Fix error with w64-mingw32 cross compiler. Add --enable-example option.

configure.ac

@@ -45,6 +45,11 @@ AC_ARG_ENABLE([maintainer-mode],
                     [Turn on compile time warnings])],
     [maintainer_mode=$withval], [maintainer_mode=no])
 
+AC_ARG_ENABLE([examples],
+    [AS_HELP_STRING([--enable-examples],
+                    [Build example programs])],
+    [request_examples=$withval], [request_examples=yes])
+
 dnl Checks for programs
 AC_PROG_CC
 AC_PROG_CXX
@@ -124,7 +129,12 @@ fi
 AM_CONDITIONAL([HAVE_LIBXML2], [ test "x${have_libxml2}" = "xyes" ])
 
 # The example programs depend on OpenSSL
-enable_examples=$have_openssl
+enable_examples=no
+if test "x${request_examples}" = "xyes" &&
+   test "x${have_openssl}" = "xyes"; then
+    enable_examples=yes
+fi
+
 AM_CONDITIONAL([ENABLE_EXAMPLES], [ test "x${enable_examples}" = "xyes" ])
 
 # Checks for header files.
@@ -140,6 +150,9 @@ AC_CHECK_HEADERS([ \
   unistd.h \
 ])
 
+# For ntohl, ntohs in Windows
+AC_CHECK_HEADERS([winsock2.h])
+
 # Checks for typedefs, structures, and compiler characteristics.
 AC_TYPE_SIZE_T
 AC_TYPE_SSIZE_T
@@ -188,6 +201,13 @@ if test "x$kevent_udata_intptr_t" = "xyes"; then
 fi
 AC_LANG_POP()
 
+dnl Windows library for winsock2
+case "${host}" in
+  *mingw*)
+    LIBS="$LIBS -lws2_32"
+    ;;
+esac
+
 if test "x$maintainer_mode" != "xno"; then
     CFLAGS="$CFLAGS -Wall -Wextra -Werror"
     CFLAGS="$CFLAGS -Wmissing-prototypes -Wstrict-prototypes"

lib/spdylay_gzip.c

@@ -80,5 +80,7 @@ int spdylay_gzip_inflate(spdylay_gzip *inflater,
     return SPDYLAY_ERR_GZIP;
   default:
     assert(0);
+    /* We need this for some compilers */
+    return 0;
   }
 }

lib/spdylay_net.h

@@ -37,4 +37,8 @@
 #  include <netinet/in.h>
 #endif /* HAVE_NETINET_IN_H */
 
+#ifdef HAVE_WINSOCK2_H
+#  include <winsock2.h>
+#endif /* HAVE_WINSOCK2_H */
+
 #endif /* SPDYLAY_NET_H */

lib/spdylay_session.c

@@ -2784,16 +2784,16 @@ ssize_t spdylay_session_pack_data(spdylay_session *session,
                                   spdylay_data *frame)
 {
   ssize_t framelen = datamax+8, r;
-  int eof;
+  int eof_flags;
   uint8_t flags;
   r = spdylay_reserve_buffer(buf_ptr, buflen_ptr, framelen);
   if(r != 0) {
     return r;
   }
-  eof = 0;
+  eof_flags = 0;
   r = frame->data_prd.read_callback
     (session, frame->stream_id, (*buf_ptr)+8, datamax,
-     &eof, &frame->data_prd.source, session->user_data);
+     &eof_flags, &frame->data_prd.source, session->user_data);
   if(r == SPDYLAY_ERR_DEFERRED || r == SPDYLAY_ERR_TEMPORAL_CALLBACK_FAILURE) {
     return r;
   } else if(r < 0 || datamax < (size_t)r) {
@@ -2804,7 +2804,7 @@ ssize_t spdylay_session_pack_data(spdylay_session *session,
   spdylay_put_uint32be(&(*buf_ptr)[0], frame->stream_id);
   spdylay_put_uint32be(&(*buf_ptr)[4], r);
   flags = 0;
-  if(eof) {
+  if(eof_flags) {
     frame->eof = 1;
     if(frame->flags & SPDYLAY_DATA_FLAG_FIN) {
       flags |= SPDYLAY_DATA_FLAG_FIN;