maint: update copyright

[gnulib.git] / m4 / getpass.m4

diff --git a/m4/getpass.m4 b/m4/getpass.m4
index 4449bc5..cf545a6 100644 (file)
--- a/m4/getpass.m4
+++ b/m4/getpass.m4
@@ -1,17 +1,22 @@
-# getpass.m4 serial 3
-dnl Copyright (C) 2002-2003 Free Software Foundation, Inc.
-dnl This file is free software, distributed under the terms of the GNU
-dnl General Public License.  As a special exception to the GNU General
-dnl Public License, this file may be distributed as part of a program
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
+# getpass.m4 serial 14
+dnl Copyright (C) 2002-2003, 2005-2006, 2009-2014 Free Software Foundation,
+dnl 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.
 
 # Provide a getpass() function if the system doesn't have it.
 AC_DEFUN([gl_FUNC_GETPASS],
 [
-  AC_REPLACE_FUNCS(getpass)
-  if test $ac_cv_func_getpass = no; then
-    gl_PREREQ_GETPASS
+  dnl Persuade Solaris <unistd.h> and <stdlib.h> to declare getpass().
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  AC_CHECK_FUNCS([getpass])
+  AC_CHECK_DECLS_ONCE([getpass])
+  if test $ac_cv_func_getpass = yes; then
+    HAVE_GETPASS=1
+  else
+    HAVE_GETPASS=0
   fi
 ])
 
@@ -19,18 +24,35 @@ AC_DEFUN([gl_FUNC_GETPASS],
 # arbitrary length (not just 8 bytes as on HP-UX).
 AC_DEFUN([gl_FUNC_GETPASS_GNU],
 [
+  dnl Persuade Solaris <unistd.h> and <stdlib.h> to declare getpass().
+  AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+  AC_CHECK_DECLS_ONCE([getpass])
   dnl TODO: Detect when GNU getpass() is already found in glibc.
-  AC_LIBOBJ(getpass)
-  gl_PREREQ_GETPASS
-  dnl We must choose a different name for our function, since on ELF systems
-  dnl an unusable getpass() in libc.so would override our getpass() if it is
-  dnl compiled into a shared library.
-  AC_DEFINE([getpass], [gnu_getpass],
-    [Define to a replacement function name for getpass().])
+  REPLACE_GETPASS=1
+
+  if test $REPLACE_GETPASS = 1; then
+    dnl We must choose a different name for our function, since on ELF systems
+    dnl an unusable getpass() in libc.so would override our getpass() if it is
+    dnl compiled into a shared library.
+    AC_DEFINE([getpass], [gnu_getpass],
+      [Define to a replacement function name for getpass().])
+  fi
 ])
 
 # Prerequisites of lib/getpass.c.
 AC_DEFUN([gl_PREREQ_GETPASS], [
-  AC_CHECK_HEADERS_ONCE(stdio_ext.h)
+  AC_CHECK_HEADERS_ONCE([stdio_ext.h termios.h])
+  AC_CHECK_FUNCS_ONCE([__fsetlocking tcgetattr tcsetattr])
+  AC_CHECK_DECLS([__fsetlocking],,,
+    [[#include <stdio.h>
+      #if HAVE_STDIO_EXT_H
+       #include <stdio_ext.h>
+      #endif]])
+  AC_CHECK_DECLS_ONCE([fflush_unlocked])
+  AC_CHECK_DECLS_ONCE([flockfile])
+  AC_CHECK_DECLS_ONCE([fputs_unlocked])
+  AC_CHECK_DECLS_ONCE([funlockfile])
+  AC_CHECK_DECLS_ONCE([putc_unlocked])
   :
 ])