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formula_installer.rb
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formula_installer.rb
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require "cxxstdlib"
require "exceptions"
require "formula"
require "keg"
require "tab"
require "bottles"
require "caveats"
require "cleaner"
require "formula_cellar_checks"
require "install_renamed"
require "cmd/postinstall"
require "hooks/bottles"
require "debrew"
require "sandbox"
require "requirements/cctools_requirement"
class FormulaInstaller
include FormulaCellarChecks
def self.mode_attr_accessor(*names)
attr_accessor(*names)
private(*names)
names.each do |name|
predicate = "#{name}?"
define_method(predicate) { !!send(name) }
private(predicate)
end
end
attr_reader :formula
attr_accessor :options, :build_bottle
mode_attr_accessor :show_summary_heading, :show_header
mode_attr_accessor :build_from_source, :force_bottle
mode_attr_accessor :ignore_deps, :only_deps, :interactive, :git
mode_attr_accessor :verbose, :debug, :quieter
def initialize(formula)
@formula = formula
@show_header = false
@ignore_deps = false
@only_deps = false
@build_from_source = false
@build_bottle = false
@force_bottle = false
@interactive = false
@git = false
@verbose = false
@quieter = false
@debug = false
@options = Options.new
@@attempted ||= Set.new
@poured_bottle = false
@pour_failed = false
end
def skip_deps_check?
ignore_deps?
end
# When no build tools are available and build flags are passed through ARGV,
# it's necessary to interrupt the user before any sort of installation
# can proceed. Only invoked when the user has no developer tools.
def self.prevent_build_flags
build_flags = ARGV.collect_build_flags
raise BuildFlagsError.new(build_flags) unless build_flags.empty?
end
def build_bottle?
!!@build_bottle && !formula.bottle_disabled?
end
def pour_bottle?(install_bottle_options = { :warn=>false })
return true if Homebrew::Hooks::Bottles.formula_has_bottle?(formula)
return false if @pour_failed
bottle = formula.bottle
return false unless bottle
return true if force_bottle?
return false if build_from_source? || build_bottle? || interactive?
return false if ARGV.cc
return false unless options.empty?
return false if formula.bottle_disabled?
return true if formula.local_bottle_path
unless formula.pour_bottle?
if install_bottle_options[:warn] && formula.pour_bottle_check_unsatisfied_reason
opoo <<-EOS.undent
Building #{formula.full_name} from source:
#{formula.pour_bottle_check_unsatisfied_reason}
EOS
end
return false
end
unless bottle.compatible_cellar?
if install_bottle_options[:warn]
opoo <<-EOS.undent
Building #{formula.full_name} from source:
The bottle needs a #{bottle.cellar} Cellar (yours is #{HOMEBREW_CELLAR}).
EOS
end
return false
end
true
end
def install_bottle_for?(dep, build)
return pour_bottle? if dep == formula
return false if build_from_source?
return false unless dep.bottle && dep.pour_bottle?
return false unless build.used_options.empty?
return false unless dep.bottle.compatible_cellar?
true
end
def prelude
Tab.clear_cache
verify_deps_exist unless skip_deps_check?
lock
check_install_sanity
end
def verify_deps_exist
begin
compute_dependencies
rescue TapFormulaUnavailableError => e
if e.tap.installed?
raise
else
e.tap.install
retry
end
end
rescue FormulaUnavailableError => e
e.dependent = formula.full_name
raise
end
def check_install_sanity
raise FormulaInstallationAlreadyAttemptedError, formula if @@attempted.include?(formula)
unless skip_deps_check?
unlinked_deps = formula.recursive_dependencies.map(&:to_formula).select do |dep|
dep.installed? && !dep.keg_only? && !dep.linked_keg.directory?
end
raise CannotInstallFormulaError,
"You must `brew link #{unlinked_deps*" "}` before #{formula.full_name} can be installed" unless unlinked_deps.empty?
end
end
def build_bottle_preinstall
@etc_var_glob ||= "#{HOMEBREW_PREFIX}/{etc,var}/**/*"
@etc_var_preinstall = Dir[@etc_var_glob]
end
def build_bottle_postinstall
@etc_var_postinstall = Dir[@etc_var_glob]
(@etc_var_postinstall - @etc_var_preinstall).each do |file|
Pathname.new(file).cp_path_sub(HOMEBREW_PREFIX, formula.bottle_prefix)
end
end
def install
# not in initialize so upgrade can unlink the active keg before calling this
# function but after instantiating this class so that it can avoid having to
# relink the active keg if possible (because it is slow).
if formula.linked_keg.directory?
