1 files changed, 92 insertions, 0 deletions
diff --git a/Library/Homebrew/build.rb b/Library/Homebrew/build.rb
new file mode 100755
index 000000000..9844ef401
--- /dev/null
+++ b/Library/Homebrew/build.rb
@@ -0,0 +1,92 @@
+#!/usr/bin/ruby
+
+# This script is called by formula_installer as a separate instance.
+# Rationale: Formula can use __END__, Formula can change ENV
+# Thrown exceptions are propogated back to the parent process over a pipe
+
+ORIGINAL_PATHS = ENV['PATH'].split(':').map{ |p| File.expand_path p }
+
+require 'global'
+
+at_exit do
+  # the whole of everything must be run in at_exit because the formula has to
+  # be the run script as __END__ must work for *that* formula.
+
+  begin
+    raise $! if $! # an exception was already thrown when parsing the formula
+
+    require 'extend/ENV'
+    require 'hardware'
+    require 'keg'
+
+    ENV.extend(HomebrewEnvExtension)
+    ENV.setup_build_environment
+    # we must do this or tools like pkg-config won't get found by configure scripts etc.
+    ENV.prepend 'PATH', "#{HOMEBREW_PREFIX}/bin", ':' unless ORIGINAL_PATHS.include? "#{HOMEBREW_PREFIX}/bin"
+
+    install(Formula.factory($0))
+  rescue Exception => e
+    if ENV['HOMEBREW_ERROR_PIPE']
+      pipe = IO.new(ENV['HOMEBREW_ERROR_PIPE'].to_i, 'w')
+      Marshal.dump(e, pipe)
+      pipe.close
+      exit! 1
+    else
+      onoe e
+      puts e.backtrace
+      exit! 2
+    end
+  end
+end
+
+def install f
+  f.deps.uniq.each do |dep|
+    dep = Formula.factory dep
+    if dep.keg_only?
+      ENV.prepend 'LDFLAGS', "-L#{dep.lib}"
+      ENV.prepend 'CPPFLAGS', "-I#{dep.include}"
+      ENV.prepend 'PATH', "#{dep.bin}", ':'
+      ENV.prepend 'PKG_CONFIG_PATH', dep.lib+'pkgconfig', ':'
+    end
+  end
+
+  f.brew do
+    if ARGV.flag? '--interactive'
+      ohai "Entering interactive mode"
+      puts "Type `exit' to return and finalize the installation"
+      puts "Install to this prefix: #{f.prefix}"
+
+      if ARGV.flag? '--git'
+        system "git init"
+        system "git add -A"
+        puts "This folder is now a git repo. Make your changes and then use:"
+        puts "  git diff | pbcopy"
+        puts "to copy the diff to the clipboard."
+      end
+
+      interactive_shell f
+      nil
+    elsif ARGV.include? '--help'
+      system './configure --help'
+      exit $?
+    else
+      f.prefix.mkpath
+      f.install
+      FORMULA_META_FILES.each do |filename|
+        next if File.directory? filename
+        target_file = filename
+        target_file = "#{filename}.txt" if File.exists? "#{filename}.txt"
+        # Some software symlinks these files (see help2man.rb)
+        target_file = Pathname.new(target_file).resolved_path
+        f.prefix.install target_file => filename rescue nil
+        (f.prefix+file).chmod 0644 rescue nil
+      end
+    end
+  end
+rescue Exception
+  if f.prefix.directory?
+    f.prefix.rmtree
+    f.prefix.parent.rmdir_if_possible
+  end
+  raise
+end