-- 049ac45508e335c6f010f2d28d71016b9fa65b4e by Derek Mauro <dmauro@google.com>: Fix librt detection PiperOrigin-RevId: 280207723 -- 6382c3a9fb2643af9dc031f92ca846c4a78e249c by Andy Getzendanner <durandal@google.com>: Fix Conan builds Import of https://github.com/abseil/abseil-cpp/pull/400 PiperOrigin-RevId: 280025424 -- aebcd52b1686ac82663a8d0193b60d0122a43372 by Samuel Benzaquen <sbenza@google.com>: Enable the assertion in the iterator's operator== and operator!= PiperOrigin-RevId: 279998951 -- 5b61d909e2159ac6fd45e0e456818db1e725ecd1 by Derek Mauro <dmauro@google.com>: Add best effort support for compiling much of Abseil with MinGW. This involves disabling ABSL_ATTRIBUTE_WEAK and adding link flags. A change to CCTZ is still necessary. Tests were not run yet, but most of them now build. PiperOrigin-RevId: 279966541 -- 4336f8b10cff906e2defdd7d1d449cde4907da5d by Abseil Team <absl-team@google.com>: Add comments and relax memory orders in base_internal::CallOnceImpl. Add a comment to document the memory order guarantee if base_internal::SpinLockWait() is called and returns kOnceDone. Add a comment for the load/store sequence in base_internal::CallOnceImpl based on Mike Burrows' explanation. The atomic load of 'control' in the #ifndef NDEBUG block does not need std::memory_order_acquire. It can use std::memory_order_relaxed. The atomic compare_exchange_strong of 'control' does not need std::memory_order_acquire in the success case. It can use std::memory_order_relaxed. PiperOrigin-RevId: 279814155 -- 407de3a5e9af957cded54a136ca0468bde620d4d by Abseil Team <absl-team@google.com>: Added a script to generate abseil.podspec from all BUILD.bazel files automatically. PiperOrigin-RevId: 279811441 -- 26139497d4a363d6c7bc989c554da593e8819a07 by Derek Mauro <dmauro@google.com>: Add missing copyright and Apache License to //absl/functional/BUILD.bazel PiperOrigin-RevId: 279795227 -- 98ed625b02af6e5834edf52a920d8ca2dab4cd90 by Matt Kulukundis <kfm@google.com>: Switch the implementation of hashtablez to *only* work on platforms that have a PER_THREAD_TLS. The old case is very slow (global mutex) and nobody collects data from that configuration anyway. PiperOrigin-RevId: 279775149 -- 07225900ef672c005c38f467ad3f92f38d0922b3 by Derek Mauro <dmauro@google.com>: Remove the minumum glibc version check PiperOrigin-RevId: 279750412 -- ec09956a951b4f52228ecc81968b8db7ae19ed15 by Derek Mauro <dmauro@google.com>: CMake only: link with -lrt to support older glibc versions PiperOrigin-RevId: 279741661 -- 97b113fb2e8246f6152c36330ba13793b37154b6 by Xiaoyi Zhang <zhangxy@google.com>: Internal change. PiperOrigin-RevId: 279390188 -- ca8f72f2721546cc9b01bd01b2ea144962e6e0c5 by Andy Getzendanner <durandal@google.com>: Expose PutTwoDigits for internal use within Abseil. PiperOrigin-RevId: 279374239 -- 14c6384cc03bbdfdefd2e4b635f104af5dd7e026 by Derek Mauro <dmauro@google.com>: Remove log_severity sources from the base target. They are already compiled as part of a separate library. PiperOrigin-RevId: 279372619 -- 3c5d926c718f8bf394e3bee87b6ba8d94601e0d3 by Abseil Team <absl-team@google.com>: s/indepdent/independent/g in SimpleAtof's documentation. PiperOrigin-RevId: 279350836 -- de2c44be8a8edf9efa1fe2007cba3564f3e5b0b8 by Abseil Team <absl-team@google.com>: Internal change PiperOrigin-RevId: 279346990 -- 2ba078341423fcf6d0ba5ca1831f86570a26e615 by Samuel Benzaquen <sbenza@google.com>: Add hash support for std::wstring, std::u16string and std::u32string. PiperOrigin-RevId: 279320672 -- 3272d3ffcfa55283a04f90e5868701912da95ef7 by Andy Soffer <asoffer@google.com>: Removing a bunch of __restricts that amount to no performance differences. One of these is the cause of https://github.com/abseil/abseil-cpp/issues/396. In particular, in one of the Vector128Store functions, restricts on two pointers that were indeed aliased seems to be the root cause of the issues. Closes #396 PiperOrigin-RevId: 279318999 -- 342f338ab31cc24344d5de8f28cf455bbb629a17 by Jorg Brown <jorg@google.com>: Support uint128 in SimpleAtoi PiperOrigin-RevId: 279234038 -- 81cb0a04cf2dc4515d303679fc60968712191571 by Derek Mauro <dmauro@google.com>: Change the check for futex availability to support older Linux systems PiperOrigin-RevId: 279147079 -- cb4ca4aa4c8d2d710a5d483c56c4ce4f979e14b1 by Abseil Team <absl-team@google.com>: Add IWYU pragma: export for int128 .inc files. PiperOrigin-RevId: 279107098 -- b8df86ef610c366729f07326c726f3e34817b4dd by Abseil Team <absl-team@google.com>: An optimization for Waiter::Post() in the SEM waiter mode. Like the FUTEX waiter mode, Waiter::Post() only needs to call Poke() if it incremented the atomic variable from 0. PiperOrigin-RevId: 279086133 GitOrigin-RevId: 049ac45508e335c6f010f2d28d71016b9fa65b4e Change-Id: I4c1a4073fff62cb6a1fcb1c104aa7d62dad588c2pull/404/head
Abseil Team
5 years ago
committed by
Andy Getz
parent
85092b4b64
commit
fa8c75182f
26 changed files with 503 additions and 117 deletions
@ -0,0 +1,247 @@ |
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#!/usr/bin/env python3 |
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# -*- coding: utf-8 -*- |
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"""This script generates abseil.podspec from all BUILD.bazel files. |
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|
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This is expected to run on abseil git repository with Bazel 1.0 on Linux. |
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It recursively analyzes BUILD.bazel files using query command of Bazel to |
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dump its build rules in XML format. From these rules, it constructs podspec |
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structure. |
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""" |
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|
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import argparse |
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import collections |
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import os |
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import re |
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import subprocess |
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import xml.etree.ElementTree |
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|
