# Configure a GNU-like replacement for <string.h>.

# Copyright (C) 2007-2020 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.

# serial 23

# Written by Paul Eggert.

AC_DEFUN([gl_HEADER_STRING_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_STRING_H_BODY])

])

AC_DEFUN([gl_HEADER_STRING_H_BODY],

[

  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])

  gl_NEXT_HEADERS([string.h])

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

  dnl corresponding gnulib module is not in use, and which is not

  dnl guaranteed by C89.

  gl_WARN_ON_USE_PREPARE([[#include <string.h>

    ]],

    [ffsl ffsll memmem mempcpy memrchr rawmemchr stpcpy stpncpy strchrnul

     strdup strncat strndup strnlen strpbrk strsep strcasestr strtok_r

     strerror_r strsignal strverscmp])

  AC_REQUIRE([AC_C_RESTRICT])

])

AC_DEFUN([gl_STRING_MODULE_INDICATOR],

[

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

  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])

  gl_MODULE_INDICATOR_SET_VARIABLE([$1])

  dnl Define it also as a C macro, for the benefit of the unit tests.

  gl_MODULE_INDICATOR_FOR_TESTS([$1])

])

AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],

[

  GNULIB_EXPLICIT_BZERO=0; AC_SUBST([GNULIB_EXPLICIT_BZERO])

  GNULIB_FFSL=0;        AC_SUBST([GNULIB_FFSL])

  GNULIB_FFSLL=0;       AC_SUBST([GNULIB_FFSLL])

  GNULIB_MEMCHR=0;      AC_SUBST([GNULIB_MEMCHR])

  GNULIB_MEMMEM=0;      AC_SUBST([GNULIB_MEMMEM])

  GNULIB_MEMPCPY=0;     AC_SUBST([GNULIB_MEMPCPY])

  GNULIB_MEMRCHR=0;     AC_SUBST([GNULIB_MEMRCHR])

  GNULIB_RAWMEMCHR=0;   AC_SUBST([GNULIB_RAWMEMCHR])

  GNULIB_STPCPY=0;      AC_SUBST([GNULIB_STPCPY])

  GNULIB_STPNCPY=0;     AC_SUBST([GNULIB_STPNCPY])

  GNULIB_STRCHRNUL=0;   AC_SUBST([GNULIB_STRCHRNUL])

  GNULIB_STRDUP=0;      AC_SUBST([GNULIB_STRDUP])

  GNULIB_STRNCAT=0;     AC_SUBST([GNULIB_STRNCAT])

  GNULIB_STRNDUP=0;     AC_SUBST([GNULIB_STRNDUP])

  GNULIB_STRNLEN=0;     AC_SUBST([GNULIB_STRNLEN])

  GNULIB_STRPBRK=0;     AC_SUBST([GNULIB_STRPBRK])

  GNULIB_STRSEP=0;      AC_SUBST([GNULIB_STRSEP])

  GNULIB_STRSTR=0;      AC_SUBST([GNULIB_STRSTR])

  GNULIB_STRCASESTR=0;  AC_SUBST([GNULIB_STRCASESTR])

  GNULIB_STRTOK_R=0;    AC_SUBST([GNULIB_STRTOK_R])

  GNULIB_MBSLEN=0;      AC_SUBST([GNULIB_MBSLEN])

  GNULIB_MBSNLEN=0;     AC_SUBST([GNULIB_MBSNLEN])

  GNULIB_MBSCHR=0;      AC_SUBST([GNULIB_MBSCHR])

  GNULIB_MBSRCHR=0;     AC_SUBST([GNULIB_MBSRCHR])

  GNULIB_MBSSTR=0;      AC_SUBST([GNULIB_MBSSTR])

  GNULIB_MBSCASECMP=0;  AC_SUBST([GNULIB_MBSCASECMP])

  GNULIB_MBSNCASECMP=0; AC_SUBST([GNULIB_MBSNCASECMP])

  GNULIB_MBSPCASECMP=0; AC_SUBST([GNULIB_MBSPCASECMP])

  GNULIB_MBSCASESTR=0;  AC_SUBST([GNULIB_MBSCASESTR])

  GNULIB_MBSCSPN=0;     AC_SUBST([GNULIB_MBSCSPN])

  GNULIB_MBSPBRK=0;     AC_SUBST([GNULIB_MBSPBRK])

  GNULIB_MBSSPN=0;      AC_SUBST([GNULIB_MBSSPN])

