Fixed MinGW port

- The build no longer requires Cygwin
- Running the tests no longer requires setting CPP_COMPILER, TestUtil.py che
  for RI_DEVKIT in the environment to figure out if running with MinGW devki
- DynamicLibrary no longer appends the "d" suffix when compiling with debug
- COMPSUFFIX is now defined when compiling Ice
- Much simplified the build system by removing all the checks for MinGW
  in makefiles, MinGW settings are now located to Make.rules.MINGW only.
- Fixed allTests.py to skip plugin and metrics tests.
- Fixed build instructions.

36 files changed, 318 insertions, 443 deletions

diff --git a/config/Make.common.rules b/config/Make.common.rules
index 49f8b807624..b6c81422f70 100644
--- a/config/Make.common.rules
+++ b/config/Make.common.rules
@@ -69,6 +69,10 @@ ifeq ($(UNAME),Linux)
    endif
 endif
 
+ifneq ($(findstring MINGW,$(UNAME)),)
+    UNAME	:= MINGW
+endif
+
 ifeq ($(LP64),yes)
     libsubdir		:= lib$(lp64suffix)
     binsubdir		:= bin$(lp64binsuffix)
@@ -77,25 +81,6 @@ else
     binsubdir		:= bin
 endif
 
-
-ifeq ($(MinGW), yes)
-	ifneq ($(ICE_HOME), )
-		tmp = $(shell $(top_srcdir)/../cpp/config/cygpath-unix.sh "$(ICE_HOME)")
-		ifeq ($(shell test -d $(tmp) && echo 0), 0)
-			ICE_HOME		:=  $(shell $(top_srcdir)/../cpp/config/cygpath-unix.sh "$(ICE_HOME)")
-			ICE_HOME_WIN	:=  $(shell $(top_srcdir)/../cpp/config/cygpath-win.sh "$(ICE_HOME)")
-		endif
-	endif
-	ifneq ($(prefix),)
-		prefix		:=  $(shell $(top_srcdir)/../cpp/config/cygpath-unix.sh "$(prefix)")
-	endif
-	ifeq ($(THIRDPARTY_HOME),)
-		THIRDPARTY_HOME		= $(PROGRAMFILES)\ZeroC\Ice-$(VERSION)-ThirdParty
-	endif 
-	THIRDPARTY_HOME		:=  $(shell $(top_srcdir)/../cpp/config/cygpath-unix.sh "$(THIRDPARTY_HOME)")
-	THIRDPARTY_HOME_WIN	=  $(shell $(top_srcdir)/../cpp/config/cygpath-win.sh $(THIRDPARTY_HOME))
-endif
-
 #
 # The following variables might also be defined:
 # 
@@ -293,6 +278,9 @@ ifneq ($(ice_dir), /usr)
         export LD_LIBRARY_PATH := $(ice_lib_dir):$(LD_LIBRARY_PATH)
     endif
 
+    ifneq ($(findstring MINGW,$(UNAME)),)
+	set PATH := $(ice_lib_dir);$(PATH)
+    endif
 endif
 
 
diff --git a/cpp/INSTALL.MINGW b/cpp/INSTALL.MINGW
index e383fa72112..34628974275 100644
--- a/cpp/INSTALL.MINGW
+++ b/cpp/INSTALL.MINGW
@@ -8,10 +8,8 @@ instructions for building and testing the distribution.
 
   http://www.zeroc.com/download.html
 
-MinGW is only supported for building the Ice extension for Ruby. 
-
-MinGW is not supported for general application development in this 
-release.
+MinGW is only supported for building the Ice extension for Ruby. It is
+not supported for general application development.
 
 
 ======================================================================
@@ -22,35 +20,26 @@ Requirements
 Windows version
 ---------------
 
-Ice for MinGW is only supported in Windows XP and Windows 7.
+Ice for MinGW is only supported on Windows XP and Windows 7.
 
 
-MinGW Setup
-------------
+MinGW version 
+-------------
 
-The only supported MinGW version is the one that is included in the
-Ruby Development Kit, which you can download here:
+The only supported MinGW version is the one included in the Ruby
+Development Kit 4.5.2, which you can download here:
 
   http://rubyinstaller.org/downloads/
 
 You must download the file DevKit-tdm-32-4.5.2-20111229-1559-sfx.exe,
 which is a self-extracting archive.
 
-To build Ice with MinGW, you also need to install Cygwin. The Cygwin
-installer is available at:
-
-  http://www.cygwin.com/install.html
 
-When installing Cygwin, make sure you select "make" in the package
-list. You do not need to install the MinGW packages from Cygwin.
-
-Ruby Setup
-----------
+Ruby version
+------------
 
 You must install Ruby 1.9.3 using the Windows installer available
-at RubyInstaller:
-
-   http://rubyinstaller.org/downloads/
+at http://rubyinstaller.org/downloads
 
 The default installation directory is C:\Ruby193
 
@@ -91,16 +80,16 @@ Compilation and Testing
 Using your favorite Zip tool, unzip the Ice source archive anywhere 
 you like.
 
-Open a Cygwin command prompt and change the working directory to the
+Open a Windows command prompt and change the working directory to the
 location of the extracted source archive. For example:
 
-$ cd ~/Ice-@ver@/cpp
+> cd C:\Ice-@ver@\cpp
 
-Update your PATH to include MinGW from the Ruby Development Kit. For
-example, if you installed the kit into C:\RubyDevKit-4.5.2, you would
-update PATH as follows:
+Run the devkitvars.bat batch file from the Ruby development kit to
+setup your environment. For example, if you installed the development
+kit in C:\RubyDevKit-4.5.2, run the following:
 
-$ export PATH=/cygdrive/c/RubyDevKit-4.5.2/mingw/bin:$PATH
+> C:\RubyDevKit-4.5.2\devkitvars.bat
 
 Edit config/Make.rules to establish your build configuration. The
 comments in the file provide more information. In particular, if 
@@ -109,21 +98,23 @@ set THIRDPARTY_HOME to the Ice third-party installation directory.
 
 Now you are ready to build Ice:
 
-$ make
+> make
 
-This will build the Ice core, libraries, and tests.
+This will build the C++ and Ruby slice translators, the Ice core,
+IceSSL and C++ tests.
 
 Python is required to run the test suite:
 
   http://www.python.org/download
 
-After a successful build, you can run the test suite. Open a Windows
-(not Cygwin) command prompt and change the working directory to
-Ice-@ver@:
+After a successful build, you can run the test suite.
+
+First, add Ruby to your environment:
+
+> C:\Ruby193\bin\setrbvars.bat
+
+Next, run the test suite:
 
-> set PATH=%PATH%;C:\Ruby193\bin
-> cd C:\Ice-@ver@\cpp
-> set CPP_COMPILER=MINGW
 > python allTests.py
 
 If everything worked out, you should see lots of "ok" messages. In
@@ -134,6 +125,6 @@ case of a failure, the tests abort with "failed".
 Installation
 ======================================================================
 
-From a Cygwin command prompt, simply run "make install". This will
+From the command prompt, simply run "make install". This will
 install Ice in the directory specified by the "prefix" variable in
 config/Make.rules.
diff --git a/cpp/Makefile b/cpp/Makefile
index 67d4542b71c..df6e23ef3fe 100644
--- a/cpp/Makefile
+++ b/cpp/Makefile
@@ -13,7 +13,7 @@ include $(top_srcdir)/config/Make.rules
 
 SUBDIRS		= config src include test
 
-ifneq ($(MinGW), yes)
+ifeq ($(shell uname | grep MINGW),)
 SUBDIRS		:= $(SUBDIRS) demo
 endif
 
diff --git a/cpp/allTests.py b/cpp/allTests.py
index 2228c1915eb..faaae708b40 100755
--- a/cpp/allTests.py
+++ b/cpp/allTests.py
@@ -67,10 +67,10 @@ tests = [
     ("Ice/defaultServant", ["core"]),
     ("Ice/defaultValue", ["core"]),
     ("Ice/invoke", ["core"]),
-    ("Ice/plugin", ["core"]),
+    ("Ice/plugin", ["core", "nomingw"]),
     ("Ice/hash", ["once"]),
     ("Ice/admin", ["core"]),
-    ("Ice/metrics", ["core", "nossl", "noipv6", "nocompress"]),
+    ("Ice/metrics", ["core", "nossl", "noipv6", "nocompress", "nomingw"]),
     ("Ice/enums", ["once"]),
     ("IceSSL/configuration", ["once", "novalgrind"]), # valgrind doesn't work well with openssl
     ("IceBox/configuration", ["core", "noipv6", "novc90", "nomingw", "nomx"]),
@@ -79,7 +79,7 @@ tests = [
     ("Freeze/complex", ["once", "novc90", "nomingw"]),
     ("Freeze/evictor", ["core", "novc90", "nomingw"]),
     ("Freeze/fileLock", ["core", "novc90", "nomingw"]),
-    ("IceStorm/single", ["service", "novc90", "noappverifier", "nomingw"]),  # This test doesn't work with appverifier is sensitive to timeouts.
+    ("IceStorm/single", ["service", "novc90", "noappverifier", "nomingw"]), # This test doesn't work with appverifier is sensitive to timeouts.
     ("IceStorm/federation", ["service", "novc90", "nomingw"]),
     ("IceStorm/federation2", ["service", "novc90", "nomingw"]),
     ("IceStorm/stress", ["service", "stress", "novc90", "noappverifier", "nomingw"]), # This test is very slow with appverifier.
diff --git a/cpp/config/Make.rules b/cpp/config/Make.rules
index f558971f81a..f34015f431b 100644
--- a/cpp/config/Make.rules
+++ b/cpp/config/Make.rules
@@ -121,13 +121,13 @@ USE_READLINE		?= no
 # and IceGrid, set QT_HOME to the Qt installation directory.
 #
 #
-#QT_HOME	= /usr/local/Trolltech/Qt-4.5.3
-#QT_HOME	= /Library/Frameworks
+#QT_HOME		= /usr/local/Trolltech/Qt-4.5.3
+#QT_HOME		= /Library/Frameworks
 
