmflags', [])
- cflags_c = target.properties.get('cflags_c', [])
- cflags_cxx = target.properties.get('cflags_cc', [])
- cflags_objc = cflags_c[:]
- cflags_objc.extend(target.properties.get('cflags_objc', []))
- cflags_objcc = cflags_cxx[:]
- cflags_objcc.extend(target.properties.get('cflags_objcc', []))
- if 'c' in sources and not any(k in sources for k in ('asm', 'cxx', 'objc', 'objcc')):
- flags.extend(cflags_c)
- elif 'cxx' in sources and not any(k in sources for k in ('asm', 'c', 'objc', 'objcc')):
- flags.extend(cflags_cxx)
- elif 'objc' in sources and not any(k in sources for k in ('asm', 'c', 'cxx', 'objcc')):
- flags.extend(cflags_objc)
- elif 'objcc' in sources and not any(k in sources for k in ('asm', 'c', 'cxx', 'objc')):
- flags.extend(cflags_objcc)
- else:
- # TODO: This is broken, one cannot generally set properties on files,
- # as other targets may require different properties on the same files.
- if 'asm' in sources and cflags_asm:
- SetFilesProperty(out, sources['asm'], 'COMPILE_FLAGS', cflags_asm, ' ')
- if 'c' in sources and cflags_c:
- SetFilesProperty(out, sources['c'], 'COMPILE_FLAGS', cflags_c, ' ')
- if 'cxx' in sources and cflags_cxx:
- SetFilesProperty(out, sources['cxx'], 'COMPILE_FLAGS', cflags_cxx, ' ')
- if 'objc' in sources and cflags_objc:
- SetFilesProperty(out, sources['objc'], 'COMPILE_FLAGS', cflags_objc, ' ')
- if 'objcc' in sources and cflags_objcc:
- SetFilesProperty(out, sources['objcc'], 'COMPILE_FLAGS', cflags_objcc, ' ')
- if flags:
- SetCurrentTargetProperty(out, 'COMPILE_FLAGS', flags, ' ')
- # Linker flags
- ldflags = target.properties.get('ldflags', [])
- if ldflags:
- SetCurrentTargetProperty(out, 'LINK_FLAGS', ldflags, ' ')
- gn_target_types_that_absorb_objects = (
- 'executable',
- 'loadable_module',
- 'shared_library',
- 'static_library'
- )
- def WriteSourceVariables(out, target, project):
- # gn separates the sheep from the goats based on file extensions.
- # A full separation is done here because of flag handing (see Compile flags).
- source_types = {'cxx':[], 'c':[], 'asm':[], 'objc':[], 'objcc':[],
- 'obj':[], 'obj_target':[], 'input':[], 'other':[]}
- all_sources = target.properties.get('sources', [])
- # As of cmake 3.11 add_library must have sources. If there are
- # no sources, add empty.cpp as the file to compile.
- if len(all_sources) == 0:
- all_sources.append(posixpath.join(project.build_path, 'empty.cpp'))
- # TODO .def files on Windows
- for source in all_sources:
- _, ext = posixpath.splitext(source)
- source_abs_path = project.GetAbsolutePath(source)
- source_types[source_file_types.get(ext, 'other')].append(source_abs_path)
- for input_path in target.properties.get('inputs', []):
- input_abs_path = project.GetAbsolutePath(input_path)
- source_types['input'].append(input_abs_path)
- # OBJECT library dependencies need to be listed as sources.
- # Only executables and non-OBJECT libraries may reference an OBJECT library.
