You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
2.6 KiB
Python
86 lines
2.6 KiB
Python
#!/usr/bin/env python
|
|
# encoding: utf-8
|
|
# Christoph Koke, 2013
|
|
|
|
"""
|
|
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, Task
|
|
|
|
Task.Task.keep_last_cmd = True
|
|
|
|
@TaskGen.feature('c', 'cxx')
|
|
@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)
|
|
|
|
tup = tuple(y for y in [Task.classes.get(x) for x in ('c', 'cxx')] if y)
|
|
for task in getattr(self, 'compiled_tasks', []):
|
|
if isinstance(task, tup):
|
|
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)
|
|
entry = {
|
|
"directory": directory,
|
|
"arguments": cmd,
|
|
"file": filename,
|
|
}
|
|
clang_db[filename] = entry
|
|
root = list(clang_db.values())
|
|
database_file.write(json.dumps(root, indent=2))
|
|
|
|
# Override the runnable_status function to do a dummy/dry run when the file doesn't need to be compiled.
|
|
# This will make sure compile_commands.json is always fully up to date.
|
|
# Previously you could end up with a partial compile_commands.json if the build failed.
|
|
for x in ('c', 'cxx'):
|
|
if x not in Task.classes:
|
|
continue
|
|
|
|
t = Task.classes[x]
|
|
|
|
def runnable_status(self):
|
|
def exec_command(cmd, **kw):
|
|
pass
|
|
|
|
run_status = self.old_runnable_status()
|
|
if run_status == Task.SKIP_ME:
|
|
setattr(self, 'old_exec_command', getattr(self, 'exec_command', None))
|
|
setattr(self, 'exec_command', exec_command)
|
|
self.run()
|
|
setattr(self, 'exec_command', getattr(self, 'old_exec_command', None))
|
|
return run_status
|
|
|
|
setattr(t, 'old_runnable_status', getattr(t, 'runnable_status', None))
|
|
setattr(t, 'runnable_status', runnable_status)
|