Fix COUCHDB-1197 - NIFs, .dll fixes for Windows

Many thanks, Dave Cottlehuber.

git-svn-id: https://svn.apache.org/repos/asf/couchdb/trunk@1147001 13f79535-47bb-0310-9956-ffa450edef68

THANKS

@@ -84,6 +84,7 @@ suggesting improvements or submitting changes. Some of these people are:
  * Caolan McMahon <caolan.mcmahon@googlemail.com>
  * Andrey Somov <trophybase@gmail.com>
  * Chris Coulson <chrisccoulson.googlemail.com>
+ * Dave Cottlehuber <dave@muse.net.nz>
 
 
 For a list of authors see the `AUTHORS` file.

configure.ac

@@ -28,6 +28,7 @@ AC_ENABLE_SHARED
 AC_DISABLE_STATIC
 
 AC_PROG_CC
+LT_INIT([win32-dll])
 AC_PROG_LIBTOOL
 AC_PROG_LN_S
 

src/ejson/Makefile.am

@@ -70,13 +70,16 @@ ejson_la_LDFLAGS = -module -avoid-version
 
 if WINDOWS
 ejson_la_LDFLAGS += -no-undefined
+EJSON_SO_NAME = ejson.dll
+else
+EJSON_SO_NAME = ejson.so
 endif
 
-priv/ejson.so: ejson.la
+priv/$(EJSON_SO_NAME): ejson.la
 	@mkdir -p ./priv
-	cp .libs/ejson.so $@
+	cp .libs/$(EJSON_SO_NAME) $@
 
-all: priv/ejson.so
+all: priv/$(EJSON_SO_NAME)
 endif
 
 %.app: %.app.in

src/ejson/yajl/yajl_gen.c

@@ -189,7 +189,7 @@ yajl_gen_integer(yajl_gen g, long int number)
     return yajl_gen_status_ok;
 }
 
-#ifdef WIN32
+#if defined(_WIN32) || defined(WIN32) || defined(__WIN32__)
 #include <float.h>
 #define isnan _isnan
 #define isinf !_finite

src/snappy/Makefile.am

@@ -54,13 +54,17 @@ snappy_nif_la_LDFLAGS = -module -avoid-version
 
 if WINDOWS
 snappy_nif_la_LDFLAGS += -no-undefined
+snappy_nif_la_CXXFLAGS += -EHsc
+SNAPPY_SO_NAME = snappy_nif.dll
+else
+SNAPPY_SO_NAME = snappy_nif.so
 endif
 
-priv/snappy_nif.so: snappy_nif.la
+priv/$(SNAPPY_SO_NAME): snappy_nif.la
 	@mkdir -p ./priv
-	cp .libs/snappy_nif.so $@
+	cp .libs/$(SNAPPY_SO_NAME) $@
 
-all: priv/snappy_nif.so
+all: priv/$(SNAPPY_SO_NAME)
 endif
 
 %.app: %.app.in