diff options
Diffstat (limited to 'build-aux')
-rwxr-xr-x | build-aux/config.rpath | 22 | ||||
-rw-r--r-- | build-aux/ltmain.sh | 6 | ||||
-rw-r--r-- | build-aux/snippet/_Noreturn.h | 10 | ||||
-rw-r--r-- | build-aux/snippet/arg-nonnull.h | 26 | ||||
-rw-r--r-- | build-aux/snippet/c++defs.h | 271 | ||||
-rw-r--r-- | build-aux/snippet/warn-on-use.h | 109 |
6 files changed, 11 insertions, 433 deletions
diff --git a/build-aux/config.rpath b/build-aux/config.rpath index c38b914d..1e2595ff 100755 --- a/build-aux/config.rpath +++ b/build-aux/config.rpath | |||
@@ -2,7 +2,7 @@ | |||
2 | # Output a system dependent set of variables, describing how to set the | 2 | # Output a system dependent set of variables, describing how to set the |
3 | # run time search path of shared libraries in an executable. | 3 | # run time search path of shared libraries in an executable. |
4 | # | 4 | # |
5 | # Copyright 1996-2013 Free Software Foundation, Inc. | 5 | # Copyright 1996-2023 Free Software Foundation, Inc. |
6 | # Taken from GNU libtool, 2001 | 6 | # Taken from GNU libtool, 2001 |
7 | # Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996 | 7 | # Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996 |
8 | # | 8 | # |
@@ -367,15 +367,11 @@ else | |||
367 | dgux*) | 367 | dgux*) |
368 | hardcode_libdir_flag_spec='-L$libdir' | 368 | hardcode_libdir_flag_spec='-L$libdir' |
369 | ;; | 369 | ;; |
370 | freebsd2.2*) | 370 | freebsd2.[01]*) |
371 | hardcode_libdir_flag_spec='-R$libdir' | ||
372 | hardcode_direct=yes | ||
373 | ;; | ||
374 | freebsd2*) | ||
375 | hardcode_direct=yes | 371 | hardcode_direct=yes |
376 | hardcode_minus_L=yes | 372 | hardcode_minus_L=yes |
377 | ;; | 373 | ;; |
378 | freebsd* | dragonfly*) | 374 | freebsd* | dragonfly* | midnightbsd*) |
379 | hardcode_libdir_flag_spec='-R$libdir' | 375 | hardcode_libdir_flag_spec='-R$libdir' |
380 | hardcode_direct=yes | 376 | hardcode_direct=yes |
381 | ;; | 377 | ;; |
@@ -548,13 +544,11 @@ case "$host_os" in | |||
548 | dgux*) | 544 | dgux*) |
549 | library_names_spec='$libname$shrext' | 545 | library_names_spec='$libname$shrext' |
550 | ;; | 546 | ;; |
551 | freebsd* | dragonfly*) | 547 | freebsd[23].*) |
552 | case "$host_os" in | 548 | library_names_spec='$libname$shrext$versuffix' |
553 | freebsd[123]*) | 549 | ;; |
554 | library_names_spec='$libname$shrext$versuffix' ;; | 550 | freebsd* | dragonfly* | midnightbsd*) |
555 | *) | 551 | library_names_spec='$libname$shrext' |
556 | library_names_spec='$libname$shrext' ;; | ||
557 | esac | ||
558 | ;; | 552 | ;; |
559 | gnu*) | 553 | gnu*) |
560 | library_names_spec='$libname$shrext' | 554 | library_names_spec='$libname$shrext' |
diff --git a/build-aux/ltmain.sh b/build-aux/ltmain.sh index 33f642a0..2e8548d3 100644 --- a/build-aux/ltmain.sh +++ b/build-aux/ltmain.sh | |||
@@ -189,7 +189,7 @@ func_basename () | |||
189 | # to NONDIR_REPLACEMENT. | 189 | # to NONDIR_REPLACEMENT. |
190 | # value returned in "$func_dirname_result" | 190 | # value returned in "$func_dirname_result" |
191 | # basename: Compute filename of FILE. | 191 | # basename: Compute filename of FILE. |
192 | # value retuned in "$func_basename_result" | 192 | # value returned in "$func_basename_result" |
193 | # Implementation must be kept synchronized with func_dirname | 193 | # Implementation must be kept synchronized with func_dirname |
194 | # and func_basename. For efficiency, we do not delegate to | 194 | # and func_basename. For efficiency, we do not delegate to |
195 | # those functions but instead duplicate the functionality here. | 195 | # those functions but instead duplicate the functionality here. |
@@ -522,7 +522,7 @@ func_mkdir_p () | |||
522 | # While some portion of DIR does not yet exist... | 522 | # While some portion of DIR does not yet exist... |
