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Diffstat (limited to 'deps/gyp/pylib/gyp/MSVSUtil.py')
| -rw-r--r-- | deps/gyp/pylib/gyp/MSVSUtil.py | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/deps/gyp/pylib/gyp/MSVSUtil.py b/deps/gyp/pylib/gyp/MSVSUtil.py new file mode 100644 index 0000000000..62e8d260d4 --- /dev/null +++ b/deps/gyp/pylib/gyp/MSVSUtil.py @@ -0,0 +1,267 @@ +# Copyright (c) 2013 Google Inc. All rights reserved. +# Use of this source code is governed by a BSD-style license that can be +# found in the LICENSE file. + +"""Utility functions shared amongst the Windows generators.""" + +import copy +import os + + +_TARGET_TYPE_EXT = { + 'executable': '.exe', + 'loadable_module': '.dll', + 'shared_library': '.dll', +} + + +def _GetLargePdbShimCcPath(): + """Returns the path of the large_pdb_shim.cc file.""" + this_dir = os.path.abspath(os.path.dirname(__file__)) + src_dir = os.path.abspath(os.path.join(this_dir, '..', '..')) + win_data_dir = os.path.join(src_dir, 'data', 'win') + large_pdb_shim_cc = os.path.join(win_data_dir, 'large-pdb-shim.cc') + return large_pdb_shim_cc + + +def _DeepCopySomeKeys(in_dict, keys): + """Performs a partial deep-copy on |in_dict|, only copying the keys in |keys|. + + Arguments: + in_dict: The dictionary to copy. + keys: The keys to be copied. If a key is in this list and doesn't exist in + |in_dict| this is not an error. + Returns: + The partially deep-copied dictionary. + """ + d = {} + for key in keys: + if key not in in_dict: + continue + d[key] = copy.deepcopy(in_dict[key]) + return d + + +def _SuffixName(name, suffix): + """Add a suffix to the end of a target. + + Arguments: + name: name of the target (foo#target) + suffix: the suffix to be added + Returns: + Target name with suffix added (foo_suffix#target) + """ + parts = name.rsplit('#', 1) + parts[0] = '%s_%s' % (parts[0], suffix) + return '#'.join(parts) + + +def _ShardName(name, number): + """Add a shard number to the end of a target. + + Arguments: + name: name of the target (foo#target) + number: shard number + Returns: + Target name with shard added (foo_1#target) + """ + return _SuffixName(name, str(number)) + + +def ShardTargets(target_list, target_dicts): + """Shard some targets apart to work around the linkers limits. + + Arguments: + target_list: List of target pairs: 'base/base.gyp:base'. + target_dicts: Dict of target properties keyed on target pair. + Returns: + Tuple of the new sharded versions of the inputs. + """ + # Gather the targets to shard, and how many pieces. + targets_to_shard = {} + for t in target_dicts: + shards = int(target_dicts[t].get('msvs_shard', 0)) + if shards: + targets_to_shard[t] = shards + # Shard target_list. + new_target_list = [] + for t in target_list: + if t in targets_to_shard: + for i in range(targets_to_shard[t]): + new_target_list.append(_ShardName(t, i)) + else: + new_target_list.append(t) + # Shard target_dict. + new_target_dicts = {} + for t in target_dicts: + if t in targets_to_shard: + for i in range(targets_to_shard[t]): + name = _ShardName(t, i) + new_target_dicts[name] = copy.copy(target_dicts[t]) + new_target_dicts[name]['target_name'] = _ShardName( + new_target_dicts[name]['target_name'], i) + sources = new_target_dicts[name].get('sources', []) + new_sources = [] + for pos in range(i, len(sources), targets_to_shard[t]): + new_sources.append(sources[pos]) + new_target_dicts[name]['sources'] = new_sources + else: + new_target_dicts[t] = target_dicts[t] + # Shard dependencies. + for t in new_target_dicts: + dependencies = copy.copy(new_target_dicts[t].get('dependencies', [])) + new_dependencies = [] + for d in dependencies: + if d in targets_to_shard: + for i in range(targets_to_shard[d]): + new_dependencies.append(_ShardName(d, i)) + else: + new_dependencies.append(d) + new_target_dicts[t]['dependencies'] = new_dependencies + + return (new_target_list, new_target_dicts) + + +def _GetPdbPath(target_dict, config_name, vars): + """Returns the path to the PDB file that will be generated by a given + configuration. + + The lookup proceeds as follows: + - Look for an explicit path in the VCLinkerTool configuration block. + - Look for an 'msvs_large_pdb_path' variable. + - Use '<(PRODUCT_DIR)/<(product_name).(exe|dll).pdb' if 'product_name' is + specified. + - Use '<(PRODUCT_DIR)/<(target_name).