golang/go

build: provide a mechanism to disable architectures?

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#17,123 opened on Sep 15, 2016

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Description

For build speed & binary size reasons, I would like to run make.bash with certain architectures disabled.

(my motivation: when I'm cross-compiling an ARM toolchain from Linux for #17105, there's no need for ppc64, mips64, s390x, arm64, 386, or even amd64 in my resulting binaries)

I started a prototype in https://golang.org/cl/29230 which defines build tags like "without_ppc64", "without_386", "without_s390x", etc.

The compiler and linker were easy. I decided to wait on cmd/asm until more discussion.

What do people think of something like this?

/cc @ianlancetaylor @mdempsky @randall77 @robpike @griesemer @josharian @rsc

Contributor guide

Research direction
Review the prototype CL (https://golang.org/cl/29230) and discuss naming conventions for build tags like 'without ppc64'. Understand how make.bash handles architecture selection and explore a cleaner approach.
Tech stack
go
Domain
backendbuild system
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
GoMake
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
30