# some other version is already installed *and* linked
raise CannotInstallFormulaError, <<-EOS.undent
#{formula.name}-#{formula.linked_keg.resolved_path.basename} already installed
To install this version, first `brew unlink #{formula.name}`
EOS
end
check_conflicts
if !pour_bottle? && !formula.bottle_unneeded? && !MacOS.has_apple_developer_tools?
raise BuildToolsError.new([formula])
end
unless skip_deps_check?
deps = compute_dependencies
check_dependencies_bottled(deps) if pour_bottle? && !MacOS.has_apple_developer_tools?
install_dependencies(deps)
end
return if only_deps?
if build_bottle? && (arch = ARGV.bottle_arch) && !Hardware::CPU.optimization_flags.include?(arch)
raise "Unrecognized architecture for --bottle-arch: #{arch}"
end
formula.deprecated_flags.each do |deprecated_option|
old_flag = deprecated_option.old_flag
new_flag = deprecated_option.current_flag
opoo "#{formula.full_name}: #{old_flag} was deprecated; using #{new_flag} instead!"
end
oh1 "Installing #{Tty.green}#{formula.full_name}#{Tty.reset}" if show_header?
@@attempted << formula
if pour_bottle?(:warn => true)
begin
install_relocation_tools unless formula.bottle_specification.skip_relocation?
pour
rescue Exception => e
# any exceptions must leave us with nothing installed
ignore_interrupts do
formula.prefix.rmtree if formula.prefix.directory?
formula.rack.rmdir_if_possible
end
raise if ARGV.homebrew_developer? || e.is_a?(Interrupt)
@pour_failed = true
onoe e.message
opoo "Bottle installation failed: building from source."
raise BuildToolsError.new([formula]) unless MacOS.has_apple_developer_tools?
else
@poured_bottle = true
end
end
build_bottle_preinstall if build_bottle?
unless @poured_bottle
compute_and_install_dependencies if @pour_failed && !ignore_deps?
build
clean
end
build_bottle_postinstall if build_bottle?
opoo "Nothing was installed to #{formula.prefix}" unless formula.installed?
end
def check_conflicts
return if ARGV.force?
conflicts = formula.conflicts.select do |c|
begin
f = Formulary.factory(c.name)
rescue TapFormulaUnavailableError
# If the formula name is in full-qualified name. Let's silently
# ignore it as we don't care about things used in taps that aren't
# currently tapped.
false
else
f.linked_keg.exist? && f.opt_prefix.exist?
end
end
raise FormulaConflictError.new(formula, conflicts) unless conflicts.empty?
end
# Compute and collect the dependencies needed by the formula currently
# being installed.
def compute_dependencies
req_map, req_deps = expand_requirements
check_requirements(req_map)
deps = expand_dependencies(req_deps + formula.deps)
deps
end
# Check that each dependency in deps has a bottle available, terminating
# abnormally with a BuildToolsError if one or more don't.
# Only invoked when the user has no developer tools.
def check_dependencies_bottled(deps)
unbottled = deps.reject do |dep, _|
dep_f = dep.to_formula
dep_f.pour_bottle? || dep_f.bottle_unneeded?
end
raise BuildToolsError.new(unbottled) unless unbottled.empty?
end
def compute_and_install_dependencies
deps = compute_dependencies
install_dependencies(deps)
end
def check_requirements(req_map)
fatals = []
req_map.each_pair do |dependent, reqs|
reqs.each do |req|
puts "#{dependent}: #{req.message}"
fatals << req if req.fatal?
end
end
raise UnsatisfiedRequirements.new(fatals) unless fatals.empty?
end
def install_requirement_default_formula?(req, dependent, build)
return false unless req.default_formula?
return true unless req.satisfied?
return false if req.run?
install_bottle_for?(dependent, build) || build_bottle?
end
def expand_requirements
unsatisfied_reqs = Hash.new { |h, k| h[k] = [] }
deps = []
formulae = [formula]
while f = formulae.pop
f.recursive_requirements do |dependent, req|
build = effective_build_options_for(dependent)
if (req.optional? || req.recommended?) && build.without?(req)
Requirement.prune
elsif req.build? && install_bottle_for?(dependent, build)
Requirement.prune
elsif install_requirement_default_formula?(req, dependent, build)
dep = req.to_dependency
deps.unshift(dep)
formulae.unshift(dep.to_formula)
Requirement.prune
elsif req.satisfied?
