Class: Formula Abstract

Inherits:
Object
  • Object
show all
Extended by:
BuildEnvironment::DSL, Cachable, Enumerable, Forwardable
Includes:
FileUtils, Utils::Inreplace, Utils::Shell
Defined in:
brew/Library/Homebrew/formula.rb

Overview

This class is abstract.

A formula provides instructions and metadata for Homebrew to install a piece of software. Every Homebrew formula is a Formula. All subclasses of Formula (and all Ruby classes) have to be named UpperCase and not-use-dashes. A formula specified in this-formula.rb should have a class named ThisFormula. Homebrew does enforce that the name of the file and the class correspond. Make sure you check with brew search that the name is free!

class Wget < Formula
  homepage "https://www.gnu.org/software/wget/"
  url "https://ftp.gnu.org/gnu/wget/wget-1.15.tar.gz"
  sha256 "52126be8cf1bddd7536886e74c053ad7d0ed2aa89b4b630f76785bac21695fcd"

  def install
    system "./configure", "--prefix=#{prefix}"
    system "make", "install"
  end
end

Constant Summary

Constants included from Utils::Shell

Utils::Shell::SHELL_PROFILE_MAP, Utils::Shell::UNSAFE_SHELL_CHAR

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Cachable

cache, clear_cache

Methods included from Utils::Shell

csh_quote, export_value, from_path, parent, preferred, prepend_path_in_profile, profile, set_variable_in_profile, sh_quote

Methods included from Utils::Inreplace

inreplace

Class Attribute Details

.bottle(*args, &block) ⇒ Object

Adds a bottle SoftwareSpec. This provides a pre-built binary package built by the Homebrew maintainers for you. It will be installed automatically if there is a binary package for your platform and you haven’t passed or previously used any options on this formula.

If you maintain your own repository, you can add your own bottle links. You can ignore this block entirely if submitting to Homebrew/homebrew-core. It’ll be handled for you by the Brew Test Bot.

bottle do
  root_url "https://example.com" # Optional root to calculate bottle URLs
  prefix "/opt/homebrew" # Optional HOMEBREW_PREFIX in which the bottles were built.
  cellar "/opt/homebrew/Cellar" # Optional HOMEBREW_CELLAR in which the bottles were built.
  rebuild 1 # Making the old bottle outdated without bumping the version/revision of the formula.
  sha256 "4355a46b19d348dc2f57c046f8ef63d4538ebb936000f3c9ee954a27460dd865" => :el_capitan
  sha256 "53c234e5e8472b6ac51c1ae1cab3fe06fad053beb8ebfd8977b010655bfdd3c3" => :yosemite
  sha256 "1121cfccd5913f0a63fec40a6ffd44ea64f9dc135c66634ba001d10bcf4302a2" => :mavericks
end

Only formulae where the upstream URL breaks or moves frequently, require compiling or have a reasonable amount of patches/resources should be bottled. Formulae which do not meet the above requirements should not be bottled.

Formulae which should not be bottled and can be installed without any compile required should be tagged with:

bottle :unneeded

Otherwise formulae which do not meet the above requirements and should not be bottled should be tagged with:

bottle :disable, "reasons"


2246
2247
2248
# File 'brew/Library/Homebrew/formula.rb', line 2246

def bottle(*args, &block)
  stable.bottle(*args, &block)
end

.deprecated_option(hash) ⇒ Object

Deprecated options are used to rename options and migrate users who used them to newer ones. They are mostly used for migrating non-with options (e.g. enable-debug) to with options (e.g. with-debug).

deprecated_option "enable-debug" => "with-debug"


2397
2398
2399
# File 'brew/Library/Homebrew/formula.rb', line 2397

def deprecated_option(hash)
  specs.each { |spec| spec.deprecated_option(hash) }
end

.desc=(value) ⇒ Object (writeonly)

A one-line description of the software. Used by users to get an overview of the software and Homebrew maintainers. Shows when running brew info.

desc "Example formula"


2107
# File 'brew/Library/Homebrew/formula.rb', line 2107

attr_rw :desc

.devel(&block) ⇒ Object

Adds a devel SoftwareSpec. This can be installed by passing the --devel option to allow installing non-stable (e.g. beta) versions of software.

devel do
  url "https://example.com/archive-2.0-beta.tar.gz"
  sha256 "2a2ba417eebaadcb4418ee7b12fe2998f26d6e6f7fda7983412ff66a741ab6f7"

  depends_on "cairo"
  depends_on "pixman"
end


2286
2287
2288
2289
2290
2291
# File 'brew/Library/Homebrew/formula.rb', line 2286

def devel(&block)
  @devel ||= SoftwareSpec.new
  return @devel unless block_given?

  @devel.instance_eval(&block)
end

.head(val = nil, specs = {}, &block) ⇒ Object

Adds a head SoftwareSpec. This can be installed by passing the --HEAD option to allow installing software directly from a branch of a version-control repository. If called as a method this provides just the url for the SoftwareSpec. If a block is provided you can also add depends_on and Patches just to the head SoftwareSpec. The download strategies (e.g. :using =>) are the same as for url. master is the default branch and doesn’t need stating with a :branch parameter.

head "https://we.prefer.https.over.git.example.com/.git"
head "https://example.com/.git", :branch => "name_of_branch", :revision => "abc123"

or (if autodetect fails):

head "https://hg.is.awesome.but.git.has.won.example.com/", :using => :hg


2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
# File 'brew/Library/Homebrew/formula.rb', line 2305

def head(val = nil, specs = {}, &block)
  @head ||= HeadSoftwareSpec.new
  if block_given?
    @head.instance_eval(&block)
  elsif val
    @head.url(val, specs)
  else
    @head
  end
end

.homepage=(value) ⇒ Object (writeonly)

The homepage for the software. Used by users to get more information about the software and Homebrew maintainers as a point of contact for e.g. submitting patches. Can be opened with running brew home.

homepage "https://www.example.com"


2116
# File 'brew/Library/Homebrew/formula.rb', line 2116

attr_rw :homepage

.mirror(val) ⇒ Object

Additional URLs for the stable version of the formula. These are only used if the url fails to download. It’s optional and there can be more than one. Generally we add them when the main url is unreliable. If url is really unreliable then we may swap the mirror and url.

mirror "https://in.case.the.host.is.down.example.com"
mirror "https://in.case.the.mirror.is.down.example.com


2198
2199
2200
# File 'brew/Library/Homebrew/formula.rb', line 2198

def mirror(val)
  stable.mirror(val)
end

.option(name, description = "") ⇒ Object

Options can be used as arguments to brew install. To switch features on/off: "with-something" or "with-otherthing". To use other software: "with-other-software" or "without-foo" Note that for depends_on that are :optional or :recommended, options are generated automatically.