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# Template of root podspec. |
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SPEC_TEMPLATE = """ |
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# This file has been automatically generated from a script. |
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# Please make modifications to `abseil.podspec.gen.py` instead. |
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Pod::Spec.new do |s| |
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s.name = 'abseil' |
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s.version = '${version}' |
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s.summary = 'Abseil Common Libraries (C++) from Google' |
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s.homepage = 'https://abseil.io' |
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s.license = 'Apache License, Version 2.0' |
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s.authors = { 'Abseil Team' => 'abseil-io@googlegroups.com' } |
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s.source = { |
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:git => 'https://github.com/abseil/abseil-cpp.git', |
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:tag => '${tag}', |
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} |
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s.module_name = 'absl' |
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s.header_mappings_dir = 'absl' |
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s.header_dir = 'absl' |
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s.libraries = 'c++' |
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s.compiler_flags = '-Wno-everything' |
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s.pod_target_xcconfig = { |
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'USER_HEADER_SEARCH_PATHS' => '$(inherited) "$(PODS_TARGET_SRCROOT)"', |
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'USE_HEADERMAP' => 'NO', |
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'ALWAYS_SEARCH_USER_PATHS' => 'NO', |
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} |
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s.ios.deployment_target = '7.0' |
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s.osx.deployment_target = '10.9' |
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s.tvos.deployment_target = '9.0' |
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s.watchos.deployment_target = '2.0' |
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""" |
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|
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# Limited platforms that abseil supports. |
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# This is mainly because of sigaltstack unavailable on watchOS. |
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LIMITED_SUPPORT_PLATFORMS = [ |
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"ios.deployment_target = '7.0'", |
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"osx.deployment_target = '10.9'", |
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] |
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|
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# Custom specification per rule. |
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CUSTOM_SPEC_MAP = { |
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"//absl/debugging:failure_signal_handler": LIMITED_SUPPORT_PLATFORMS, |
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} |
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|
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# Rule object representing the rule of Bazel BUILD. |
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Rule = collections.namedtuple( |
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"Rule", "type name package srcs hdrs textual_hdrs deps visibility testonly") |
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|
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|
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def get_elem_value(elem, name): |
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"""Returns the value of XML element with the given name.""" |
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for child in elem: |
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if child.attrib.get("name") != name: |
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continue |
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if child.tag == "string": |
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return child.attrib.get("value") |
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if child.tag == "boolean": |
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return child.attrib.get("value") == "true" |
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if child.tag == "list": |
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return [nested_child.attrib.get("value") for nested_child in child] |
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raise "Cannot recognize tag: " + child.tag |
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return None |
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|
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|
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def normalize_paths(paths): |
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"""Returns the list of normalized path.""" |
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# e.g. ["//absl/strings:dir/header.h"] -> ["absl/strings/dir/header.h"] |
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return [path.lstrip("/").replace(":", "/") for path in paths] |
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|
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|
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def parse_rule(elem, package): |
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"""Returns a rule from bazel XML rule.""" |
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return Rule( |
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type=elem.attrib["class"], |
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name=get_elem_value(elem, "name"), |
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package=package, |
