Correctly define FOLLY_HAVE_LINUX_MEMBARRIER_H

Summary: This should fix the build on 16.04

Reviewed By: paulbiss

Differential Revision: D3793065

fbshipit-source-id: afb2799f259181c082410ebca280329e26050697

Author: Orvid

CMake/FollySetup.cmake

@@ -63,3 +63,19 @@ if (FOLLY_HAVE_VLA)
 elseif()
   add_definitions("-DFOLLY_HAVE_VLA=0")
 endif()
+
+include(CheckIncludeFileCXX)
+check_include_file_cxx(bits/functexcept.h FOLLY_HAVE_BITS_FUNCTEXCEPT_H)
+if (FOLLY_HAVE_BITS_FUNCTEXCEPT_H)
+  add_definitions(-DFOLLY_HAVE_BITS_FUNCTEXCEPT_H=1)
+else()
+  add_definitions(-DFOLLY_HAVE_BITS_FUNCTEXCEPT_H=0)
+endif()
+
+include(CheckIncludeFile)
+check_include_file(linux/membarrier.h FOLLY_HAVE_LINUX_MEMBARRIER_H)
+if (FOLLY_HAVE_LINUX_MEMBARRIER_H)
+  add_definitions(-DFOLLY_HAVE_LINUX_MEMBARRIER_H=1)
+else()
+  add_definitions(-DFOLLY_HAVE_LINUX_MEMBARRIER_H=0)
+endif()