Download the BDB source code on demand.

.gitignore

@@ -8,3 +8,4 @@ test/test.cover
 int_test/test.cover
 bdberl-*
 priv/mibs
+c_src/db-*.tar.gz

Rakefile

@@ -22,19 +22,31 @@
 require 'erlbox'
 require 'erlbox/driver'
 require 'erlbox/snmp'
+require 'net/http'
 
 CLOBBER.include %w( c_src/system )
 
 UNIT_TEST_FLAGS << '+A10'
 INT_TEST_FLAGS << '+A10'
 
+DB_TARBALL = 'c_src/db-4.7.25.tar.gz'
 DB_LIB = "c_src/system/lib/libdb.a"
 
 CC_FLAGS << "-Ic_src/system/include -pthread"
 LD_LIBS  << DB_LIB
 LD_FLAGS << "-pthread"
 
-file DB_LIB do
+file DB_TARBALL do
+  puts "Downloading BerkeleyDB..."
+  # Not the fastest or most efficient method, but it works everywhere...
+  # This does not rely on curl or wget being installed.
+  Net::HTTP.start('download.oracle.com') do |http|
+    resp = http.get('/berkeley-db/db-4.7.25.tar.gz')
+    open(DB_TARBALL, "wb") {|file| file.write(resp.body) }
+  end
+end
+
+file DB_LIB => DB_TARBALL do
   sh "cd c_src && ./buildlib.sh 2>&1"
 end