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-rw-r--r--m4/strstr.m420
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diff --git a/m4/strstr.m4 b/m4/strstr.m4
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+# strstr.m4 serial 1
+dnl Copyright (C) 2002 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.
+
+AC_DEFUN([gl_FUNC_STRSTR],
+[
+ AC_REPLACE_FUNCS(strstr)
+ if test $ac_cv_func_strstr = no; then
+ gl_PREREQ_STRSTR
+ fi
+])
+
+# Prerequisites of lib/strstr.c.
+AC_DEFUN([gl_PREREQ_STRSTR], [
+ AC_CHECK_HEADERS_ONCE(string.h)
+])