# Configure a replacement for <strings.h>.

# serial 6

# Copyright (C) 2007, 2009-2020 Free Software Foundation, Inc.

# This file is free software; the Free Software Foundation

# gives unlimited permission to copy and/or distribute it,

# with or without modifications, as long as this notice is preserved.

AC_DEFUN([gl_HEADER_STRINGS_H],

[

  dnl Use AC_REQUIRE here, so that the default behavior below is expanded

  dnl once only, before all statements that occur in other macros.

  AC_REQUIRE([gl_HEADER_STRINGS_H_BODY])

])

AC_DEFUN([gl_HEADER_STRINGS_H_BODY],

[

  AC_REQUIRE([gl_HEADER_STRINGS_H_DEFAULTS])

  gl_CHECK_NEXT_HEADERS([strings.h])

  if test $ac_cv_header_strings_h = yes; then

    HAVE_STRINGS_H=1

  else

    HAVE_STRINGS_H=0

  fi

  AC_SUBST([HAVE_STRINGS_H])

  dnl Check for declarations of anything we want to poison if the

  dnl corresponding gnulib module is not in use.

  gl_WARN_ON_USE_PREPARE([[

    /* Minix 3.1.8 has a bug: <sys/types.h> must be included before

       <strings.h>.  */

    #include <sys/types.h>

    #include <strings.h>

    ]], [ffs strcasecmp strncasecmp])

])

AC_DEFUN([gl_STRINGS_MODULE_INDICATOR],

[

  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.

  AC_REQUIRE([gl_HEADER_STRINGS_H_DEFAULTS])

  gl_MODULE_INDICATOR_SET_VARIABLE([$1])

])

AC_DEFUN([gl_HEADER_STRINGS_H_DEFAULTS],

[

  GNULIB_FFS=0;            AC_SUBST([GNULIB_FFS])

  dnl Assume proper GNU behavior unless another module says otherwise.

  HAVE_FFS=1;              AC_SUBST([HAVE_FFS])

  HAVE_STRCASECMP=1;       AC_SUBST([HAVE_STRCASECMP])

  HAVE_DECL_STRNCASECMP=1; AC_SUBST([HAVE_DECL_STRNCASECMP])

])