523 | while test ! -d "$my_directory_path"; do | 523 | while test ! -d "$my_directory_path"; do |
524 | # ...make a list in topmost first order. Use a colon delimited | 524 | # ...make a list in topmost first order. Use a colon delimited |
525 | # list incase some portion of path contains whitespace. | 525 | # list in case some portion of path contains whitespace. |
526 | my_dir_list="$my_directory_path:$my_dir_list" | 526 | my_dir_list="$my_directory_path:$my_dir_list" |
527 | 527 | ||
528 | # If the last portion added has no slash in it, the list is done | 528 | # If the last portion added has no slash in it, the list is done |
@@ -4394,7 +4394,7 @@ EOF | |||
4394 | { | 4394 | { |
4395 | /* however, if there is an option in the LTWRAPPER_OPTION_PREFIX | 4395 | /* however, if there is an option in the LTWRAPPER_OPTION_PREFIX |
4396 | namespace, but it is not one of the ones we know about and | 4396 | namespace, but it is not one of the ones we know about and |
4397 | have already dealt with, above (inluding dump-script), then | 4397 | have already dealt with, above (including dump-script), then |
4398 | report an error. Otherwise, targets might begin to believe | 4398 | report an error. Otherwise, targets might begin to believe |
4399 | they are allowed to use options in the LTWRAPPER_OPTION_PREFIX | 4399 | they are allowed to use options in the LTWRAPPER_OPTION_PREFIX |
4400 | namespace. The first time any user complains about this, we'll | 4400 | namespace. The first time any user complains about this, we'll |
diff --git a/build-aux/snippet/_Noreturn.h b/build-aux/snippet/_Noreturn.h deleted file mode 100644 index c44ad89b..00000000 --- a/build-aux/snippet/_Noreturn.h +++ /dev/null | |||
@@ -1,10 +0,0 @@ | |||
1 | #if !defined _Noreturn && __STDC_VERSION__ < 201112 | ||
2 | # if (3 <= __GNUC__ || (__GNUC__ == 2 && 8 <= __GNUC_MINOR__) \ | ||
3 | || 0x5110 <= __SUNPRO_C) | ||
4 | # define _Noreturn __attribute__ ((__noreturn__)) | ||
5 | # elif 1200 <= _MSC_VER | ||
6 | # define _Noreturn __declspec (noreturn) | ||
7 | # else | ||
8 | # define _Noreturn | ||
9 | # endif | ||
10 | #endif | ||
diff --git a/build-aux/snippet/arg-nonnull.h b/build-aux/snippet/arg-nonnull.h deleted file mode 100644 index 8ea2a474..00000000 --- a/build-aux/snippet/arg-nonnull.h +++ /dev/null | |||
@@ -1,26 +0,0 @@ | |||
1 | /* A C macro for declaring that specific arguments must not be NULL. | ||
2 | Copyright (C) 2009-2013 Free Software Foundation, Inc. | ||
3 | |||
4 | This program is free software: you can redistribute it and/or modify it | ||
5 | under the terms of the GNU General Public License as published | ||
6 | by the Free Software Foundation; either version 3 of the License, or | ||
7 | (at your option) any later version. | ||
8 | |||
9 | This program is distributed in the hope that it will be useful, | ||
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
12 | General Public License for more details. | ||
13 | |||
14 | You should have received a copy of the GNU General Public License | ||
15 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | ||
16 | |||
17 | /* _GL_ARG_NONNULL((n,...,m)) tells the compiler and static analyzer tools | ||
18 | that the values passed as arguments n, ..., m must be non-NULL pointers. | ||
19 | n = 1 stands for the first argument, n = 2 for the second argument etc. */ | ||
20 | #ifndef _GL_ARG_NONNULL | ||
21 | # if (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || __GNUC__ > 3 | ||
22 | # define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params)) | ||
23 | # else | ||
24 | # define _GL_ARG_NONNULL(params) | ||
25 | # endif | ||
26 | #endif | ||
