3 files changed, 17 insertions, 1 deletions
diff --git a/Library/Homebrew/extend/ARGV.rb b/Library/Homebrew/extend/ARGV.rb
index 9241f02c6..0f78769c5 100644
--- a/Library/Homebrew/extend/ARGV.rb
+++ b/Library/Homebrew/extend/ARGV.rb
@@ -207,6 +207,20 @@ module HomebrewArgvExtension
     value "env"
   end
 
+  # If the user passes any flags that trigger building over installing from
+  # a bottle, they are collected here and returned as an Array for checking.
+  def collect_build_flags
+    build_flags = []
+
+    build_flags << '--HEAD' if build_head?
+    build_flags << '--universal' if build_universal?
+    build_flags << '--32-bit' if build_32_bit?
+    build_flags << '--build-bottle' if build_bottle?
+    build_flags << '--build-from-source' if build_from_source?
+
+    build_flags
+  end
+
   private
 
   def spec(default = :stable)
diff --git a/Library/Homebrew/extend/ENV/std.rb b/Library/Homebrew/extend/ENV/std.rb
index 6798e6cd3..d05ccf1a3 100644
--- a/Library/Homebrew/extend/ENV/std.rb
+++ b/Library/Homebrew/extend/ENV/std.rb
@@ -29,7 +29,7 @@ module Stdenv
     self["PKG_CONFIG_LIBDIR"] = determine_pkg_config_libdir
 
     # make any aclocal stuff installed in Homebrew available
-    self["ACLOCAL_PATH"] = "#{HOMEBREW_PREFIX}/share/aclocal" if MacOS::Xcode.provides_autotools?
+    self["ACLOCAL_PATH"] = "#{HOMEBREW_PREFIX}/share/aclocal" if MacOS.has_apple_developer_tools? && MacOS::Xcode.provides_autotools?
 
     self["MAKEFLAGS"] = "-j#{make_jobs}"
 
diff --git a/Library/Homebrew/extend/ENV/super.rb b/Library/Homebrew/extend/ENV/super.rb
index a59b54a1d..95a8773cd 100644
--- a/Library/Homebrew/extend/ENV/super.rb
+++ b/Library/Homebrew/extend/ENV/super.rb
@@ -23,6 +23,8 @@ module Superenv
   end
 
   def self.bin
+    return unless MacOS.has_apple_developer_tools?
+
     bin = (HOMEBREW_REPOSITORY/"Library/ENV").subdirs.reject { |d| d.basename.to_s > MacOS::Xcode.version }.max
     bin.realpath unless bin.nil?
   end