- # https://gitlab.kitware.com/cmake/cmake/issues/14778
- if target.gn_type in gn_target_types_that_absorb_objects:
- object_dependencies = set()
- project.GetObjectSourceDependencies(target.gn_name, object_dependencies)
- for dependency in object_dependencies:
- cmake_dependency_name = project.GetCMakeTargetName(dependency)
- obj_target_sources = '$<TARGET_OBJECTS:' + cmake_dependency_name + '>'
- source_types['obj_target'].append(obj_target_sources)
- sources = {}
- for source_type, sources_of_type in source_types.items():
- if sources_of_type:
- sources[source_type] = '${target}__' + source_type + '_srcs'
- SetVariableList(out, sources[source_type], sources_of_type)
- return sources
- def WriteTarget(out, target, project):
- out.write('\n#')
- out.write(target.gn_name)
- out.write('\n')
- if target.cmake_type is None:
- print ('Target %s has unknown target type %s, skipping.' %
- ( target.gn_name, target.gn_type ) )
- return
- SetVariable(out, 'target', target.cmake_name)
- sources = WriteSourceVariables(out, target, project)
- synthetic_dependencies = set()
- if target.gn_type == 'action':
- WriteAction(out, target, project, sources, synthetic_dependencies)
- if target.gn_type == 'action_foreach':
- WriteActionForEach(out, target, project, sources, synthetic_dependencies)
- if target.gn_type == 'copy':
- WriteCopy(out, target, project, sources, synthetic_dependencies)
- out.write(target.cmake_type.command)
- out.write('("${target}"')
- if target.cmake_type.modifier is not None:
- out.write(' ')
- out.write(target.cmake_type.modifier)
- for sources_type_name in sources.values():
- WriteVariable(out, sources_type_name, ' ')
- if synthetic_dependencies:
- out.write(' DEPENDS')
- for synthetic_dependencie in synthetic_dependencies:
- WriteVariable(out, synthetic_dependencie, ' ')
- out.write(')\n')
- if target.cmake_type.command != 'add_custom_target':
- WriteCompilerFlags(out, target, project, sources)
- libraries = set()
- nonlibraries = set()
- dependencies = set(target.properties.get('deps', []))
- # Transitive OBJECT libraries are in sources.
- # Those sources are dependent on the OBJECT library dependencies.
- # Those sources cannot bring in library dependencies.
- object_dependencies = set()
- if target.gn_type != 'source_set':
- project.GetObjectLibraryDependencies(target.gn_name, object_dependencies)
- for object_dependency in object_dependencies:
- dependencies.update(project.targets.get(object_dependency).get('deps', []))
- for dependency in dependencies:
- gn_dependency_type = project.targets.get(dependency, {}).get('type', None)
- cmake_dependency_type = cmake_target_types.get(gn_dependency_type, None)
- cmake_dependency_name = project.GetCMakeTargetName(dependency)
- if cmake_dependency_type.command != 'add_library':
- nonlibraries.add(cmake_dependency_name)
- elif cmake_dependency_type.modifier != 'OBJECT':
- if target.cmake_type.is_linkable:
- libraries.add(cmake_dependency_name)
- else:
- nonlibraries.add(cmake_dependency_name)
- # Non-library dependencies.
- if nonlibraries:
- out.write('add_dependencies("${target}"')
- for nonlibrary in nonlibraries:
- out.write('\n "')
- out.write(nonlibrary)
- out.write('"')
- out.write(')\n')
- # Non-OBJECT library dependencies.
- external_libraries = target.properties.get('libs', [])
- if target.cmake_type.is_linkable and (external_libraries or libraries):
- library_dirs = target.properties.get('lib_dirs', [])
- if library_dirs:
- SetVariableList(out, '${target}__library_directories', library_dirs)
- system_libraries = []
- for external_library in external_libraries:
- if '/' in external_library:
- libraries.add(project.GetAbsolutePath(external_library))
- else:
- if external_library.endswith('.framework'):
- external_library = external_library[:-len('.framework')]
- system_library = 'library__' + external_library
- if library_dirs:
- system_library = system_library + '__for_${target}'
- out.write('find_library("')
- out.write(CMakeStringEscape(system_library))
- out.write('" "')
- out.write(CMakeStringEscape(external_library))
- out.write('"')
- if library_dirs:
- out.write(' PATHS "')
- WriteVariable(out, '${target}__library_directories')
- out.write('"')
- out.write(')\n')
- system_libraries.append(system_library)
- out.write('target_link_libraries("${target}"')
- for library in libraries:
- out.write('\n "')
- out.write(CMakeStringEscape(library))
- out.write('"')
- for system_library in system_libraries:
- WriteVariable(out, system_library, '\n "')
- out.write('"')
- out.write(')\n')
- def WriteProject(project):
- out = open(posixpath.join(project.build_path, 'CMakeLists.txt'), 'w+')
- extName = posixpath.join(project.build_path, 'CMakeLists.ext')
- out.write('# Generated by gn_to_cmake.py.\n')
- out.write('cmake_minimum_required(VERSION 2.8.8 FATAL_ERROR)\n')
- out.write('cmake_policy(VERSION 2.8.8)\n\n')
- out.write('file(WRITE "')
- out.write(CMakeStringEscape(posixpath.join(project.build_path, "empty.cpp")))
- out.write('")\n')
- # Update the gn generated ninja build.