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srcs=normalize_paths(get_elem_value(elem, "srcs") or []), |
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hdrs=normalize_paths(get_elem_value(elem, "hdrs") or []), |
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textual_hdrs=normalize_paths(get_elem_value(elem, "textual_hdrs") or []), |
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deps=get_elem_value(elem, "deps") or [], |
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visibility=get_elem_value(elem, "visibility") or [], |
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testonly=get_elem_value(elem, "testonly") or False) |
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|
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|
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def read_build(package): |
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"""Runs bazel query on given package file and returns all cc rules.""" |
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result = subprocess.check_output( |
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["bazel", "query", package + ":all", "--output", "xml"]) |
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root = xml.etree.ElementTree.fromstring(result) |
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return [ |
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parse_rule(elem, package) |
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for elem in root |
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if elem.tag == "rule" and elem.attrib["class"].startswith("cc_") |
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] |
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|
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|
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def collect_rules(root_path): |
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"""Collects and returns all rules from root path recursively.""" |
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rules = [] |
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for cur, _, _ in os.walk(root_path): |
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build_path = os.path.join(cur, "BUILD.bazel") |
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if os.path.exists(build_path): |
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rules.extend(read_build("//" + cur)) |
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return rules |
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|
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|
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def relevant_rule(rule): |
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"""Returns true if a given rule is relevant when generating a podspec.""" |
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return ( |
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# cc_library only (ignore cc_test, cc_binary) |
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rule.type == "cc_library" and |
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# ignore empty rule |
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(rule.hdrs + rule.textual_hdrs + rule.srcs) and |
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# ignore test-only rule |
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not rule.testonly) |
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|
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|
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def get_spec_var(depth): |
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"""Returns the name of variable for spec with given depth.""" |
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return "s" if depth == 0 else "s{}".format(depth) |
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|
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|
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def get_spec_name(label): |
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"""Converts the label of bazel rule to the name of podspec.""" |
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assert label.startswith("//absl/"), "{} doesn't start with //absl/".format( |
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label) |
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# e.g. //absl/apple/banana -> abseil/apple/banana |
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return "abseil/" + label[7:] |
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|
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def write_podspec(f, rules, args): |
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"""Writes a podspec from given rules and args.""" |
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rule_dir = build_rule_directory(rules)["abseil"] |
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# Write root part with given arguments |
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spec = re.sub(r"\$\{(\w+)\}", lambda x: args[x.group(1)], |
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SPEC_TEMPLATE).lstrip() |
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f.write(spec) |
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# Write all target rules |
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write_podspec_map(f, rule_dir, 0) |
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f.write("end\n") |
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|
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def build_rule_directory(rules): |
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"""Builds a tree-style rule directory from given rules.""" |
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rule_dir = {} |
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for rule in rules: |
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cur = rule_dir |
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for frag in get_spec_name(rule.package).split("/"): |
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cur = cur.setdefault(frag, {}) |
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cur[rule.name] = rule |
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return rule_dir |
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|
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def write_podspec_map(f, cur_map, depth): |