Requirement.prune
else
unsatisfied_reqs[dependent] << req
end
end
end
# Merge the repeated dependencies, which may have different tags.
deps = Dependency.merge_repeats(deps)
[unsatisfied_reqs, deps]
end
def expand_dependencies(deps)
inherited_options = {}
expanded_deps = Dependency.expand(formula, deps) do |dependent, dep|
options = inherited_options[dep.name] = inherited_options_for(dep)
build = effective_build_options_for(
dependent,
inherited_options.fetch(dependent.name, [])
)
if (dep.optional? || dep.recommended?) && build.without?(dep)
Dependency.prune
elsif dep.build? && install_bottle_for?(dependent, build)
Dependency.prune
elsif dep.satisfied?(options)
Dependency.skip
end
end
expanded_deps.map { |dep| [dep, inherited_options[dep.name]] }
end
def effective_build_options_for(dependent, inherited_options = [])
args = dependent.build.used_options
args |= dependent == formula ? options : inherited_options
args |= Tab.for_formula(dependent).used_options
args &= dependent.options
BuildOptions.new(args, dependent.options)
end
def inherited_options_for(dep)
inherited_options = Options.new
u = Option.new("universal")
if (options.include?(u) || formula.require_universal_deps?) && !dep.build? && dep.to_formula.option_defined?(u)
inherited_options << u
end
inherited_options
end
def install_dependencies(deps)
if deps.empty? && only_deps?
puts "All dependencies for #{formula.full_name} are satisfied."
else
oh1 "Installing dependencies for #{formula.full_name}: #{Tty.green}#{deps.map(&:first)*", "}#{Tty.reset}" unless deps.empty?
deps.each { |dep, options| install_dependency(dep, options) }
end
@show_header = true unless deps.empty?
end
# Installs the relocation tools (as provided by the cctools formula) as a hard
# dependency for every formula installed from a bottle when the user has no
# developer tools. Invoked unless the formula explicitly sets
# :any_skip_relocation in its bottle DSL.
def install_relocation_tools
cctools = CctoolsRequirement.new
dependency = cctools.to_dependency
formula = dependency.to_formula
return if cctools.satisfied? || @@attempted.include?(formula)
install_dependency(dependency, inherited_options_for(cctools))
end
class DependencyInstaller < FormulaInstaller
def skip_deps_check?
true
end
end
def install_dependency(dep, inherited_options)
df = dep.to_formula
tab = Tab.for_formula(df)
if df.linked_keg.directory?
linked_keg = Keg.new(df.linked_keg.resolved_path)
linked_keg.unlink
end
if df.installed?
installed_keg = Keg.new(df.prefix)
tmp_keg = Pathname.new("#{installed_keg}.tmp")
installed_keg.rename(tmp_keg)
end
fi = DependencyInstaller.new(df)
fi.options |= tab.used_options
fi.options |= Tab.remap_deprecated_options(df.deprecated_options, dep.options)
fi.options |= inherited_options
fi.build_from_source = build_from_source?
fi.verbose = verbose? && !quieter?
fi.debug = debug?
fi.prelude
oh1 "Installing #{formula.full_name} dependency: #{Tty.green}#{dep.name}#{Tty.reset}"
fi.install
fi.finish
rescue Exception
ignore_interrupts do
tmp_keg.rename(installed_keg) if tmp_keg && !installed_keg.directory?
linked_keg.link if linked_keg
end
raise
else
ignore_interrupts { tmp_keg.rmtree if tmp_keg && tmp_keg.directory? }
end
def caveats
return if only_deps?
audit_installed if ARGV.homebrew_developer? && !formula.keg_only?
c = Caveats.new(formula)
unless c.empty?
@show_summary_heading = true
ohai "Caveats", c.caveats
end
end
def finish
return if only_deps?
ohai "Finishing up" if verbose?
install_plist
keg = Keg.new(formula.prefix)
link(keg)
unless @poured_bottle && formula.bottle_specification.skip_relocation?
fix_install_names(keg)
end
if formula.post_install_defined?
if build_bottle?
ohai "Not running post_install as we're building a bottle"
puts "You can run it manually using `brew postinstall #{formula.full_name}`"
else
post_install
end
end
caveats
ohai "Summary" if verbose? || show_summary_heading?