There are also some special options:

  • :universal: build a universal binary/library (e.g. on newer Intel Macs this means a combined x86_64/x86 binary/library).
option "with-spam", "The description goes here without a dot at the end"
option "with-qt", "Text here overwrites the autogenerated one from 'depends_on "qt" => :optional'"
option :universal


2388
2389
2390
# File 'brew/Library/Homebrew/formula.rb', line 2388

def option(name, description = "")
  specs.each { |spec| spec.option(name, description) }
end

.revision=(value) ⇒ Object (writeonly)

Used for creating new Homebrew versions of software without new upstream versions. For example, if we bump the major version of a library this Formula depends_on then we may need to update the revision of this Formula to install a new version linked against the new library version. 0 if unset.

revision 1


2139
# File 'brew/Library/Homebrew/formula.rb', line 2139

attr_rw :revision

.sha256=(value) ⇒ Object (writeonly)

To verify the cached download’s integrity and security we verify the SHA-256 hash matches which we’ve declared in the Formula. To quickly fill this value you can leave it blank and run brew fetch --force and it’ll tell you the currently valid value.

sha256 "2a2ba417eebaadcb4418ee7b12fe2998f26d6e6f7fda7983412ff66a741ab6f7"


2210
2211
2212
# File 'brew/Library/Homebrew/formula.rb', line 2210

Checksum::TYPES.each do |type|
  define_method(type) { |val| stable.send(type, val) }
end

.stable(&block) ⇒ Object

Allows adding depends_on and Patches just to the stable SoftwareSpec. This is required instead of using a conditional. It is preferrable to also pull the url and sha256 into the block if one is added.

stable do
  url "https://example.com/foo-1.0.tar.gz"
  sha256 "2a2ba417eebaadcb4418ee7b12fe2998f26d6e6f7fda7983412ff66a741ab6f7"

  depends_on "libxml2"
  depends_on "libffi"
end


2267
2268
2269
2270
2271
2272
# File 'brew/Library/Homebrew/formula.rb', line 2267

def stable(&block)
  @stable ||= SoftwareSpec.new
  return @stable unless block_given?

  @stable.instance_eval(&block)
end

.url(val, specs = {}) ⇒ Object

The URL used to download the source for the stable version of the formula. We prefer https for security and proxy reasons. If not inferrable, specify the download strategy with :using => ...

  • :git, :hg, :svn, :bzr, :fossil, :cvs,
  • :curl (normal file download. Will also extract.)
  • :nounzip (without extracting)
  • :post (download via an HTTP POST)
  • :s3 (download from S3 using signed request)
url "https://packed.sources.and.we.prefer.https.example.com/archive-1.2.3.tar.bz2"
url "https://some.dont.provide.archives.example.com",
    :using => :git,
    :tag => "1.2.3",
    :revision => "db8e4de5b2d6653f66aea53094624468caad15d2"


2175
2176
2177
# File 'brew/Library/Homebrew/formula.rb', line 2175

def url(val, specs = {})
  stable.url(val, specs)
end

.version(val = nil) ⇒ Object

The version string for the stable version of the formula. The version is autodetected from the URL and/or tag so only needs to be declared if it cannot be autodetected correctly.

version "1.2-final"


2185
2186
2187
# File 'brew/Library/Homebrew/formula.rb', line 2185

def version(val = nil)
  stable.version(val)
end

.version_scheme=(value) ⇒ Object (writeonly)

Used for creating new Homebrew version schemes. For example, if we want to change version scheme from one to another, then we may need to update version_scheme of this Formula to be able to use new version scheme. e.g. to move from 20151020 scheme to 1.0.0 we need to increment version_scheme. Without this, the prior scheme will always equate to a higher version. 0 if unset.

version_scheme 1


2151
# File 'brew/Library/Homebrew/formula.rb', line 2151

attr_rw :version_scheme

Instance Attribute Details

#alias_nameObject (readonly)

The name of the alias that was used to identify this Formula. e.g. another-name-for-this-formula



79
80
81
# File 'brew/Library/Homebrew/formula.rb', line 79

def alias_name
  @alias_name
end

#alias_pathObject (readonly)

The path to the alias that was used to identify this Formula. e.g. /usr/local/Library/Taps/homebrew/homebrew-core/Aliases/another-name-for-this-formula



75
76
77
# File 'brew/Library/Homebrew/formula.rb', line 75

def alias_path
  @alias_path
end

#buildBuildOptions

The BuildOptions for this Formula. Lists the arguments passed and any options in the Formula. Note that these may differ at different times during the installation of a Formula. This is annoying but the result of state that we’re trying to eliminate.

Returns:



168
169
170
# File 'brew/Library/Homebrew/formula.rb', line 168

def build
  @build
end

#buildpathObject (readonly)

The current working directory during builds. Will only be non-nil inside #install.



147
148
149
# File 'brew/Library/Homebrew/formula.rb', line 147

def buildpath
  @buildpath
end

#follow_installed_aliasBoolean Also known as: follow_installed_alias?

A Boolean indicating whether this formula should be considered outdated if the target of the alias it was installed with has since changed. Defaults to true.

Returns:

  • (Boolean)


174
175
176
# File 'brew/Library/Homebrew/formula.rb', line 174

def follow_installed_alias
  @follow_installed_alias
end

#full_alias_nameObject (readonly)

The fully-qualified alias referring to this Formula. For core formula it’s the same as #alias_name. e.g. homebrew/tap-name/another-name-for-this-formula



89
90
91
# File 'brew/Library/Homebrew/formula.rb', line 89

def full_alias_name
  @full_alias_name
end

#full_nameObject (readonly)

The fully-qualified name of this Formula. For core formula it’s the same as #name. e.g. homebrew/tap-name/this-formula



84
85
86
# File 'brew/Library/Homebrew/formula.rb', line 84

def full_name
  @full_name
end

#nameObject (readonly)

The name of this Formula. e.g. this-formula



71
72
73
# File 'brew/Library/Homebrew/formula.rb', line 71

def name
  @name
end

#pathObject (readonly)

The full path to this Formula. e.g. /usr/local/Library/Taps/homebrew/homebrew-core/Formula/this-formula.rb



93
94
95
# File 'brew/Library/Homebrew/formula.rb', line 93

def path
  @path
end

#revisionObject (readonly)

Used for creating new Homebrew versions of software without new upstream versions.

See Also:



140
141
142
# File 'brew/Library/Homebrew/formula.rb', line 140

def revision
  @revision
end

#testpathObject (readonly)

The current working directory during tests. Will only be non-nil inside test.



151
152
153
# File 'brew/Library/Homebrew/formula.rb', line 151

def testpath
  @testpath
end

#version_schemeObject (readonly)

Used to change version schemes for packages



143
144
145
# File 'brew/Library/Homebrew/formula.rb', line 143

def version_scheme
  @version_scheme
end

Class Method Details

.[](name) ⇒ Object



1473
1474
1475
# File 'brew/Library/Homebrew/formula.rb', line 1473

def self.[](name)
  Formulary.factory(name)
end

.clear_installed_formulae_cacheObject

Clear caches of .racks and .installed.



