Module: Superenv

Includes:
SharedEnvExtension
Defined in:
Library/Homebrew/extend/ENV/super.rb,
Library/Homebrew/extend/os/mac/extend/ENV/super.rb

Overview

### Why `superenv`?

  1. Only specify the environment we need (NO LDFLAGS for cmake)

  2. Only apply compiler specific options when we are calling that compiler

  3. Force all incpaths and libpaths into the cc instantiation (less bugs)

  4. Cater toolchain usage to specific Xcode versions

  5. Remove flags that we don't want or that will break builds

  6. Simpler code

  7. Simpler formula that *just work*

  8. Build-system agnostic configuration of the tool-chain

Constant Summary

Constants included from SharedEnvExtension

SharedEnvExtension::CC_FLAG_VARS, SharedEnvExtension::FC_FLAG_VARS, SharedEnvExtension::SANITIZED_VARS

Constants included from CompilerConstants

CompilerConstants::COMPILERS, CompilerConstants::COMPILER_SYMBOL_MAP, CompilerConstants::GNU_GCC_REGEXP, CompilerConstants::GNU_GCC_VERSIONS

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from SharedEnvExtension

#append, #append_path, #append_to_cflags, #cc, #cflags, #compiler, #cppflags, #cxx, #cxxflags, #determine_cc, #fc, #fcflags, #fflags, #fortran, #gcc_version_formula, #ld64, #ldflags, #ncurses_define, #no_weak_imports_support?, #permit_weak_imports, #prepend, #prepend_create_path, #prepend_path, #remove, #remove_cc_etc, #remove_from_cflags, #userpaths!, #warn_about_non_apple_gcc

Instance Attribute Details

#deps ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 18

def deps
  @deps
end

#keg_only_deps ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 18

def keg_only_deps
  @keg_only_deps
end

#x11 ⇒ Object Also known as: x11?

Returns the value of attribute x11



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# File 'Library/Homebrew/extend/ENV/super.rb', line 19

def x11
  @x11
end

Class Method Details

.bin ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 27

def self.bin; end

.extended(base) ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 21

def self.extended(base)
  base.keg_only_deps = []
  base.deps = []
end

Instance Method Details

#cxx11 ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 296

def cxx11
  if homebrew_cc == "clang"
    append "HOMEBREW_CCCFG", "x", ""
    append "HOMEBREW_CCCFG", "g", ""
  elsif gcc_with_cxx11_support?(homebrew_cc)
    append "HOMEBREW_CCCFG", "x", ""
  else
    raise "The selected compiler doesn't support C++11: #{homebrew_cc}"
  end
end

#deparallelize ⇒ Object

Removes the MAKEFLAGS environment variable, causing make to use a single job. This is useful for makefiles with race conditions. When passed a block, MAKEFLAGS is removed only for the duration of the block and is restored after its completion.



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# File 'Library/Homebrew/extend/ENV/super.rb', line 252

def deparallelize
  old = delete("MAKEFLAGS")
  if block_given?
    begin
      yield
    ensure
      self["MAKEFLAGS"] = old
    end
  end

  old
end

#determine_cccfg ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 243

def determine_cccfg
  ""
end

#effective_sysroot ⇒ Object 



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# File 'Library/Homebrew/extend/os/mac/extend/ENV/super.rb', line 11

def effective_sysroot
  MacOS.sdk_path.to_s if MacOS::Xcode.without_clt?
end

#generic_setup_build_environment ⇒ Object

The HOMEBREW_CCCFG ENV variable is used by the ENV/cc tool to control compiler flag stripping. It consists of a string of characters which act as flags. Some of these flags are mutually exclusive.

O - Enables argument refurbishing. Only active under the

make/bsdmake wrappers currently.

x - Enable C++11 mode. g - Enable “-stdlib=libc++” for clang. h - Enable “-stdlib=libstdc++” for clang. K - Don't strip -arch <arch>, -m32, or -m64 w - Pass -no_weak_imports to the linker

On 10.8 and newer, these flags will also be present: s - apply fix for sed's Unicode support a - apply fix for apr-1-config path



