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emacs/m4/string_h.m4
Paul Eggert b6be1ce644 Update from Gnulib
This incorporates:
2020-02-22 fchmodat, lchmod: simplify
2020-02-22 lchmod: fix link error on Solaris 10
2020-02-22 use 'restrict' in all POSIX function declarations
2020-02-22 chmodat, chownat: new modules
* lib/gnulib.mk.in: Regenerate.
* lib/inttypes.in.h, lib/openat.h, lib/signal.in.h:
* lib/stdio.in.h, lib/stdlib.in.h, lib/string.in.h:
* lib/sys_stat.in.h, lib/time.in.h, lib/unistd.in.h, m4/inttypes.m4:
* m4/signal_h.m4, m4/stdio_h.m4, m4/stdlib_h.m4, m4/string_h.m4:
* m4/sys_socket_h.m4, m4/sys_stat_h.m4, m4/time_h.m4:
* m4/unistd_h.m4: Copy from Gnulib.
2020-02-23 01:27:19 -08:00

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# 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])
])