puts summary
# let's reset Utils.git_available? if we just installed git
Utils.clear_git_available_cache if formula.name == "git"
ensure
unlock
end
def emoji
ENV["HOMEBREW_INSTALL_BADGE"] || "\xf0\x9f\x8d\xba"
end
def summary
s = ""
s << "#{emoji} " if MacOS.version >= :lion && !ENV["HOMEBREW_NO_EMOJI"]
s << "#{formula.prefix}: #{formula.prefix.abv}"
s << ", built in #{pretty_duration build_time}" if build_time
s
end
def build_time
@build_time ||= Time.now - @start_time if @start_time && !interactive?
end
def sanitized_ARGV_options
args = []
args << "--ignore-dependencies" if ignore_deps?
if build_bottle?
args << "--build-bottle"
args << "--bottle-arch=#{ARGV.bottle_arch}" if ARGV.bottle_arch
end
args << "--git" if git?
args << "--interactive" if interactive?
args << "--verbose" if verbose?
args << "--debug" if debug?
args << "--cc=#{ARGV.cc}" if ARGV.cc
args << "--default-fortran-flags" if ARGV.include? "--default-fortran-flags"
if ARGV.env
args << "--env=#{ARGV.env}"
elsif formula.env.std? || formula.recursive_dependencies.any? { |d| d.name == "scons" }
args << "--env=std"
end
if formula.head?
args << "--HEAD"
elsif formula.devel?
args << "--devel"
end
formula.options.each do |opt|
name = opt.name[/\A(.+)=\z$/, 1]
value = ARGV.value(name)
args << "--#{name}=#{value}" if name && value
end
args
end
def build_argv
sanitized_ARGV_options + options.as_flags
end
def build
FileUtils.rm_rf(formula.logs)
@start_time = Time.now
# 1. formulae can modify ENV, so we must ensure that each
# installation has a pristine ENV when it starts, forking now is
# the easiest way to do this
args = %W[
nice #{RUBY_PATH}
-W0
-I #{HOMEBREW_LOAD_PATH}
--
#{HOMEBREW_LIBRARY_PATH}/build.rb
#{formula.path}
].concat(build_argv)
if Sandbox.available? && ARGV.sandbox?
if Sandbox.auto_disable?
Sandbox.print_autodisable_warning
else
Sandbox.print_sandbox_message
end
end
Utils.safe_fork do
# Invalidate the current sudo timestamp in case a build script calls sudo
system "/usr/bin/sudo", "-k"
if Sandbox.available? && ARGV.sandbox? && !Sandbox.auto_disable?
sandbox = Sandbox.new
formula.logs.mkpath
sandbox.record_log(formula.logs/"sandbox.build.log")
sandbox.allow_write_temp_and_cache
sandbox.allow_write_log(formula)
sandbox.allow_write_xcode
sandbox.allow_write_cellar(formula)
sandbox.exec(*args)
else
exec(*args)
end
end
if !formula.prefix.directory? || Keg.new(formula.prefix).empty_installation?
raise "Empty installation"
end
rescue Exception
ignore_interrupts do
# any exceptions must leave us with nothing installed
formula.prefix.rmtree if formula.prefix.directory?
formula.rack.rmdir_if_possible
end
raise
end
def link(keg)
if formula.keg_only?
begin
keg.optlink
rescue Keg::LinkError => e
onoe "Failed to create #{formula.opt_prefix}"
puts "Things that depend on #{formula.full_name} will probably not build."
puts e
Homebrew.failed = true
end
return
end
if keg.linked?
opoo "This keg was marked linked already, continuing anyway"
keg.remove_linked_keg_record
end
link_overwrite_backup = {} # Hash: conflict file -> backup file
backup_dir = HOMEBREW_CACHE/"Backup"
begin
keg.link
rescue Keg::ConflictError => e
conflict_file = e.dst
if formula.link_overwrite?(conflict_file) && !link_overwrite_backup.key?(conflict_file)
backup_file = backup_dir/conflict_file.relative_path_from(HOMEBREW_PREFIX).to_s
backup_file.parent.mkpath
conflict_file.rename backup_file
link_overwrite_backup[conflict_file] = backup_file
retry
end
onoe "The `brew link` step did not complete successfully"
puts "The formula built, but is not symlinked into #{HOMEBREW_PREFIX}"
puts e
puts
puts "Possible conflicting files are:"
mode = OpenStruct.new(:dry_run => true, :overwrite => true)
keg.link(mode)
@show_summary_heading = true
Homebrew.failed = true
rescue Keg::LinkError => e
onoe "The `brew link` step did not complete successfully"
puts "The formula built, but is not symlinked into #{HOMEBREW_PREFIX}"
puts e
puts
puts "You can try again using:"
puts " brew link #{formula.name}"
@show_summary_heading = true
Homebrew.failed = true
rescue Exception => e
onoe "An unexpected error occurred during the `brew link` step"
puts "The formula built, but is not symlinked into #{HOMEBREW_PREFIX}"
puts e
puts e.backtrace if debug?