 #
 # Generate position independent code unless GENPIC is set to no
 #
-#GENPIC                     ?= yes
+#GENPIC			?= yes
 
 #
 # If building with MinGW and if third party libraries are not
@@ -135,7 +135,7 @@ USE_READLINE		?= no
 # your environment variables then change the following setting to
 # reflect the installation location.
 #
-#THIRDPARTY_HOME		?= C:\Program Files\ZeroC\Ice-$(VERSION)-ThirdParty
+#THIRDPARTY_HOME	?= "C:\Program Files\ZeroC\Ice-$(VERSION)-ThirdParty"
 
 #
 # Default Mutex protocol: one of PrioNone or PrioInherit.
@@ -157,11 +157,7 @@ endif
 #
 ice_language     = cpp
 ifneq ($(shell test "$(USE_BIN_DIST)" != "yes" -a -d $(top_srcdir)/../$(ice_language) && echo 0),0)
-    ifeq ($(MinGW), yes)
-        slice_translator = slice2cpp.exe
-    else
-        slice_translator = slice2cpp
-    endif
+    slice_translator = slice2cpp
     ice_require_cpp  = 1
 endif
 
@@ -188,11 +184,7 @@ endif
 #
 # Platform specific definitions
 #
-ifeq ($(MinGW), yes)
-	include	 $(top_srcdir)/config/Make.rules.MinGW
-else
-	include	 $(top_srcdir)/config/Make.rules.$(UNAME)
-endif
+include	 $(top_srcdir)/config/Make.rules.$(UNAME)
 
 install_includedir	:= $(prefix)/include
 install_docdir		:= $(prefix)/doc
@@ -210,75 +202,73 @@ ifeq ($(DEFAULT_MUTEX_PROTOCOL), PrioInherit)
     ICEUTIL_FLAGS           = -DICE_PRIO_INHERIT
 endif
 
-ifeq ($(MinGW), yes)
-	OPENSSL_LIBS            = -leay32_mingw -lssleay32_mingw
-	BZIP2_LIBS		= -lbzip2_mingw
-	MCPP_LIBS               = -lmcpp
-	slicedir_win 		= $(shell $(top_srcdir)/../cpp/config/cygpath-win.sh $(slicedir))
-	ICECPPFLAGS		= -I"$(slicedir_win)"
+OPENSSL_FLAGS           += $(if $(OPENSSL_HOME),-I$(OPENSSL_HOME)/include)
+ifeq ($(OPENSSL_LIBS),)
+    OPENSSL_LIBS            = $(if $(OPENSSL_HOME),-L$(OPENSSL_HOME)/$(libsubdir)) -lssl -lcrypto
+endif
+OPENSSL_RPATH_LINK      = $(if $(OPENSSL_HOME),$(call rpathlink,$(OPENSSL_HOME)/$(libsubdir)))
+
+BZIP2_FLAGS             = $(if $(BZIP2_HOME),-I$(BZIP2_HOME)/include)
+ifeq ($(BZIP2_LIBS),)
+    BZIP2_LIBS              = $(if $(BZIP2_HOME),-L$(BZIP2_HOME)/$(libsubdir)) -lbz2
+endif
+BZIP2_RPATH_LINK        = $(if $(BZIP2_HOME),$(call rpathlink,$(BZIP2_HOME)/$(libsubdir)))
+
+ifeq ($(ICONV_LIBS),)
+    ICONV_LIBS              = $(if $(ICONV_HOME),-L$(ICONV_HOME)/$(libsubdir)) $(ICONV_LIB)
+endif
+
+ifneq ($(DB_HOME),)
+    DB_FLAGS             = -I$(DB_HOME)/include
+    ifeq ($(DB_LIBS),)
+	DB_LIBS              = -L$(DB_HOME)/$(libsubdir) -ldb_cxx$(CPP11LIBSUFFIX)
+    endif
+    DB_RPATH_LINK        = $(call rpathlink,$(DB_HOME)/$(libsubdir))
 else
-	OPENSSL_FLAGS           += $(if $(OPENSSL_HOME),-I$(OPENSSL_HOME)/include)
-	OPENSSL_LIBS            = $(if $(OPENSSL_HOME),-L$(OPENSSL_HOME)/$(libsubdir)) -lssl -lcrypto
-	OPENSSL_RPATH_LINK      = $(if $(OPENSSL_HOME),$(call rpathlink,$(OPENSSL_HOME)/$(libsubdir)))
-	BZIP2_FLAGS             = $(if $(BZIP2_HOME),-I$(BZIP2_HOME)/include)
-	BZIP2_LIBS              = $(if $(BZIP2_HOME),-L$(BZIP2_HOME)/$(libsubdir)) -lbz2
-	BZIP2_RPATH_LINK        = $(if $(BZIP2_HOME),$(call rpathlink,$(BZIP2_HOME)/$(libsubdir)))
-	ICONV_LIBS              = $(if $(ICONV_HOME),-L$(ICONV_HOME)/$(libsubdir)) $(ICONV_LIB)
-
-	ifneq ($(DB_HOME),)
-	   DB_FLAGS             = -I$(DB_HOME)/include
-	   DB_LIBS              = -L$(DB_HOME)/$(libsubdir) -ldb_cxx$(CPP11LIBSUFFIX)
-	   DB_RPATH_LINK        = $(call rpathlink,$(DB_HOME)/$(libsubdir))
-	else
-	   ifeq ($(shell if [ -d /usr/include/db53 -a -d /usr/$(libsubdir)/db53 ] ; then echo yes; fi), yes)
-	      DB_FLAGS          = -I/usr/include/db53
-	      DB_LIBS           = -L/usr/$(libsubdir)/db53 -ldb_cxx$(CPP11LIBSUFFIX)
-	   else
-              ifeq ($(shell if [ -d /usr/local/include/db53 -a -d /usr/local/$(libsubdir)/db53 ] ; then echo yes; fi), yes)
-                   DB_FLAGS          = -I/usr/local/include/db53
-                   DB_LIBS           = -L/usr/local/$(libsubdir)/db53 -ldb_cxx$(CPP11LIBSUFFIX)
-              else
-	           DB_LIBS      = -ldb_cxx$(CPP11LIBSUFFIX)
-              endif
-	   endif
-	endif
-	EXPAT_FLAGS             = $(if $(EXPAT_HOME),-I$(EXPAT_HOME)/include)
-	EXPAT_LIBS              = $(if $(EXPAT_HOME),-L$(EXPAT_HOME)/$(libsubdir)) -lexpat
-	EXPAT_RPATH_LINK        = $(if $(EXPAT_HOME),$(call rpathlink,$(EXPAT_HOME)/$(libsubdir)))
-	MCPP_LIBS              = $(if $(MCPP_HOME),-L$(MCPP_HOME)/$(libsubdir)) -lmcpp
-	MCPP_RPATH_LINK        = $(if $(MCPP_HOME),$(call rpathlink,$(MCPP_HOME)/$(libsubdir)))
-
-	ifeq ($(PLATFORM_HAS_READLINE),yes)
-	    ifeq ($(USE_READLINE),yes)
-		READLINE_FLAGS  = -DHAVE_READLINE $(if $(READLINE_HOME),-I$(READLINE_HOME)/include)
-		READLINE_LIBS   = $(if $(READLINE_HOME),-L$(READLINE_HOME)/$(libsubdir)) -lreadline -lncurses        
-	    endif
-	endif
-	ICECPPFLAGS		= -I$(slicedir)
+   ifeq ($(shell if [ -d /usr/include/db53 -a -d /usr/$(libsubdir)/db53 ] ; then echo yes; fi), yes)
+      DB_FLAGS          = -I/usr/include/db53
+      DB_LIBS           = -L/usr/$(libsubdir)/db53 -ldb_cxx$(CPP11LIBSUFFIX)
+   else
+      ifeq ($(shell if [ -d /usr/local/include/db53 -a -d /usr/local/$(libsubdir)/db53 ] ; then echo yes; fi), yes)
+          DB_FLAGS          = -I/usr/local/include/db53
+          DB_LIBS           = -L/usr/local/$(libsubdir)/db53 -ldb_cxx$(CPP11LIBSUFFIX)
+      else
+	  DB_LIBS      = -ldb_cxx$(CPP11LIBSUFFIX)
+      endif
+   endif
+endif
+
+EXPAT_FLAGS             = $(if $(EXPAT_HOME),-I$(EXPAT_HOME)/include)
+ifeq ($(EXPAT_LIBS),)
+    EXPAT_LIBS              = $(if $(EXPAT_HOME),-L$(EXPAT_HOME)/$(libsubdir)) -lexpat
+endif
+EXPAT_RPATH_LINK        = $(if $(EXPAT_HOME),$(call rpathlink,$(EXPAT_HOME)/$(libsubdir)))
+
+ifeq ($(MCPP_LIBS),)
+    MCPP_LIBS              = $(if $(MCPP_HOME),-L$(MCPP_HOME)/$(libsubdir)) -lmcpp
+endif
+MCPP_RPATH_LINK        = $(if $(MCPP_HOME),$(call rpathlink,$(MCPP_HOME)/$(libsubdir)))
+
+
+ifeq ($(PLATFORM_HAS_READLINE),yes)
+    ifeq ($(USE_READLINE),yes)
+	READLINE_FLAGS  = -DHAVE_READLINE $(if $(READLINE_HOME),-I$(READLINE_HOME)/include)
+	READLINE_LIBS   = $(if $(READLINE_HOME),-L$(READLINE_HOME)/$(libsubdir)) -lreadline -lncurses        
+    endif
 endif
 
