Module: Superenv

Includes:
SharedEnvExtension
Defined in:
extend/os/mac/extend/ENV/super.rb,
extend/os/linux/extend/ENV/super.rb,
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 (fewer 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 formulae that just work
  8. Build-system agnostic configuration of the toolchain

Class Method Summary collapse

Instance Method Summary collapse

Methods included from SharedEnvExtension

#append, #append_path, #append_to_cccfg, #append_to_cflags, #cc, #cflags, #compiler, #cppflags, #cxx, #cxxflags, #fc, #fcflags, #fflags, #fortran, #ldflags, #no_weak_imports_support?, #prepend, #prepend_create_path, #prepend_path, #remove, #remove_cc_etc, #remove_from_cflags

Class Method Details

.extended(base) ⇒ void

This method returns an undefined value.

Parameters:



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# File 'extend/ENV/super.rb', line 26

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

.shims_path ⇒ Pathname

The location of Homebrew’s shims on this OS.

Returns:



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# File 'extend/os/mac/extend/ENV/super.rb', line 9

def shims_path
  HOMEBREW_SHIMS_PATH/"mac/super"
end

Instance Method Details

#cxx11 ⇒ void

This method returns an undefined value.



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# File 'extend/ENV/super.rb', line 334

def cxx11
  append_to_cccfg "x"
  append_to_cccfg "g" if homebrew_cc == "clang"
end

#deparallelize(&block) ⇒ T.untyped

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.

Parameters:

  • block (T.proc.returns(T.untyped))

Returns:

  • (T.untyped) 


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# File 'extend/ENV/super.rb', line 304

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

  old
end

#determine_dynamic_linker_path ⇒ String?

Returns:



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# File 'extend/os/linux/extend/ENV/super.rb', line 60

def determine_dynamic_linker_path
  path = "#{HOMEBREW_PREFIX}/lib/ld.so"
  return unless File.readable? path

  path
end

#determine_rpath_paths(formula) ⇒ Object 



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# File 'extend/os/linux/extend/ENV/super.rb', line 50

def determine_rpath_paths(formula)
  PATH.new(
    *formula&.lib,
    "#{HOMEBREW_PREFIX}/opt/gcc/lib/gcc/current",
    PATH.new(run_time_deps.map { |dep| dep.opt_lib.to_s }).existing,
    "#{HOMEBREW_PREFIX}/lib",
  )
end

#libcxx ⇒ void

This method returns an undefined value.



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# File 'extend/ENV/super.rb', line 340

def libcxx
  append_to_cccfg "g" if compiler == :clang
end

#make_jobs ⇒ Integer

Returns:

  • (Integer) 


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# File 'extend/ENV/super.rb', line 318

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 'extend/os/mac/extend/ENV/super.rb', line 136

def no_weak_imports
  append_to_cccfg "w" if no_weak_imports_support?
end

#O0(&block) ⇒ Object 



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# File 'extend/ENV/super.rb', line 358

def O0(&block)
  if block
    with_env(HOMEBREW_OPTIMIZATION_LEVEL: "O0", &block)
  else
    self["HOMEBREW_OPTIMIZATION_LEVEL"] = "O0"
  end
end

#O1(&block) ⇒ void

This method returns an undefined value.

Parameters:

  • block (T.proc.void, nil) 


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# File 'extend/ENV/super.rb', line 367

def O1(&block)
  if block
    with_env(HOMEBREW_OPTIMIZATION_LEVEL: "O1", &block)
  else
    self["HOMEBREW_OPTIMIZATION_LEVEL"] = "O1"
  end
end

#permit_arch_flags ⇒ void

This method returns an undefined value.



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# File 'extend/ENV/super.rb', line 324

def permit_arch_flags
  append_to_cccfg "K"
end

#reset ⇒ void

This method returns an undefined value.



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# File 'extend/ENV/super.rb', line 43

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

#runtime_cpu_detection ⇒ void

This method returns an undefined value.



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# File 'extend/ENV/super.rb', line 329

def runtime_cpu_detection
  append_to_cccfg "d"
end

#set_debug_symbols ⇒ void

This method returns an undefined value.



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# File 'extend/ENV/super.rb', line 345

def set_debug_symbols
  append_to_cccfg "D"
end