-#define set_error(msg...) do { if (error != NULL) *error = g_error_new (G_LOG_DOMAIN, 1, msg); } while (0)
-#define set_error_cond(cond,msg...) do { if ((cond) && error != NULL) *error = g_error_new (G_LOG_DOMAIN, 1, msg); } while (0)
-#define set_error_status(status,msg...) do { if (error != NULL) *error = g_error_new (G_LOG_DOMAIN, status, msg); } while (0)
+#ifdef HAVE_UNISTD_H
+#ifndef __USE_GNU
+#define __USE_GNU
+#endif
+#include <unistd.h>
+#endif
+
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+
+#ifdef HAVE_SYS_WAIT_H
+#include <sys/wait.h>
+#endif
+
+#ifdef G_OS_WIN32
+#include <io.h>
+#include <winsock2.h>
+#define open _open
+#define close _close
+#define read _read
+#define write _write
+/* windows pipe api details: http://msdn2.microsoft.com/en-us/library/edze9h7e(VS.80).aspx */
+#define pipe(x) _pipe(x, 256, 0)
+#endif
+
+#define set_error(msg, ...) do { if (error != NULL) *error = g_error_new (G_LOG_DOMAIN, 1, msg, __VA_ARGS__); } while (0)
+#define set_error_cond(cond,msg, ...) do { if ((cond) && error != NULL) *error = g_error_new (G_LOG_DOMAIN, 1, msg, __VA_ARGS__); } while (0)
+#define set_error_status(status,msg, ...) do { if (error != NULL) *error = g_error_new (G_LOG_DOMAIN, status, msg, __VA_ARGS__); } while (0)