1398
1399
1400
1401
# File 'brew/Library/Homebrew/formula.rb', line 1398

def self.clear_installed_formulae_cache
  clear_racks_cache
  @installed = nil
end

.clear_racks_cacheObject

Clear cache of .racks



1393
1394
1395
# File 'brew/Library/Homebrew/formula.rb', line 1393

def self.clear_racks_cache
  @racks = nil
end

.conflicts_with(*names) ⇒ Object

If this formula conflicts with another one.

conflicts_with "imagemagick", :because => "because both install 'convert' binaries"


2457
2458
2459
2460
# File 'brew/Library/Homebrew/formula.rb', line 2457

def conflicts_with(*names)
  opts = names.last.is_a?(Hash) ? names.pop : {}
  names.each { |name| conflicts << FormulaConflict.new(name, opts[:because]) }
end

.cxxstdlib_check(check_type) ⇒ Object

Pass :skip to this method to disable post-install stdlib checking



2486
2487
2488
# File 'brew/Library/Homebrew/formula.rb', line 2486

def cxxstdlib_check(check_type)
  define_method(:skip_cxxstdlib_check?) { true } if check_type == :skip
end

.depends_on(dep) ⇒ Object

The dependencies for this formula. Use strings for the names of other formulae. Homebrew provides some :special dependencies for stuff that requires certain extra handling (often changing some ENV vars or deciding if to use the system provided version or not.)

# `:build` means this dep is only needed during build.
depends_on "cmake" => :build
depends_on "homebrew/dupes/tcl-tk" => :optional
# `:recommended` dependencies are built by default.
# But a `--without-...` option is generated to opt-out.
depends_on "readline" => :recommended
# `:optional` dependencies are NOT built by default.
# But a `--with-...` options is generated.
depends_on "glib" => :optional
# If you need to specify that another formula has to be built with/out
# certain options (note, no `--` needed before the option):
depends_on "zeromq" => "with-pgm"
depends_on "qt" => ["with-qtdbus", "developer"] # Multiple options.
# Optional and enforce that boost is built with `--with-c++11`.
depends_on "boost" => [:optional, "with-c++11"]
# If a dependency is only needed in certain cases:
depends_on "sqlite" if MacOS.version == :mavericks
depends_on :xcode # If the formula really needs full Xcode.
depends_on :macos => :mojave # Needs at least macOS Mojave (10.14).
depends_on :x11 => :optional # X11/XQuartz components.
depends_on :osxfuse # Permits the use of the upstream signed binary or our source package.
depends_on :tuntap # Does the same thing as above. This is vital for Yosemite and above.
# It is possible to only depend on something if
# `build.with?` or `build.without? "another_formula"`:
depends_on "postgresql" if build.without? "sqlite"
# Python 3.x if the `--with-python` is given to `brew install example`
depends_on "python3" => :optional
# Python 2.7:
depends_on "python@2"


2366
2367
2368
# File 'brew/Library/Homebrew/formula.rb', line 2366

def depends_on(dep)
  specs.each { |spec| spec.depends_on(dep) }
end

.fails_with(compiler, &block) ⇒ Object

Marks the Formula as failing with a particular compiler so it will fall back to others. For Apple compilers, this should be in the format:

fails_with :clang do
  build 600
  cause "multiple configure and compile errors"
end

The block may be omitted, and if present the build may be omitted; if so, then the compiler will be blacklisted for all versions.

major_version should be the major release number only, for instance ‘7’ for the GCC 7 series (7.0, 7.1, etc.). If version or the block is omitted, then the compiler will be blacklisted for all compilers in that series.

For example, if a bug is only triggered on GCC 7.1 but is not encountered on 7.2:

fails_with :gcc => '7' do
  version '7.1'
end


2511
2512
2513
# File 'brew/Library/Homebrew/formula.rb', line 2511

def fails_with(compiler, &block)
  specs.each { |spec| spec.fails_with(compiler, &block) }
end

.go_resource(name, &block) ⇒ Object



2329
2330
2331
# File 'brew/Library/Homebrew/formula.rb', line 2329

def go_resource(name, &block)
  specs.each { |spec| spec.go_resource(name, &block) }
end

.installed_with_alias_path(alias_path) ⇒ Object



1425
1426
1427
1428
1429
# File 'brew/Library/Homebrew/formula.rb', line 1425

def self.installed_with_alias_path(alias_path)
  return [] if alias_path.nil?

  installed.select { |f| f.installed_alias_path == alias_path }
end

.keg_only(reason, explanation = "") ⇒ Object

Software that will not be symlinked into the brew --prefix will only live in its Cellar. Other formulae can depend on it and then brew will add the necessary includes and libs (etc.) during the brewing of that other formula. But generally, keg-only formulae are not in your PATH and not seen by compilers if you build your own software outside of Homebrew. This way, we don’t shadow software provided by macOS.

keg_only :provided_by_macos
keg_only "because I want it so"


2481
2482
2483
# File 'brew/Library/Homebrew/formula.rb', line 2481

def keg_only(reason, explanation = "")
  @keg_only_reason = KegOnlyReason.new(reason, explanation)
end

.needs(*standards) ⇒ Object



2515
2516
2517
# File 'brew/Library/Homebrew/formula.rb', line 2515

def needs(*standards)
  specs.each { |spec| spec.needs(*standards) }
end

.patch(strip = :p1, src = nil, &block) ⇒ Object

External patches can be declared using resource-style blocks.

patch do
  url "https://example.com/example_patch.diff"
  sha256 "c6bc3f48ce8e797854c4b865f6a8ff969867bbcaebd648ae6fd825683e59fef2"
end

A strip level of -p1 is assumed. It can be overridden using a symbol argument:

patch :p0 do
  url "https://example.com/example_patch.diff"
  sha256 "c6bc3f48ce8e797854c4b865f6a8ff969867bbcaebd648ae6fd825683e59fef2"
end

Patches can be declared in stable, devel, and head blocks. This form is preferred over using conditionals.

stable do
  patch do
    url "https://example.com/example_patch.diff"
    sha256 "c6bc3f48ce8e797854c4b865f6a8ff969867bbcaebd648ae6fd825683e59fef2"
  end
end

Embedded (__END__) patches are declared like so:

patch :DATA
patch :p0, :DATA

Patches can also be embedded by passing a string. This makes it possible to provide multiple embedded patches while making only some of them conditional.

patch :p0, "..."


2431
2432
2433
# File 'brew/Library/Homebrew/formula.rb', line 2431

def patch(strip = :p1, src = nil, &block)
  specs.each { |spec| spec.patch(strip, src, &block) }
end

.plist_options(options) ⇒ Object

Defines launchd plist handling.