diff --git a/build-aux/snippet/c++defs.h b/build-aux/snippet/c++defs.h deleted file mode 100644 index b35b933c..00000000 --- a/build-aux/snippet/c++defs.h +++ /dev/null | |||
@@ -1,271 +0,0 @@ | |||
1 | /* C++ compatible function declaration macros. | ||
2 | Copyright (C) 2010-2013 Free Software Foundation, Inc. | ||
3 | |||
4 | This program is free software: you can redistribute it and/or modify it | ||
5 | under the terms of the GNU General Public License as published | ||
6 | by the Free Software Foundation; either version 3 of the License, or | ||
7 | (at your option) any later version. | ||
8 | |||
9 | This program is distributed in the hope that it will be useful, | ||
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
12 | General Public License for more details. | ||
13 | |||
14 | You should have received a copy of the GNU General Public License | ||
15 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | ||
16 | |||
17 | #ifndef _GL_CXXDEFS_H | ||
18 | #define _GL_CXXDEFS_H | ||
19 | |||
20 | /* The three most frequent use cases of these macros are: | ||
21 | |||
22 | * For providing a substitute for a function that is missing on some | ||
23 | platforms, but is declared and works fine on the platforms on which | ||
24 | it exists: | ||
25 | |||
26 | #if @GNULIB_FOO@ | ||
27 | # if !@HAVE_FOO@ | ||
28 | _GL_FUNCDECL_SYS (foo, ...); | ||
29 | # endif | ||
30 | _GL_CXXALIAS_SYS (foo, ...); | ||
31 | _GL_CXXALIASWARN (foo); | ||
32 | #elif defined GNULIB_POSIXCHECK | ||
33 | ... | ||
34 | #endif | ||
35 | |||
36 | * For providing a replacement for a function that exists on all platforms, | ||
37 | but is broken/insufficient and needs to be replaced on some platforms: | ||
38 | |||
39 | #if @GNULIB_FOO@ | ||
40 | # if @REPLACE_FOO@ | ||
41 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | ||
42 | # undef foo | ||
43 | # define foo rpl_foo | ||
44 | # endif | ||
45 | _GL_FUNCDECL_RPL (foo, ...); | ||
46 | _GL_CXXALIAS_RPL (foo, ...); | ||
47 | # else | ||
48 | _GL_CXXALIAS_SYS (foo, ...); | ||
49 | # endif | ||
50 | _GL_CXXALIASWARN (foo); | ||
51 | #elif defined GNULIB_POSIXCHECK | ||
52 | ... | ||
53 | #endif | ||
54 | |||
55 | * For providing a replacement for a function that exists on some platforms | ||
56 | but is broken/insufficient and needs to be replaced on some of them and | ||
57 | is additionally either missing or undeclared on some other platforms: | ||
58 | |||
59 | #if @GNULIB_FOO@ | ||
60 | # if @REPLACE_FOO@ | ||
61 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE) | ||
62 | # undef foo | ||
63 | # define foo rpl_foo | ||
64 | # endif | ||
65 | _GL_FUNCDECL_RPL (foo, ...); | ||
66 | _GL_CXXALIAS_RPL (foo, ...); | ||
67 | # else | ||
68 | # if !@HAVE_FOO@ or if !@HAVE_DECL_FOO@ | ||
69 | _GL_FUNCDECL_SYS (foo, ...); | ||
70 | # endif | ||
71 | _GL_CXXALIAS_SYS (foo, ...); | ||
72 | # endif | ||
73 | _GL_CXXALIASWARN (foo); | ||
74 | #elif defined GNULIB_POSIXCHECK | ||
75 | ... | ||
76 | #endif | ||
77 | */ | ||
78 | |||
79 | /* _GL_EXTERN_C declaration; | ||
80 | performs the declaration with C linkage. */ | ||
81 | #if defined __cplusplus | ||
82 | # define _GL_EXTERN_C extern "C" | ||
83 | #else | ||
84 | # define _GL_EXTERN_C extern | ||
85 | #endif | ||
86 | |||
87 | /* _GL_FUNCDECL_RPL (func, rettype, parameters_and_attributes); | ||
88 | declares a replacement function, named rpl_func, with the given prototype, | ||
89 | consisting of return type, parameters, and attributes. | ||
90 | Example: | ||
91 | _GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...) | ||
92 | _GL_ARG_NONNULL ((1))); | ||
93 | */ | ||
94 | #define _GL_FUNCDECL_RPL(func,rettype,parameters_and_attributes) \ | ||
95 | _GL_FUNCDECL_RPL_1 (rpl_##func, rettype, parameters_and_attributes) | ||
