1 # Configure a replacement for <strings.h>.
4 # Copyright (C) 2007, 2009-2011 Free Software Foundation, Inc.
5 # This file is free software; the Free Software Foundation
6 # gives unlimited permission to copy and/or distribute it,
7 # with or without modifications, as long as this notice is preserved.
9 AC_DEFUN([gl_HEADER_STRINGS_H],
11 dnl Use AC_REQUIRE here, so that the default behavior below is expanded
12 dnl once only, before all statements that occur in other macros.
13 AC_REQUIRE([gl_HEADER_STRINGS_H_BODY])
16 AC_DEFUN([gl_HEADER_STRINGS_H_BODY],
18 AC_REQUIRE([gl_HEADER_STRINGS_H_DEFAULTS])
19 gl_CHECK_NEXT_HEADERS([strings.h])
21 dnl Check for declarations of anything we want to poison if the
22 dnl corresponding gnulib module is not in use.
23 gl_WARN_ON_USE_PREPARE([[
24 /* Minix 3.1.8 has a bug: <sys/types.h> must be included before
26 #include <sys/types.h>
28 ]], [ffs strcasecmp strncasecmp])
31 AC_DEFUN([gl_STRINGS_MODULE_INDICATOR],
33 dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
34 AC_REQUIRE([gl_HEADER_STRINGS_H_DEFAULTS])
35 gl_MODULE_INDICATOR_SET_VARIABLE([$1])
38 AC_DEFUN([gl_HEADER_STRINGS_H_DEFAULTS],
40 GNULIB_FFS=0; AC_SUBST([GNULIB_FFS])
41 dnl Assume proper GNU behavior unless another module says otherwise.
42 HAVE_FFS=1; AC_SUBST([HAVE_FFS])
43 HAVE_STRCASECMP=1; AC_SUBST([HAVE_STRCASECMP])
44 HAVE_DECL_STRNCASECMP=1; AC_SUBST([HAVE_DECL_STRNCASECMP])