+ICECPPFLAGS		= -I$(slicedir)
 
 SLICE2CPPFLAGS		= $(ICECPPFLAGS)
 
 ifeq ($(ice_dir), /usr) 
     LDFLAGS		= $(LDPLATFORMFLAGS) $(CXXFLAGS)
 else
-    ifeq ($(MinGW), yes)
-	includedir_win  = $(shell $(top_srcdir)/../cpp/config/cygpath-win.sh $(includedir))
-	CPPFLAGS	+= -I"$(includedir_win)"
-	ice_dir_win	= $(shell $(top_srcdir)/../cpp/config/cygpath-win.sh $(ice_dir))
-	ifdef ice_src_dist
-		LDFLAGS	= $(LDPLATFORMFLAGS) $(CXXFLAGS) -L$(libdir)
-	else
-		LDFLAGS	= $(LDPLATFORMFLAGS) $(CXXFLAGS) -L"$(ice_dir_win)\$(binsubdir)"
-	endif
+    CPPFLAGS	+= -I$(includedir)
+    ifdef ice_src_dist
+	LDFLAGS	= $(LDPLATFORMFLAGS) $(CXXFLAGS) -L$(libdir)
     else
-	CPPFLAGS	+= -I$(includedir)
-	ifdef ice_src_dist
-		LDFLAGS	= $(LDPLATFORMFLAGS) $(CXXFLAGS) -L$(libdir)
-	else
-		LDFLAGS	= $(LDPLATFORMFLAGS) $(CXXFLAGS) -L$(ice_dir)/$(libsubdir)
-	endif
+	LDFLAGS	= $(LDPLATFORMFLAGS) $(CXXFLAGS) -L$(ice_dir)/$(libsubdir)
     endif
 endif
 
@@ -294,35 +284,26 @@ else
     BISONFLAGS		:= -dvt
 endif
 
-ifneq ($(MinGW), yes)
 ifeq ($(mkshlib),)
     $(error You need to define mkshlib in Make.rules.$(UNAME)) 
 endif
-endif
 
 ifdef ice_src_dist
-	ifeq ($(MinGW), yes)
-		SLICEPARSERLIB	= $(bindir)/$(SLICE_LIBNAME).dll
-		SLICE2CPP	= $(bindir)/slice2cpp.exe
-	else
-		SLICEPARSERLIB	= $(libdir)/$(call mklibfilename,Slice,$(VERSION))
-		SLICE2CPP	= $(bindir)/slice2cpp
-		SLICE2FREEZE	= $(bindir)/slice2freeze
-    endif
+    SLICEPARSERLIB	= $(libdir)/$(call mklibfilename,Slice,$(VERSION))
+    SLICE2CPP		= $(bindir)/slice2cpp
+    SLICE2FREEZE	= $(bindir)/slice2freeze
 else
-	ifeq ($(MinGW), yes)
-		SLICEPARSERLIB	= $(ice_dir)/$(binsubdir)/$(SLICE_LIBNAME).dll
-		SLICE2CPP	= $(ice_dir)/$(binsubdir)/slice2cpp.exe
-    else
-		SLICEPARSERLIB	= $(ice_dir)/$(libsubdir)/$(call mklibfilename,Slice,$(VERSION))
-		SLICE2CPP	= $(ice_dir)/$(binsubdir)/slice2cpp
-		SLICE2FREEZE	= $(ice_dir)/$(binsubdir)/slice2freeze
-     endif
+    SLICEPARSERLIB	= $(ice_dir)/$(libsubdir)/$(call mklibfilename,Slice,$(VERSION))
+    SLICE2CPP		= $(ice_dir)/$(binsubdir)/slice2cpp
+    SLICE2FREEZE	= $(ice_dir)/$(binsubdir)/slice2freeze
+endif
+
+ifeq ($(SLICE_LIBS),)
+    SLICE_LIBS		= -lSlice $(BASELIBS)
 endif
 
-ifeq ($(MinGW), yes)
-	CPPFLAGS		:= $(CPPFLAGS) -I"$(THIRDPARTY_HOME_WIN)\include"
-	LDFLAGS			:= $(LDFLAGS) -L"$(THIRDPARTY_HOME_WIN)\lib\mingw" -L"$(THIRDPARTY_HOME_WIN)\bin" -L$(libdir) -L$(bindir)
+ifeq ($(ICESSL_LIBS),)
+    ICESSL_LIBS         = -lIceSSL $(LIBS)
 endif
 
 EVERYTHING		= all depend clean install 
diff --git a/cpp/config/Make.rules.MINGW b/cpp/config/Make.rules.MINGW
index 1c6212db61c..29d9c3dba4e 100644
--- a/cpp/config/Make.rules.MINGW
+++ b/cpp/config/Make.rules.MINGW
@@ -12,20 +12,13 @@
 #
 
 #
-# build with CygWin MinGW?
-#
-#ifeq ($(CygWin), yes)
-#   CXX         = i686-pc-mingw32-c++
-#endif
-
-#
 # Default compiler is c++ (aka g++).
 #
 ifeq ($(CXX),)
    CXX          = c++
 endif
 
-CXXFLAGS        = $(CXXARCHFLAGS) -fexceptions -mthreads -Wall -DWIN32_LEAN_AND_MEAN
+CXXFLAGS       	= $(CXXARCHFLAGS) -fexceptions -mthreads -Wall -DWIN32_LEAN_AND_MEAN
 LDFLAGS         = -Wl,-no-undefined 
 
 ifeq ($(CXX), i686-pc-mingw32-c++)
@@ -33,24 +26,56 @@ ifeq ($(CXX), i686-pc-mingw32-c++)
 endif
 
 ifeq ($(OPTIMIZE),yes)
-	CXXFLAGS		+= -O2 -DNDEBUG
+    CXXFLAGS		+= -O2 -DNDEBUG
 else
-	CXXFLAGS		+= -g -D_DEBUG
-	LIBSUFFIX		= d
+    CXXFLAGS		+= -g -D_DEBUG
+    LIBSUFFIX		= d
 endif
 
-COMPSUFFIX			= mingw_
+COMPSUFFIX	= mingw_
+
+mklibfilename	= $(shell echo $(1) | tr A-Z a-z)$(COMPSUFFIX)$(SOVERSION).dll
+
+ifeq ($(STATICLIBS),yes)
+    mklibtargets	= $(3)
+else
+    mklibtargets	= $(1)
+endif
 
 #
-# MinGW lib names
+# Shared library linking command. We transform -lxxx parameters into
+# -lxxxmingw_3.5.dll here to avoid having to fix all the Makefiles
+# which need to link with the MinGW libraries.
 #
-ICEUTIL_LIBNAME		= iceutil$(COMPSUFFIX)$(SOVERSION)$(LIBSUFFIX)
-SLICE_LIBNAME		= slice$(COMPSUFFIX)$(SOVERSION)$(LIBSUFFIX)
-ICE_LIBNAME			= ice$(COMPSUFFIX)$(SOVERSION)$(LIBSUFFIX)
-ICESSL_LIBNAME  	= icessl$(COMPSUFFIX)$(SOVERSION)$(LIBSUFFIX)
+mkshlib			= $(CXX) -shared $(LDFLAGS) -o $(1) $(3) \
+			  $(subst cpp/lib,cpp/bin, \
+			  $(subst -lIce,-lice$(COMPSUFFIX)$(SOVERSION), \
+			  $(subst -lIceUtil,-liceutil$(COMPSUFFIX)$(SOVERSION), \
+			  $(subst -lSlice,-lslice$(COMPSUFFIX)$(SOVERSION), \
+			  $(subst -lIceSSL,-licessl$(COMPSUFFIX)$(SOVERSION),$(4))))))
 
-BASELIBS			= -l$(ICEUTIL_LIBNAME)
-LIBS				= -l$(ICE_LIBNAME) $(BASELIBS)
-ICEUTIL_OS_LIBS		= -lrpcrt4  -ladvapi32
-ICE_OS_LIBS			= $(ICEUTIL_OS_LIBS) -lIphlpapi -lws2_32
+mklib			= ar cr $(1) $(2)
 