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# File 'Library/Homebrew/extend/ENV/super.rb', line 82

def setup_build_environment(formula = nil)
  super
  send(compiler)

  self["MAKEFLAGS"] ||= "-j#{determine_make_jobs}"
  self["PATH"] = determine_path
  self["PKG_CONFIG_PATH"] = determine_pkg_config_path
  self["PKG_CONFIG_LIBDIR"] = determine_pkg_config_libdir
  self["HOMEBREW_CCCFG"] = determine_cccfg
  self["HOMEBREW_OPTIMIZATION_LEVEL"] = "Os"
  self["HOMEBREW_BREW_FILE"] = HOMEBREW_BREW_FILE.to_s
  self["HOMEBREW_PREFIX"] = HOMEBREW_PREFIX.to_s
  self["HOMEBREW_CELLAR"] = HOMEBREW_CELLAR.to_s
  self["HOMEBREW_OPT"] = "#{HOMEBREW_PREFIX}/opt"
  self["HOMEBREW_TEMP"] = HOMEBREW_TEMP.to_s
  self["HOMEBREW_OPTFLAGS"] = determine_optflags
  self["HOMEBREW_ARCHFLAGS"] = ""
  self["CMAKE_PREFIX_PATH"] = determine_cmake_prefix_path
  self["CMAKE_FRAMEWORK_PATH"] = determine_cmake_frameworks_path
  self["CMAKE_INCLUDE_PATH"] = determine_cmake_include_path
  self["CMAKE_LIBRARY_PATH"] = determine_cmake_library_path
  self["ACLOCAL_PATH"] = determine_aclocal_path
  self["M4"] = DevelopmentTools.locate("m4") if deps.any? { |d| d.name == "autoconf" }
  self["HOMEBREW_ISYSTEM_PATHS"] = determine_isystem_paths
  self["HOMEBREW_INCLUDE_PATHS"] = determine_include_paths
  self["HOMEBREW_LIBRARY_PATHS"] = determine_library_paths
  self["HOMEBREW_DEPENDENCIES"] = determine_dependencies
  self["HOMEBREW_FORMULA_PREFIX"] = formula.prefix unless formula.nil?

  # The HOMEBREW_CCCFG ENV variable is used by the ENV/cc tool to control
  # compiler flag stripping. It consists of a string of characters which act
  # as flags. Some of these flags are mutually exclusive.
  #
  # O - Enables argument refurbishing. Only active under the
  #     make/bsdmake wrappers currently.
  # x - Enable C++11 mode.
  # g - Enable "-stdlib=libc++" for clang.
  # h - Enable "-stdlib=libstdc++" for clang.
  # K - Don't strip -arch <arch>, -m32, or -m64
  # w - Pass -no_weak_imports to the linker
  #
  # On 10.8 and newer, these flags will also be present:
  # s - apply fix for sed's Unicode support
  # a - apply fix for apr-1-config path
end

#homebrew_extra_aclocal_paths ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 144

def homebrew_extra_aclocal_paths
  []
end

#homebrew_extra_cmake_frameworks_paths ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 210

def homebrew_extra_cmake_frameworks_paths
  []
end

#homebrew_extra_cmake_include_paths ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 194

def homebrew_extra_cmake_include_paths
  []
end

#homebrew_extra_cmake_library_paths ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 202

def homebrew_extra_cmake_library_paths
  []
end

#homebrew_extra_isystem_paths ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 156

def homebrew_extra_isystem_paths
  []
end

#homebrew_extra_library_paths ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 171

def homebrew_extra_library_paths
  []
end

#homebrew_extra_paths ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 98

def homebrew_extra_paths
  []
end

#homebrew_extra_pkg_config_paths ⇒ Object 



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# File 'Library/Homebrew/extend/os/mac/extend/ENV/super.rb', line 29

def homebrew_extra_pkg_config_paths
  []
end

#libcxx ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 307

def libcxx
  append "HOMEBREW_CCCFG", "g", "" if compiler == :clang
end

#libstdcxx ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 311

def libstdcxx
  append "HOMEBREW_CCCFG", "h", "" if compiler == :clang
end

#m32 ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 288

def m32
  append "HOMEBREW_ARCHFLAGS", "-m32"
end

#m64 ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 292

def m64
  append "HOMEBREW_ARCHFLAGS", "-m64"
end

#make_jobs ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 265

def make_jobs
  self["MAKEFLAGS"] =~ /-\w*j(\d+)/
  [Regexp.last_match(1).to_i, 1].max
end