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"""Writes podspec from rule map recursively.""" |
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for key, value in sorted(cur_map.items()): |
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indent = " " * (depth + 1) |
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f.write("{indent}{var0}.subspec '{key}' do |{var1}|\n".format( |
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indent=indent, |
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key=key, |
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var0=get_spec_var(depth), |
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var1=get_spec_var(depth + 1))) |
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if isinstance(value, dict): |
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write_podspec_map(f, value, depth + 1) |
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else: |
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write_podspec_rule(f, value, depth + 1) |
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f.write("{indent}end\n".format(indent=indent)) |
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|
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def write_podspec_rule(f, rule, depth): |
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"""Writes podspec from given rule.""" |
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indent = " " * (depth + 1) |
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spec_var = get_spec_var(depth) |
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# Puts all files in hdrs, textual_hdrs, and srcs into source_files. |
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# Since CocoaPods treats header_files a bit differently from bazel, |
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# this won't generate a header_files field so that all source_files |
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# are considered as header files. |
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srcs = sorted(set(rule.hdrs + rule.textual_hdrs + rule.srcs)) |
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write_indented_list( |
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f, "{indent}{var}.source_files = ".format(indent=indent, var=spec_var), |
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srcs) |
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# Writes dependencies of this rule. |
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for dep in sorted(rule.deps): |
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name = get_spec_name(dep.replace(":", "/")) |
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f.write("{indent}{var}.dependency '{dep}'\n".format( |
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indent=indent, var=spec_var, dep=name)) |
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# Writes custom specification. |
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custom_spec = CUSTOM_SPEC_MAP.get(rule.package + ":" + rule.name) |
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if custom_spec: |
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for spec in custom_spec: |
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f.write("{indent}{var}.{spec}\n".format( |
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indent=indent, var=spec_var, spec=spec)) |
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|
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|
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def write_indented_list(f, leading, values): |
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"""Writes leading values in an indented style.""" |
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f.write(leading) |
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f.write((",\n" + " " * len(leading)).join("'{}'".format(v) for v in values)) |
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f.write("\n") |
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|
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def generate(args): |
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"""Generates a podspec file from all BUILD files under absl directory.""" |
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rules = filter(relevant_rule, collect_rules("absl")) |
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with open(args.output, "wt") as f: |
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write_podspec(f, rules, vars(args)) |
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|
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def main(): |
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parser = argparse.ArgumentParser( |
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description="Generates abseil.podspec from BUILD.bazel") |
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parser.add_argument( |
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"-v", "--version", help="The version of podspec", required=True) |
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parser.add_argument( |
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"-t", |
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"--tag", |
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default=None, |
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help="The name of git tag (default: version)") |
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parser.add_argument( |
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"-o", |
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"--output", |
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default="abseil.podspec", |
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help="The name of output file (default: abseil.podspec)") |
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args = parser.parse_args() |
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if args.tag is None: |
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args.tag = args.version |
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generate(args) |
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if __name__ == "__main__": |
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main() |
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