+libdir			= $(top_srcdir)/bin
+libsubdir	  	= bin
+
+installlib		= $(INSTALL) $(2)/$(3) $(1); \
+			  chmod a+rx $(1)/$(3) 
+
+installprogram		= $(INSTALL_PROGRAM) $(1) $(2); \
+			  chmod a+rx $(2)/$(notdir $(1).exe)
+
+CPPFLAGS		:= -I$(THIRDPARTY_HOME)/include $(CPPFLAGS) 
+LDPLATFORMFLAGS		:= -L$(THIRDPARTY_HOME)/bin $(LDFLAGS)
+
+OPENSSL_LIBS            = -leay32_mingw -lssleay32_mingw -lws2_32
+MCPP_LIBS               = -L$(THIRDPARTY_HOME)/lib/mingw -lmcpp
+BZIP2_LIBS		= -lbzip2_mingw
+
+BASELIBS		= -liceutil$(COMPSUFFIX)$(SOVERSION)
+LIBS			= -lice$(COMPSUFFIX)$(SOVERSION) $(BASELIBS) 
+ICESSL_LIBS             = -licessl$(COMPSUFFIX)$(SOVERSION) $(LIBS)
+SLICE_LIBS		= -lslice$(COMPSUFFIX)$(SOVERSION) $(BASELIBS)
+
+ICEUTIL_OS_LIBS		= -lrpcrt4  -ladvapi32
+ICE_OS_LIBS		= $(ICEUTIL_OS_LIBS) -lIphlpapi -lws2_32
diff --git a/cpp/include/Makefile b/cpp/include/Makefile
index 5de48e060d4..89e1941c5f7 100644
--- a/cpp/include/Makefile
+++ b/cpp/include/Makefile
@@ -15,8 +15,8 @@ SUBDIRS		= Ice \
 		  IceSSL \
 		  IceUtil \
 		  Slice
-		  
-ifneq ($(MinGW), yes)
+
+ifeq ($(findstring MINGW,$(UNAME)),)
 SUBDIRS		:= $(SUBDIRS) \
 		Freeze \
 		Glacier2 \
diff --git a/cpp/src/Ice/ConnectionI.cpp b/cpp/src/Ice/ConnectionI.cpp
index 947ede7fbed..b1638274089 100644
--- a/cpp/src/Ice/ConnectionI.cpp
+++ b/cpp/src/Ice/ConnectionI.cpp
@@ -1708,8 +1708,8 @@ Ice::ConnectionI::finish()
             // _sendStreams to not call finished on a message which is already done.
             //
             if(message->requestId > 0 &&
-               (message->out && _requests.find(message->requestId) == _requests.end() ||
-                message->outAsync && _asyncRequests.find(message->requestId) == _asyncRequests.end()))
+               ((message->out && _requests.find(message->requestId) == _requests.end()) ||
+                (message->outAsync && _asyncRequests.find(message->requestId) == _asyncRequests.end())))
             {
                 if(message->sent(this, true))
                 {
diff --git a/cpp/src/Ice/DynamicLibrary.cpp b/cpp/src/Ice/DynamicLibrary.cpp
index ab724a9847a..4fa7f1499e2 100644
--- a/cpp/src/Ice/DynamicLibrary.cpp
+++ b/cpp/src/Ice/DynamicLibrary.cpp
@@ -142,7 +142,7 @@ IceInternal::DynamicLibrary::loadEntryPoint(const string& entryPoint, bool useIc
 
     lib += version;
 
-#   ifdef _DEBUG
+#   if defined(_DEBUG) && !defined(__MINGW32__)
     lib += 'd';
 #   endif
 
diff --git a/cpp/src/Ice/Makefile b/cpp/src/Ice/Makefile
index 70edf85aa0b..60aa1f604c9 100644
--- a/cpp/src/Ice/Makefile
+++ b/cpp/src/Ice/Makefile
@@ -9,17 +9,10 @@
 
 top_srcdir	= ../..
 
-include $(top_srcdir)/config/Make.rules.common
-
-ifeq ($(MinGW), yes)
-	DLLNAME		= $(top_srcdir)/bin/ice$(COMPSUFFIX)$(SOVERSION)$(LIBSUFFIX).dll
-	TARGETS		= $(DLLNAME) $(LIBNAME)
-else
-	LIBFILENAME	= $(call mklibfilename,Ice,$(VERSION))
-	SONAME		= $(call mksoname,Ice,$(SOVERSION))  
-	LIBNAME		= $(call mklibname,Ice)
-	TARGETS		= $(call mklibtargets,$(libdir)/$(LIBFILENAME),$(libdir)/$(SONAME),$(libdir)/$(LIBNAME))
-endif
+LIBFILENAME	= $(call mklibfilename,Ice,$(VERSION))
+SONAME		= $(call mksoname,Ice,$(SOVERSION))  
+LIBNAME		= $(call mklibname,Ice)
+TARGETS		= $(call mklibtargets,$(libdir)/$(LIBFILENAME),$(libdir)/$(SONAME),$(libdir)/$(LIBNAME))
 
 OBJS		= Acceptor.o \
 		  Application.o \
@@ -123,12 +116,11 @@ OBJS		= Acceptor.o \
 		  UdpTransceiver.o \
 		  Version.o
 
-ifneq ($(MinGW), yes)
+ifeq ($(findstring MINGW,$(shell uname)),)
 OBJS		:= $(OBJS) \
 		  SysLoggerI.o
 endif
 
-
 SRCS		= $(OBJS:.o=.cpp) \
 		  DLLMain.cpp
 
@@ -178,18 +170,18 @@ SDIR		= $(slicedir)/Ice
 include $(top_srcdir)/config/Make.rules
 
 CPPFLAGS	:= -I.. $(CPPFLAGS) -DICE_API_EXPORTS $(BZIP2_FLAGS)
+ifneq ($(COMPSUFFIX),)
+CPPFLAGS	:= $(CPPFLAGS) -DCOMPSUFFIX=\"$(COMPSUFFIX)\"
+endif
 SLICE2CPPFLAGS	:= --ice --include-dir Ice --dll-export ICE_API $(SLICE2CPPFLAGS)
 
-ifeq ($(MinGW), yes)
-CPPFLAGS	:= $(CPPFLAGS) -DCOMPSUFFIX=\"$(COMPSUFFIX)\"
-LINKWITH        := $(ICE_OS_LIBS) -l$(ICEUTIL_LIBNAME) $(BZIP2_LIBS) 
-$(DLLNAME): $(OBJS)
-	$(CXX) -shared $(LDFLAGS) -o $(DLLNAME) $(OBJS) $(LINKWITH)
+LINKWITH        := -lIceUtil $(BZIP2_LIBS) $(ICONV_LIBS) $(ICE_OS_LIBS)
 
-install:: all
-	$(call installprogram,$(DLLNAME),$(install_bindir))
+ifeq ($(STATICLIBS),yes)
+$(libdir)/$(LIBNAME): $(OBJS)
+	rm -f $@
+	$(call mklib,$@,$(OBJS))
 else
-LINKWITH        := -lIceUtil $(BZIP2_LIBS) $(ICONV_LIBS) $(ICE_OS_LIBS)
 $(libdir)/$(LIBFILENAME): $(OBJS)
 	rm -f $@
 	$(call mkshlib,$@,$(SONAME),$(OBJS),$(LINKWITH))
@@ -201,9 +193,9 @@ $(libdir)/$(SONAME): $(libdir)/$(LIBFILENAME)
 $(libdir)/$(LIBNAME): $(libdir)/$(SONAME)
 	rm -f $@
 	ln -s $(SONAME) $@
+endif
 
 install:: all
 	$(call installlib,$(install_libdir),$(libdir),$(LIBFILENAME),$(SONAME),$(LIBNAME))
-endif
 
 include .depend
diff --git a/cpp/src/IceSSL/Makefile b/cpp/src/IceSSL/Makefile
index ab2d6ca690b..0ceb0bfe450 100644
--- a/cpp/src/IceSSL/Makefile
+++ b/cpp/src/IceSSL/Makefile
@@ -12,15 +12,10 @@ top_srcdir	= ../..
 
 include $(top_srcdir)/config/Make.rules.common
 
-ifeq ($(MinGW), yes)
-	DLLNAME         = $(top_srcdir)/bin/icessl$(COMPSUFFIX)$(SOVERSION)$(LIBSUFFIX).dll
-	TARGETS		= $(DLLNAME) $(LIBNAME)
-else
-	LIBFILENAME     = $(call mklibfilename,IceSSL,$(VERSION))
-	SONAME          = $(call mksoname,IceSSL,$(SOVERSION))  
-	LIBNAME		= $(call mklibname,IceSSL)
-	TARGETS		= $(call mklibtargets,$(libdir)/$(LIBFILENAME),$(libdir)/$(SONAME),$(libdir)/$(LIBNAME))
-endif
+LIBFILENAME     = $(call mklibfilename,IceSSL,$(VERSION))
+SONAME          = $(call mksoname,IceSSL,$(SOVERSION))  
+LIBNAME		= $(call mklibname,IceSSL)
+TARGETS		= $(call mklibtargets,$(libdir)/$(LIBFILENAME),$(libdir)/$(SONAME),$(libdir)/$(LIBNAME))
 
 OBJS		= AcceptorI.o \
 		  Certificate.o \
@@ -48,19 +43,13 @@ include $(top_srcdir)/config/Make.rules
 CPPFLAGS	:= -I.. $(CPPFLAGS) -DICE_SSL_API_EXPORTS $(OPENSSL_FLAGS)
 SLICE2CPPFLAGS	:= --ice --include-dir IceSSL --dll-export ICE_SSL_API $(SLICE2CPPFLAGS)
 
-ifeq ($(MinGW), yes)
-
-LINKWITH        := -lice$(COMPSUFFIX)$(SOVERSION)$(LIBSUFFIX) -liceutil$(COMPSUFFIX)$(SOVERSION)$(LIBSUFFIX) $(ICE_OS_LIBS) $(OPENSSL_LIBS)
-	
-$(DLLNAME): $(OBJS)
-	$(CXX) -shared $(LDFLAGS) -o $(DLLNAME) $(OBJS) $(LINKWITH)
-
-install:: all
-	$(call installprogram,$(DLLNAME),$(install_bindir))
-
-else
 LINKWITH        := $(BZIP2_RPATH_LINK) -lIce -lIceUtil $(OPENSSL_LIBS) $(CXXLIBS)
 
+ifeq ($(STATICLIBS),yes)
+$(libdir)/$(LIBNAME): $(OBJS)
+	rm -f $@
+	$(call mklib,$@,$(OBJS))
+else
 $(libdir)/$(LIBFILENAME): $(OBJS)
 	rm -f $@
 	$(call mkshlib,$@,$(SONAME),$(OBJS),$(LINKWITH))
@@ -72,9 +61,9 @@ $(libdir)/$(SONAME): $(libdir)/$(LIBFILENAME)
 $(libdir)/$(LIBNAME): $(libdir)/$(SONAME)
 	rm -f $@
 	ln -s $(SONAME) $@
+endif
 
 install:: all
 	$(call installlib,$(install_libdir),$(libdir),$(LIBFILENAME),$(SONAME),$(LIBNAME))
-endif
 
 include .depend
diff --git a/cpp/src/IceUtil/Makefile b/cpp/src/IceUtil/Makefile
index a3e19c0914f..ac76f2362c1 100644
--- a/cpp/src/IceUtil/Makefile
+++ b/cpp/src/IceUtil/Makefile
@@ -9,17 +9,10 @@
 
 top_srcdir	= ../..
 
