require 'formula'

class BerkeleyDb < Formula
  homepage 'http://www.oracle.com/technology/products/berkeley-db/index.html'
  url 'http://download.oracle.com/berkeley-db/db-5.3.21.tar.gz'
  sha1 '32e43c4898c8996750c958a90c174bd116fcba83'

  option 'with-java', 'Compile with Java support.'
  option 'enable-sql', 'Compile with SQL support.'

  # Fix build under Xcode 4.6
  # Double-underscore names are reserved, and __atomic_compare_exchange is now
  # a built-in, so rename this to something non-conflicting.
  def patches; DATA; end

  def install
    # BerkeleyDB dislikes parallel builds
    ENV.deparallelize
    # --enable-compat185 is necessary because our build shadows
    # the system berkeley db 1.x
    args = %W[
      --disable-debug
      --prefix=#{prefix}
      --mandir=#{man}
      --enable-cxx
      --enable-compat185
    ]
    args << "--enable-java" if build.include? "with-java"
    args << "--enable-sql" if build.include? "enable-sql"

    # BerkeleyDB requires you to build everything from the build_unix subdirectory
    cd 'build_unix' do
      system "../dist/configure", *args
      system "make install"

      # use the standard docs location
      doc.parent.mkpath
      mv prefix/'docs', doc
    end
  end
end

__END__
diff --git a/src/dbinc/atomic.h b/src/dbinc/atomic.h
index 096176a..561037a 100644
--- a/src/dbinc/atomic.h
+++ b/src/dbinc/atomic.h
@@ -144,7 +144,7 @@ typedef LONG volatile *interlocked_val;
 #define	atomic_inc(env, p)	__atomic_inc(p)
 #define	atomic_dec(env, p)	__atomic_dec(p)
 #define	atomic_compare_exchange(env, p, o, n)	\
-	__atomic_compare_exchange((p), (o), (n))
+	__atomic_compare_exchange_db((p), (o), (n))
 static inline int __atomic_inc(db_atomic_t *p)
 {
 	int	temp;
@@ -176,7 +176,7 @@ static inline int __atomic_dec(db_atomic_t *p)
  * http://gcc.gnu.org/onlinedocs/gcc-4.1.0/gcc/Atomic-Builtins.html
  * which configure could be changed to use.
  */
-static inline int __atomic_compare_exchange(
+static inline int __atomic_compare_exchange_db(
 	db_atomic_t *p, atomic_value_t oldval, atomic_value_t newval)
 {
 	atomic_value_t was;