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tools: add compile_commands.json gyp generator

Add a compile_commands.json generator for use with clang-based tooling.

Pass the (undocumented) -C switch to configure to make it generate the
files in out/Debug and out/Release.

PR-URL: #7986
Reviewed-By: James M Snell <jasnell@gmail.com>
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bnoordhuis authored and italoacasas committed Aug 5, 2016
1 parent 5d2ba44 commit 7e465b9c21a7114126392948025577b9adb3d6f1
Showing with 124 additions and 0 deletions.
  1. +9 −0 configure
  2. +115 −0 tools/gyp/pylib/gyp/generator/compile_commands_json.py
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@@ -474,6 +474,12 @@ parser.add_option('--without-bundled-v8',
help='do not use V8 includes from the bundled deps folder. ' +
'(This mode is not officially supported for regular applications)')
+# Create compile_commands.json in out/Debug and out/Release.
+parser.add_option('-C',
+ action='store_true',
+ dest='compile_commands_json',
+ help=optparse.SUPPRESS_HELP)
+
(options, args) = parser.parse_args()
# Expand ~ in the install prefix now, it gets written to multiple files.
@@ -1360,6 +1366,9 @@ elif flavor == 'win' and sys.platform != 'msys':
else:
gyp_args += ['-f', 'make-' + flavor]
+if options.compile_commands_json:
+ gyp_args += ['-f', 'compile_commands_json']
+
gyp_args += args
if warn.warned:
@@ -0,0 +1,115 @@
+# Copyright (c) 2016 Ben Noordhuis <info@bnoordhuis.nl>. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import gyp.common
+import gyp.xcode_emulation
+import json
+import os
+
+generator_additional_non_configuration_keys = []
+generator_additional_path_sections = []
+generator_extra_sources_for_rules = []
+generator_filelist_paths = None
+generator_supports_multiple_toolsets = True
+generator_wants_sorted_dependencies = False
+
+# Lifted from make.py. The actual values don't matter much.
+generator_default_variables = {
+ 'CONFIGURATION_NAME': '$(BUILDTYPE)',
+ 'EXECUTABLE_PREFIX': '',
+ 'EXECUTABLE_SUFFIX': '',
+ 'INTERMEDIATE_DIR': '$(obj).$(TOOLSET)/$(TARGET)/geni',
+ 'PRODUCT_DIR': '$(builddir)',
+ 'RULE_INPUT_DIRNAME': '%(INPUT_DIRNAME)s',
+ 'RULE_INPUT_EXT': '$(suffix $<)',
+ 'RULE_INPUT_NAME': '$(notdir $<)',
+ 'RULE_INPUT_PATH': '$(abspath $<)',
+ 'RULE_INPUT_ROOT': '%(INPUT_ROOT)s',
+ 'SHARED_INTERMEDIATE_DIR': '$(obj)/gen',
+ 'SHARED_LIB_PREFIX': 'lib',
+ 'STATIC_LIB_PREFIX': 'lib',
+ 'STATIC_LIB_SUFFIX': '.a',
+}
+
+
+def IsMac(params):
+ return 'mac' == gyp.common.GetFlavor(params)
+
+
+def CalculateVariables(default_variables, params):
+ default_variables.setdefault('OS', gyp.common.GetFlavor(params))
+
+
+def AddCommandsForTarget(cwd, target, params, per_config_commands):
+ output_dir = params['generator_flags']['output_dir']
+ for configuration_name, configuration in target['configurations'].iteritems():
+ builddir_name = os.path.join(output_dir, configuration_name)
+
+ if IsMac(params):
+ xcode_settings = gyp.xcode_emulation.XcodeSettings(target)
+ cflags = xcode_settings.GetCflags(configuration_name)
+ cflags_c = xcode_settings.GetCflagsC(configuration_name)
+ cflags_cc = xcode_settings.GetCflagsCC(configuration_name)
+ else:
+ cflags = configuration.get('cflags', [])
+ cflags_c = configuration.get('cflags_c', [])
+ cflags_cc = configuration.get('cflags_cc', [])
+
+ cflags_c = cflags + cflags_c
+ cflags_cc = cflags + cflags_cc
+
+ defines = configuration.get('defines', [])
+ defines = ['-D' + s for s in defines]
+
+ # TODO(bnoordhuis) Handle generated source files.
+ sources = target.get('sources', [])
+ sources = [s for s in sources if s.endswith('.c') or s.endswith('.cc')]
+
+ def resolve(filename):
+ return os.path.abspath(os.path.join(cwd, filename))
+
+ # TODO(bnoordhuis) Handle generated header files.
+ include_dirs = configuration.get('include_dirs', [])
+ include_dirs = [s for s in include_dirs if not s.startswith('$(obj)')]
+ includes = ['-I' + resolve(s) for s in include_dirs]
+
+ defines = gyp.common.EncodePOSIXShellList(defines)
+ includes = gyp.common.EncodePOSIXShellList(includes)
+ cflags_c = gyp.common.EncodePOSIXShellList(cflags_c)
+ cflags_cc = gyp.common.EncodePOSIXShellList(cflags_cc)
+
+ commands = per_config_commands.setdefault(configuration_name, [])
+ for source in sources:
+ file = resolve(source)
+ isc = source.endswith('.c')
+ cc = 'cc' if isc else 'c++'
+ cflags = cflags_c if isc else cflags_cc
+ command = ' '.join((cc, defines, includes, cflags,
+ '-c', gyp.common.EncodePOSIXShellArgument(file)))
+ commands.append(dict(command=command, directory=output_dir, file=file))
+
+
+def GenerateOutput(target_list, target_dicts, data, params):
+ per_config_commands = {}
+ for qualified_target, target in target_dicts.iteritems():
+ build_file, target_name, toolset = (
+ gyp.common.ParseQualifiedTarget(qualified_target))
+ if IsMac(params):
+ settings = data[build_file]
+ gyp.xcode_emulation.MergeGlobalXcodeSettingsToSpec(settings, target)
+ cwd = os.path.dirname(build_file)
+ AddCommandsForTarget(cwd, target, params, per_config_commands)
+
+ output_dir = params['generator_flags']['output_dir']
+ for configuration_name, commands in per_config_commands.iteritems():
+ filename = os.path.join(output_dir,
+ configuration_name,
+ 'compile_commands.json')
+ gyp.common.EnsureDirExists(filename)
+ fp = open(filename, 'w')
+ json.dump(commands, fp=fp, indent=0, check_circular=False)
+
+
+def PerformBuild(data, configurations, params):
+ pass

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