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author | David Robillard <d@drobilla.net> | 2019-03-17 17:31:05 +0100 |
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committer | David Robillard <d@drobilla.net> | 2019-03-17 17:31:05 +0100 |
commit | 406f89271452fdb573c7e28113b1ed08ff2b4eda (patch) | |
tree | d2dcbaf61f3749f73dc7a5e10d3fc6cd5e6e129a /extras/clang_compilation_database.py | |
parent | 7983a5aae615290d04fd43cbc2752f8cf4a46d10 (diff) | |
download | suil-406f89271452fdb573c7e28113b1ed08ff2b4eda.tar.gz suil-406f89271452fdb573c7e28113b1ed08ff2b4eda.tar.bz2 suil-406f89271452fdb573c7e28113b1ed08ff2b4eda.zip |
Squashed 'waflib/' changes from 915dcb1..e7a29b6
e7a29b6 Upgrade to waf 2.0.15
8280f9d Add command for running executables from the build directory
8073c1a Make make_simple_dox() safe in case of exception
70d03b8 Avoid use of global counter hacks for configuration display
b7d689a Rewrite test framework
94deadf Automatically add options and move add_flags() to options context
f4259ee Reduce system include path noise
927b608 Automatically display configuration header
c44b8f3 Set line justification from a constant in the wscript
a48e26f Automatically detect if wscript has a test hook
ef66724 Save runtime variables in the environment
63bcbcd Clean up TestContext
b1d9505 Add ExecutionContext for setting runtime environment
387c1df Add show_diff() and test_file_equals() utilities
29d4d29 Fix in-tree library paths
9fde01f Add custom configuration context
6d3612f Add lib_path_name constant
git-subtree-dir: waflib
git-subtree-split: e7a29b6b9b2f842314244c23c14d8f8f560904e1
Diffstat (limited to 'extras/clang_compilation_database.py')
-rw-r--r-- | extras/clang_compilation_database.py | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/extras/clang_compilation_database.py b/extras/clang_compilation_database.py new file mode 100644 index 0000000..4d9b5e2 --- /dev/null +++ b/extras/clang_compilation_database.py @@ -0,0 +1,85 @@ +#!/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) |