#no_weak_imports ⇒ Object 



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# File 'Library/Homebrew/extend/os/mac/extend/ENV/super.rb', line 122

def no_weak_imports
  append "HOMEBREW_CCCFG", "w" if no_weak_imports_support?
end

#permit_arch_flags ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 284

def permit_arch_flags
  append "HOMEBREW_CCCFG", "K"
end

#refurbish_args ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 316

def refurbish_args
  append "HOMEBREW_CCCFG", "O", ""
end

#reset ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 29

def reset
  super
  # Configure scripts generated by autoconf 2.61 or later export as_nl, which
  # we use as a heuristic for running under configure
  delete("as_nl")
end

#set_cpu_flags(_, _ = "", _ = {}) ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 328

def set_cpu_flags(_, _ = "", _ = {}); end

#set_x11_env_if_installed ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 326

def set_x11_env_if_installed; end

#setup_build_environment(formula = nil) ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 37

def setup_build_environment(formula = nil)
  super
  send(compiler)

  self["MAKEFLAGS"] ||= "-j#{determine_make_jobs}"
  self["PATH"] = determine_path
  self["PKG_CONFIG_PATH"] = determine_pkg_config_path
  self["PKG_CONFIG_LIBDIR"] = determine_pkg_config_libdir
  self["HOMEBREW_CCCFG"] = determine_cccfg
  self["HOMEBREW_OPTIMIZATION_LEVEL"] = "Os"
  self["HOMEBREW_BREW_FILE"] = HOMEBREW_BREW_FILE.to_s
  self["HOMEBREW_PREFIX"] = HOMEBREW_PREFIX.to_s
  self["HOMEBREW_CELLAR"] = HOMEBREW_CELLAR.to_s
  self["HOMEBREW_OPT"] = "#{HOMEBREW_PREFIX}/opt"
  self["HOMEBREW_TEMP"] = HOMEBREW_TEMP.to_s
  self["HOMEBREW_OPTFLAGS"] = determine_optflags
  self["HOMEBREW_ARCHFLAGS"] = ""
  self["CMAKE_PREFIX_PATH"] = determine_cmake_prefix_path
  self["CMAKE_FRAMEWORK_PATH"] = determine_cmake_frameworks_path
  self["CMAKE_INCLUDE_PATH"] = determine_cmake_include_path
  self["CMAKE_LIBRARY_PATH"] = determine_cmake_library_path
  self["ACLOCAL_PATH"] = determine_aclocal_path
  self["M4"] = DevelopmentTools.locate("m4") if deps.any? { |d| d.name == "autoconf" }
  self["HOMEBREW_ISYSTEM_PATHS"] = determine_isystem_paths
  self["HOMEBREW_INCLUDE_PATHS"] = determine_include_paths
  self["HOMEBREW_LIBRARY_PATHS"] = determine_library_paths
  self["HOMEBREW_DEPENDENCIES"] = determine_dependencies
  self["HOMEBREW_FORMULA_PREFIX"] = formula.prefix unless formula.nil?

  # The HOMEBREW_CCCFG ENV variable is used by the ENV/cc tool to control
  # compiler flag stripping. It consists of a string of characters which act
  # as flags. Some of these flags are mutually exclusive.
  #
  # O - Enables argument refurbishing. Only active under the
  #     make/bsdmake wrappers currently.
  # x - Enable C++11 mode.
  # g - Enable "-stdlib=libc++" for clang.
  # h - Enable "-stdlib=libstdc++" for clang.
  # K - Don't strip -arch <arch>, -m32, or -m64
  # w - Pass -no_weak_imports to the linker
  #
  # On 10.8 and newer, these flags will also be present:
  # s - apply fix for sed's Unicode support
  # a - apply fix for apr-1-config path
end

#universal_binary ⇒ Object 



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# File 'Library/Homebrew/extend/ENV/super.rb', line 270

def universal_binary
  check_for_compiler_universal_support

  self["HOMEBREW_ARCHFLAGS"] = Hardware::CPU.universal_archs.as_arch_flags

  # GCC doesn't accept "-march" for a 32-bit CPU with "-arch x86_64"
  return if compiler == :clang
  return unless Hardware::CPU.is_32_bit?
  self["HOMEBREW_OPTFLAGS"] = self["HOMEBREW_OPTFLAGS"].sub(
    /-march=\S*/,
    "-Xarch_#{Hardware::CPU.arch_32_bit} \\0",
  )
end