1# Configure a GNU-like replacement for <string.h>.
2
3# Copyright (C) 2007-2010 Free Software Foundation, Inc.
4# This file is free software; the Free Software Foundation
5# gives unlimited permission to copy and/or distribute it,
6# with or without modifications, as long as this notice is preserved.
7
8# serial 17
9
10# Written by Paul Eggert.
11
12AC_DEFUN([gl_HEADER_STRING_H],
13[
14  dnl Use AC_REQUIRE here, so that the default behavior below is expanded
15  dnl once only, before all statements that occur in other macros.
16  AC_REQUIRE([gl_HEADER_STRING_H_BODY])
17])
18
19AC_DEFUN([gl_HEADER_STRING_H_BODY],
20[
21  AC_REQUIRE([AC_C_RESTRICT])
22  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
23  gl_CHECK_NEXT_HEADERS([string.h])
24
25  dnl Check for declarations of anything we want to poison if the
26  dnl corresponding gnulib module is not in use, and which is not
27  dnl guaranteed by C89.
28  gl_WARN_ON_USE_PREPARE([[#include <string.h>
29    ]],
30    [memmem mempcpy memrchr rawmemchr stpcpy stpncpy strchrnul strdup
31     strncat strndup strnlen strpbrk strsep strcasestr strtok_r strsignal
32     strverscmp])
33])
34
35AC_DEFUN([gl_STRING_MODULE_INDICATOR],
36[
37  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
38  AC_REQUIRE([gl_HEADER_STRING_H_DEFAULTS])
39  gl_MODULE_INDICATOR_SET_VARIABLE([$1])
40  dnl Define it also as a C macro, for the benefit of the unit tests.
41  gl_MODULE_INDICATOR_FOR_TESTS([$1])
42])
43
44AC_DEFUN([gl_HEADER_STRING_H_DEFAULTS],
45[
46  GNULIB_MEMCHR=0;      AC_SUBST([GNULIB_MEMCHR])
47  GNULIB_MEMMEM=0;      AC_SUBST([GNULIB_MEMMEM])
48  GNULIB_MEMPCPY=0;     AC_SUBST([GNULIB_MEMPCPY])
49  GNULIB_MEMRCHR=0;     AC_SUBST([GNULIB_MEMRCHR])
50  GNULIB_RAWMEMCHR=0;   AC_SUBST([GNULIB_RAWMEMCHR])
51  GNULIB_STPCPY=0;      AC_SUBST([GNULIB_STPCPY])
52  GNULIB_STPNCPY=0;     AC_SUBST([GNULIB_STPNCPY])
53  GNULIB_STRCHRNUL=0;   AC_SUBST([GNULIB_STRCHRNUL])
54  GNULIB_STRDUP=0;      AC_SUBST([GNULIB_STRDUP])
55  GNULIB_STRNCAT=0;     AC_SUBST([GNULIB_STRNCAT])
56  GNULIB_STRNDUP=0;     AC_SUBST([GNULIB_STRNDUP])
57  GNULIB_STRNLEN=0;     AC_SUBST([GNULIB_STRNLEN])
58  GNULIB_STRPBRK=0;     AC_SUBST([GNULIB_STRPBRK])
59  GNULIB_STRSEP=0;      AC_SUBST([GNULIB_STRSEP])
60  GNULIB_STRSTR=0;      AC_SUBST([GNULIB_STRSTR])
61  GNULIB_STRCASESTR=0;  AC_SUBST([GNULIB_STRCASESTR])
62  GNULIB_STRTOK_R=0;    AC_SUBST([GNULIB_STRTOK_R])
63  GNULIB_MBSLEN=0;      AC_SUBST([GNULIB_MBSLEN])
64  GNULIB_MBSNLEN=0;     AC_SUBST([GNULIB_MBSNLEN])
65  GNULIB_MBSCHR=0;      AC_SUBST([GNULIB_MBSCHR])
66  GNULIB_MBSRCHR=0;     AC_SUBST([GNULIB_MBSRCHR])
67  GNULIB_MBSSTR=0;      AC_SUBST([GNULIB_MBSSTR])
68  GNULIB_MBSCASECMP=0;  AC_SUBST([GNULIB_MBSCASECMP])
69  GNULIB_MBSNCASECMP=0; AC_SUBST([GNULIB_MBSNCASECMP])
70  GNULIB_MBSPCASECMP=0; AC_SUBST([GNULIB_MBSPCASECMP])
71  GNULIB_MBSCASESTR=0;  AC_SUBST([GNULIB_MBSCASESTR])
72  GNULIB_MBSCSPN=0;     AC_SUBST([GNULIB_MBSCSPN])
73  GNULIB_MBSPBRK=0;     AC_SUBST([GNULIB_MBSPBRK])
74  GNULIB_MBSSPN=0;      AC_SUBST([GNULIB_MBSSPN])
75  GNULIB_MBSSEP=0;      AC_SUBST([GNULIB_MBSSEP])
76  GNULIB_MBSTOK_R=0;    AC_SUBST([GNULIB_MBSTOK_R])
77  GNULIB_STRERROR=0;    AC_SUBST([GNULIB_STRERROR])
78  GNULIB_STRSIGNAL=0;   AC_SUBST([GNULIB_STRSIGNAL])
79  GNULIB_STRVERSCMP=0;  AC_SUBST([GNULIB_STRVERSCMP])
80  HAVE_MBSLEN=0;        AC_SUBST([HAVE_MBSLEN])
81  dnl Assume proper GNU behavior unless another module says otherwise.
