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# Configure a GNU-like replacement for <string.h>.
# Copyright (C) 2007-2023 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 35
# Written by Paul Eggert.
AC_DEFUN_ONCE([gl_STRING_H],
[
dnl Ensure to expand the default settings once only, before all statements
dnl that occur in other macros.
AC_REQUIRE([gl_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>
]],
[explicit_bzero ffsl ffsll memmem mempcpy memrchr memset_explicit
rawmemchr stpcpy stpncpy strchrnul
strdup strncat strndup strnlen strpbrk strsep strcasestr strtok_r
strerror_r strerrorname_np sigabbrev_np sigdescr_np strsignal strverscmp])
AC_REQUIRE([AC_C_RESTRICT])
])
# gl_STRING_MODULE_INDICATOR([modulename])
# sets the shell variable that indicates the presence of the given module
# to a C preprocessor expression that will evaluate to 1.
# This macro invocation must not occur in macros that are AC_REQUIREd.
AC_DEFUN([gl_STRING_MODULE_INDICATOR],
[
dnl Ensure to expand the default settings once only.
gl_STRING_H_REQUIRE_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])
])
# Initializes the default values for AC_SUBSTed shell variables.
# This macro must not be AC_REQUIREd. It must only be invoked, and only
# outside of macros or in macros that are not AC_REQUIREd.
AC_DEFUN([gl_STRING_H_REQUIRE_DEFAULTS],
[
m4_defun(GL_MODULE_INDICATOR_PREFIX[_STRING_H_MODULE_INDICATOR_DEFAULTS], [
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXPLICIT_BZERO])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FFSL])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FFSLL])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MEMCHR])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MEMMEM])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MEMPCPY])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MEMRCHR])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MEMSET_EXPLICIT])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RAWMEMCHR])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STPCPY])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STPNCPY])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRCHRNUL])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRDUP])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRNCAT])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRNDUP])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRNLEN])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRPBRK])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRSEP])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRSTR])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRCASESTR])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOK_R])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSLEN])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSNLEN])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSCHR])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSRCHR])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSSTR])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSCASECMP])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSNCASECMP])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSPCASECMP])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSCASESTR])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSCSPN])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSPBRK])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSSPN])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSSEP])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSTOK_R])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRERROR])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRERROR_R])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRERRORNAME_NP])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SIGABBREV_NP])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SIGDESCR_NP])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRSIGNAL])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRVERSCMP])
dnl Support Microsoft deprecated alias function names by default.
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_MEMCCPY], [1])
gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_STRDUP], [1])
])
m4_require(GL_MODULE_INDICATOR_PREFIX[_STRING_H_MODULE_INDICATOR_DEFAULTS])
dnl Make sure the shell variable for GNULIB_FREE_POSIX is initialized.
gl_STDLIB_H_REQUIRE_DEFAULTS
AC_REQUIRE([gl_STRING_H_DEFAULTS])
])
AC_DEFUN([gl_STRING_H_DEFAULTS],
[
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_DECL_MEMMEM=1; AC_SUBST([HAVE_DECL_MEMMEM])
HAVE_MEMPCPY=1; AC_SUBST([HAVE_MEMPCPY])
HAVE_MEMSET_EXPLICIT=1; AC_SUBST([HAVE_MEMSET_EXPLICIT])
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_STRERRORNAME_NP=1; AC_SUBST([HAVE_STRERRORNAME_NP])
HAVE_SIGABBREV_NP=1; AC_SUBST([HAVE_SIGABBREV_NP])
HAVE_SIGDESCR_NP=1; AC_SUBST([HAVE_SIGDESCR_NP])
HAVE_DECL_STRSIGNAL=1; AC_SUBST([HAVE_DECL_STRSIGNAL])
HAVE_STRVERSCMP=1; AC_SUBST([HAVE_STRVERSCMP])
REPLACE_FFSLL=0; AC_SUBST([REPLACE_FFSLL])
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_STRERRORNAME_NP=0; AC_SUBST([REPLACE_STRERRORNAME_NP])
REPLACE_STRSIGNAL=0; AC_SUBST([REPLACE_STRSIGNAL])
UNDEFINE_STRTOK_R=0; AC_SUBST([UNDEFINE_STRTOK_R])
])
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