@show_summary_heading = true
ignore_interrupts do
keg.unlink
link_overwrite_backup.each do |origin, backup|
origin.parent.mkpath
backup.rename origin
end
end
Homebrew.failed = true
raise
end
unless link_overwrite_backup.empty?
opoo "These files were overwritten during `brew link` step:"
puts link_overwrite_backup.keys
puts
puts "They have been backed up in #{backup_dir}"
@show_summary_heading = true
end
end
def install_plist
return unless formula.plist
formula.plist_path.atomic_write(formula.plist)
formula.plist_path.chmod 0644
log = formula.var/"log"
log.mkpath if formula.plist.include? log.to_s
rescue Exception => e
onoe "Failed to install plist file"
ohai e, e.backtrace if debug?
Homebrew.failed = true
end
def fix_install_names(keg)
keg.fix_install_names
rescue Exception => e
onoe "Failed to fix install names"
puts "The formula built, but you may encounter issues using it or linking other"
puts "formula against it."
ohai e, e.backtrace if debug?
Homebrew.failed = true
@show_summary_heading = true
end
def clean
ohai "Cleaning" if verbose?
Cleaner.new(formula).clean
rescue Exception => e
opoo "The cleaning step did not complete successfully"
puts "Still, the installation was successful, so we will link it into your prefix"
ohai e, e.backtrace if debug?
Homebrew.failed = true
@show_summary_heading = true
end
def post_install
Homebrew.run_post_install(formula)
rescue Exception => e
opoo "The post-install step did not complete successfully"
puts "You can try again using `brew postinstall #{formula.full_name}`"
ohai e, e.backtrace if debug?
Homebrew.failed = true
@show_summary_heading = true
end
def pour
if Homebrew::Hooks::Bottles.formula_has_bottle?(formula)
return if Homebrew::Hooks::Bottles.pour_formula_bottle(formula)
end
if (bottle_path = formula.local_bottle_path)
downloader = LocalBottleDownloadStrategy.new(bottle_path)
else
downloader = formula.bottle
downloader.verify_download_integrity(downloader.fetch)
end
HOMEBREW_CELLAR.cd do
downloader.stage
end
keg = Keg.new(formula.prefix)
unless formula.bottle_specification.skip_relocation?
keg.relocate_install_names Keg::PREFIX_PLACEHOLDER, HOMEBREW_PREFIX.to_s,
Keg::CELLAR_PLACEHOLDER, HOMEBREW_CELLAR.to_s
end
keg.relocate_text_files Keg::PREFIX_PLACEHOLDER, HOMEBREW_PREFIX.to_s,
Keg::CELLAR_PLACEHOLDER, HOMEBREW_CELLAR.to_s
Pathname.glob("#{formula.bottle_prefix}/{etc,var}/**/*") do |path|
path.extend(InstallRenamed)
path.cp_path_sub(formula.bottle_prefix, HOMEBREW_PREFIX)
end
FileUtils.rm_rf formula.bottle_prefix
tab = Tab.for_keg(formula.prefix)
CxxStdlib.check_compatibility(
formula, formula.recursive_dependencies,
Keg.new(formula.prefix), tab.compiler
)
tab.tap = formula.tap
tab.poured_from_bottle = true
tab.time = Time.now.to_i
tab.head = Homebrew.git_head
tab.write
end
def audit_check_output(output)
if output
opoo output
@show_summary_heading = true
end
end
def audit_installed
audit_check_output(check_PATH(formula.bin))
audit_check_output(check_PATH(formula.sbin))
super
end
private
def hold_locks?
@hold_locks || false
end
def lock
if (@@locked ||= []).empty?
formula.recursive_dependencies.each do |dep|
@@locked << dep.to_formula
end unless ignore_deps?
@@locked.unshift(formula)
@@locked.uniq!
@@locked.each(&:lock)
@hold_locks = true
end
end
def unlock
if hold_locks?
@@locked.each(&:unlock)
@@locked.clear
@hold_locks = false
end
end
end