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#!/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby -W0
# This script is called by formula_installer as a separate instance.
# Rationale: Formula can use __END__, Formula can change ENV
# Thrown exceptions are propogated back to the parent process over a pipe
STD_TRAP = trap("INT") { exit! 130 } # no backtrace thanks
at_exit do
# the whole of everything must be run in at_exit because the formula has to
# be the run script as __END__ must work for *that* formula.
main
end
require 'global'
require 'cxxstdlib'
require 'debrew' if ARGV.debug?
def main
# The main Homebrew process expects to eventually see EOF on the error
# pipe in FormulaInstaller#build. However, if any child process fails to
# terminate (i.e, fails to close the descriptor), this won't happen, and
# the installer will hang. Set close-on-exec to prevent this.
# Whether it is *wise* to launch daemons from formulae is a separate
# question altogether.
if ENV['HOMEBREW_ERROR_PIPE']
require 'fcntl'
error_pipe = IO.new(ENV['HOMEBREW_ERROR_PIPE'].to_i, 'w')
error_pipe.fcntl(Fcntl::F_SETFD, Fcntl::FD_CLOEXEC)
end
raise $! if $! # an exception was already thrown when parsing the formula
trap("INT", STD_TRAP) # restore default CTRL-C handler
require 'hardware'
require 'keg'
require 'extend/ENV'
# Force any future invocations of sudo to require the user's password to be
# re-entered. This is in-case any build script call sudo. Certainly this is
# can be inconvenient for the user. But we need to be safe.
system "/usr/bin/sudo", "-k"
Build.new(Formula.factory($0)).install
rescue Exception => e
unless error_pipe.nil?
e.continuation = nil if ARGV.debug?
Marshal.dump(e, error_pipe)
error_pipe.close
exit! 1
else
onoe e
puts e.backtrace
exit! 2
end
end
class Build
attr_reader :f, :deps, :reqs
def initialize(f)
@f = f
@deps = expand_deps
@reqs = expand_reqs
end
def post_superenv_hacks
# Only allow Homebrew-approved directories into the PATH, unless
# a formula opts-in to allowing the user's path.
if f.env.userpaths? || reqs.any? { |rq| rq.env.userpaths? }
ENV.userpaths!
end
end
def pre_superenv_hacks
# Allow a formula to opt-in to the std environment.
ARGV.unshift '--env=std' if (f.env.std? or deps.any? { |d| d.name == 'scons' }) and
not ARGV.include? '--env=super'
end
def expand_reqs
f.recursive_requirements do |dependent, req|
if (req.optional? || req.recommended?) && dependent.build.without?(req)
Requirement.prune
elsif req.build? && dependent != f
Requirement.prune
elsif req.satisfied? && req.default_formula? && (dep = req.to_dependency).installed?
deps << dep
Requirement.prune
end
end
end
def expand_deps
f.recursive_dependencies do |dependent, dep|
if (dep.optional? || dep.recommended?) && dependent.build.without?(dep)
Dependency.prune
elsif dep.build? && dependent != f
Dependency.prune
elsif dep.build?
Dependency.keep_but_prune_recursive_deps
end
end
end
def install
keg_only_deps = deps.map(&:to_formula).select(&:keg_only?)
pre_superenv_hacks
ENV.activate_extensions!
deps.map(&:to_formula).each do |dep|
opt = HOMEBREW_PREFIX/:opt/dep
fixopt(dep) unless opt.directory? or ARGV.ignore_deps?
end
if superenv?
ENV.keg_only_deps = keg_only_deps.map(&:to_s)
ENV.deps = deps.map { |d| d.to_formula.to_s }
ENV.x11 = reqs.any? { |rq| rq.kind_of?(X11Dependency) }
ENV.setup_build_environment(f)
post_superenv_hacks
reqs.each(&:modify_build_environment)
deps.each(&:modify_build_environment)
else
ENV.setup_build_environment(f)
reqs.each(&:modify_build_environment)
deps.each(&:modify_build_environment)
keg_only_deps.each do |dep|
opt = dep.opt_prefix
ENV.prepend_path 'PATH', "#{opt}/bin"
ENV.prepend_path 'PKG_CONFIG_PATH', "#{opt}/lib/pkgconfig"
ENV.prepend_path 'PKG_CONFIG_PATH', "#{opt}/share/pkgconfig"
ENV.prepend_path 'ACLOCAL_PATH', "#{opt}/share/aclocal"
ENV.prepend_path 'CMAKE_PREFIX_PATH', opt
ENV.prepend 'LDFLAGS', "-L#{opt}/lib" if (opt/:lib).directory?
ENV.prepend 'CPPFLAGS', "-I#{opt}/include" if (opt/:include).directory?
end
end
f.brew do
if ARGV.flag? '--git'
system "git init"
system "git add -A"
end
if ARGV.interactive?
ohai "Entering interactive mode"
puts "Type `exit' to return and finalize the installation"
puts "Install to this prefix: #{f.prefix}"
if ARGV.flag? '--git'
puts "This directory is now a git repo. Make your changes and then use:"
puts " git diff | pbcopy"
puts "to copy the diff to the clipboard."
end
interactive_shell f
else
f.prefix.mkpath
begin
f.install
# This first test includes executables because we still
# want to record the stdlib for something that installs no
# dylibs.
stdlibs = Keg.new(f.prefix).detect_cxx_stdlibs
# This currently only tracks a single C++ stdlib per dep,
# though it's possible for different libs/executables in
# a given formula to link to different ones.
stdlib_in_use = CxxStdlib.new(stdlibs.first, ENV.compiler)
begin
stdlib_in_use.check_dependencies(f, deps)
rescue IncompatibleCxxStdlibs => e
opoo e.message
end
# This second check is recorded for checking dependencies,
# so executable are irrelevant at this point. If a piece
# of software installs an executable that links against libstdc++
# and dylibs against libc++, libc++-only dependencies can safely
# link against it.
stdlibs = Keg.new(f.prefix).detect_cxx_stdlibs :skip_executables => true
Tab.create(f, ENV.compiler, stdlibs.first,
Options.coerce(ARGV.options_only)).write
rescue Exception => e
if ARGV.debug?
debrew e, f
else
raise e
end
end
# Find and link metafiles
f.prefix.install_metafiles Pathname.pwd
end
end
end
end
def fixopt f
path = if f.linked_keg.directory? and f.linked_keg.symlink?
f.linked_keg.realpath
elsif f.prefix.directory?
f.prefix
elsif (kids = f.rack.children).size == 1 and kids.first.directory?
kids.first
else
raise
end
Keg.new(path).optlink
rescue StandardError
raise "#{f.opt_prefix} not present or broken\nPlease reinstall #{f}. Sorry :("
end
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