1 files changed, 94 insertions, 0 deletions
diff --git a/libgfortran/intrinsics/chdir.c b/libgfortran/intrinsics/chdir.c
new file mode 100644
index 0000000000..57b45ce302
--- /dev/null
+++ b/libgfortran/intrinsics/chdir.c
@@ -0,0 +1,94 @@
+/* Implementation of the CHDIR intrinsic.
+   Copyright (C) 2005-2017 Free Software Foundation, Inc.
+   Contributed by François-Xavier Coudert <coudert@clipper.ens.fr>
+
+This file is part of the GNU Fortran 95 runtime library (libgfortran).
+
+Libgfortran is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public
+License as published by the Free Software Foundation; either
+version 3 of the License, or (at your option) any later version.
+
+Libgfortran is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#include "libgfortran.h"
+
+#include <errno.h>
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+/* SUBROUTINE CHDIR(DIR, STATUS)
+   CHARACTER(len=*), INTENT(IN) :: DIR
+   INTEGER, INTENT(OUT), OPTIONAL :: STATUS  */
+
+#ifdef HAVE_CHDIR
+extern void chdir_i4_sub (char *, GFC_INTEGER_4 *, gfc_charlen_type);
+iexport_proto(chdir_i4_sub);
+
+void
+chdir_i4_sub (char *dir, GFC_INTEGER_4 *status, gfc_charlen_type dir_len)
+{
+  int val;
+  char *str = fc_strdup (dir, dir_len);
+
+  val = chdir (str);
+  free (str);
+
+  if (status != NULL)
+    *status = (val == 0) ? 0 : errno;
+}
+iexport(chdir_i4_sub);
+
+extern void chdir_i8_sub (char *, GFC_INTEGER_8 *, gfc_charlen_type);
+iexport_proto(chdir_i8_sub);
+
+void
+chdir_i8_sub (char *dir, GFC_INTEGER_8 *status, gfc_charlen_type dir_len)
+{
+  int val;
+  char *str = fc_strdup (dir, dir_len);
+
+  val = chdir (str);
+  free (str);
+
+  if (status != NULL)
+    *status = (val == 0) ? 0 : errno;
+}
+iexport(chdir_i8_sub);
+
+extern GFC_INTEGER_4 chdir_i4 (char *, gfc_charlen_type);
+export_proto(chdir_i4);
+
+GFC_INTEGER_4
+chdir_i4 (char *dir, gfc_charlen_type dir_len)
+{
+  GFC_INTEGER_4 val;
+  chdir_i4_sub (dir, &val, dir_len);
+  return val;
+}
+
+extern GFC_INTEGER_8 chdir_i8 (char *, gfc_charlen_type);
+export_proto(chdir_i8);
+
+GFC_INTEGER_8
+chdir_i8 (char *dir, gfc_charlen_type dir_len)
+{
+  GFC_INTEGER_8 val;
+  chdir_i8_sub (dir, &val, dir_len);
+  return val;
+}
+#endif