diff --git a/configure.ac b/configure.ac
index 756b189..383faca 100644
--- a/configure.ac
+++ b/configure.ac
@@ -77,6 +77,9 @@ AC_CONFIG_HEADER(config.h)
 AC_CHECK_LIB([gcrypt], [gcry_control])
 AM_CONDITIONAL([HAVE_LIBGCRYPT], [test $ac_cv_lib_gcrypt_gcry_control = yes])
 
+# For MinGW.
+AC_CHECK_LIB([ws2_32], [gethostbyname])
+
 AC_CACHE_CHECK([for sin_len in sock],libiscsi_cv_HAVE_SOCK_SIN_LEN,[
 AC_TRY_COMPILE([#include <sys/types.h>
 #include <sys/socket.h>
diff --git a/lib/init.c b/lib/init.c
index ea8b84a..031299a 100644
--- a/lib/init.c
+++ b/lib/init.c
@@ -293,7 +293,8 @@ iscsi_create_context(const char *initiator_name)
 	while (iscsi->smalloc_size < required) {
 		iscsi->smalloc_size <<= 1;
 	}
-	ISCSI_LOG(iscsi,5,"small allocation size is %zu byte", iscsi->smalloc_size);
+	ISCSI_LOG(iscsi, 5, "small allocation size is %u byte",
+                  (uint32_t)iscsi->smalloc_size);
 
 	ca = getenv("LIBISCSI_CACHE_ALLOCATIONS");
 	if (!ca || atoi(ca) != 0) {
diff --git a/lib/socket.c b/lib/socket.c
index 5d3952b..05a3e7d 100644
--- a/lib/socket.c
+++ b/lib/socket.c
@@ -630,7 +630,8 @@ iscsi_read_from_socket(struct iscsi_context *iscsi)
 			 * no need to limit the read to what is available in the socket
 			 */
 			count = hdr_size - in->hdr_pos;
-			count = recv(iscsi->fd, &in->hdr[in->hdr_pos], count, 0);
+			count = recv(iscsi->fd, (void *)&in->hdr[in->hdr_pos],
+                                     count, 0);
 			if (count == 0) {
 				/* remote side has closed the socket. */
 				return -1;
@@ -681,7 +682,7 @@ iscsi_read_from_socket(struct iscsi_context *iscsi)
 					}
 					buf = &in->data[in->data_pos];
 				}
-				count = recv(iscsi->fd, buf, count, 0);
+				count = recv(iscsi->fd, (void *)buf, count, 0);
 			}
 			if (count == 0) {
 				/* remote side has closed the socket. */
@@ -805,7 +806,8 @@ iscsi_write_to_socket(struct iscsi_context *iscsi)
 		/* Write header and any immediate data */
 		if (pdu->outdata_written < pdu->outdata.size) {
 			count = send(iscsi->fd,
-				     pdu->outdata.data + pdu->outdata_written,
+				     (void *)(pdu->outdata.data +
+                                              pdu->outdata_written),
 				     pdu->outdata.size - pdu->outdata_written,
 				     socket_flags);
 			if (count == -1) {
diff --git a/win32/win32_compat.c b/win32/win32_compat.c
index 45bd80d..40bc4ce 100644
--- a/win32/win32_compat.c
+++ b/win32/win32_compat.c
@@ -21,11 +21,6 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
 */
 
-#ifndef _WIN32
-
-static int dummy ATTRIBUTE((unused));
-
-#else
 #include "win32_compat.h"
 #include <errno.h>
 #include <stdio.h>
@@ -209,5 +204,3 @@ int win32_dup2(int oldfd, int newfd)
 {
 	return 0;
 }
-
-#endif
diff --git a/win32/win32_compat.h b/win32/win32_compat.h
index 5f9a841..6176636 100644
--- a/win32/win32_compat.h
+++ b/win32/win32_compat.h
@@ -30,7 +30,7 @@ THE SOFTWARE.
 
 #include <winsock2.h>
 #include <ws2tcpip.h>
-#include <Ws2ipdef.h>
+#include <ws2ipdef.h>
 #include <basetsd.h>
 #include <io.h>
 #include <malloc.h>
@@ -58,10 +58,12 @@ struct pollfd {
 };
 #endif
 
+#ifdef _MSC_VER
 typedef int ssize_t;
 typedef int uid_t;
 typedef int gid_t;
 typedef int socklen_t;
+#endif
 
 /* Wrapper macros to call misc. functions win32 is missing */
 #define close                closesocket
@@ -74,12 +76,21 @@ typedef int socklen_t;
 #define poll(x, y, z)        win32_poll(x, y, z)
 #define inet_pton(x,y,z)     win32_inet_pton(x,y,z)
 #define sleep(x)             Sleep(x * 1000)
+#ifdef _MSC_VER
 #define getpid               GetCurrentProcessId
+#endif
 
 #if defined(_MSC_VER) && _MSC_VER < 1900
 #define snprintf(a, b, c, ...) _snprintf_s(a, b, b, c, ## __VA_ARGS__)
 #endif
 
+struct timezone;
+
+struct iovec {
+    void *iov_base;
+    size_t iov_len;
+};
+
 int     win32_inet_pton(int af, const char * src, void * dst);
 int     win32_poll(struct pollfd *fds, unsigned int nfsd, int timeout);
 int     win32_gettimeofday(struct timeval *tv, struct timezone *tz);
@@ -87,11 +98,6 @@ ssize_t win32_writev(int fd, const struct iovec *iov, int iovcnt);
 ssize_t win32_readv(int fd, const struct iovec *iov, int iovcnt);
 int     win32_dup2(int oldfd, int newfd);
 
-struct iovec {
-    void *iov_base;
-    size_t iov_len;
-};
-
 #define inline
 
 #endif // _WIN32