Does your plist need to be loaded at startup?

plist_options :startup => true

Or only when necessary or desired by the user?

plist_options :manual => "foo"

Or perhaps you’d like to give the user a choice? Ooh fancy.

plist_options :startup => true, :manual => "foo start"


2445
2446
2447
2448
# File 'brew/Library/Homebrew/formula.rb', line 2445

def plist_options(options)
  @plist_startup = options[:startup]
  @plist_manual = options[:manual]
end

.pour_bottle?(&block) ⇒ Boolean

Defines whether the Formula’s bottle can be used on the given Homebrew installation.

For example, if the bottle requires the Xcode CLT to be installed a Formula would declare:

pour_bottle? do
  reason "The bottle needs the Xcode CLT to be installed."
  satisfy { MacOS::CLT.installed? }
end

If satisfy returns false then a bottle will not be used and instead the Formula will be built from source and reason will be printed.

Returns:

  • (Boolean)


2559
2560
2561
2562
# File 'brew/Library/Homebrew/formula.rb', line 2559

def pour_bottle?(&block)
  @pour_bottle_check = PourBottleCheck.new(self)
  @pour_bottle_check.instance_eval(&block)
end

.resource(name, klass = Resource, &block) ⇒ Object

Additional downloads can be defined as resources and accessed in the install method. Resources can also be defined inside a stable, devel or head block. This mechanism replaces ad-hoc “subformula” classes.

resource "additional_files" do
  url "https://example.com/additional-stuff.tar.gz"
  sha256 "c6bc3f48ce8e797854c4b865f6a8ff969867bbcaebd648ae6fd825683e59fef2"
end


2323
2324
2325
2326
2327
# File 'brew/Library/Homebrew/formula.rb', line 2323

def resource(name, klass = Resource, &block)
  specs.each do |spec|
    spec.resource(name, klass, &block) unless spec.resource_defined?(name)
  end
end

.skip_clean(*paths) ⇒ Object



2462
2463
2464
2465
2466
# File 'brew/Library/Homebrew/formula.rb', line 2462

def skip_clean(*paths)
  paths.flatten!
  # Specifying :all is deprecated and will become an error
  skip_clean_paths.merge(paths)
end

.test(&block) ⇒ Boolean

A test is required for new formulae and makes us happy. The block will create, run in and delete a temporary directory.

We are fine if the executable does not error out, so we know linking and building the software was OK.

system bin/"foobar", "--version"
(testpath/"test.file").write <<~EOS
  writing some test file, if you need to
EOS
assert_equal "OK", shell_output("test_command test.file").strip

Need complete control over stdin, stdout?

require "open3"
Open3.popen3("#{bin}/example", "argument") do |stdin, stdout, _|
  stdin.write("some text")
  stdin.close
  assert_equal "result", stdout.read
end

The test will fail if it returns false, or if an exception is raised. Failed assertions and failed system commands will raise exceptions.

Returns:

  • (Boolean)


2543
2544
2545
# File 'brew/Library/Homebrew/formula.rb', line 2543

def test(&block)
  define_method(:test, &block)
end

.uses_from_macos(dep, **args) ⇒ Object



2370
2371
2372
# File 'brew/Library/Homebrew/formula.rb', line 2370

def uses_from_macos(dep, **args)
  specs.each { |spec| spec.uses_from_macos(dep, args) }
end

Instance Method Details

#active_log_prefixObject

The prefix, if any, to use in filenames for logging current activity



852
853
854
855
856
857
858
# File 'brew/Library/Homebrew/formula.rb', line 852

def active_log_prefix
  if active_log_type
    "#{active_log_type}."
  else
    ""
  end
end

#alias_changed?Boolean

Has the alias used to install the formula changed, or are different formulae already installed with this alias?

Returns:

  • (Boolean)


1234
1235
1236
# File 'brew/Library/Homebrew/formula.rb', line 1234

def alias_changed?
  installed_alias_target_changed? || supersedes_an_installed_formula?
end

#aliasesObject

All aliases for the formula



413
414
415
416
417
418
419
420
421
# File 'brew/Library/Homebrew/formula.rb', line 413

def aliases
  @aliases ||= if tap
    tap.alias_reverse_table[full_name].to_a.map do |a|
      a.split("/").last
    end
  else
    []
  end
end

#bash_completionObject

The directory where the formula’s Bash completion files should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.



817
818
819
# File 'brew/Library/Homebrew/formula.rb', line 817

def bash_completion
  prefix/"etc/bash_completion.d"
end

#binObject

The directory where the formula’s binaries should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Need to install into the #bin but the makefile doesn’t mkdir -p prefix/bin?

bin.mkpath

No make install available?

bin.install "binary1"


600
601
602
# File 'brew/Library/Homebrew/formula.rb', line 600

def bin
  prefix/"bin"
end

#caveatsString

Warn the user about any Homebrew-specific issues or quirks for this package These should not contain setup instructions that would apply to installation through a different package manager on a different OS.

def caveats
  <<~EOS
    Are optional. Something the user must be warned about?
  EOS
end
def caveats
  s = <<~EOS
    Print some important notice to the user when `brew info [formula]` is
    called or when brewing a formula.
    This is optional. You can use all the vars like #{version} here.
  EOS
  s += "Some issue only on older systems" if MacOS.version < :el_capitan
  s
end

Returns:



1034
1035
1036
# File 'brew/Library/Homebrew/formula.rb', line 1034

def caveats
  nil
end

#current_installed_alias_targetObject



1214
1215
1216
# File 'brew/Library/Homebrew/formula.rb', line 1214

def current_installed_alias_target
  Formulary.factory(installed_alias_path) if installed_alias_path
end

#descObject

The description of the software.

See Also:



346
# File 'brew/Library/Homebrew/formula.rb', line 346

delegate desc: :"self.class"

#docObject

The directory where the formula’s documentation should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.



607
608
609
# File 'brew/Library/Homebrew/formula.rb', line 607

def doc
  share/"doc"/name
end

#elispObject

The directory where Emacs Lisp files should be installed, with the formula name appended to avoid linking conflicts.

Install an Emacs mode included with a software package:

elisp.install "contrib/emacs/example-mode.el"


761
762
763
# File 'brew/Library/Homebrew/formula.rb', line 761

def elisp
  prefix/"share/emacs/site-lisp"/name
end

#etcObject

The directory where the formula’s configuration files should be installed. Anything using etc.install will not overwrite other files on e.g. upgrades but will write a new file named *.default. This directory is not inside the HOMEBREW_CELLAR so it persists across upgrades.



786
787
788
# File 'brew/Library/Homebrew/formula.rb', line 786

def etc
  (HOMEBREW_PREFIX/"etc").extend(InstallRenamed)
end

#fish_completionObject

The directory where the formula’s fish completion files should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.



833
834
835
# File 'brew/Library/Homebrew/formula.rb', line 833

def fish_completion
  share/"fish/vendor_completions.d"
end

#fish_functionObject

The directory where the formula’s fish function files should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.