(exe|dll).pdb'. + + Arguments: + target_dict: The target dictionary to be searched. + config_name: The name of the configuration of interest. + vars: A dictionary of common GYP variables with generator-specific values. + Returns: + The path of the corresponding PDB file. + """ + config = target_dict['configurations'][config_name] + msvs = config.setdefault('msvs_settings', {}) + + linker = msvs.get('VCLinkerTool', {}) + + pdb_path = linker.get('ProgramDatabaseFile') + if pdb_path: + return pdb_path + + variables = target_dict.get('variables', {}) + pdb_path = variables.get('msvs_large_pdb_path', None) + if pdb_path: + return pdb_path + + + pdb_base = target_dict.get('product_name', target_dict['target_name']) + pdb_base = '%s%s.pdb' % (pdb_base, _TARGET_TYPE_EXT[target_dict['type']]) + pdb_path = vars['PRODUCT_DIR'] + '/' + pdb_base + + return pdb_path + + +def InsertLargePdbShims(target_list, target_dicts, vars): + """Insert a shim target that forces the linker to use 4KB pagesize PDBs. + + This is a workaround for targets with PDBs greater than 1GB in size, the + limit for the 1KB pagesize PDBs created by the linker by default. + + Arguments: + target_list: List of target pairs: 'base/base.gyp:base'. + target_dicts: Dict of target properties keyed on target pair. + vars: A dictionary of common GYP variables with generator-specific values. + Returns: + Tuple of the shimmed version of the inputs. + """ + # Determine which targets need shimming. + targets_to_shim = [] + for t in target_dicts: + target_dict = target_dicts[t] + + # We only want to shim targets that have msvs_large_pdb enabled. + if not int(target_dict.get('msvs_large_pdb', 0)): + continue + # This is intended for executable, shared_library and loadable_module + # targets where every configuration is set up to produce a PDB output. + # If any of these conditions is not true then the shim logic will fail + # below. + targets_to_shim.append(t) + + large_pdb_shim_cc = _GetLargePdbShimCcPath() + + for t in targets_to_shim: + target_dict = target_dicts[t] + target_name = target_dict.get('target_name') + + base_dict = _DeepCopySomeKeys(target_dict, + ['configurations', 'default_configuration', 'toolset']) + + # This is the dict for copying the source file (part of the GYP tree) + # to the intermediate directory of the project. This is necessary because + # we can't always build a relative path to the shim source file (on Windows + # GYP and the project may be on different drives), and Ninja hates absolute + # paths (it ends up generating the .obj and .obj.d alongside the source + # file, polluting GYPs tree). + copy_suffix = 'large_pdb_copy' + copy_target_name = target_name + '_' + copy_suffix + full_copy_target_name = _SuffixName(t, copy_suffix) + shim_cc_basename = os.path.basename(large_pdb_shim_cc) + shim_cc_dir = vars['SHARED_INTERMEDIATE_DIR'] + '/' + copy_target_name + shim_cc_path = shim_cc_dir + '/' + shim_cc_basename + copy_dict = copy.deepcopy(base_dict) + copy_dict['target_name'] = copy_target_name + copy_dict['type'] = 'none' + copy_dict['sources'] = [ large_pdb_shim_cc ] + copy_dict['copies'] = [{ + 'destination': shim_cc_dir, + 'files': [ large_pdb_shim_cc ] + }] + + # This is the dict for the PDB generating shim target. It depends on the + # copy target. + shim_suffix = 'large_pdb_shim' + shim_target_name = target_name + '_' + shim_suffix + full_shim_target_name = _SuffixName(t, shim_suffix) + shim_dict = copy.deepcopy(base_dict) + shim_dict['target_name'] = shim_target_name + shim_dict['type'] = 'static_library' + shim_dict['sources'] = [ shim_cc_path ] + shim_dict['dependencies'] = [ full_copy_target_name ] + + # Set up the shim to output its PDB to the same location as the final linker + # target. + for config_name, config in shim_dict.get('configurations').iteritems(): + pdb_path = _GetPdbPath(target_dict, config_name, vars) + + # A few keys that we don't want to propagate. + for key in ['msvs_precompiled_header', 'msvs_precompiled_source', 'test']: + config.pop(key, None) + + msvs = config.setdefault('msvs_settings', {}) + + # Update the compiler directives in the shim target. + compiler = msvs.setdefault('VCCLCompilerTool', {}) + compiler['DebugInformationFormat'] = '3' + compiler['ProgramDataBaseFileName'] = pdb_path + + # Set the explicit PDB path in the appropriate configuration of the + # original target. + config = target_dict['configurations'][config_name] + msvs = config.setdefault('msvs_settings', {}) + linker = msvs.setdefault('VCLinkerTool', {}) + linker['GenerateDebugInformation'] = 'true' + linker['ProgramDatabaseFile'] = pdb_path + + # Add the new targets. They must go to the beginning of the list so that + # the dependency generation works as expected in ninja. + target_list.insert(0, full_copy_target_name) + target_list.insert(0, full_shim_target_name) + target_dicts[full_copy_target_name] = copy_dict + target_dicts[full_shim_target_name] = shim_dict + + # Update the original target to depend on the shim target. + target_dict.setdefault('dependencies', []).append(full_shim_target_name) + + return (target_list, target_dicts)
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