96 | #define _GL_FUNCDECL_RPL_1(rpl_func,rettype,parameters_and_attributes) \ | ||
97 | _GL_EXTERN_C rettype rpl_func parameters_and_attributes | ||
98 | |||
99 | /* _GL_FUNCDECL_SYS (func, rettype, parameters_and_attributes); | ||
100 | declares the system function, named func, with the given prototype, | ||
101 | consisting of return type, parameters, and attributes. | ||
102 | Example: | ||
103 | _GL_FUNCDECL_SYS (open, int, (const char *filename, int flags, ...) | ||
104 | _GL_ARG_NONNULL ((1))); | ||
105 | */ | ||
106 | #define _GL_FUNCDECL_SYS(func,rettype,parameters_and_attributes) \ | ||
107 | _GL_EXTERN_C rettype func parameters_and_attributes | ||
108 | |||
109 | /* _GL_CXXALIAS_RPL (func, rettype, parameters); | ||
110 | declares a C++ alias called GNULIB_NAMESPACE::func | ||
111 | that redirects to rpl_func, if GNULIB_NAMESPACE is defined. | ||
112 | Example: | ||
113 | _GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...)); | ||
114 | */ | ||
115 | #define _GL_CXXALIAS_RPL(func,rettype,parameters) \ | ||
116 | _GL_CXXALIAS_RPL_1 (func, rpl_##func, rettype, parameters) | ||
117 | #if defined __cplusplus && defined GNULIB_NAMESPACE | ||
118 | # define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \ | ||
119 | namespace GNULIB_NAMESPACE \ | ||
120 | { \ | ||
121 | rettype (*const func) parameters = ::rpl_func; \ | ||
122 | } \ | ||
123 | _GL_EXTERN_C int _gl_cxxalias_dummy | ||
124 | #else | ||
125 | # define _GL_CXXALIAS_RPL_1(func,rpl_func,rettype,parameters) \ | ||
126 | _GL_EXTERN_C int _gl_cxxalias_dummy | ||
127 | #endif | ||
128 | |||
129 | /* _GL_CXXALIAS_RPL_CAST_1 (func, rpl_func, rettype, parameters); | ||
130 | is like _GL_CXXALIAS_RPL_1 (func, rpl_func, rettype, parameters); | ||
131 | except that the C function rpl_func may have a slightly different | ||
132 | declaration. A cast is used to silence the "invalid conversion" error | ||
133 | that would otherwise occur. */ | ||
134 | #if defined __cplusplus && defined GNULIB_NAMESPACE | ||
135 | # define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \ | ||
136 | namespace GNULIB_NAMESPACE \ | ||
137 | { \ | ||
138 | rettype (*const func) parameters = \ | ||
139 | reinterpret_cast<rettype(*)parameters>(::rpl_func); \ | ||
140 | } \ | ||
141 | _GL_EXTERN_C int _gl_cxxalias_dummy | ||
142 | #else | ||
143 | # define _GL_CXXALIAS_RPL_CAST_1(func,rpl_func,rettype,parameters) \ | ||
144 | _GL_EXTERN_C int _gl_cxxalias_dummy | ||
145 | #endif | ||
146 | |||
147 | /* _GL_CXXALIAS_SYS (func, rettype, parameters); | ||
148 | declares a C++ alias called GNULIB_NAMESPACE::func | ||
149 | that redirects to the system provided function func, if GNULIB_NAMESPACE | ||
150 | is defined. | ||
151 | Example: | ||
152 | _GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...)); | ||
153 | */ | ||
154 | #if defined __cplusplus && defined GNULIB_NAMESPACE | ||
155 | /* If we were to write | ||
156 | rettype (*const func) parameters = ::func; | ||
157 | like above in _GL_CXXALIAS_RPL_1, the compiler could optimize calls | ||
158 | better (remove an indirection through a 'static' pointer variable), | ||
159 | but then the _GL_CXXALIASWARN macro below would cause a warning not only | ||
160 | for uses of ::func but also for uses of GNULIB_NAMESPACE::func. */ | ||
161 | # define _GL_CXXALIAS_SYS(func,rettype,parameters) \ | ||
162 | namespace GNULIB_NAMESPACE \ | ||
163 | { \ | ||
164 | static rettype (*func) parameters = ::func; \ | ||
165 | } \ | ||
166 | _GL_EXTERN_C int _gl_cxxalias_dummy | ||
167 | #else | ||
168 | # define _GL_CXXALIAS_SYS(func,rettype,parameters) \ | ||
169 | _GL_EXTERN_C int _gl_cxxalias_dummy | ||
170 | #endif | ||
171 | |||
172 | /* _GL_CXXALIAS_SYS_CAST (func, rettype, parameters); | ||