809
810
811
# File 'brew/Library/Homebrew/formula.rb', line 809

def fish_function
  share/"fish/vendor_functions.d"
end

#frameworksObject

The directory where the formula’s Frameworks should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only. This is not symlinked into HOMEBREW_PREFIX.



769
770
771
# File 'brew/Library/Homebrew/formula.rb', line 769

def frameworks
  prefix/"Frameworks"
end

#full_installed_alias_nameObject



280
281
282
# File 'brew/Library/Homebrew/formula.rb', line 280

def full_installed_alias_name
  full_name_with_optional_tap(installed_alias_name)
end

#full_installed_specified_nameObject

The name (including tap) specified to install this formula.



305
306
307
# File 'brew/Library/Homebrew/formula.rb', line 305

def full_installed_specified_name
  full_installed_alias_name || full_name
end

#full_specified_nameObject

The name (including tap) specified to find this formula.



295
296
297
# File 'brew/Library/Homebrew/formula.rb', line 295

def full_specified_name
  full_alias_name || full_name
end

#head_version_outdated?(version, fetch_head: false) ⇒ Boolean

Returns:

  • (Boolean)


498
499
500
501
502
503
504
505
506
507
508
509
510
# File 'brew/Library/Homebrew/formula.rb', line 498

def head_version_outdated?(version, fetch_head: false)
  tab = Tab.for_keg(prefix(version))

  return true if tab.version_scheme < version_scheme
  return true if stable && tab.stable_version && tab.stable_version < stable.version
  return true if devel && tab.devel_version && tab.devel_version < devel.version
  return false unless fetch_head
  return false unless head&.downloader.is_a?(VCSDownloadStrategy)

  downloader = head.downloader
  downloader.shutup! unless ARGV.verbose?
  downloader.commit_outdated?(version.version.commit)
end

#homepageObject

The homepage for the software.

See Also:



351
# File 'brew/Library/Homebrew/formula.rb', line 351

delegate homepage: :"self.class"

#includeObject

The directory where the formula’s headers should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

No make install available?

include.install "example.h"


617
618
619
# File 'brew/Library/Homebrew/formula.rb', line 617

def include
  prefix/"include"
end

#infoObject

The directory where the formula’s info files should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.



624
625
626
# File 'brew/Library/Homebrew/formula.rb', line 624

def info
  share/"info"
end

#inreplace(paths, before = nil, after = nil) ⇒ Object

Actually implemented in Utils::Inreplace.inreplace. Sometimes we have to change a bit before we install. Mostly we prefer a patch but if you need the prefix of this formula in the patch you have to resort to inreplace, because in the patch you don’t have access to any var defined by the formula. Only HOMEBREW_PREFIX is available in the embedded patch.

inreplace supports regular expressions:

inreplace "somefile.cfg", /look[for]what?/, "replace by #{bin}/tool"


# File 'brew/Library/Homebrew/formula.rb', line 57

#installObject

This method is overridden in Formula subclasses to provide the installation instructions. The sources (from url) are downloaded, hash-checked and Homebrew changes into a temporary directory where the archive was unpacked or repository cloned.

def install
  system "./configure", "--prefix=#{prefix}"
  system "make", "install"
end


1771
# File 'brew/Library/Homebrew/formula.rb', line 1771

def install; end

#installed_alias_nameObject



276
277
278
# File 'brew/Library/Homebrew/formula.rb', line 276

def installed_alias_name
  File.basename(installed_alias_path) if installed_alias_path
end

#installed_alias_pathObject

The alias path that was used to install this formula, if it exists. Can differ from #alias_path, which is the alias used to find the formula, and is specified to this instance.



268
269
270
271
272
273
274
# File 'brew/Library/Homebrew/formula.rb', line 268

def installed_alias_path
  path = build.source["path"] if build.is_a?(Tab)
  return unless path&.match?(%r{#{HOMEBREW_TAP_DIR_REGEX}/Aliases})
  return unless File.symlink?(path)

  path
end

#installed_alias_target_changed?Boolean

Has the target of the alias used to install this formula changed? Returns false if the formula wasn’t installed with an alias.

Returns:

  • (Boolean)


1220
1221
1222
1223
1224
1225
# File 'brew/Library/Homebrew/formula.rb', line 1220

def installed_alias_target_changed?
  target = current_installed_alias_target
  return false unless target

  target.name != name
end

#installed_specified_nameObject

The name specified to install this formula.



300
301
302
# File 'brew/Library/Homebrew/formula.rb', line 300

def installed_specified_name
  installed_alias_name || name
end

#keg_only?Boolean

Rarely, you don’t want your library symlinked into the main prefix. See gettext.rb for an example.

Returns:

  • (Boolean)


1040
1041
1042
1043
1044
# File 'brew/Library/Homebrew/formula.rb', line 1040

def keg_only?
  return false unless keg_only_reason

  keg_only_reason.valid?
end

#kext_prefixObject

The directory where the formula’s kernel extensions should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only. This is not symlinked into HOMEBREW_PREFIX.



777
778
779
# File 'brew/Library/Homebrew/formula.rb', line 777

def kext_prefix
  prefix/"Library/Extensions"
end

#latest_formulaObject

If the alias has changed value, return the new formula. Otherwise, return self.



1240
1241
1242
# File 'brew/Library/Homebrew/formula.rb', line 1240

def latest_formula
  installed_alias_target_changed? ? current_installed_alias_target : self
end

#latest_head_prefixObject



493
494
495
496
# File 'brew/Library/Homebrew/formula.rb', line 493

def latest_head_prefix
  head_version = latest_head_version
  prefix(head_version) if head_version
end

#latest_head_versionObject



482
483
484
485
486
487
488
489
490
491
# File 'brew/Library/Homebrew/formula.rb', line 482

def latest_head_version
  head_versions = installed_prefixes.map do |pn|
    pn_pkgversion = PkgVersion.parse(pn.basename.to_s)
    pn_pkgversion if pn_pkgversion.head?
  end.compact

  head_versions.max_by do |pn_pkgversion|
    [Tab.for_keg(prefix(pn_pkgversion)).source_modified_time, pn_pkgversion.revision]
  end
end

#libObject

The directory where the formula’s libraries should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

No make install available?

lib.install "example.dylib"


634
635
636
# File 'brew/Library/Homebrew/formula.rb', line 634

def lib
  prefix/"lib"
end

#libexecObject

The directory where the formula’s binaries should be installed. This is not symlinked into HOMEBREW_PREFIX. It is also commonly used to install files that we do not wish to be symlinked into HOMEBREW_PREFIX from one of the other directories and instead manually create symlinks or wrapper scripts into e.g. #bin.



643
644
645
# File 'brew/Library/Homebrew/formula.rb', line 643

def libexec
  prefix/"libexec"
end

#linked?Boolean

Is the formula linked?

Returns:

  • (Boolean)


549
550
551
# File 'brew/Library/Homebrew/formula.rb', line 549

def linked?
  linked_keg.symlink?
end

#linked_versionObject

PkgVersion of the linked keg for the formula.



