| #!/usr/bin/env fuchsia-vendored-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', |
| '.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', False), |
| '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): |
| out.write(' COMMAND ${CMAKE_COMMAND} -E copy "') |
| out.write(CMakeStringEscape(project.GetAbsolutePath(src))) |
| 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', []) |
| if 'c' in sources and not any(k in sources for k in ('asm', 'cxx')): |
| flags.extend(cflags_c) |
| elif 'cxx' in sources and not any(k in sources for k in ('asm', 'c')): |
| flags.extend(cflags_cxx) |
| 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 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':[], |
| '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 %s.\n' % os.path.basename(__file__)) |
| 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 %s.\n', os.path.basename(__file__)) |
| 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() |