173 | is like _GL_CXXALIAS_SYS (func, rettype, parameters); | ||
174 | except that the C function func may have a slightly different declaration. | ||
175 | A cast is used to silence the "invalid conversion" error that would | ||
176 | otherwise occur. */ | ||
177 | #if defined __cplusplus && defined GNULIB_NAMESPACE | ||
178 | # define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \ | ||
179 | namespace GNULIB_NAMESPACE \ | ||
180 | { \ | ||
181 | static rettype (*func) parameters = \ | ||
182 | reinterpret_cast<rettype(*)parameters>(::func); \ | ||
183 | } \ | ||
184 | _GL_EXTERN_C int _gl_cxxalias_dummy | ||
185 | #else | ||
186 | # define _GL_CXXALIAS_SYS_CAST(func,rettype,parameters) \ | ||
187 | _GL_EXTERN_C int _gl_cxxalias_dummy | ||
188 | #endif | ||
189 | |||
190 | /* _GL_CXXALIAS_SYS_CAST2 (func, rettype, parameters, rettype2, parameters2); | ||
191 | is like _GL_CXXALIAS_SYS (func, rettype, parameters); | ||
192 | except that the C function is picked among a set of overloaded functions, | ||
193 | namely the one with rettype2 and parameters2. Two consecutive casts | ||
194 | are used to silence the "cannot find a match" and "invalid conversion" | ||
195 | errors that would otherwise occur. */ | ||
196 | #if defined __cplusplus && defined GNULIB_NAMESPACE | ||
197 | /* The outer cast must be a reinterpret_cast. | ||
198 | The inner cast: When the function is defined as a set of overloaded | ||
199 | functions, it works as a static_cast<>, choosing the designated variant. | ||
200 | When the function is defined as a single variant, it works as a | ||
201 | reinterpret_cast<>. The parenthesized cast syntax works both ways. */ | ||
202 | # define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \ | ||
203 | namespace GNULIB_NAMESPACE \ | ||
204 | { \ | ||
205 | static rettype (*func) parameters = \ | ||
206 | reinterpret_cast<rettype(*)parameters>( \ | ||
207 | (rettype2(*)parameters2)(::func)); \ | ||
208 | } \ | ||
209 | _GL_EXTERN_C int _gl_cxxalias_dummy | ||
210 | #else | ||
211 | # define _GL_CXXALIAS_SYS_CAST2(func,rettype,parameters,rettype2,parameters2) \ | ||
212 | _GL_EXTERN_C int _gl_cxxalias_dummy | ||
213 | #endif | ||
214 | |||
215 | /* _GL_CXXALIASWARN (func); | ||
216 | causes a warning to be emitted when ::func is used but not when | ||
217 | GNULIB_NAMESPACE::func is used. func must be defined without overloaded | ||
218 | variants. */ | ||
219 | #if defined __cplusplus && defined GNULIB_NAMESPACE | ||
220 | # define _GL_CXXALIASWARN(func) \ | ||
221 | _GL_CXXALIASWARN_1 (func, GNULIB_NAMESPACE) | ||
222 | # define _GL_CXXALIASWARN_1(func,namespace) \ | ||
223 | _GL_CXXALIASWARN_2 (func, namespace) | ||
224 | /* To work around GCC bug <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>, | ||
225 | we enable the warning only when not optimizing. */ | ||
226 | # if !__OPTIMIZE__ | ||
227 | # define _GL_CXXALIASWARN_2(func,namespace) \ | ||
228 | _GL_WARN_ON_USE (func, \ | ||
229 | "The symbol ::" #func " refers to the system function. " \ | ||
230 | "Use " #namespace "::" #func " instead.") | ||
231 | # elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING | ||
232 | # define _GL_CXXALIASWARN_2(func,namespace) \ | ||
233 | extern __typeof__ (func) func | ||
234 | # else | ||
235 | # define _GL_CXXALIASWARN_2(func,namespace) \ | ||
236 | _GL_EXTERN_C int _gl_cxxalias_dummy | ||
237 | # endif | ||
238 | #else | ||
239 | # define _GL_CXXALIASWARN(func) \ | ||
240 | _GL_EXTERN_C int _gl_cxxalias_dummy | ||
241 | #endif | ||
242 | |||
243 | /* _GL_CXXALIASWARN1 (func, rettype, parameters_and_attributes); | ||
244 | causes a warning to be emitted when the given overloaded variant of ::func | ||
245 | is used but not when GNULIB_NAMESPACE::func is used. */ | ||