566
567
568
569
570
# File 'brew/Library/Homebrew/formula.rb', line 566

def linked_version
  return unless linked?

  Keg.for(linked_keg).version
end

#manObject

The root directory where the formula’s manual pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only. Often one of the more specific man functions should be used instead, e.g. #man1



652
653
654
# File 'brew/Library/Homebrew/formula.rb', line 652

def man
  share/"man"
end

#man1Object

The directory where the formula’s man1 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

No make install available?

man1.install "example.1"


662
663
664
# File 'brew/Library/Homebrew/formula.rb', line 662

def man1
  man/"man1"
end

#man2Object

The directory where the formula’s man2 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.



669
670
671
# File 'brew/Library/Homebrew/formula.rb', line 669

def man2
  man/"man2"
end

#man3Object

The directory where the formula’s man3 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

No make install available?

man3.install "man.3"


679
680
681
# File 'brew/Library/Homebrew/formula.rb', line 679

def man3
  man/"man3"
end

#man4Object

The directory where the formula’s man4 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.



686
687
688
# File 'brew/Library/Homebrew/formula.rb', line 686

def man4
  man/"man4"
end

#man5Object

The directory where the formula’s man5 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.



693
694
695
# File 'brew/Library/Homebrew/formula.rb', line 693

def man5
  man/"man5"
end

#man6Object

The directory where the formula’s man6 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.



700
701
702
# File 'brew/Library/Homebrew/formula.rb', line 700

def man6
  man/"man6"
end

#man7Object

The directory where the formula’s man7 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.



707
708
709
# File 'brew/Library/Homebrew/formula.rb', line 707

def man7
  man/"man7"
end

#man8Object

The directory where the formula’s man8 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.



714
715
716
# File 'brew/Library/Homebrew/formula.rb', line 714

def man8
  man/"man8"
end

#migration_needed?Boolean

Returns:

  • (Boolean)


1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
# File 'brew/Library/Homebrew/formula.rb', line 1160

def migration_needed?
  return false unless oldname
  return false if rack.exist?

  old_rack = HOMEBREW_CELLAR/oldname
  return false unless old_rack.directory?
  return false if old_rack.subdirs.empty?

  tap == Tab.for_keg(old_rack.subdirs.min).tap
end

#missing_dependencies(hide: nil) ⇒ Object

Returns a list of formulae depended on by this formula that aren’t installed



1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
# File 'brew/Library/Homebrew/formula.rb', line 1586

def missing_dependencies(hide: nil)
  hide ||= []
  runtime_formula_dependencies.select do |f|
    hide.include?(f.name) || f.installed_prefixes.empty?
  end
# If we're still getting unavailable formulae at this stage the best we can
# do is just return no results.
rescue FormulaUnavailableError
  []
end

#mkdir(name) ⇒ Object

A version of FileUtils.mkdir that also changes to that folder in a block.



1980
1981
1982
1983
1984
1985
1986
1987
# File 'brew/Library/Homebrew/formula.rb', line 1980

def mkdir(name)
  result = FileUtils.mkdir_p(name)
  return result unless block_given?

  FileUtils.chdir name do
    yield
  end
end

#mktemp(prefix = name, opts = {}) ⇒ Object

Create a temporary directory then yield. When the block returns, recursively delete the temporary directory. Passing opts[:retain] or calling do |staging| ... staging.retain! in the block will skip the deletion and retain the temporary directory’s contents.



1972
1973
1974
1975
1976
# File 'brew/Library/Homebrew/formula.rb', line 1972

def mktemp(prefix = name, opts = {})
  Mktemp.new(prefix, opts).run do |staging|
    yield staging
  end
end

#new_formula_available?Boolean

Returns:

  • (Boolean)


1210
1211
1212
# File 'brew/Library/Homebrew/formula.rb', line 1210

def new_formula_available?
  installed_alias_target_changed? && !latest_formula.installed?
end

#old_installed_formulaeObject



1244
1245
1246
1247
1248
1249
1250
1251
# File 'brew/Library/Homebrew/formula.rb', line 1244

def old_installed_formulae
  # If this formula isn't the current target of the alias,
  # it doesn't make sense to say that other formulae are older versions of it
  # because we don't know which came first.
  return [] if alias_path.nil? || installed_alias_target_changed?

  self.class.installed_with_alias_path(alias_path).reject { |f| f.name == name }
end

#oldnameObject

An old name for the formula



405
406
407
408
409
410
# File 'brew/Library/Homebrew/formula.rb', line 405

def oldname
  @oldname ||= if tap
    formula_renames = tap.formula_renames
    formula_renames.to_a.rassoc(name).first if formula_renames.value?(name)
  end
end

#opt_binObject



930
931
932
# File 'brew/Library/Homebrew/formula.rb', line 930

def opt_bin
  opt_prefix/"bin"
end

#opt_elispObject



958
959
960
# File 'brew/Library/Homebrew/formula.rb', line 958

def opt_elisp
  opt_prefix/"share/emacs/site-lisp"/name
end

#opt_frameworksObject



962
963
964
# File 'brew/Library/Homebrew/formula.rb', line 962

def opt_frameworks
  opt_prefix/"Frameworks"
end

#opt_includeObject



934
935
936
# File 'brew/Library/Homebrew/formula.rb', line 934

def opt_include
  opt_prefix/"include"
end

#opt_libObject



938
939
940
# File 'brew/Library/Homebrew/formula.rb', line 938

def opt_lib
  opt_prefix/"lib"
end

#opt_libexecObject



942
943
944
# File 'brew/Library/Homebrew/formula.rb', line 942

def opt_libexec
  opt_prefix/"libexec"
end

#opt_pkgshareObject



954
955
956
# File 'brew/Library/Homebrew/formula.rb', line 954

def opt_pkgshare
  opt_prefix/"share"/name
end

#opt_prefixObject

A stable path for this formula, when installed. Contains the formula name but no version number. Only the active version will be linked here if multiple versions are installed.

This is the preferred way to refer to a formula in plists or from another formula, as the path is stable even when the software is updated.

args << "--with-readline=#{Formula["readline"].opt_prefix}" if build.with? "readline"


926
927
928
# File 'brew/Library/Homebrew/formula.rb', line 926

def opt_prefix
  Pathname.new("#{HOMEBREW_PREFIX}/opt/#{name}")
end

#opt_sbinObject



946
947
948
# File 'brew/Library/Homebrew/formula.rb', line 946

def opt_sbin
  opt_prefix/"sbin"
end

#opt_shareObject



950
951
952
# File 'brew/Library/Homebrew/formula.rb', line 950

def opt_share
  opt_prefix/"share"
end

#option_defined?Object

If a named option is defined for the currently active SoftwareSpec.



456
# File 'brew/Library/Homebrew/formula.rb', line 456

delegate option_defined?: :active_spec

#optlinked?Boolean

Is the formula linked to opt?

