homebrew-core/Formula/go.rb
Jack Nagel ec11577107 Switch compilers when no build is specified
Given the current state of OS X compilers, the original fails_with
behavior is becoming less useful, mostly resulting in build failures
each time the compiler is updated. So make the following changes:

When a build is specified, we retain the old behavior: switch compilers
if the available compiler is <= the build, don't switch if it is > the
build.

When no build is specified, unconditionally switch compilers, and don't
output the advice message. This allows us to mark formulae as
perpetually failing, avoiding the need to update formulae each time a
new compiler build is made available.

As a bonus, this makes the logic much easier to reason about.

Closes Homebrew/homebrew#18175.
2013-03-12 13:55:15 -05:00

90 lines
2.7 KiB
Ruby

require 'formula'
class Go < Formula
homepage 'http://golang.org'
url 'http://go.googlecode.com/files/go1.0.3.src.tar.gz'
version '1.0.3'
sha1 '1a67293c10d6c06c633c078a7ca67e98c8b58471'
head 'https://go.googlecode.com/hg/'
skip_clean 'bin'
option 'cross-compile-all', "Build the cross-compilers and runtime support for all supported platforms"
option 'cross-compile-common', "Build the cross-compilers and runtime support for darwin, linux and windows"
if build.head?
fails_with :clang do
cause "clang: error: no such file or directory: 'libgcc.a'"
end
end
def install
# install the completion scripts
(prefix/'etc/bash_completion.d').install 'misc/bash/go' => 'go-completion.bash'
(share/'zsh/site-functions').install 'misc/zsh/go' => '_go'
if build.include? 'cross-compile-all'
targets = [
['linux', ['386', 'amd64', 'arm'], { :cgo => false }],
['freebsd', ['386', 'amd64'], { :cgo => false }],
['openbsd', ['386', 'amd64'], { :cgo => false }],
['windows', ['386', 'amd64'], { :cgo => false }],
# Host platform (darwin/amd64) must always come last
['darwin', ['386', 'amd64'], { :cgo => true }],
]
elsif build.include? 'cross-compile-common'
targets = [
['linux', ['386', 'amd64', 'arm'], { :cgo => false }],
['windows', ['386', 'amd64'], { :cgo => false }],
# Host platform (darwin/amd64) must always come last
['darwin', ['386', 'amd64'], { :cgo => true }],
]
else
targets = [
['darwin', [''], { :cgo => true }]
]
end
# The version check is due to:
# http://codereview.appspot.com/5654068
Pathname.new('VERSION').write 'default' if build.head?
cd 'src' do
# Build only. Run `brew test go` to run distrib's tests.
targets.each do |(os, archs, opts)|
archs.each do |arch|
ENV['GOROOT_FINAL'] = prefix
ENV['GOOS'] = os
ENV['GOARCH'] = arch
ENV['CGO_ENABLED'] = opts[:cgo] ? "1" : "0"
allow_fail = opts[:allow_fail] ? "|| true" : ""
system "./make.bash --no-clean #{allow_fail}"
end
end
end
# cleanup ENV
ENV.delete('GOROOT_FINAL')
ENV.delete('GOOS')
ENV.delete('GOARCH')
ENV.delete('CGO_ENABLED')
Pathname.new('pkg/obj').rmtree
# Don't install header files; they aren't necessary and can
# cause problems with other builds. See:
# http://trac.macports.org/ticket/30203
# http://code.google.com/p/go/issues/detail?id=2407
prefix.install(Dir['*'] - ['include'])
end
def test
cd "#{prefix}/src" do
system './run.bash --no-rebuild'
end
end
end