diff options
| -rw-r--r-- | waftools/clang_compilation_database.py | 67 | ||||
| -rw-r--r-- | wscript | 8 |
2 files changed, 75 insertions, 0 deletions
diff --git a/waftools/clang_compilation_database.py b/waftools/clang_compilation_database.py new file mode 100644 index 0000000000..1834767967 --- /dev/null +++ b/waftools/clang_compilation_database.py @@ -0,0 +1,67 @@ +#!/usr/bin/env python +# encoding: utf-8 +# Christoph Koke, 2013 +# Original source: waflib/extras/clang_compilation_database.py from +# waf git 15d14c7bdf2e (New BSD License) + +""" +Writes the c and cpp compile commands into build/compile_commands.json +see http://clang.llvm.org/docs/JSONCompilationDatabase.html + +Usage: + + def configure(conf): + conf.load('compiler_cxx') + ... + conf.load('clang_compilation_database') +""" + +import sys, os, json, shlex, pipes +from waflib import Logs, TaskGen +from waflib.Tools import c, cxx + +if sys.hexversion >= 0x3030000: + quote = shlex.quote +else: + quote = pipes.quote + +@TaskGen.feature('*') +@TaskGen.after_method('process_use') +def collect_compilation_db_tasks(self): + "Add a compilation database entry for compiled tasks" + try: + clang_db = self.bld.clang_compilation_database_tasks + except AttributeError: + clang_db = self.bld.clang_compilation_database_tasks = [] + self.bld.add_post_fun(write_compilation_database) + + for task in getattr(self, 'compiled_tasks', []): + if isinstance(task, (c.c, cxx.cxx)): + clang_db.append(task) + +def write_compilation_database(ctx): + "Write the clang compilation database as JSON" + database_file = ctx.bldnode.make_node('compile_commands.json') + Logs.info("Build commands will be stored in %s" % database_file.path_from(ctx.path)) + try: + root = json.load(database_file) + except IOError: + root = [] + clang_db = dict((x["file"], x) for x in root) + for task in getattr(ctx, 'clang_compilation_database_tasks', []): + try: + cmd = task.last_cmd + except AttributeError: + continue + directory = getattr(task, 'cwd', ctx.variant_dir) + f_node = task.inputs[0] + filename = os.path.relpath(f_node.abspath(), directory) + cmd = " ".join(map(quote, cmd)) + entry = { + "directory": directory, + "command": cmd, + "file": filename, + } + clang_db[filename] = entry + root = list(clang_db.values()) + database_file.write(json.dumps(root, indent=2)) @@ -84,6 +84,11 @@ build_options = [ 'name': '--test', 'desc': 'test suite (using cmocka)', 'func': check_pkg_config('cmocka >= 0.4.1'), + }, { + 'name': '--clang-database', + 'desc': 'generate a clang compilation database', + 'func': check_true, + 'default': 'disable', } ] @@ -891,6 +896,9 @@ def configure(ctx): if not ctx.dependency_satisfied('build-date'): ctx.env.CFLAGS += ['-DNO_BUILD_TIMESTAMPS'] + if ctx.dependency_satisfied('clang-database'): + ctx.load('clang_compilation_database') + ctx.store_dependencies_lists() def build(ctx): |