restore windows support

fixes #58

Author: Stephen von Takach

CHANGELOG.md

@@ -1,3 +1,11 @@
+3.0.1
+-----
+
+Fixed:
+
+* Windows support was broken in 3.0.0
+
+
 3.0.0
 -----
 

Rakefile

@@ -29,6 +29,8 @@ namespace "ffi-compiler" do
     t.cflags << "-D_GNU_SOURCE=1" if RbConfig::CONFIG["host_os"].downcase =~ /mingw/
     t.cflags << "-arch x86_64 -arch i386" if t.platform.mac?
     t.ldflags << "-arch x86_64 -arch i386" if t.platform.mac?
+
+    t.add_define 'WINDOWS_OS' if FFI::Platform.windows?
   end
 end
 task :compile_ffi => ["ffi-compiler:default"]

ext/scrypt/Rakefile

@@ -7,4 +7,6 @@ FFI::Compiler::CompileTask.new('scrypt_ext') do |t|
   t.cflags << "-arch x86_64 -arch i386" if t.platform.mac?
   t.ldflags << "-arch x86_64 -arch i386" if t.platform.mac?
   t.export '../../lib/scrypt/scrypt_ext.rb'
+
+  t.add_define 'WINDOWS_OS' if FFI::Platform.windows?
 end

ext/scrypt/crypto_scrypt.c

@@ -29,8 +29,12 @@
 /* #include "bsdtar_platform.h" */
 
 #include <sys/types.h>
-#include <sys/mman.h>
-
+#if !defined(WINDOWS_OS)
+ 	#include <sys/mman.h>
+ 	#ifndef HAVE_MMAP
+		#define HAVE_MMAP 1
+ 	#endif
+#endif
 #include <errno.h>
 #include <stdint.h>
 #include <stdlib.h>

lib/scrypt/version.rb

@@ -1,3 +1,3 @@
 module SCrypt
-  VERSION = "3.0.0"
+  VERSION = "3.0.1"
 end

scrypt.gemspec

@@ -19,7 +19,7 @@ Gem::Specification.new do |s|
     alternative functions such as PBKDF2 or bcrypt.
   EOF
 
-  s.add_dependency 'ffi-compiler', '>= 0.0.2'
+  s.add_dependency 'ffi-compiler', '>= 1.0.0'
   s.add_dependency 'rake'
   s.add_development_dependency "rspec"
   s.add_development_dependency "rdoc"