246 | #if defined __cplusplus && defined GNULIB_NAMESPACE | ||
247 | # define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \ | ||
248 | _GL_CXXALIASWARN1_1 (func, rettype, parameters_and_attributes, \ | ||
249 | GNULIB_NAMESPACE) | ||
250 | # define _GL_CXXALIASWARN1_1(func,rettype,parameters_and_attributes,namespace) \ | ||
251 | _GL_CXXALIASWARN1_2 (func, rettype, parameters_and_attributes, namespace) | ||
252 | /* To work around GCC bug <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43881>, | ||
253 | we enable the warning only when not optimizing. */ | ||
254 | # if !__OPTIMIZE__ | ||
255 | # define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \ | ||
256 | _GL_WARN_ON_USE_CXX (func, rettype, parameters_and_attributes, \ | ||
257 | "The symbol ::" #func " refers to the system function. " \ | ||
258 | "Use " #namespace "::" #func " instead.") | ||
259 | # elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING | ||
260 | # define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \ | ||
261 | extern __typeof__ (func) func | ||
262 | # else | ||
263 | # define _GL_CXXALIASWARN1_2(func,rettype,parameters_and_attributes,namespace) \ | ||
264 | _GL_EXTERN_C int _gl_cxxalias_dummy | ||
265 | # endif | ||
266 | #else | ||
267 | # define _GL_CXXALIASWARN1(func,rettype,parameters_and_attributes) \ | ||
268 | _GL_EXTERN_C int _gl_cxxalias_dummy | ||
269 | #endif | ||
270 | |||
271 | #endif /* _GL_CXXDEFS_H */ | ||
diff --git a/build-aux/snippet/warn-on-use.h b/build-aux/snippet/warn-on-use.h deleted file mode 100644 index 1736a1bd..00000000 --- a/build-aux/snippet/warn-on-use.h +++ /dev/null | |||
@@ -1,109 +0,0 @@ | |||
1 | /* A C macro for emitting warnings if a function is used. | ||
2 | Copyright (C) 2010-2013 Free Software Foundation, Inc. | ||
3 | |||
4 | This program is free software: you can redistribute it and/or modify it | ||
5 | under the terms of the GNU General Public License as published | ||
6 | by the Free Software Foundation; either version 3 of the License, or | ||
7 | (at your option) any later version. | ||
8 | |||
9 | This program is distributed in the hope that it will be useful, | ||
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
12 | General Public License for more details. | ||
13 | |||
14 | You should have received a copy of the GNU General Public License | ||
15 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | ||
16 | |||
17 | /* _GL_WARN_ON_USE (function, "literal string") issues a declaration | ||
18 | for FUNCTION which will then trigger a compiler warning containing | ||
19 | the text of "literal string" anywhere that function is called, if | ||
20 | supported by the compiler. If the compiler does not support this | ||
21 | feature, the macro expands to an unused extern declaration. | ||
22 | |||
23 | This macro is useful for marking a function as a potential | ||
24 | portability trap, with the intent that "literal string" include | ||
25 | instructions on the replacement function that should be used | ||
26 | instead. However, one of the reasons that a function is a | ||
27 | portability trap is if it has the wrong signature. Declaring | ||
28 | FUNCTION with a different signature in C is a compilation error, so | ||
29 | this macro must use the same type as any existing declaration so | ||
30 | that programs that avoid the problematic FUNCTION do not fail to | ||
31 | compile merely because they included a header that poisoned the | ||
32 | function. But this implies that _GL_WARN_ON_USE is only safe to | ||
33 | use if FUNCTION is known to already have a declaration. Use of | ||
34 | this macro implies that there must not be any other macro hiding | ||
35 | the declaration of FUNCTION; but undefining FUNCTION first is part | ||