Returns:

  • (Boolean)


554
555
556
# File 'brew/Library/Homebrew/formula.rb', line 554

def optlinked?
  opt_prefix.symlink?
end

#pkg_versionObject

The PkgVersion for this formula with version and #revision information.



377
378
379
# File 'brew/Library/Homebrew/formula.rb', line 377

def pkg_version
  PkgVersion.new(version, revision)
end

#pkgshareObject

The directory where the formula’s shared files should be installed, with the name of the formula appended to avoid linking conflicts. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

No make install available?

pkgshare.install "examples"


752
753
754
# File 'brew/Library/Homebrew/formula.rb', line 752

def pkgshare
  prefix/"share"/name
end

#plistObject

This method can be overridden to provide a plist.

def plist; <<~EOS
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
   <key>Label</key>
     <string>#{plist_name}</string>
   <key>ProgramArguments</key>
   <array>
     <string>#{opt_bin}/example</string>
     <string>--do-this</string>
   </array>
   <key>RunAtLoad</key>
   <true />
   <key>KeepAlive</key>
   <true />
   <key>StandardErrorPath</key>
   <string>/dev/null</string>
   <key>StandardOutPath</key>
   <string>/dev/null</string>
 </dict>
 </plist>
 EOS
end


895
896
897
# File 'brew/Library/Homebrew/formula.rb', line 895

def plist
  nil
end

#plist_nameObject

The generated launchd #plist service name.



900
901
902
# File 'brew/Library/Homebrew/formula.rb', line 900

def plist_name
  "homebrew.mxcl." + name
end

#plist_pathObject

The generated launchd #plist file path.



905
906
907
# File 'brew/Library/Homebrew/formula.rb', line 905

def plist_path
  prefix + (plist_name + ".plist")
end

#post_installObject

Can be overridden to run commands on both source and bottle installation.



982
# File 'brew/Library/Homebrew/formula.rb', line 982

def post_install; end

#pour_bottle?Boolean

Indicates that this formula supports bottles. (Not necessarily that one should be used in the current installation run.) Can be overridden to selectively disable bottles from formulae. Defaults to true so overridden version does not have to check if bottles are supported. Replaced by pour_bottle’s satisfy method if it is specified.

Returns:

  • (Boolean)


972
973
974
# File 'brew/Library/Homebrew/formula.rb', line 972

def pour_bottle?
  true
end

#prefix(v = pkg_version) ⇒ Object

The directory in the cellar that the formula is installed to. This directory points to #opt_prefix if it exists and if ##prefix is not called from within the same formula’s #install or #post_install methods. Otherwise, return the full path to the formula’s versioned cellar.



538
539
540
541
542
543
544
545
546
# File 'brew/Library/Homebrew/formula.rb', line 538

def prefix(v = pkg_version)
  versioned_prefix = versioned_prefix(v)
  if !@prefix_returns_versioned_prefix && v == pkg_version &&
     versioned_prefix.directory? && Keg.new(versioned_prefix).optlinked?
    opt_prefix
  else
    versioned_prefix
  end
end

#prefix_linked?(v = pkg_version) ⇒ Boolean

If a formula’s linked keg points to the prefix.

Returns:

  • (Boolean)


559
560
561
562
563
# File 'brew/Library/Homebrew/formula.rb', line 559

def prefix_linked?(v = pkg_version)
  return false unless linked?

  linked_keg.resolved_path == versioned_prefix(v)
end

#resourceObject

A named Resource for the currently active SoftwareSpec. Additional downloads can be defined as #resources. Resource#stage will create a temporary directory and yield to a block.

resource("additional_files").stage { bin.install "my/extra/tool" }


402
# File 'brew/Library/Homebrew/formula.rb', line 402

delegate resource: :active_spec

#resourcesObject

The Resources for the currently active SoftwareSpec.



425
# File 'brew/Library/Homebrew/formula.rb', line 425

def_delegator :"active_spec.resources", :values, :resources

#runtime_installed_formula_dependentsObject



1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
# File 'brew/Library/Homebrew/formula.rb', line 1567

def runtime_installed_formula_dependents
  # `opt_or_installed_prefix_keg` and `runtime_dependencies` `select`s ensure
  # that we don't end up with something `Formula#runtime_dependencies` can't
  # read from a `Tab`.
  Formula.cache[:runtime_installed_formula_dependents] = {}
  Formula.cache[:runtime_installed_formula_dependents][name] ||= Formula.installed
                                                                        .select(&:opt_or_installed_prefix_keg)
                                                                        .select(&:runtime_dependencies)
                                                                        .select do |f|
    f.runtime_formula_dependencies.any? do |dep|
      full_name == dep.full_name
    rescue
      name == dep.name
    end
  end
end

#sbinObject

The directory where the formula’s sbin binaries should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only. Generally we try to migrate these to #bin instead.



722
723
724
# File 'brew/Library/Homebrew/formula.rb', line 722

def sbin
  prefix/"sbin"
end

#shareObject

The directory where the formula’s shared files should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Need a custom directory?

(share/"concept").mkpath

Installing something into another custom directory?

(share/"concept2").install "ducks.txt"

Install ./example_code/simple/ones to share/demos

(share/"demos").install "example_code/simple/ones"

Install ./example_code/simple/ones to share/demos/examples

(share/"demos").install "example_code/simple/ones" => "examples"


741
742
743
# File 'brew/Library/Homebrew/formula.rb', line 741

def share
  prefix/"share"
end

#skip_cxxstdlib_check?Boolean

Returns:

  • (Boolean)


1103
1104
1105
# File 'brew/Library/Homebrew/formula.rb', line 1103

def skip_cxxstdlib_check?
  false
end

#specified_nameObject

The name specified to find this formula.



290
291
292
# File 'brew/Library/Homebrew/formula.rb', line 290

def specified_name
  alias_name || name
end

#specified_pathObject

The path that was specified to find this formula.



285
286
287
# File 'brew/Library/Homebrew/formula.rb', line 285

def specified_path
  alias_path || path
end

#std_cmake_argsObject

Standard parameters for CMake builds. Setting CMAKE_FIND_FRAMEWORK to “LAST” tells CMake to search for our libraries before trying to utilize Frameworks, many of which will be from 3rd party installs. Note: there isn’t a std_autotools variant because autotools is a lot less consistent and the standard parameters are more memorable.



1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
# File 'brew/Library/Homebrew/formula.rb', line 1320

def std_cmake_args
  args = %W[
    -DCMAKE_C_FLAGS_RELEASE=-DNDEBUG
    -DCMAKE_CXX_FLAGS_RELEASE=-DNDEBUG
    -DCMAKE_INSTALL_PREFIX=#{prefix}
    -DCMAKE_BUILD_TYPE=Release
    -DCMAKE_FIND_FRAMEWORK=LAST
    -DCMAKE_VERBOSE_MAKEFILE=ON
    -Wno-dev
  ]

  # Avoid false positives for clock_gettime support on 10.11.
  # CMake cache entries for other weak symbols may be added here as needed.
  args << "-DHAVE_CLOCK_GETTIME:INTERNAL=0" if MacOS.version == "10.11" && MacOS::Xcode.version >= "8.0"

  args
end

#supersedes_an_installed_formula?Boolean

Is this formula the target of an alias used to install an old formula?