-include $(top_srcdir)/config/Make.rules.common
-
-ifeq ($(MinGW), yes)
-	DLLNAME		= $(top_srcdir)/bin/iceutil$(COMPSUFFIX)$(SOVERSION)$(LIBSUFFIX).dll
-	TARGETS		= $(DLLNAME) $(LIBNAME)
-else
-	LIBFILENAME	= $(call mklibfilename,IceUtil,$(VERSION))
-	SONAME		= $(call mksoname,IceUtil,$(SOVERSION))  
-	LIBNAME		= $(call mklibname,IceUtil)
-	TARGETS		= $(call mklibtargets,$(libdir)/$(LIBFILENAME),$(libdir)/$(SONAME),$(libdir)/$(LIBNAME))
-endif
+LIBFILENAME	= $(call mklibfilename,IceUtil,$(VERSION))
+SONAME		= $(call mksoname,IceUtil,$(SOVERSION))  
+LIBNAME		= $(call mklibname,IceUtil)
+TARGETS		= $(call mklibtargets,$(libdir)/$(LIBFILENAME),$(libdir)/$(SONAME),$(libdir)/$(LIBNAME))
 
 OBJS		= ArgVector.o \
 		  Cond.o \
@@ -48,16 +41,8 @@ SRCS		= $(OBJS:.o=.cpp)
 include $(top_srcdir)/config/Make.rules
 
 CPPFLAGS        := $(CPPFLAGS) $(ICEUTIL_FLAGS) -DICE_UTIL_API_EXPORTS -I..
-
 LINKWITH        := $(ICEUTIL_OS_LIBS)
 
-ifeq ($(MinGW), yes)
-$(DLLNAME): $(OBJS)
-	$(CXX) -shared $(LDFLAGS) -o $(DLLNAME) $(OBJS) $(LINKWITH)
-	
-install:: all
-	$(call installprogram,$(DLLNAME),$(install_bindir))
-else
 ifeq ($(STATICLIBS),yes)
 $(libdir)/$(LIBNAME): $(OBJS)
 	rm -f $@
@@ -75,9 +60,9 @@ $(libdir)/$(LIBNAME): $(libdir)/$(SONAME)
 	rm -f $@
 	ln -s $(SONAME) $@
 endif
+
 install:: all
 	$(call installlib,$(install_libdir),$(libdir),$(LIBFILENAME),$(SONAME),$(LIBNAME))
-endif
 
 include .depend
 
diff --git a/cpp/src/Makefile b/cpp/src/Makefile
index 3c8cca006d0..610d72eeda3 100644
--- a/cpp/src/Makefile
+++ b/cpp/src/Makefile
@@ -11,16 +11,15 @@ top_srcdir	= ..
 
 include $(top_srcdir)/config/Make.rules
 
-
-ifeq ($(MinGW), yes)
-	SUBDIRS		= IceUtil \
+ifneq ($(findstring MINGW,$(UNAME)),)
+    SUBDIRS		= IceUtil \
 			  Slice \
 			  slice2cpp \
 			  slice2rb \
 			  Ice \
 			  IceSSL
 else
-	SUBDIRS		= IceUtil \
+    SUBDIRS		= IceUtil \
 			  Slice \
 			  slice2cpp \
 			  slice2cs \
diff --git a/cpp/src/Slice/Makefile b/cpp/src/Slice/Makefile
index f07c97d1340..62121860458 100644
--- a/cpp/src/Slice/Makefile
+++ b/cpp/src/Slice/Makefile
@@ -11,15 +11,10 @@ top_srcdir	= ../..
 
 include $(top_srcdir)/config/Make.rules.common
 
-ifeq ($(MinGW), yes)
-	DLLNAME		= $(top_srcdir)/bin/slice$(COMPSUFFIX)$(SOVERSION)$(LIBSUFFIX).dll
-	TARGETS		= $(DLLNAME) $(LIBNAME)
-else
-	LIBFILENAME	= $(call mklibfilename,Slice,$(VERSION))
-	SONAME		= $(call mksoname,Slice,$(SOVERSION))  
-	LIBNAME		= $(call mklibname,Slice)
-	TARGETS		= $(call mklibtargets,$(libdir)/$(LIBFILENAME),$(libdir)/$(SONAME),$(libdir)/$(LIBNAME))
-endif
+LIBFILENAME	= $(call mklibfilename,Slice,$(VERSION))
+SONAME		= $(call mksoname,Slice,$(SOVERSION))  
+LIBNAME		= $(call mklibname,Slice)
+TARGETS		= $(call mklibtargets,$(libdir)/$(LIBFILENAME),$(libdir)/$(SONAME),$(libdir)/$(LIBNAME))
 
 OBJS		= Scanner.o \
 		  ../Slice/Grammar.o \
@@ -46,15 +41,7 @@ include $(top_srcdir)/config/Make.rules
 CPPFLAGS	:= -I.. $(CPPFLAGS) -DSLICE_API_EXPORTS 
 BISONFLAGS	:= --name-prefix "slice_" $(BISONFLAGS)
 
-ifeq ($(MinGW), yes)
-LINKWITH	:= -l$(ICEUTIL_LIBNAME) $(MCPP_LIBS)
-$(DLLNAME): $(OBJS)
-	$(CXX) -shared $(LDFLAGS) -o $(DLLNAME) $(OBJS) $(LINKWITH)
-	
-install:: all
-	$(call installprogram,$(DLLNAME),$(install_bindir))
-else
-LINKWITH	:= -lIceUtil $(MCPP_LIBS)
+LINKWITH	:= $(BASELIBS) $(MCPP_LIBS)
 ifeq ($(STATICLIBS),yes)
 $(libdir)/$(LIBNAME): $(OBJS)
 	rm -f $@
@@ -71,7 +58,7 @@ $(libdir)/$(SONAME): $(libdir)/$(LIBFILENAME)
 $(libdir)/$(LIBNAME): $(libdir)/$(SONAME)
 	rm -f $@
 	ln -s $(SONAME) $@
-endif
+
 install:: all
 	$(call installlib,$(install_libdir),$(libdir),$(LIBFILENAME),$(SONAME),$(LIBNAME))
 endif
diff --git a/cpp/src/slice2confluence/Makefile b/cpp/src/slice2confluence/Makefile
index ac690206e08..bf617791faa 100644
--- a/cpp/src/slice2confluence/Makefile
+++ b/cpp/src/slice2confluence/Makefile
@@ -25,7 +25,7 @@ CPPFLAGS	:= -I. $(CPPFLAGS)
 
 $(NAME): $(OBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(OBJS) -lSlice $(BASELIBS) $(MCPP_RPATH_LINK)
+	$(CXX) $(LDFLAGS) -o $@ $(OBJS) $(SLICE_LIBS) $(MCPP_RPATH_LINK)
 
 install:: all
 	$(call installprogram,$(NAME),$(install_bindir))
diff --git a/cpp/src/slice2cpp/Makefile b/cpp/src/slice2cpp/Makefile
index 167f35e7dc8..573f53d96d0 100644
--- a/cpp/src/slice2cpp/Makefile
+++ b/cpp/src/slice2cpp/Makefile
@@ -9,13 +9,7 @@
 
 top_srcdir	= ../..
 
