+#else /* !LISP_FEATURE_WIN32 */
+
+# include <windows.h>
+# include <process.h>
+# include <stdio.h>
+# include <stdlib.h>
+# include <fcntl.h>
+# include <io.h>
+
+#define READ_HANDLE 0
+#define WRITE_HANDLE 1
+
+/* These functions do not attempt to deal with wchar_t variations. */
+
+/* Get the value of _environ maintained by MSVCRT */
+char **msvcrt_environ ( void ) {
+ return ( _environ );
+}
+
+/* Set up in, out, err pipes and spawn a program, waiting or otherwise. */
+HANDLE spawn (
+ const char *program,
+ const char *const *argv,
+ int in,
+ int out,
+ int err,
+ int wait
+ )
+{
+ int fdOut, fdIn, fdErr, fdInPipe[2], fdOutPipe[2], fdErrPipe[2], wait_mode;
+ HANDLE hProcess;
+
+ /* Make pipes to be passed to the spawned process as in/out/err */
+ if ( _pipe ( fdOutPipe, 512, O_TEXT | O_NOINHERIT ) == -1 ) return (HANDLE)-1;
+ if ( _pipe ( fdInPipe, 512, O_TEXT | O_NOINHERIT ) == -1 ) return (HANDLE)-1;
+ if ( _pipe ( fdErrPipe, 512, O_TEXT | O_NOINHERIT ) == -1 ) return (HANDLE)-1;
+
+ /* Duplicate and save original in/out/err handles */
+ fdOut = _dup ( out );
+ fdIn = _dup ( in );
+ fdErr = _dup ( err );
+
+ /* Duplicate write end of new pipes to current out/err handles,
+ * read to in */
+ if ( _dup2 ( fdOutPipe[WRITE_HANDLE], out ) != 0 ) return (HANDLE)-1;
+ if ( _dup2 ( fdInPipe[READ_HANDLE], in ) != 0 ) return (HANDLE)-1;
+ if ( _dup2 ( fdErrPipe[WRITE_HANDLE], err ) != 0 ) return (HANDLE)-1;
+
+
+ /* Close the duplicated handles to the new pipes */
+ close ( fdOutPipe[WRITE_HANDLE] );
+ close ( fdInPipe[READ_HANDLE] );
+ close ( fdErrPipe[WRITE_HANDLE] );
+
+ /* Set the wait mode. */
+ if ( 0 == wait ) {
+ wait_mode = P_NOWAIT;
+ } else {
+ wait_mode = P_WAIT;
+ }
+
+ /* Spawn process given on the command line*/
+ hProcess = (HANDLE) spawnvp ( wait_mode, program, argv );
+
+ /* Now that the process is launched, replace the original
+ * in/out/err handles */
+ if ( _dup2 ( fdOut, out ) != 0 ) return (HANDLE)-1;
+ if ( _dup2 ( fdIn, in ) != 0 ) return (HANDLE)-1;
+ if ( _dup2 ( fdErr, err ) != 0 ) return (HANDLE)-1;
+
+ /* Close duplicates */
+ close(fdOut);
+ close(fdIn);
+ close(fdErr);
+
+ return ( hProcess );
+}
+
+
+#endif /* !LISP_FEATURE_WIN32 */