- # If a build file has changed, this will update CMakeLists.ext if
- # gn gen out/config --ide=json --json-ide-script=../../gn/gn_to_cmake.py
- # style was used to create this config.
- out.write('execute_process(COMMAND\n')
- out.write(' ninja -C "')
- out.write(CMakeStringEscape(project.build_path))
- out.write('" build.ninja\n')
- out.write(' RESULT_VARIABLE ninja_result)\n')
- out.write('if (ninja_result)\n')
- out.write(' message(WARNING ')
- out.write('"Regeneration failed running ninja: ${ninja_result}")\n')
- out.write('endif()\n')
- out.write('include("')
- out.write(CMakeStringEscape(extName))
- out.write('")\n')
- out.close()
- out = open(extName, 'w+')
- out.write('# Generated by gn_to_cmake.py.\n')
- out.write('cmake_minimum_required(VERSION 2.8.8 FATAL_ERROR)\n')
- out.write('cmake_policy(VERSION 2.8.8)\n')
- # The following appears to be as-yet undocumented.
- # http://public.kitware.com/Bug/view.php?id=8392
- out.write('enable_language(ASM)\n\n')
- # ASM-ATT does not support .S files.
- # output.write('enable_language(ASM-ATT)\n')
- # Current issues with automatic re-generation:
- # The gn generated build.ninja target uses build.ninja.d
- # but build.ninja.d does not contain the ide or gn.
- # Currently the ide is not run if the project.json file is not changed
- # but the ide needs to be run anyway if it has itself changed.
- # This can be worked around by deleting the project.json file.
- out.write('file(READ "')
- gn_deps_file = posixpath.join(project.build_path, 'build.ninja.d')
- out.write(CMakeStringEscape(gn_deps_file))
- out.write('" "gn_deps_string" OFFSET ')
- out.write(str(len('build.ninja: ')))
- out.write(')\n')
- # One would think this would need to worry about escaped spaces
- # but gn doesn't escape spaces here (it generates invalid .d files).
- out.write('string(REPLACE " " ";" "gn_deps" ${gn_deps_string})\n')
- out.write('foreach("gn_dep" ${gn_deps})\n')
- out.write(' configure_file("')
- out.write(CMakeStringEscape(project.build_path))
- out.write('${gn_dep}" "CMakeLists.devnull" COPYONLY)\n')
- out.write('endforeach("gn_dep")\n')
- out.write('list(APPEND other_deps "')
- out.write(CMakeStringEscape(os.path.abspath(__file__)))
- out.write('")\n')
- out.write('foreach("other_dep" ${other_deps})\n')
- out.write(' configure_file("${other_dep}" "CMakeLists.devnull" COPYONLY)\n')
- out.write('endforeach("other_dep")\n')
- for target_name in project.targets.keys():
- out.write('\n')
- WriteTarget(out, Target(target_name, project), project)
- def main():
- if len(sys.argv) != 2:
- print('Usage: ' + sys.argv[0] + ' <json_file_name>')
- exit(1)
- json_path = sys.argv[1]
- project = None
- with open(json_path, 'r') as json_file:
- project = json.loads(json_file.read())
- WriteProject(Project(project))
- if __name__ == "__main__":
- main()
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