-include $(top_srcdir)/config/Make.rules.common
-
-ifeq ($(MinGW), yes)
-	NAME		= $(top_srcdir)/bin/slice2cpp.exe
-else
-	NAME		= $(top_srcdir)/bin/slice2cpp
-endif
+NAME		= $(top_srcdir)/bin/slice2cpp
 
 TARGETS		= $(NAME)
 
@@ -28,15 +22,10 @@ include $(top_srcdir)/config/Make.rules
 
 CPPFLAGS	:= -I. $(CPPFLAGS)
 
-ifeq ($(MinGW), yes)
-$(NAME): $(OBJS)
-	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(OBJS) -lslice$(COMPSUFFIX)$(SOVERSION)$(LIBSUFFIX) $(BASELIBS) $(MCPP_RPATH_LINK)
-else
 $(NAME): $(OBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(OBJS) -lSlice $(BASELIBS) $(MCPP_RPATH_LINK)
-endif
+	$(CXX) $(LDFLAGS) -o $@ $(OBJS) $(SLICE_LIBS) $(MCPP_RPATH_LINK)
+
 install:: all
 	$(call installprogram,$(NAME),$(install_bindir))
 
diff --git a/cpp/src/slice2cs/Makefile b/cpp/src/slice2cs/Makefile
index 8a9cfd14b3f..594b421e61c 100644
--- a/cpp/src/slice2cs/Makefile
+++ b/cpp/src/slice2cs/Makefile
@@ -24,7 +24,7 @@ CPPFLAGS	:= -I. $(CPPFLAGS)
 
 $(NAME): $(OBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(OBJS) -lSlice $(BASELIBS) $(MCPP_RPATH_LINK)
+	$(CXX) $(LDFLAGS) -o $@ $(OBJS) $(SLICE_LIBS) $(MCPP_RPATH_LINK)
 
 install:: all
 	$(call installprogram,$(NAME),$(install_bindir))
diff --git a/cpp/src/slice2freeze/Makefile b/cpp/src/slice2freeze/Makefile
index c692a294270..38750f627e0 100644
--- a/cpp/src/slice2freeze/Makefile
+++ b/cpp/src/slice2freeze/Makefile
@@ -23,7 +23,7 @@ CPPFLAGS	:= -I. $(CPPFLAGS)
 
 $(NAME): $(OBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(OBJS) -lSlice $(BASELIBS) $(MCPP_RPATH_LINK)
+	$(CXX) $(LDFLAGS) -o $@ $(OBJS) $(SLICE_LIBS) $(MCPP_RPATH_LINK)
 
 install:: all
 	$(call installprogram,$(NAME),$(install_bindir))
diff --git a/cpp/src/slice2freezej/Makefile b/cpp/src/slice2freezej/Makefile
index afe12524b0e..a65bda333a8 100644
--- a/cpp/src/slice2freezej/Makefile
+++ b/cpp/src/slice2freezej/Makefile
@@ -23,7 +23,7 @@ CPPFLAGS	:= -I. $(CPPFLAGS)
 
 $(NAME): $(OBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(OBJS) -lSlice $(BASELIBS) $(MCPP_RPATH_LINK)
+	$(CXX) $(LDFLAGS) -o $@ $(OBJS) $(SLICE_LIBS) $(MCPP_RPATH_LINK)
 
 install:: all
 	$(call installprogram,$(NAME),$(install_bindir))
diff --git a/cpp/src/slice2html/Makefile b/cpp/src/slice2html/Makefile
index 40f75120396..2caeaa9a23e 100644
--- a/cpp/src/slice2html/Makefile
+++ b/cpp/src/slice2html/Makefile
@@ -24,7 +24,7 @@ CPPFLAGS	:= -I. $(CPPFLAGS)
 
 $(NAME): $(OBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(OBJS) -lSlice $(BASELIBS) $(MCPP_RPATH_LINK)
+	$(CXX) $(LDFLAGS) -o $@ $(OBJS) $(SLICE_LIBS) $(MCPP_RPATH_LINK)
 
 install:: all
 	$(call installprogram,$(NAME),$(install_bindir))
diff --git a/cpp/src/slice2java/Makefile b/cpp/src/slice2java/Makefile
index b834a9d94df..c39eb6c9375 100644
--- a/cpp/src/slice2java/Makefile
+++ b/cpp/src/slice2java/Makefile
@@ -24,7 +24,7 @@ CPPFLAGS	:= -I. $(CPPFLAGS)
 
 $(NAME): $(OBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(OBJS) -lSlice $(BASELIBS) $(MCPP_RPATH_LINK)
+	$(CXX) $(LDFLAGS) -o $@ $(OBJS) $(SLICE_LIBS) $(MCPP_RPATH_LINK)
 
 install:: all
 	$(call installprogram,$(NAME),$(install_bindir))
diff --git a/cpp/src/slice2php/Makefile b/cpp/src/slice2php/Makefile
index 34418b68ee5..0610db0ffc6 100644
--- a/cpp/src/slice2php/Makefile
+++ b/cpp/src/slice2php/Makefile
@@ -23,7 +23,7 @@ CPPFLAGS	:= -I. $(CPPFLAGS)
 
 $(NAME): $(OBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(OBJS) -lSlice $(BASELIBS) $(MCPP_RPATH_LINK)
+	$(CXX) $(LDFLAGS) -o $@ $(OBJS) $(SLICE_LIBS) $(MCPP_RPATH_LINK)
 
 install:: all
 	$(call installprogram,$(NAME),$(install_bindir))
diff --git a/cpp/src/slice2py/Makefile b/cpp/src/slice2py/Makefile
index 12472ff7104..1a549ecbdd1 100644
--- a/cpp/src/slice2py/Makefile
+++ b/cpp/src/slice2py/Makefile
@@ -23,7 +23,7 @@ CPPFLAGS	:= -I. $(CPPFLAGS)
 
 $(NAME): $(OBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(OBJS) -lSlice $(BASELIBS) $(MCPP_RPATH_LINK)
+	$(CXX) $(LDFLAGS) -o $@ $(OBJS) $(SLICE_LIBS) $(MCPP_RPATH_LINK)
 
 install:: all
 	$(call installprogram,$(NAME),$(install_bindir))
diff --git a/cpp/src/slice2rb/Makefile b/cpp/src/slice2rb/Makefile
index 1e4df68e074..f3cd62653a3 100644
--- a/cpp/src/slice2rb/Makefile
+++ b/cpp/src/slice2rb/Makefile
@@ -9,13 +9,7 @@
 
 top_srcdir	= ../..
 
-include $(top_srcdir)/config/Make.rules.common
-
-ifeq ($(MinGW), yes)
-	NAME		= $(top_srcdir)/bin/slice2rb.exe
-else
-	NAME		= $(top_srcdir)/bin/slice2rb
-endif
+NAME		= $(top_srcdir)/bin/slice2rb
 
 TARGETS		= $(NAME)
 
@@ -27,15 +21,9 @@ include $(top_srcdir)/config/Make.rules
 
 CPPFLAGS	:= -I. $(CPPFLAGS)
 
-ifeq ($(MinGW), yes)
-$(NAME): $(OBJS)
-	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(OBJS) -lslice$(COMPSUFFIX)$(SOVERSION)$(LIBSUFFIX) $(BASELIBS) $(MCPP_RPATH_LINK)
-else
 $(NAME): $(OBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(OBJS) -lSlice $(BASELIBS) $(MCPP_RPATH_LINK)
-endif
+	$(CXX) $(LDFLAGS) -o $@ $(OBJS) $(SLICE_LIBS) $(MCPP_RPATH_LINK)
 
 install:: all
 	$(call installprogram,$(NAME),$(install_bindir))
diff --git a/cpp/test/Glacier2/ssl/Makefile b/cpp/test/Glacier2/ssl/Makefile
index 5e2de9ca1b9..8960d1c114b 100644
--- a/cpp/test/Glacier2/ssl/Makefile
+++ b/cpp/test/Glacier2/ssl/Makefile
@@ -31,6 +31,6 @@ $(CLIENT): $(OBJS) $(COBJS)
 
 $(SERVER): $(OBJS) $(SOBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(OBJS) $(SOBJS) $(LIBS) -lGlacier2 $(OPENSSL_RPATH_LINK) -lIceSSL
+	$(CXX) $(LDFLAGS) -o $@ $(OBJS) $(SOBJS) $(ICESSL_LIBS) -lGlacier2 $(OPENSSL_RPATH_LINK)
 
 include .depend
diff --git a/cpp/test/Ice/info/Makefile b/cpp/test/Ice/info/Makefile
index e6d9f6435a9..b0c6690517c 100644
--- a/cpp/test/Ice/info/Makefile
+++ b/cpp/test/Ice/info/Makefile
@@ -31,18 +31,14 @@ SLICE_SRCS	= Test.ice
 
 include $(top_srcdir)/config/Make.rules
 
-ifneq ($(MinGW), yes)
-	ICESSL_LIBNAME	= IceSSL
-endif
-
 CPPFLAGS	:= -I. -I../../include $(CPPFLAGS)
 
 $(CLIENT): $(COBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(COBJS) $(OPENSSL_RPATH_LINK) $(LIBS) -l$(ICESSL_LIBNAME)
+	$(CXX) $(LDFLAGS) -o $@ $(COBJS) $(OPENSSL_RPATH_LINK) $(ICESSL_LIBS)
 
 $(SERVER): $(SOBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(SOBJS) $(LIBS) -l$(ICESSL_LIBNAME)
+	$(CXX) $(LDFLAGS) -o $@ $(SOBJS) $(ICESSL_LIBS)
 
 include .depend
diff --git a/cpp/test/Ice/plugin/Makefile b/cpp/test/Ice/plugin/Makefile
index ab9ffbdee24..74086c42da4 100644
--- a/cpp/test/Ice/plugin/Makefile
+++ b/cpp/test/Ice/plugin/Makefile
@@ -10,10 +10,10 @@
 top_srcdir	= ../../..
 
