diff options
| -rw-r--r-- | gn/gn_to_cmake.py | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/gn/gn_to_cmake.py b/gn/gn_to_cmake.py index 30a039a54f..86906f524d 100644 --- a/gn/gn_to_cmake.py +++ b/gn/gn_to_cmake.py @@ -15,6 +15,8 @@ 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. """ @@ -606,14 +608,49 @@ def WriteProject(project): out = open(posixpath.join(project.build_path, 'CMakeLists.txt'), '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\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 ninja -C "') + out.write(CMakeStringEscape(project.build_path)) + out.write('" build.ninja)\n') + + out.write('include(CMakeLists.ext)\n') + out.close() + + out = open(posixpath.join(project.build_path, 'CMakeLists.ext'), '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') + 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" ${gn_deps})\n') + out.write(' configure_file(${gn_dep} "CMakeLists.devnull" COPYONLY)\n') + out.write('endforeach("gn_dep")\n') + for target_name in project.targets.keys(): out.write('\n') WriteTarget(out, Target(target_name, project), project) |