82  HAVE_MEMCHR=1;                AC_SUBST([HAVE_MEMCHR])
83  HAVE_DECL_MEMMEM=1;           AC_SUBST([HAVE_DECL_MEMMEM])
84  HAVE_MEMPCPY=1;               AC_SUBST([HAVE_MEMPCPY])
85  HAVE_DECL_MEMRCHR=1;          AC_SUBST([HAVE_DECL_MEMRCHR])
86  HAVE_RAWMEMCHR=1;             AC_SUBST([HAVE_RAWMEMCHR])
87  HAVE_STPCPY=1;                AC_SUBST([HAVE_STPCPY])
88  HAVE_STPNCPY=1;               AC_SUBST([HAVE_STPNCPY])
89  HAVE_STRCHRNUL=1;             AC_SUBST([HAVE_STRCHRNUL])
90  HAVE_DECL_STRDUP=1;           AC_SUBST([HAVE_DECL_STRDUP])
91  HAVE_DECL_STRNDUP=1;          AC_SUBST([HAVE_DECL_STRNDUP])
92  HAVE_DECL_STRNLEN=1;          AC_SUBST([HAVE_DECL_STRNLEN])
93  HAVE_STRPBRK=1;               AC_SUBST([HAVE_STRPBRK])
94  HAVE_STRSEP=1;                AC_SUBST([HAVE_STRSEP])
95  HAVE_STRCASESTR=1;            AC_SUBST([HAVE_STRCASESTR])
96  HAVE_DECL_STRTOK_R=1;         AC_SUBST([HAVE_DECL_STRTOK_R])
97  HAVE_DECL_STRSIGNAL=1;        AC_SUBST([HAVE_DECL_STRSIGNAL])
98  HAVE_STRVERSCMP=1;            AC_SUBST([HAVE_STRVERSCMP])
99  REPLACE_MEMCHR=0;             AC_SUBST([REPLACE_MEMCHR])
100  REPLACE_MEMMEM=0;             AC_SUBST([REPLACE_MEMMEM])
101  REPLACE_STPNCPY=0;            AC_SUBST([REPLACE_STPNCPY])
102  REPLACE_STRDUP=0;             AC_SUBST([REPLACE_STRDUP])
103  REPLACE_STRSTR=0;             AC_SUBST([REPLACE_STRSTR])
104  REPLACE_STRCASESTR=0;         AC_SUBST([REPLACE_STRCASESTR])
105  REPLACE_STRERROR=0;           AC_SUBST([REPLACE_STRERROR])
106  REPLACE_STRNCAT=0;            AC_SUBST([REPLACE_STRNCAT])
107  REPLACE_STRNDUP=0;            AC_SUBST([REPLACE_STRNDUP])
108  REPLACE_STRNLEN=0;            AC_SUBST([REPLACE_STRNLEN])
109  REPLACE_STRSIGNAL=0;          AC_SUBST([REPLACE_STRSIGNAL])
110  REPLACE_STRTOK_R=0;           AC_SUBST([REPLACE_STRTOK_R])
111  UNDEFINE_STRTOK_R=0;          AC_SUBST([UNDEFINE_STRTOK_R])
112])
113