36 | of the poisoning process anyway (although for symbols that are | ||
37 | provided only via a macro, the result is a compilation error rather | ||
38 | than a warning containing "literal string"). Also note that in | ||
39 | C++, it is only safe to use if FUNCTION has no overloads. | ||
40 | |||
41 | For an example, it is possible to poison 'getline' by: | ||
42 | - adding a call to gl_WARN_ON_USE_PREPARE([[#include <stdio.h>]], | ||
43 | [getline]) in configure.ac, which potentially defines | ||
44 | HAVE_RAW_DECL_GETLINE | ||
45 | - adding this code to a header that wraps the system <stdio.h>: | ||
46 | #undef getline | ||
47 | #if HAVE_RAW_DECL_GETLINE | ||
48 | _GL_WARN_ON_USE (getline, "getline is required by POSIX 2008, but" | ||
49 | "not universally present; use the gnulib module getline"); | ||
50 | #endif | ||
51 | |||
52 | It is not possible to directly poison global variables. But it is | ||
53 | possible to write a wrapper accessor function, and poison that | ||
54 | (less common usage, like &environ, will cause a compilation error | ||
55 | rather than issue the nice warning, but the end result of informing | ||
56 | the developer about their portability problem is still achieved): | ||
57 | #if HAVE_RAW_DECL_ENVIRON | ||
58 | static char ***rpl_environ (void) { return &environ; } | ||
59 | _GL_WARN_ON_USE (rpl_environ, "environ is not always properly declared"); | ||
60 | # undef environ | ||
61 | # define environ (*rpl_environ ()) | ||
62 | #endif | ||
63 | */ | ||
64 | #ifndef _GL_WARN_ON_USE | ||
65 | |||
66 | # if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) | ||
67 | /* A compiler attribute is available in gcc versions 4.3.0 and later. */ | ||
68 | # define _GL_WARN_ON_USE(function, message) \ | ||
69 | extern __typeof__ (function) function __attribute__ ((__warning__ (message))) | ||
70 | # elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING | ||
71 | /* Verify the existence of the function. */ | ||
72 | # define _GL_WARN_ON_USE(function, message) \ | ||
73 | extern __typeof__ (function) function | ||
74 | # else /* Unsupported. */ | ||
75 | # define _GL_WARN_ON_USE(function, message) \ | ||
76 | _GL_WARN_EXTERN_C int _gl_warn_on_use | ||
77 | # endif | ||
78 | #endif | ||
79 | |||
80 | /* _GL_WARN_ON_USE_CXX (function, rettype, parameters_and_attributes, "string") | ||
81 | is like _GL_WARN_ON_USE (function, "string"), except that the function is | ||
82 | declared with the given prototype, consisting of return type, parameters, | ||
83 | and attributes. | ||
84 | This variant is useful for overloaded functions in C++. _GL_WARN_ON_USE does | ||
85 | not work in this case. */ | ||
86 | #ifndef _GL_WARN_ON_USE_CXX | ||
87 | # if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) | ||
88 | # define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ | ||
89 | extern rettype function parameters_and_attributes \ | ||
90 | __attribute__ ((__warning__ (msg))) | ||
91 | # elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING | ||
92 | /* Verify the existence of the function. */ | ||
93 | # define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ | ||
94 | extern rettype function parameters_and_attributes | ||
95 | # else /* Unsupported. */ | ||
96 | # define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ | ||
97 | _GL_WARN_EXTERN_C int _gl_warn_on_use | ||
98 | # endif | ||
99 | #endif | ||
100 | |||
101 | /* _GL_WARN_EXTERN_C declaration; | ||
102 | performs the declaration with C linkage. */ | ||
103 | #ifndef _GL_WARN_EXTERN_C | ||
104 | # if defined __cplusplus | ||
105 | # define _GL_WARN_EXTERN_C extern "C" | ||
106 | # else | ||
107 | # define _GL_WARN_EXTERN_C extern | ||
108 | # endif | ||
109 | #endif | ||