 PLUGINLIBFILENAME	= $(call mklibfilename,TestPlugin,$(VERSION))
-PLUGINSONAME	= $(call mksoname,TestPlugin,$(SOVERSION))  
-PLUGINLIBNAME	= $(call mklibname,TestPlugin)
-CLIENT		= client
-PLUGINDIR	= plugins
+PLUGINSONAME		= $(call mksoname,TestPlugin,$(SOVERSION))  
+PLUGINLIBNAME		= $(call mklibname,TestPlugin)
+CLIENT			= client
+PLUGINDIR		= plugins
 
 TARGETS		= $(CLIENT) $(call mklibtargets,$(PLUGINDIR)/$(PLUGINLIBFILENAME),$(PLUGINDIR)/$(PLUGINSONAME),$(PLUGINDIR)/$(PLUGINLIBNAME))
 
diff --git a/cpp/test/IceGrid/session/Makefile b/cpp/test/IceGrid/session/Makefile
index 781dab9b783..81cca997401 100644
--- a/cpp/test/IceGrid/session/Makefile
+++ b/cpp/test/IceGrid/session/Makefile
@@ -43,7 +43,7 @@ $(VERIFIER): $(VOBJS)
 
 $(SERVER): $(SOBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(SOBJS) -lGlacier2 -lIceSSL $(LIBS) $(OPENSSL_RPATH_LINK)
+	$(CXX) $(LDFLAGS) -o $@ $(SOBJS) -lGlacier2 $(ICESSL_LIBS) $(OPENSSL_RPATH_LINK)
 
 clean::
 	-rm -rf db/node db/registry db/node-1 db/replica-*
diff --git a/cpp/test/IceSSL/configuration/Makefile b/cpp/test/IceSSL/configuration/Makefile
index 776f8219eea..177b4887fb3 100644
--- a/cpp/test/IceSSL/configuration/Makefile
+++ b/cpp/test/IceSSL/configuration/Makefile
@@ -31,18 +31,14 @@ GENPIC          = no
 
 include $(top_srcdir)/config/Make.rules
 
-ifneq ($(MinGW), yes)
-ICESSL_LIBNAME = IceSSL
-endif
-
 CPPFLAGS	:= -I. -I../../include $(CPPFLAGS) 
 
 $(CLIENT): $(COBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(COBJS) $(LIBS) $(OPENSSL_RPATH_LINK) -l$(ICESSL_LIBNAME)
+	$(CXX) $(LDFLAGS) -o $@ $(COBJS) $(OPENSSL_RPATH_LINK) $(ICESSL_LIBS)
 
 $(SERVER): $(SOBJS)
 	rm -f $@
-	$(CXX) $(LDFLAGS) -o $@ $(SOBJS) $(LIBS) $(OPENSSL_RPATH_LINK) -l$(ICESSL_LIBNAME)
+	$(CXX) $(LDFLAGS) -o $@ $(SOBJS) $(OPENSSL_RPATH_LINK) $(ICESSL_LIBS)
 
 include .depend
diff --git a/cpp/test/Makefile b/cpp/test/Makefile
index 403c998684b..571e860e31d 100644
--- a/cpp/test/Makefile
+++ b/cpp/test/Makefile
@@ -15,15 +15,15 @@ SUBDIRS		= IceUtil \
 		  Slice \
 		  Ice \
                   IceSSL
-		  
-ifneq ($(MinGW), yes)
+
+ifeq ($(findstring MINGW,$(UNAME)),)
 SUBDIRS		:= $(SUBDIRS) \
-			  IceBox \
-			  IceStorm \
-			  Freeze \
-			  FreezeScript \
-			  Glacier2 \
-			  IceGrid
+		   IceBox \
+		   IceStorm \
+		   Freeze \
+		   FreezeScript \
+		   Glacier2 \
+		   IceGrid
 endif
 
 
diff --git a/rb/INSTALL.WINDOWS b/rb/INSTALL.WINDOWS
index bf75a3dbbba..140c4e9041d 100644
--- a/rb/INSTALL.WINDOWS
+++ b/rb/INSTALL.WINDOWS
@@ -14,10 +14,9 @@ Build Environment
 
 To build Ice for Ruby you must have the following:
 
- - Ice @ver@ for C++
- - Ruby 1.9.3
- - MinGW from Ruby Development Kit
- - Cygwin with make package
+- Ice @ver@ for C++
+- Ruby 1.9.3
+- Ruby Development Kit 4.5.2
 
 The Ruby distribution for Windows uses the MinGW compiler, therefore
 MinGW is the only compiler supported by Ice for Ruby.
@@ -46,12 +45,6 @@ your build environment:
 
    http://rubyinstaller.org/downloads/
    
-4. You have installed Cygwin and included the "make" package in your
-   installation. See the link below for more information on installing
-   Cygwin:
-
-   http://cygwin.com/install.html
-
 
 If you selected different installation directories, you will need to
 modify the relevant path names in the steps below to match your
@@ -68,29 +61,30 @@ Compiling Ice for Ruby
 
 Follow these steps to build the Ice extension for Ruby:
 
-1) Open a Cygwin command prompt
+1) Open a Windows command prompt
 
-2) Add Ruby to your PATH:
+2) Add Ruby to your environment:
 
-  $ export PATH=/cygdrive/c/Ruby193/bin:$PATH
+  > C:\Ruby193\bin\setrbvars.bat
 
 3) Add MinGW from the Ruby Development Kit to your PATH:
 
-  $ export PATH=/cygdrive/c/RubyDevKit-4.5.2/mingw/bin:$PATH
+  > C:\RubyDevKit-4.5.2\devkitvars.bat
 
 4) Change to the Ice for Ruby source directory:
 
-   $ cd Ice-@ver@/rb
+   > cd Ice-@ver@/rb
 
-5) If you installed the Ice @ver@ distribution in a non-standard
-   location, set the ICE_HOME environment variable with the Ice
+5) If you have not built Ice for C++ from the cpp subdirectory or if
+   you have installed the Ice @ver@ for C++ development kit in a
+   non-standard location, set the ICE_HOME environment variable to the
    installation directory. For example:
 
-   $ export ICE_HOME=C:\Ice-@ver@
+   > set ICE_HOME=C:\Ice-@ver@
 
 6) Run make:
 
-   $ make
+   > make
 
 If no errors occurred, you can now begin using Ice for Ruby.
 
@@ -106,7 +100,7 @@ test suite. Python is required to run the test suite:
 The test suites require that the Ice for C++ tests be built in the cpp
 subdirectory of this source distribution.
 
-Open a Windows (not Cygwin) command window and change to the top-level
+Open a Windows command prompt and change to the top-level
 directory. At the command prompt, execute:
 
   > python allTests.py
diff --git a/rb/config/Make.rules b/rb/config/Make.rules
index 8085cc1fbf5..1691249b29e 100644
--- a/rb/config/Make.rules
+++ b/rb/config/Make.rules
@@ -117,11 +117,7 @@ ice_require_cpp  = yes
 
 include $(top_srcdir)/../cpp/config/Make.rules.common
 
-ifeq ($(MinGW), yes)
-	slice_translator = slice2rb.exe
-else
-	slice_translator = slice2rb
-endif
+slice_translator = slice2rb
 
 ifeq ($(shell test -f $(top_srcdir)/config/Make.common.rules && echo 0),0)
     include $(top_srcdir)/config/Make.common.rules
@@ -129,7 +125,7 @@ else
     include $(top_srcdir)/../config/Make.common.rules
 endif
 
-libdir				= $(top_srcdir)/ruby
+libdir			= $(top_srcdir)/ruby
 install_rubydir		= $(prefix)/ruby
 install_libdir		= $(prefix)/ruby
 install_bindir		= $(prefix)/$(binsubdir)
@@ -137,53 +133,29 @@ install_bindir		= $(prefix)/$(binsubdir)
 #
 # Platform specific definitions
 #
-ifeq ($(MinGW), yes)
-	include 	$(top_srcdir)/../cpp/config/Make.rules.MINGW
+ifeq ($(shell test -f $(top_srcdir)/config/Make.rules.$(UNAME) && echo 0),0)
+    configdir = $(top_srcdir)/config
 else
-	ifeq ($(shell test -f $(top_srcdir)/config/Make.rules.$(UNAME) && echo 0),0)
-		configdir = $(top_srcdir)/config
-	else
-		configdir = $(top_srcdir)/../cpp/config
-	endif 
-	include	 $(configdir)/Make.rules.$(UNAME)
-endif
-
-ifeq ($(MinGW), yes)
-	ice_cpp_dir_win := $(shell $(top_srcdir)/../cpp/config/cygpath-win.sh $(ice_cpp_dir))
-	ifdef ice_src_dist
-		ifeq ($(ice_cpp_dir), $(ice_dir)/cpp)
-			ICE_BIN_DIR	= -L"$(ice_cpp_dir_win)/bin"
-	    else
-			ICE_BIN_DIR	= -L"$(ice_cpp_dir_win)/$(binsubdir)"
-	    endif
-		ICE_FLAGS 	= -I"$(ice_cpp_dir_win)\include"
-	endif
+    configdir = $(top_srcdir)/../cpp/config
+endif 
+include	 $(configdir)/Make.rules.$(UNAME)
 
-	ifdef ice_bin_dist
-		ice_dir_win	:= $(shell $(top_srcdir)/../cpp/config/cygpath-win.sh $(ice_dir))
-		ICE_BIN_DIR	= -L"$(ice_dir_win)/$(binsubdir)"
-		ICE_FLAGS	= -I"$(ice_dir_win)/include"
-	endif
-	ICE_LIBS = $(ICE_BIN_DIR) -l$(ICE_LIBNAME) -l$(SLICE_LIBNAME) -l$(ICEUTIL_LIBNAME)
-else
-	ifdef ice_src_dist
-		ifeq ($(ice_cpp_dir), $(ice_dir)/cpp)
-			ICE_LIB_DIR = -L$(ice_cpp_dir)/lib
-	    else
-			ICE_LIB_DIR 	= -L$(ice_cpp_dir)/$(libsubdir)
-	    endif
-	    ICE_FLAGS 	= -I$(ice_cpp_dir)/include
-	endif
-	ifdef ice_bin_dist
-		ICE_LIB_DIR 	= -L$(ice_dir)/$(libsubdir)
-		ICE_FLAGS	= -I$(ice_dir)/include
-	endif
-	ICE_LIBS = $(ICE_LIB_DIR) -lIce -lSlice -lIceUtil
+ifdef ice_src_dist
+    ifeq ($(ice_cpp_dir), $(ice_dir)/cpp)
+	ICE_LIB_DIR = -L$(ice_cpp_dir)/lib
+    else
+	ICE_LIB_DIR = -L$(ice_cpp_dir)/$(libsubdir)
+    endif
+    ICE_FLAGS 	= -I$(ice_cpp_dir)/include
 endif
-
+ifdef ice_bin_dist
+    ICE_LIB_DIR = -L$(ice_dir)/$(libsubdir)
+    ICE_FLAGS	= -I$(ice_dir)/include
+endif
+ICE_LIBS = $(ICE_LIB_DIR) -lIce -lSlice -lIceUtil
 
 ifneq ($(embedded_runpath_prefix),)
-	runpath_libdir	:= $(embedded_runpath_prefix)/$(libsubdir)
+    runpath_libdir	:= $(embedded_runpath_prefix)/$(libsubdir)
 endif
 