  GNULIB_MBSSEP=0;      AC_SUBST([GNULIB_MBSSEP])

  GNULIB_MBSTOK_R=0;    AC_SUBST([GNULIB_MBSTOK_R])

  GNULIB_STRERROR=0;    AC_SUBST([GNULIB_STRERROR])

  GNULIB_STRERROR_R=0;  AC_SUBST([GNULIB_STRERROR_R])

  GNULIB_STRSIGNAL=0;   AC_SUBST([GNULIB_STRSIGNAL])

  GNULIB_STRVERSCMP=0;  AC_SUBST([GNULIB_STRVERSCMP])

  HAVE_MBSLEN=0;        AC_SUBST([HAVE_MBSLEN])

  dnl Assume proper GNU behavior unless another module says otherwise.

  HAVE_EXPLICIT_BZERO=1;        AC_SUBST([HAVE_EXPLICIT_BZERO])

  HAVE_FFSL=1;                  AC_SUBST([HAVE_FFSL])

  HAVE_FFSLL=1;                 AC_SUBST([HAVE_FFSLL])

  HAVE_MEMCHR=1;                AC_SUBST([HAVE_MEMCHR])

  HAVE_DECL_MEMMEM=1;           AC_SUBST([HAVE_DECL_MEMMEM])

  HAVE_MEMPCPY=1;               AC_SUBST([HAVE_MEMPCPY])

  HAVE_DECL_MEMRCHR=1;          AC_SUBST([HAVE_DECL_MEMRCHR])

  HAVE_RAWMEMCHR=1;             AC_SUBST([HAVE_RAWMEMCHR])

  HAVE_STPCPY=1;                AC_SUBST([HAVE_STPCPY])

  HAVE_STPNCPY=1;               AC_SUBST([HAVE_STPNCPY])

  HAVE_STRCHRNUL=1;             AC_SUBST([HAVE_STRCHRNUL])

  HAVE_DECL_STRDUP=1;           AC_SUBST([HAVE_DECL_STRDUP])

  HAVE_DECL_STRNDUP=1;          AC_SUBST([HAVE_DECL_STRNDUP])

  HAVE_DECL_STRNLEN=1;          AC_SUBST([HAVE_DECL_STRNLEN])

  HAVE_STRPBRK=1;               AC_SUBST([HAVE_STRPBRK])

  HAVE_STRSEP=1;                AC_SUBST([HAVE_STRSEP])

  HAVE_STRCASESTR=1;            AC_SUBST([HAVE_STRCASESTR])

  HAVE_DECL_STRTOK_R=1;         AC_SUBST([HAVE_DECL_STRTOK_R])

  HAVE_DECL_STRERROR_R=1;       AC_SUBST([HAVE_DECL_STRERROR_R])

  HAVE_DECL_STRSIGNAL=1;        AC_SUBST([HAVE_DECL_STRSIGNAL])

  HAVE_STRVERSCMP=1;            AC_SUBST([HAVE_STRVERSCMP])

  REPLACE_MEMCHR=0;             AC_SUBST([REPLACE_MEMCHR])

  REPLACE_MEMMEM=0;             AC_SUBST([REPLACE_MEMMEM])

  REPLACE_STPNCPY=0;            AC_SUBST([REPLACE_STPNCPY])

  REPLACE_STRCHRNUL=0;          AC_SUBST([REPLACE_STRCHRNUL])

  REPLACE_STRDUP=0;             AC_SUBST([REPLACE_STRDUP])

  REPLACE_STRNCAT=0;            AC_SUBST([REPLACE_STRNCAT])

  REPLACE_STRNDUP=0;            AC_SUBST([REPLACE_STRNDUP])

  REPLACE_STRNLEN=0;            AC_SUBST([REPLACE_STRNLEN])

  REPLACE_STRSTR=0;             AC_SUBST([REPLACE_STRSTR])

  REPLACE_STRCASESTR=0;         AC_SUBST([REPLACE_STRCASESTR])

  REPLACE_STRTOK_R=0;           AC_SUBST([REPLACE_STRTOK_R])

  REPLACE_STRERROR=0;           AC_SUBST([REPLACE_STRERROR])

  REPLACE_STRERROR_R=0;         AC_SUBST([REPLACE_STRERROR_R])

  REPLACE_STRSIGNAL=0;          AC_SUBST([REPLACE_STRSIGNAL])

  UNDEFINE_STRTOK_R=0;          AC_SUBST([UNDEFINE_STRTOK_R])

])