Stdenv: Add ENV.libxml2 and ENV.x11 for Linux

Add ENV.libxml2 primarily for the use of test do blocks.
Add a dummy ENV.x11 function.

See Linuxbrew/brew#356 and Linuxbrew/brew#382

1 files changed, 7 insertions, 0 deletions

diff --git a/Library/Homebrew/extend/os/linux/extend/ENV/std.rb b/Library/Homebrew/extend/os/linux/extend/ENV/std.rb
new file mode 100644
index 000000000..ed19d2495
--- /dev/null
+++ b/Library/Homebrew/extend/os/linux/extend/ENV/std.rb
@@ -0,0 +1,7 @@
+module Stdenv
+  def libxml2
+    append "CPPFLAGS", "-I#{Formula["libxml2"].include/"libxml2"}"
+  rescue FormulaUnavailableError
+    nil
+  end
+end