ptsname_r: new module

[gnulib.git] / m4 / ptsname_r.m4

diff --git a/m4/ptsname_r.m4 b/m4/ptsname_r.m4
new file mode 100644 (file)
index 0000000..fb07099
--- /dev/null
+++ b/m4/ptsname_r.m4
@@ -0,0 +1,23 @@
+# ptsname_r.m4 serial 1
+dnl Copyright (C) 2010-2011 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_PTSNAME_R],
+[
+  AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+
+  dnl Persuade glibc <stdlib.h> to declare ptsname_r().
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+  AC_CHECK_FUNCS_ONCE([ptsname_r])
+  if test $ac_cv_func_ptsname_r = no; then
+    HAVE_PTSNAME_R=0
+  fi
+])
+
+# Prerequisites of lib/ptsname.c.
+AC_DEFUN([gl_PREREQ_PTSNAME_R], [
+  :
+])