commit e51978ee255e4f40c8d267a4d086721d036a9913 Author: Tony Aiuto Date: Wed Apr 24 13:03:22 2019 -0400 initial checkin diff --git a/CODEOWNERS b/CODEOWNERS new file mode 100644 index 0000000..a7a3ff8 --- /dev/null +++ b/CODEOWNERS @@ -0,0 +1 @@ +@aiuto @aragos @gregestren @katre diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..261eeb9 --- /dev/null +++ b/LICENSE @@ -0,0 +1,201 @@ + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. For the purposes of this definition, "submitted" + means any form of electronic, verbal, or written communication sent + to the Licensor or its representatives, including but not limited to + communication on electronic mailing lists, source code control systems, + and issue tracking systems that are managed by, or on behalf of, the + Licensor for the purpose of discussing and improving the Work, but + excluding communication that is conspicuously marked or otherwise + designated in writing by the copyright owner as "Not a Contribution." + + "Contributor" shall mean Licensor and any individual or Legal Entity + on behalf of whom a Contribution has been received by Licensor and + subsequently incorporated within the Work. + + 2. Grant of Copyright License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + copyright license to reproduce, prepare Derivative Works of, + publicly display, publicly perform, sublicense, and distribute the + Work and such Derivative Works in Source or Object form. + + 3. Grant of Patent License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + (except as stated in this section) patent license to make, have made, + use, offer to sell, sell, import, and otherwise transfer the Work, + where such license applies only to those patent claims licensable + by such Contributor that are necessarily infringed by their + Contribution(s) alone or by combination of their Contribution(s) + with the Work to which such Contribution(s) was submitted. If You + institute patent litigation against any entity (including a + cross-claim or counterclaim in a lawsuit) alleging that the Work + or a Contribution incorporated within the Work constitutes direct + or contributory patent infringement, then any patent licenses + granted to You under this License for that Work shall terminate + as of the date such litigation is filed. + + 4. Redistribution. You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + + 5. Submission of Contributions. Unless You explicitly state otherwise, + any Contribution intentionally submitted for inclusion in the Work + by You to the Licensor shall be under the terms and conditions of + this License, without any additional terms or conditions. + Notwithstanding the above, nothing herein shall supersede or modify + the terms of any separate license agreement you may have executed + with Licensor regarding such Contributions. + + 6. Trademarks. This License does not grant permission to use the trade + names, trademarks, service marks, or product names of the Licensor, + except as required for reasonable and customary use in describing the + origin of the Work and reproducing the content of the NOTICE file. + + 7. Disclaimer of Warranty. Unless required by applicable law or + agreed to in writing, Licensor provides the Work (and each + Contributor provides its Contributions) on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied, including, without limitation, any warranties or conditions + of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A + PARTICULAR PURPOSE. You are solely responsible for determining the + appropriateness of using or redistributing the Work and assume any + risks associated with Your exercise of permissions under this License. + + 8. Limitation of Liability. In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + + APPENDIX: How to apply the Apache License to your work. + + To apply the Apache License to your work, attach the following + boilerplate notice, with the fields enclosed by brackets "[]" + replaced with your own identifying information. (Don't include + the brackets!) The text should be enclosed in the appropriate + comment syntax for the file format. We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/README.md b/README.md new file mode 100644 index 0000000..70ba1a4 --- /dev/null +++ b/README.md @@ -0,0 +1,85 @@ +# [Bazel Platforms](https://bazel.build) + +This repository houses all canonical +[constraint_setting()](https://docs.bazel.build/versions/master/be/platform.html#constraint_setting)s, +[constraint_value()](https://docs.bazel.build/versions/master/be/platform.html#constraint_value)s +and +[platform()](https://docs.bazel.build/versions/master/be/platform.html#platform)s +that are universally useful across languages and Bazel projects. + +For questions or concerns please email +[bazel-discuss@googlegroups.com](mailto://bazel-discuss@googlegroups.com) + +# Motivation + +Constraints must be carefully organized to avoid fragmentation. If two different +declarations for, say, cpu=x86_64 were to exist at the same time then select() +statements and toolchain selection would stop working across languages and +projects. + +# Process + +This repository only includes truly ubiquitous constraints. + +Most common constraints -- that is settings and values that can be used across +projects - fall into specific areas like "Apple" or "Java". These are declared +in those areas' respective repositories. + +A very few constraints (such as OS and cpu) are relevant for essentially all +projects across all areas. These are what this repository is for. + +# Adding a canonical constraint value + +To add a new canonical constraint value, prepare a PR adding it to that the +appropriate BUILD file. + +Note that even global constraint values are typically area values. For example, +ios is an area value for the global setting os but belongs in the apple area. +For the PR's reviewer(s) choose an owner of this repository plus an owner of the +area repository this references.. + +A constraint value should be: + +- semantically clear, particularly in its distinctions from other values of + the same setting + +- well-named: consistent with existing values of the same setting and easy to + understand at usage sites + +- well-documented + +Remember that this value will apply for the entire Bazel community and its +semantics will be difficult to impossible to change once it starts being used. + +# Adding a canonical constraint setting + +New canonical constraint settings should be rare and well-justified. + +To add a new setting, prepare a design document according to Bazel's design +review process. This document should explain the need for a new setting and why +it belongs here vs. area-specific repositories. It should clearly explain +semantics, initial values, and criteria for adding new values. + +Once the design is approved prepare a PR for the actual change. If any values +are area-specific, include the area repositories' owners as reviewers. + +# Private changes to global constraints + +If you'd like to experiment with changes to global settings or values, you can +fork this repo for experimental purposes. But in the interest of community +health and interoperability please don't share your changes with anyone not +involved with the experiment. For wider distribution, submit a proper change +here. + +Note that you can declare constraint_values in your own repo that are members of +the global constraint_settings. This lets you "extend" global settings within +the confines of your own project. But don't do this if you expect other projects +to use these changes - this can easily lead to fragmentation conflicts. + +If you need custom constaint_settings, just declare them in your own repo. They +are, by definition, not global. + +If you really need a permanent global change and it isn't design-approved for +this repo, contact +[bazel-dev@googlegroups.com](mailto://bazel-dev@googlegroups.com) to discuss +options. diff --git a/WORKSPACE b/WORKSPACE new file mode 100644 index 0000000..f1874ea --- /dev/null +++ b/WORKSPACE @@ -0,0 +1 @@ +workspace(name = "platforms") diff --git a/cpu/BUILD b/cpu/BUILD new file mode 100644 index 0000000..03483e4 --- /dev/null +++ b/cpu/BUILD @@ -0,0 +1,43 @@ +# Standard cpu name constraint_setting and constraint_values + +package( + default_visibility = ["//visibility:public"], +) + +filegroup( + name = "srcs", + srcs = glob(["**"]), +) + +# These match values in https://github.com/bazelbuild/bazel/blob/master/src/main/java/com/google/devtools/build/lib/util/CPU.java +constraint_setting(name = "cpu") + +constraint_value( + name = "x86_32", + constraint_setting = ":cpu", +) + +constraint_value( + name = "x86_64", + constraint_setting = ":cpu", +) + +constraint_value( + name = "ppc", + constraint_setting = ":cpu", +) + +constraint_value( + name = "arm", + constraint_setting = ":cpu", +) + +constraint_value( + name = "aarch64", + constraint_setting = ":cpu", +) + +constraint_value( + name = "s390x", + constraint_setting = ":cpu", +) diff --git a/os/BUILD b/os/BUILD new file mode 100644 index 0000000..36f5bf0 --- /dev/null +++ b/os/BUILD @@ -0,0 +1,43 @@ +# Standard constraint_setting and constraint_values to be used in platforms. + +package( + default_visibility = ["//visibility:public"], +) + +filegroup( + name = "srcs", + srcs = glob(["**"]), +) + +# These match values in https://github.com/bazelbuild/bazel/blob/master/src/main/java/com/google/devtools/build/lib/util/OS.java +constraint_setting(name = "os") + +constraint_value( + name = "osx", + constraint_setting = ":os", +) + +constraint_value( + name = "ios", + constraint_setting = ":os", +) + +constraint_value( + name = "freebsd", + constraint_setting = ":os", +) + +constraint_value( + name = "android", + constraint_setting = ":os", +) + +constraint_value( + name = "linux", + constraint_setting = ":os", +) + +constraint_value( + name = "windows", + constraint_setting = ":os", +)