 CPPFLAGS		=
@@ -192,37 +164,33 @@ SLICE2RBFLAGS		= $(ICECPPFLAGS)
 LDFLAGS			= $(LDPLATFORMFLAGS) $(CXXFLAGS) -L$(libdir)
 
 ifdef ice_src_dist
-	ifeq ($(ice_cpp_dir), $(ice_dir)/cpp)
-		ifeq ($(MinGW), yes)
-			SLICEPARSERLIB	= $(ice_cpp_dir)/bin/$(SLICE_LIBNAME).dll
-		else
-			SLICEPARSERLIB	= $(ice_cpp_dir)/lib/$(call mklibfilename,Slice,$(VERSION))
-		endif
-		SLICE2RB		= $(ice_cpp_dir)/bin/$(slice_translator)
-	else
-		ifeq ($(MinGW), yes)
-			SLICEPARSERLIB	= $(ice_cpp_dir)/$(binsubdir)/$(SLICE_LIBNAME).dll
-		else
-			SLICEPARSERLIB	= $(ice_cpp_dir)/$(libsubdir)/$(call mklibfilename,Slice,$(VERSION))
-		endif
-		SLICE2RB		= $(ice_cpp_dir)/$(binsubdir)/$(slice_translator)
+    ifeq ($(ice_cpp_dir), $(ice_dir)/cpp)
+	ifeq ($(SLICEPARSERLIB),)
+	    SLICEPARSERLIB	= $(ice_cpp_dir)/lib/$(call mklibfilename,Slice,$(VERSION))
 	endif
+	SLICE2RB	= $(ice_cpp_dir)/bin/$(slice_translator)
+    else
+	SLICEPARSERLIB	= $(ice_cpp_dir)/$(libsubdir)/$(call mklibfilename,Slice,$(VERSION))
+	SLICE2RB	= $(ice_cpp_dir)/$(binsubdir)/$(slice_translator)
+    endif
 else
-	ifeq ($(MinGW), yes)
-		SLICEPARSERLIB	= $(ice_dir)/$(binsubdir)/$(SLICE_LIBNAME).dll
-	else
-		SLICEPARSERLIB	= $(ice_dir)/$(libsubdir)/$(call mklibfilename,Slice,$(VERSION))
-	endif
-	SLICE2CPP		= $(ice_dir)/$(binsubdir)/$(slice_translator)
+    SLICEPARSERLIB	= $(ice_dir)/$(libsubdir)/$(call mklibfilename,Slice,$(VERSION))
+    SLICE2CPP		= $(ice_dir)/$(binsubdir)/$(slice_translator)
 endif
 
 #
 # A Ruby extension library cannot have a "lib" prefix, so Ruby-specific
 # functions are defined that strip "lib" from the regular library name.
 #
-mkrblibfilename		= $(subst lib,,$(call mklibfilename,$(1),$(2)))
-mkrbsoname		= $(subst lib,,$(call mksoname,$(1),$(2)))
-mkrblibname		= $(subst lib,,$(call mklibname,$(1)))
+ifeq ($(mkrblibfilename),)
+    mkrblibfilename	= $(subst lib,,$(call mklibfilename,$(1),$(2)))
+endif
+ifeq ($(mkrbsoname),)
+    mkrbsoname		= $(subst lib,,$(call mksoname,$(1),$(2)))
+endif
+ifeq ($(mkrblibname),)
+    mkrblibname		= $(subst lib,,$(call mklibname,$(1)))
+endif
 
 EVERYTHING		= all depend clean install
 
diff --git a/rb/config/Make.rules.Darwin b/rb/config/Make.rules.Darwin
index 611540d25b6..f4e89a32caf 100644
--- a/rb/config/Make.rules.Darwin
+++ b/rb/config/Make.rules.Darwin
@@ -62,7 +62,4 @@ ICE_OS_LIBS             = -ldl
 
 ICONV_LIB               = -liconv
 
-
 PLATFORM_HAS_READLINE   := no
-
-export DYLD_LIBRARY_PATH := $(libdir):$(DYLD_LIBRARY_PATH)
diff --git a/rb/config/Make.rules.MINGW b/rb/config/Make.rules.MINGW
new file mode 100644
index 00000000000..34b13386746
--- /dev/null
+++ b/rb/config/Make.rules.MINGW
@@ -0,0 +1,25 @@
+# **********************************************************************
+#
+# Copyright (c) 2003-2012 ZeroC, Inc. All rights reserved.
+#
+# This copy of Ice is licensed to you under the terms described in the
+# ICE_LICENSE file included in this distribution.
+#
+# **********************************************************************
+
+#
+# Include C++ Make.rules.MINGW
+#
+include	 $(top_srcdir)/../cpp/config/Make.rules.MINGW
+
+mkrblibfilename	= $(1).so
+mkrbsoname	= $(if $(2),lib$(1).xxx.$(2),lib$(1).xxx)
+mkrblibname     = $(1).xxx
+
+libdir		= $(top_srcdir)/ruby
+
+ifdef ice_src_dist
+    ifeq ($(ice_cpp_dir), $(ice_dir)/cpp)
+         SLICEPARSERLIB	= $(ice_cpp_dir)/bin/$(call mklibfilename,Slice,$(VERSION))
+    endif
+endif
\ No newline at end of file
diff --git a/rb/src/IceRuby/Makefile b/rb/src/IceRuby/Makefile
index b57de8b3252..99f879cfaa3 100644
--- a/rb/src/IceRuby/Makefile
+++ b/rb/src/IceRuby/Makefile
@@ -11,15 +11,10 @@ top_srcdir	= ../..
 
 include $(top_srcdir)/../cpp/config/Make.rules.common
 
-ifeq ($(MinGW), yes)
-	DLLNAME         = $(libdir)/IceRuby.so
-	TARGETS		= $(DLLNAME)
-else
-	LIBFILENAME     = $(call mkrblibfilename,IceRuby,$(VERSION))
-	SONAME          = $(call mkrbsoname,IceRuby,$(SOVERSION))  
-	LIBNAME		= $(call mkrblibname,IceRuby)
-	TARGETS		=  $(call mklibtargets,$(libdir)/$(LIBFILENAME),$(libdir)/$(SONAME),$(libdir)/$(LIBNAME))
-endif
+LIBFILENAME     = $(call mkrblibfilename,IceRuby,$(VERSION))
+SONAME          = $(call mkrbsoname,IceRuby,$(SOVERSION))  
+LIBNAME		= $(call mkrblibname,IceRuby)
+TARGETS		= $(call mklibtargets,$(libdir)/$(LIBFILENAME),$(libdir)/$(SONAME),$(libdir)/$(LIBNAME))
 
 OBJS		= Connection.o \
 		  Communicator.o \
@@ -42,16 +37,6 @@ include $(top_srcdir)/config/Make.rules
 CPPFLAGS	:= -I. -I.. $(CPPFLAGS) $(ICE_FLAGS) $(RUBY_FLAGS)
 LINKWITH        := -L"$(libdir)" $(ICE_LIBS) $(RUBY_LIBS) $(CXXLIBS)
 
-ifeq ($(MinGW), yes)
-
-$(DLLNAME): $(OBJS)
-	$(CXX) -shared $(LDFLAGS) -o $(DLLNAME) $(OBJS) $(LINKWITH)
-
-install:: all
-	$(call installprogram,$(DLLNAME),$(install_libdir))
-
-else
-
 $(libdir)/$(LIBFILENAME): $(OBJS)
 	rm -f $@
 	$(call mkshlib,$@,$(SONAME),$(OBJS),$(LINKWITH))
@@ -67,6 +52,4 @@ $(libdir)/$(LIBNAME): $(libdir)/$(SONAME)
 install:: all
 	$(call installlib,$(install_libdir),$(libdir),$(LIBFILENAME),$(SONAME),$(LIBNAME))
 
-endif
-
 #include .depend
diff --git a/scripts/TestUtil.py b/scripts/TestUtil.py
index aa83cc84d36..2592c3ae55d 100755
--- a/scripts/TestUtil.py
+++ b/scripts/TestUtil.py
@@ -96,7 +96,9 @@ def getCppCompiler():
 def isMINGW():
     if not isWin32():
         return False
-    return getCppCompiler() == "MINGW"
+    # Ruby Installer DEVKIT sets the RI_DEVKIT environment variable,
+    # we check for this variable to detect the Ruby MINGW environment.
+    return os.environ.has_key("RI_DEVKIT")
 
 def isVC90():
     if not isWin32():