Returns:

  • (Boolean)


1228
1229
1230
# File 'brew/Library/Homebrew/formula.rb', line 1228

def supersedes_an_installed_formula?
  old_installed_formulae.any?
end

#system(cmd, *args) ⇒ Object

To call out to the system, we use the system method and we prefer you give the args separately as in the line below, otherwise a subshell has to be opened first.

system "./bootstrap.sh", "--arg1", "--prefix=#{prefix}"

For CMake we have some necessary defaults in #std_cmake_args:

system "cmake", ".", *std_cmake_args

If the arguments given to configure (or make or cmake) are depending on options defined above, we usually make a list first and then use the args << if <condition> to append to:

args = ["--with-option1", "--with-option2"]

# Most software still uses `configure` and `make`.
# Check with `./configure --help` what our options are.
system "./configure", "--disable-debug", "--disable-dependency-tracking",
                      "--disable-silent-rules", "--prefix=#{prefix}",
                      *args # our custom arg list (needs `*` to unpack)

# If there is a "make", "install" available, please use it!
system "make", "install"


1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
# File 'brew/Library/Homebrew/formula.rb', line 1838

def system(cmd, *args)
  verbose = ARGV.verbose?
  verbose_using_dots = !ENV["HOMEBREW_VERBOSE_USING_DOTS"].nil?

  # remove "boring" arguments so that the important ones are more likely to
  # be shown considering that we trim long ohai lines to the terminal width
  pretty_args = args.dup
  if cmd == "./configure" && !verbose
    pretty_args.delete "--disable-dependency-tracking"
    pretty_args.delete "--disable-debug"
  end
  pretty_args.each_index do |i|
    pretty_args[i] = "import setuptools..." if pretty_args[i].to_s.start_with? "import setuptools"
  end
  ohai "#{cmd} #{pretty_args * " "}".strip

  @exec_count ||= 0
  @exec_count += 1
  logfn = format("#{logs}/#{active_log_prefix}%02<exec_count>d.%<cmd_base>s",
                 exec_count: @exec_count,
                 cmd_base:   File.basename(cmd).split(" ").first)
  logs.mkpath

  File.open(logfn, "w") do |log|
    log.puts Time.now, "", cmd, args, ""
    log.flush

    if verbose
      rd, wr = IO.pipe
      begin
        pid = fork do
          rd.close
          log.close
          exec_cmd(cmd, args, wr, logfn)
        end
        wr.close

        if verbose_using_dots
          last_dot = Time.at(0)
          while buf = rd.gets
            log.puts buf
            # make sure dots printed with interval of at least 1 min.
            next unless (Time.now - last_dot) > 60

            print "."
            $stdout.flush
            last_dot = Time.now
          end
          puts
        else
          while buf = rd.gets
            log.puts buf
            puts buf
          end
        end
      ensure
        rd.close
      end
    else
      pid = fork { exec_cmd(cmd, args, log, logfn) }
    end

    Process.wait(pid)

    $stdout.flush

    unless $CHILD_STATUS.success?
      log_lines = ENV["HOMEBREW_FAIL_LOG_LINES"]
      log_lines ||= "15"

      log.flush
      if !verbose || verbose_using_dots
        puts "Last #{log_lines} lines from #{logfn}:"
        Kernel.system "/usr/bin/tail", "-n", log_lines, logfn
      end
      log.puts

      require "system_config"
      require "build_environment"

      env = ENV.to_hash

      SystemConfig.dump_verbose_config(log)
      log.puts
      Homebrew.dump_build_env(env, log)

      raise BuildError.new(self, cmd, args, env)
    end
  end
end

#to_sObject



1305
1306
1307
# File 'brew/Library/Homebrew/formula.rb', line 1305

def to_s
  name
end

#update_head_versionObject



360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
# File 'brew/Library/Homebrew/formula.rb', line 360

def update_head_version
  return unless head?
  return unless head.downloader.is_a?(VCSDownloadStrategy)
  return unless head.downloader.cached_location.exist?

  path = if ENV["HOMEBREW_ENV"]
    ENV["PATH"]
  else
    ENV["HOMEBREW_PATH"]
  end

  with_env(PATH: path) do
    head.version.update_commit(head.downloader.last_commit)
  end
end

#varObject

The directory where the formula’s variable files should be installed. This directory is not inside the HOMEBREW_CELLAR so it persists across upgrades.



793
794
795
# File 'brew/Library/Homebrew/formula.rb', line 793

def var
  HOMEBREW_PREFIX/"var"
end

#versionObject

The version for the currently active SoftwareSpec. The version is autodetected from the URL and/or tag so only needs to be declared if it cannot be autodetected correctly.

See Also:



358
# File 'brew/Library/Homebrew/formula.rb', line 358

delegate version: :active_spec

#versioned_formula?Boolean

If this is a @-versioned formula.

Returns:

  • (Boolean)


382
383
384
# File 'brew/Library/Homebrew/formula.rb', line 382

def versioned_formula?
  name.include?("@")
end

#versioned_formulaeObject

Returns any @-versioned formulae for an non-@-versioned formula.



387
388
389
390
391
392
393
394
395
# File 'brew/Library/Homebrew/formula.rb', line 387

def versioned_formulae
  return [] if versioned_formula?

  Pathname.glob(path.to_s.gsub(/\.rb$/, "@*.rb")).map do |path|
    Formula[path.basename(".rb").to_s]
  rescue FormulaUnavailableError
    nil
  end.compact.sort
end

#with_logging(log_type) ⇒ Object

Runs a block with the given log type in effect for its duration



861
862
863
864
865
866
867
# File 'brew/Library/Homebrew/formula.rb', line 861

def with_logging(log_type)
  old_log_type = @active_log_type
  @active_log_type = log_type
  yield
ensure
  @active_log_type = old_log_type
end

#xcodebuild(*args) ⇒ Object

Run xcodebuild without Homebrew’s compiler environment variables set.



1990
1991
1992
1993
1994
1995
# File 'brew/Library/Homebrew/formula.rb', line 1990

def xcodebuild(*args)
  removed = ENV.remove_cc_etc
  system "xcodebuild", *args
ensure
  ENV.update(removed)
end

#zsh_completionObject

The directory where the formula’s ZSH completion files should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.



825
826
827
# File 'brew/Library/Homebrew/formula.rb', line 825

def zsh_completion
  share/"zsh/site-functions"
end

#zsh_functionObject

The directory where the formula’s ZSH function files should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.



801
802
803
# File 'brew/Library/Homebrew/formula.rb', line 801

def zsh_function
  share/"zsh/site-functions"
end